The Year of 2008 in Electrocardiology
Open accessAbstract
Ann Noninvasive Electrocardiol 2010;15(1):85–89
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- Premisecitation
In a small number of patients with Wolff-Parkinson-White syndrome, ECG imaging could localize ventricular insertion sites of accessory pathways to guide ablation and evaluate its outcome in pediatric patients.
“In a small (n = 14) number of patients with Wolff-Parkinson-White (W-P-W) Syndrome, ECG imaging, a novel modality for noninvasive electroanatomic mapping of epicardial activation and repolarization, 25 could localize ventricular insertion sites of accessory pathways to guide ablation and evaluate its outcome in pediatric patients with W-P-W.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [25] 25. Ghosh S, Rhee EK, Avari JN, et al. Cardiac memory in pa- tients with Wolff-Parkinson-White syndrome. Noninvasive imaging of activation and repolarization before and after catheter ablation. Circulation 2008;118:907-915. source
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- Premisecitation
Decreased heart rate variability, even after controlling for traditional risk factors, is associated with increased C-reactive protein and interleukin-6.
“A decreased heart rate variability even after controlling for traditional risk factors, was associated with increased C-reactive protein and interleukin-6, suggesting that autonomic dysregulation may lead to inflammation.28”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [28] 28. Lampert R, Bremner JD, Shaoyong S, et al. Decreased heart rate variability is associated with higher levels of inflam- mation in middle-aged men. Am Heart J 2008;156:759.e1- 759.e7. source
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- Premisecitation
Erythromycin, an IKr blocker, can be used to unmask occult congenital long QT syndrome.
“Jeyaraj and coworkers 37 used erythromycin, an I Kr blocker, to unmask occult congenital long QT syndrome and this together with the sensitive repolarization measure T peak-to-end interval in LQT2 patients.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [37] 37. Jeyaraj D, Abernethy DP, Natarajan RN, et al. I Kr channel blockade to unmask occult congenital long QT syndrome. Heart Rhythm 2008;5:2-7. source
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- Premisecitation
New ECG criteria based on R waves in V2 or T waves in V1 to V2 do not discriminate between inferior and lateral myocardial infarction.
“new criteria based on R waves in V 2 or T waves in V 1 to V 2 do not discriminate between inferior and lateral myocardial infarction.7”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [7] 7. Bayes de Luna A, Cino J, Goldwasser D, et al. New electro- cardiographic diagnostic criteria for the pathologic R waves in leads V1 and V2 of anatomically lateral myocardial in- farction. J Electrocardiol 2008;42:413-418. source
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- Premisecitation
Black athletes with left ventricular hypertrophy have a higher prevalence of ST-segment elevations and deep T-wave inversions.
“Black athletes with left ventricular hypertrophy had a higher prevalence of ST-segment elevations and deep T-wave inversions.11”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [11] 11. Basavarajaiah S, Boraita A, Whyte G, et al. Ethnic differ- ences in left ventricular remodeling in highly-trained ath- letes. J Am Coll Cardiol 2008;51:2256-2262. source
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- Premisecitation
In patients with short QT syndrome, the diurnal average of TPE/QT ratio is increased compared to control subjects.
“In patients with short QT syndrome (SQTS), which carries a high risk of sudden cardiac death, Anttonen and coworkers 33 measured the T-wave peak to T-wave end interval (TPE) and found an increased diurnal average of TPE/QT ratio, as compared to controlled subjects, showing an increased transmural dispersion of repolarization, explaining possibly the increased vulnerability to ventricular arrhythm”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [33] 33. Anttonen O, Vaananen H, Junttila J, et al. Electrocardio- graphic transmural dispersion of repolarization in patients with inherited short QT syndrome. Ann Noninvasive Elec- trocardiol 2008;13:295-300. source
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- Premisecitation
The criteria of frontal plane F waves is the best diagnostic criteria for atrial flutter on the surface ECG.
“The criteria of frontal plane F waves was found to be the best diagnostic criteria for atrial flutter on the surface ECG. 14”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [14] 14. Weinberg KM, Denes P, Kadish AH, et al. Development and validation of diagnostic criteria for atrial flutter in the surface electrocardiogram. Ann Noninvasive Electrocardiol 2008;13:145-154. source
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- Premisecitation
Severe hypothermia induces classical Brugada-like ECG changes that disappear after rewarming to a normal body temperature.
“Severe hypothermia induced classical Brugadalike ECG changes, disappearing after rewarming to a normal body temperature, was observed by Bonnemeier and coworkers.24”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [24] 24. Bonnemeier H, Mauser W, Schunkert H. Brugada-like ECG pattern in severe hypothermia. Circulation 2008;118:977- 978. source
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- Interpretationcitation
Isolated minor nonspecific ST-segment and T-wave abnormalities in older adults may in part represent an arrhythmogenic substrate.
“suggesting that they may in part represent arrhythmogenic substrate.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [4] 4. Kumar A, Prineas RJ, Arnold AM, et al. Prevalence, prog- nosis and implications of isolated minor nonspecific ST- segment and T-wavr abnormalities in older adults. Cardio- vascular Health Study. Circulation 2008;118:2790-2796. source
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- Premisecitation
Ischemic ventricular fibrillation in ST elevation myocardial infarction could be related to the culprit artery being the right coronary and left circumflex arteries.
“Ischemic ventricular fibrillation in ST elevation myocardial infarction could be related to the culprit artery being the right coronary and left cicumflex arteries; in these patients a longer PR and QRS intervals were found and intramural slowed conduction was proposed to be a substrate to the ventricular fibrillation.17”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [17] 17. Lemmert ME, de Jong JSSG, van Stipdonk AMW, et al. Elec- trocardiographic factors playing a role in ischemic ventric- ular fibrillation in ST elevation myocardial infarction are related to the culprit artery. Heart Rhythm 2008;5:71-78. source
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- Premisecitation
Ventricular arrhythmias originating from the junction of the left and right coronary sinuses of Valsalva in the aorta are characterized by a QRS pattern in leads V1-V3.
“Ventricular arrhythmias originating from the junction of the left and right coronary sinuses of Valsalva in the aorta are characterized by a QRS pattern in leads V 1 -V 3 .16”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [16] 16. Yamada T, Yoshida N, Murakami Y, et al. Electrocardio- graphic characteristics of ventricular arrhythmias originat- ing from the junction of the left and right coronary sinuses of Valsalva in the aorta: The activation pattern as a rationale for the electrocardiographic characteristics. Heart Rhythm 2008;5:184-192. source
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- Interpretationcitation
The J-point ST elevation (early repolarization) pattern may become a marker of idiopathic ventricular fibrillation.
“and may thus become a marker of this life-threatening condition.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [5] 5. Rosso R, Kogan E, Belhassen B, et al. J-point elevation in survivors of primary ventricular fibrillation and matched control subjects. Incidence and clinical significance. J Am Coll Cardiol 2008;52:1231-1238. source
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- Premisecitation
Analysis of P-wave morphology derived from P wave signal averaged ECG without the commonly applied bandpass filtering enables identification of the interatrial conduction route with high accuracy.
“Analysis of P-wave morphology derived from P wave signal averaged ECG without the commonly applied bandpass filtering, was shown to enable the identification of the interatrial conduction route with high accuracy.13”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [13] 13. Holmqvist F, Husser D, Tapanainen JM, et al. Interatrial conduction can be accurately determined using standard 12-lead electrocardiography: Validation of P-wave morphol- ogy using electroanatomic mapping in man. Heart Rhythm 2008;5:413-418. source
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- Premisecitation
The negative T wave associated with Type-1 Brugada syndrome is due to a preferential prolongation of repolarization in the epicardium compared with that in the endocardium.
“The same group of investigators supported evidence that the negative T wave associated with Type-1 BS is due to a preferential prolongation of repolarization in the epicardium compared with that in the endocardium.31”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [31] 31. Nagase S, Kusano KF, Morita H, et al. Longer repolariza- tion in the epicardium at the right ventricular outflow tract causes type 1 electrocardiogram in patients with Brugada syndrome. J Am Coll Cardiol 2008;51:1154-61. source
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- Premisecitation
MTWA was not useful as an aid in clinical decision making on implantable cardioverter defibrillator therapy among patients with heart failure and left ventricular systolic dysfunction.
“In contrast to previous studies MTWA was not useful as an aid in clinical decision making on implantable cardioverter defibrillator therapy among patients with heart failure and left ventricular systolic dysfunction.21”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [21] 21. Gold MR, Ip JH, Costantini O, et al. Role of microvolt T- wave alternans in assessment of arrhythmia vulnerability among patients with heart failure and systolic dysfunction. Primary results from the T-wave alternans sudden car- diac death in heart failure trial substudy. Circulation 2008;118:2022-2028. source
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- Interpretationcitation
Autonomic dysregulation may lead to inflammation.
“suggesting that autonomic dysregulation may lead to inflammation.28”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [28] 28. Lampert R, Bremner JD, Shaoyong S, et al. Decreased heart rate variability is associated with higher levels of inflam- mation in middle-aged men. Am Heart J 2008;156:759.e1- 759.e7. source
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- Premisecitation
The multifractal fluctuation analysis method is superior to the wavelet transform modulus maxima method for studying multifractal properties of the heart rate in healthy subjects and patients with left ventricular systolic dysfunction.
“the authors found that the multifractal fluctuation analysis method is superior to the wavelet transform modulus maxima method for studying multifractal properties of the heart rate both in healthy subjects and patients with left ventricular systolic dysfunction.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [8] 8. Galaska R, Makowiec D, Dudkowska A, et al. Compari- son of wavelet transform modulus maxima and multifractal detrended fluctuation analysis of heart rate in patients with systolic dysfunction of left ventricle. Ann Noninvasive Elec- trocardiol 2008;13:155-164. source
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- Premisecitation
Wider QRS after CRT device implantation is an independent predictor of mortality or transplantation.
“Wider QRS after CRT device implantation was found to be an independent predictor of mortality or transplantation.22”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [22] 22. Iler MA, Hu T, Ayyagari S, et al. Prognostic value of electro- cardiographic measurements before an after cardiac resyn- chronization device implantation in patients with heart fail- ure due to ischemic or nonischemic cardiomyopathy. Am J Cardiol 2008;101:359-363. source
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- Premisecitation
In a single family with short QT syndrome, universal correction formulas consistently provided higher values of corrected QT interval duration at the mean Holter heart rate than a subject-specific correction formula.
“Studying a single family with SQTS, Maison-Blanche and coworkers 36 demonstrated that the universal correction-formulas consistently provided higher values of corrected QT interval duration at the mean Holter heart rate than a subjectspecific correction formula; the authors suggested that this formula may provide a better cutoff value definition for the diagnosis of SQTS.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [36] 36. Maison-Blanche P, Maury P, Extramiana F, et al. Electro- cardiographic biomarkers of ventricular repolarisation in a single family of short QT syndrome and the role of the Bazett correction formula. Am J Cardiol 2008;101:855-860. source
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- Premisecitation
Following successful ablation in patients with Wolff-Parkinson-White syndrome, abnormal repolarization gradients resolve over a period of 1 month after a return to normal sinus rhythm, a time course consistent with long-term cardiac memory.
“Following successful ablation the abnormal repolarization gradients resolve over a period of 1 month after a return to normal sinus rhythm, a time course consistent with long-term cardiac memory.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [25] 25. Ghosh S, Rhee EK, Avari JN, et al. Cardiac memory in pa- tients with Wolff-Parkinson-White syndrome. Noninvasive imaging of activation and repolarization before and after catheter ablation. Circulation 2008;118:907-915. source
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- Premisecitation
P-wave dispersion in standard twelve-lead ECG is a good predictor of transition from paroxysmal to persistent atrial fibrillation.
“P-wave dispersion in standard twelve-lead ECG was found to be a good predictor of transition from paroxysmal to persistent atrial fibrillation. 12”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [12] 12. Koide Y, Yotsukura M, Ando H, et al. Usefulness of P-wave dispersion in standard twelve-lead electrocardiography to predict transition from paroxysmal to persistent atrial fib- rillation. Am J Cardiol 2008;102:573-577. source
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- Premisecitation
Abnormal heart rate turbulence is a strong predictor of total mortality and sudden death in congestive heart failure.
“Abnormal heart rate turbulence was documented as a strong predictor of total mortality and sudden death in congestive heart failure.51”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [51] 51. Cygankiewicz I, Zareba W, Vazquez R, et al. Heart rate turbulence predicts all-cause mortality and sudden death in congestive heart failure patients. Heart Rhythm 2008;8:1095-1102. source
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- Premisecitation
The utility for mortality prediction and arrhythmic risk evaluation of microvolt T-wave alternans was demonstrated in ischemic cardiomyopathy.
“The utility for mortality prediction and arrhythmic risk evaluation of microvolt T-wave alternans was demonstrated in ischemic cardiomyopathy.41”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [41] 41. Chan PS, Kereiakes DJ, Bartone C, et al. Usefulness of mi- crovolt T-wave alternans to predict outcomes in patients with ischemic cardiomyopathy beyond one year. Am J Car- diol 2008;102:280-284. source
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- Premisecitation
ECG signs of left atrial abnormality (a prolonged P-wave duration or positive P-wave terminal force in lead V1), if coupled with echocardiographic left atrial abnormalities, increase the predictive value for recurrence of heart failure and mortality compared to the predictive value of echocardiographic left atrial abnormalities alone.
“ECG signs of left atrial abnormality, i.e., a prolonged P-wave duration or positive P-wave terminal force in lead V 1 , if coupled with echocardiographic left atrial abnormalities, increased the predictive value for recurrence of heart failure and mortality, compared to the predictive value of this last test alone.50”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [50] 50. Zieroth S, Malinski M, Ariyarajah V, et al. Risk stratifica- tion for recurrent heart failure in patients post-myocardial infarction with electrocardiographic and echocardiographic left atrial abnormality. Am J Cardiol 2008;101:1373-1378. source
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- Premisecitation
QRS fragmentation in patients with arrhythmogenic right ventricular dysplasia has a high diagnostic value similar to epsilon potentials by a highly amplified and modified recording technique.
“QRS fragmentation in patients with arrhythmogenic right ventricular dysplasia was shown to have a high diagnostic value similar to epsilon potentials by a highly amplified and modified recording technique.48”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [48] 48. Peters S, Trummel M, Koehler B. QRS fragmentation in standard ECG as a diagnostic marker of arrhythmogenic right ventricular dysplasia-cardiomyopathy. Heart Rhythm 2008;5:1417-1421. source
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- Premisecitation
Beat-to-beat QT interval variability is affected by drugs that modulate the autonomic nervous system.
“Mine and coworkers 39 demonstrated that beat-to-beat QT interval variability is affected by drugs that modulate the autonomic nervous system.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [39] 39. Mine T, Shimizo H, Hiromoto K, et al. Beat-to-beat QT in- terval variability is primarily affected by the autonomic ner- vous system. Ann Noninvasive Electrocardiol 2008;13:228- 233. source
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- Premisecitation
In nonischemic cardiomyopathy, a planar QRS-T angle >90° has important prognostic value.
“In nonischemic cardiomyopathy a planar QTS-T angle >90 • was found to have important prognostic value.42”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [42] 42. Pavri BB, Hillis MB, Subacius H, et al. Prognostic value and temporal behavior of the planar QRS-T angle in patients with nonischemic cardiomyopathy. Circulation 2008;117:3181-3186. source
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- May combine two claims. 26
- Classified as probably not a substantial claim. 4
- The quote only partly states this claim. 1
May combine two claims.
PremisecitationIn older adults, isolated minor nonspecific ST-segment and T-wave abnormalities (ST-segment depression or T-wave flattening or inversion <1.0 mm) are significantly associated with risk for all-cause mortality but not with nonfatal myocardial infarction.
“ST-segment depression or T-wave flattening or inversion <1.0 mm was significantly associated with risk for all cause mortality but not with nonfatal myocardial infarction, suggesting that they may in part represent arrhythmogenic substrate.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [4] 4. Kumar A, Prineas RJ, Arnold AM, et al. Prevalence, prog- nosis and implications of isolated minor nonspecific ST- segment and T-wavr abnormalities in older adults. Cardio- vascular Health Study. Circulation 2008;118:2790-2796. source
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PremisecitationNew ECG criteria for lateral myocardial infarction (R/S ratio in V1 ≥ 0.5 and R amplitude in V1 > 3 mm) have very high specificity and lower but very acceptable sensitivity for lateral myocardial infarction.
“New ECG criteria for lateral myocardial infarction (R/S ratioo in V 1 ≥ 0.5 and R amplitude in V 1 > 3 mm) present very high specificity and lower but very acceptable sensitivity for lateral myocardial infarction; new criteria based on R waves in V 2 or T waves in V 1 to V 2 do not discriminate between inferior and lateral myocardial infarction.7”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [7] 7. Bayes de Luna A, Cino J, Goldwasser D, et al. New electro- cardiographic diagnostic criteria for the pathologic R waves in leads V1 and V2 of anatomically lateral myocardial in- farction. J Electrocardiol 2008;42:413-418. source
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May combine two claims.
PremisecitationBody surface maps improve the detection of ST-elevation in the high right anterior, posterior, and right ventricular territories and acute myocardial infarction in the presence of left bundle branch block.
“The use of body surface maps improved the detection of ST-elevation in the high right anterior, posterior, and right ventricular territories and acute myocardial infarction in the presence of left bundle branch block.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [6] 6. Owens C, McClelland A, Walsh S, et al. Comparison of value of leads from body surface maps to 12-lead electro- cardiogram for diagnosis of acute myocardial infarction. Am J Cardiol 2008;102:257-265. source
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PremisecitationAmong highly trained American football players, black athletes have significantly more abnormal ECG patterns compared with their white counterparts, the most common being increased precordial voltages and diffuse T-wave inversions.
“Among highly trained American football players, the black athletes had significantly more abnormal ECG patterns, compared with their white counterparts, the most common being increased precordial voltages and diffuse T-wave inversions.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [10] 10. Magalski A, Maron BJ, Main MJ, et al. Clinical research of race electrocardiographic patterns in elite American football players. J Am Coll Cardiol 2008;51:2250-2255. source
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PremisecitationIn patients with ischemic ventricular fibrillation in ST elevation myocardial infarction, longer PR and QRS intervals were found and intramural slowed conduction was proposed as a substrate.
“in these patients a longer PR and QRS intervals were found and intramural slowed conduction was proposed to be a substrate to the ventricular fibrillation.17”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [17] 17. Lemmert ME, de Jong JSSG, van Stipdonk AMW, et al. Elec- trocardiographic factors playing a role in ischemic ventric- ular fibrillation in ST elevation myocardial infarction are related to the culprit artery. Heart Rhythm 2008;5:71-78. source
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Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.
InterpretationreasoningAs vagal tone is higher at night than during the day, the circadian increase of the sympathetic tone during the day may help to prevent arrhythmias.
“As the vagal tone is higher at night than during the day, the circadian increase of the sympathetic tone during the day may help to prevent arrhythmias.”
Quote in the paperNot a substantial claimMay combine two claims.
PremisecitationIn Brugada syndrome, spontaneous atrial fibrillation, occurring mostly at night, and atrial vulnerability are important predictors of ventricular fibrillation events that cause sudden cardiac death.
“A study by Kusano and coworkers 32 examined the relationships of atrial fibrillation with genetic, clinical and electrophysiological backgrounds in BS and showed that spontaneous AF, occurring mostly at night, and atrial vulnerability are important predictors of VF events that cause sudden cardiac death.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [32] 32. Kusano KF, Taniyama M, Nakamura K, et al. Atrial fibril- lation in patients with Brugada syndrome. Relationships of gene mutation, electrophysiology and clinical backgrounds. J Am Coll Cardiol 2008;51:1169-1175. source
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PremisecitationAltered ventricular stretch and induction of altered contractile patterns contribute to the initiation of cardiac memory.
“Altered ventricular stretch and induction of altered contractile patterns and altered ventricular stretch were demonstrated to contribute to the initiation of cardiac memory.35”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [35] 35. Sosunov EA, Anyukhovsky EP, Rosen MR. Altered ven- tricular stretch contributes to initiation of cardiac memory. Heart Rhythm 2008;5:106-113. source
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PremisecitationIn short QT syndrome patients, the inscription of the U wave coincided with aortic valve closure and isovolumic relaxation, supporting the hypothesis that the U wave is related to mechanical stretch.
“Electrocardiographic and echocardiographic correlations 34 showed that the inscription of the U wave in SQTS patients coincided with aortic valve closure and isovolumic relaxation, supporting the hypothesis that the U wave is related to mechanical stretch.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [34] 34. Schimpf R, Antzelevitch C, Haghi D, et al. Electromechan- ical coupling in patients with the short QT syndrome: Fur- ther insights into the mechanoelectrical hypothesis of the U wave. Heart Rhythm 2008;5:241-245. source
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Classified as probably not a substantial claim.
PremisecitationOptimal left ventricular lead position is important in obtaining benefits from cardiac resynchronization therapy.
“The importance of optimal left ventricular lead position was stressed by Ypenburg and coworkers in obtaining benefits from cardiac resynchronization therapy (CRT).18”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [18] 18. Ypenburg C, van Bommel RJ, Delgado V, et al. Optimal left ventricular lead position predicts reverse remodeling and survival after cardiac resynchronization therapy. J Am Coll Cardiol 2008;52:1410-2. source
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PremisecitationPatients with RBBB undergoing CRT had low rates of symptomatic and echocardiographic response, and their survival free from orthotopic heart transplantation or ventricular assist device placement was significantly worse than in patients with LBBB.
“Patients with RBBB undergoing CRT had low rates of symptomatic and echocardiographic response, and their survival free from orthotopic heart transplantation or ventricular assist device placement was significantly worse than in patients with LBBB.19”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [19] 19. Adelstein EC, Sabs S. Usefulness of baseline electrocardio- graphic QRS complex pattern to predict response to cardiac resynchronization. Am J Cardiol 2009;103:238-242. source
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Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationAn exceptionally narrow QRS complex has a prevalence of 0.8% in a large database, and an inverse relation was found between QRS duration and heart rate.
“An exceptionally narrow QRS complex (prevalence of 0.8% in a large database) an inverse relation was found between QRS duration and heart rate.26”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [26] 26. Childers R, Holmes A, Kocherginskky M, et al. Features of an exceptionally narrow QRS data set. J Electrocardiol 2008;41:501-507. source
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PremisecitationIn left bundle-branch block patients with left-ventricular systolic dysfunction, myocardial blood flow is preserved while myocardial blood flow reserve is reduced.
“Hayat and coworkers investigated the cardiac effects of left bundle-branch block (LBBB) using myocardial contrast echocardiography and demonstrated that myocardial blood flow is preserved while myocardial blood flow resreve is reduced in LBBB patients with left-ventricular systolic dysfunction.27”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [27] 27. Hayat SA, Dwivedi G, Jacobsen A, et al. Effects of left bundle-branch block on cardiac structure, function, per- fusion, and perfusion reserve. Implications for myocardial contrast echocardiography versus radionuclide perfusion imaging for the detection of coronary artery diseade. Cir- culation 2008;117:1832-1841. source
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Classified as probably not a substantial claim.
InterpretationcitationA subject-specific correction formula may provide a better cutoff value definition for the diagnosis of short QT syndrome.
“the authors suggested that this formula may provide a better cutoff value definition for the diagnosis of SQTS.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [36] 36. Maison-Blanche P, Maury P, Extramiana F, et al. Electro- cardiographic biomarkers of ventricular repolarisation in a single family of short QT syndrome and the role of the Bazett correction formula. Am J Cardiol 2008;101:855-860. source
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The quote only partly states this claim.
InterpretationcitationAlterations in PR interval, T-wave amplitude and area, and QTc during induced hypoglycemia may be of importance in provoking severe arrhythmia in diabetic patients.
“alterations that may be of importance in provoking severe arrhythmia in diabetic patients.23”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [23] 23. Laitinen T, Lyyra-Laitinen T, Huopio H, et al. Electro- cardiographic alterations during hyperinsulinemic hypo- glycemia in healthy subjects. Ann Noninvasive Electrocar- diol 2008;13:97-105. source
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InterpretationcitationThe increased diurnal average of TPE/QT ratio in short QT syndrome shows increased transmural dispersion of repolarization, possibly explaining the increased vulnerability to ventricular arrhythmias.
“showing an increased transmural dispersion of repolarization, explaining possibly the increased vulnerability to ventricular arrhythmias of these patients.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [33] 33. Anttonen O, Vaananen H, Junttila J, et al. Electrocardio- graphic transmural dispersion of repolarization in patients with inherited short QT syndrome. Ann Noninvasive Elec- trocardiol 2008;13:295-300. source
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May combine two claims.
PremisecitationFragmented QRS is a substrate for spontaneous fibrillation in patients with Brugada syndrome and predicts a high risk of syncope.
“Fragmented QRS was found to be a substrate for spontaneous fibrillation in patients with BS and predicted a high risk of syncope in these patients.30”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [30] 30. Morita H, Kusano KF, Mjura D, et al. Fragmented QRS as a marker of conduction abnormality and a predictor of prog- nosis of Brugada syndrome. Circulation 2008;118:1697- 1704. source
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PremisecitationInduced hypoglycemia in healthy subjects is associated with a significantly decreased PR interval and T-wave amplitude and area and increased QTc interval.
“Induced hypoglycemia in healthy subjects was associated with a significantly decreased PR interval and T-wave amplitude and area and increased QTc interval, alterations that may be of importance in provoking severe arrhythmia in diabetic patients.23”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [23] 23. Laitinen T, Lyyra-Laitinen T, Huopio H, et al. Electro- cardiographic alterations during hyperinsulinemic hypo- glycemia in healthy subjects. Ann Noninvasive Electrocar- diol 2008;13:97-105. source
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PremisecitationIn 59 female patients with stress (takotsubo) cardiomyopathy, 56% had anterior ST-elevation with magnitudes less than in controls with left anterior descending coronary artery occlusions; other patients without ST-elevation had diffuse T-wave inversion, healed anterior infarctions or nonspecific changes; 8.5% had a normal ECG.
“Scrutinizing the ECG findings in 59 female patients with stress (takotsubo) cardiomyopathy showed in 56% of the patients anterior STelevation, with magnitudes less than in controls with left anterior descending coronary artery occlusions; in other patients without ST-elevation, the ECG revealed diffuse T-wave inversion, healed anterior infarctions or nonspecific changes; in 8.5% the ECG was normal”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [29] 29. Sharkey SW, Lesser JR, Menon M, et al. Spectrum and sig- nificance of electrocardiographic patterns, troponin levels, and thrombolysis in myocardial infarctiom frame count in patients with sterss (tako-tsubo) cardiomyopathy and com- parison to those in patients with ST-elevation anterior wall myocardial infarction. Am J Cardiol 2008;101:1723-1728. source
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PremisecitationMicrovolt T-wave alternans classification did not predict the risk of ventricular tachyarrhythmic events in ICD-treated patients, although total mortality was significantly increased if MTWA was positive.
“Microvolt T-wave alternans (MTWA) classification did not predict the risk of ventricular tachyarrhythmic events in ICD treated patients, although total mortality was significantly increased if MTWA was positive.20”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [20] 20. Chow T, Kereiakes DJ, Onufer J, et al. Does microvolt T- wave alternans testing predict ventricular tachyarrhythmias in patients with ischemic cardiomyopathy and prophylactic defibrillators? The MASTER (Microvolt T Wave Alternans Testing for Risk Stratification of Post-Myocardial Infarction Patients) trial. J Am Coll Cardiol 2008;53:1607-1615. source
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May combine two claims.
PremisecitationA fragmented wide QRS is a sign of myocardial scar and an independent predictor of mortality.
“A fragmented wide QRS was found to be a sign of myocardial scar and an independent predictor of mortality in the investigation of Das and coworkers 47”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [47] 47. Das MK, Suradi H, Maskoun W, et al. Fragmented wide QRS on a 12-lead ECG: A sign of myocardial scar and poor prognosis. Circ Arrhythmia Electrophysiol 2008;1:258-268. source
Not checked in the free run.
May combine two claims.
PremisecitationThe predictive value of various heart rate parameters during exercise tests and of ventricular conduction blocks and left anterior hemiblock were reconfirmed recently.
“The predictive value of various heart rate parameters during exercise tests 44 and of ventricular conduction blocks and left anterior hemiblock 45 were also reconfirmed recently.”
Quote in the paperNot a substantial claim0 of 2 sources checked- cites [44] 44. Adabag AS, Grandits GA, Prineas RJ, et al. Relation of heart rate parameters during exercise test to sudden death and all-cause mortality in asymptomatic men. Am J Cardiol 2008;101:1437-1443. source
Not checked in the free run.
- cites [45] 45. Miller WL, Hodge DO, Hammill SC, et al. Association of uncomplicated electrocardiographic conduction blocks with subsequent cardiac morbidity in a community-based population (Olmsted County, Minnesota). Am J Cardiol 2008;101:102-106. source
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InterpretationcitationThe parasympathetic system may act preferentially on the QT interval itself while the sympathetic system appears to affect QT interval variability.
“These finding indicated that the parasympathetic system may act preferentially on the QT interval itself while the sympathetic system appears to affect QT interval variability.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [39] 39. Mine T, Shimizo H, Hiromoto K, et al. Beat-to-beat QT in- terval variability is primarily affected by the autonomic ner- vous system. Ann Noninvasive Electrocardiol 2008;13:228- 233. source
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PremisecitationIn patients after myocardial infarction, ST-segment elevation in anterior leads is a significant predictor of events in women, whereas ST depression in lateral leads is a significant predictor in men.
“In patients after myocardial infarction STsegment elevation in anterior leads was a significant predictor of events in women, whereas ST depression in lateral leads was a significant predictor in men.46”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [46] 46. Mieszczanska H, Pietrasik G, Piotrowicz K, et al. Gender- related differences in electrocardiographic parameters and their association with cardiac events in patients after my- ocardial infarction. Am J Cardiol 2008;101:20-24. source
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May combine two claims.
PremisecitationAbnormal heart rate recovery and chronotropic response to exercise identify patients with higher rates of all-cause mortality or nonfatal myocardial infarction and provide additional risk stratification among patients who were low-risk according to the Duke Treadmill Score.
“Abnormal heart rate recovery and chronotropic response to exercise identified patients with higher rates of all-cause mortality or nonfatal myocardial infarction and provided additional risk stratification among patients who were low-risk according to the Duke Treadmill Score.53”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [53] 53. Maddox TM, Ross C, Ho M, et al. The prognostic impor- tance of abnormal heart recovery and chronotrophic re- sponse among exercise treadmill test patients. Am Heart J 2008;156:736-744. source
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PremisecitationIn nonischemic cardiomyopathy, blunted baroreflex activity is a significant predictor of arrhythmic events, but heart rate variability and turbulence did not yield predictive power.
“In this disease a blunted baroreflex activity was a significant predictor of arrhythmic events but heart rate variability and turbulence did not yield predictive power in their patients.43”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [43] 43. Klingenheben T, Plaszynski P, Hohnloser SH. Heart rate turbulence and other autonomic risk markers for arrhyth- mia risk stratification in dilated cardiomyopathy. J Electro- cardiol 2008;41:306-311. source
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PremisecitationBritish investigators found a limited incremental value of the resting ECG in ambulatory patients with suspected angina, increased somewhat by adding exercise ECG data.
“Although British investigators found a limited incremental value of the resting ECG in ambulatory patients with suspected angina, increased somewhat by adding exercise ECG data, 40 several other recent investigators demonstrated prognostic value of various ECG parameters.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [40] 40. Sekhri N, Feder GS, Junghans C, et al. Incremental prog- nostic value of the exercise electrocardiogram in the initial assessment of patients with suspected angina: Cohort study. BMJ 2008;337:a2240. source
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May combine two claims.
PremisecitationThe simple visual criterion of an upward pointing T wave in aVR in males is associated with an annual cardiovascular mortality of 3.4% and a five times risk.
“The simple visual criterion of an upward pointing T wave in aVR in males was associated with an annual cardiovascular mortality of 3.4% and the risk of five times.49”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [49] 49. Tan SY, Engel G, Myers J, et al. The prognostic value of T wave amplitude in lead aVR in males. Ann Noninvasive Electrocardiol 2008;13:113-119. source
Not checked in the free run.
May combine two claims.
PremisecitationShort-term beat-to-beat variability of QT intervals is increased in patients with drug-induced long-QT syndrome and was suggested to be used for identification of patients at risk for potentially life-threatening arrhythmias.
“Short-term beat-to-beat variability of QT intervals was found to be increased in patients with drug-induced long-QT syndrome and was suggested to use for the identification of patients at risk for potentially life-threatening arrhythmias.38”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [38] 38. Hinterseer M, Thomson MB, Beckmann BM, et al. Beat-to- beat variability of QT intervals is increased in patients with drug-induced long-QT syndrome: A case control pilot study. Euro Heart J 2008;29:185-190. source
Not checked in the free run.
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Fragmented Wide QRS on a 12-Lead ECG: A Sign of Myocardial Scar and Poor Prognosis
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Electrocardiographic Alterations during Hyperinsulinemic Hypoglycemia in Healthy Subjects
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Altered ventricular stretch contributes to initiation of cardiac memory
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The Prognostic Value of T Wave Amplitude in Lead aVR in Males
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Beat‐to‐Beat QT Interval Variability Is Primarily Affected by the Autonomic Nervous System
Mine, T., Shimizu, H., Hiromoto, K., Furukawa, Y., Kanemori, T., Nakamura, H., Masuyama, T., & Ohyanagi, M. (2008) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2008.00225.x · Cited by 24 · see citing works
Ethnic Differences in ST Height in the Multiethnic Study of Atherosclerosis
Reddy, V. K., Gapstur, S. M., Prineas, R., Colangelo, L. A., Ouyang, P., & Kadish, A. H. (2008) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2008.00252.x · Cited by 20 · see citing works
IKr channel blockade to unmask occult congenital long QT syndrome
Jeyaraj, D., Abernethy, D. P., Natarajan, R. N., Dettmer, M. M., Dikshteyn, M., Meredith, D. M., Patel, K., Allareddy, R. R., Lewis, S. A., & Kaufman, E. S. (2008) · Heart Rhythm · doi:10.1016/j.hrthm.2007.08.031 · Cited by 18 · see citing works
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Brugada-Like ECG Pattern in Severe Hypothermia
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Weinberg, K. M., Denes, P., Kadish, A. H., & Goldberger, J. J. (2008) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2008.00214.x · Cited by 12 · see citing works
Ariyarajah, V., Malinski, M., Zieroth, S., Harizi, R., Morris, A., & Spodick, D. H. (2008) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2008.01.013 · Cited by 11 · see citing works
Features of an exceptionally narrow QRS data set
Childers, R., Holmes, A., Kocherginsky, M., Childers, D., & Pariser, J. (2008) · Journal of Electrocardiology · doi:10.1016/j.jelectrocard.2008.06.014 · Cited by 9 · see citing works
The Riddle of Determining Cardiac Resynchronization Therapy Response
Marwick, T. H., & Starling, R. C. (2008) · Journal of the American College of Cardiology · doi:10.1016/j.jacc.2008.07.036 · Cited by 9 · see citing works
The Year 2005 in Electrocardiology
Stern, S. (2006) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2006.00100.x · Cited by 8 · see citing works
Self-citationWood shop, Sun Tzu, and patient selection for cardiac resynchronization therapy
Sweeney, M. O. (2011) · Heart Rhythm · doi:10.1016/j.hrthm.2011.03.013 · Cited by 7 · see citing works
The Year of 2007 in Electrocardiology
Stern, S. (2008) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2008.00236.x · Cited by 3 · see citing works
Self-citationThe Year of 2006 in Electrocardiology
Stern, S. (2007) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2007.00155.x · Cited by 3 · see citing works
Self-citation
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The Year of 2009 in Electrocardiology
Stern, S. (2010) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2010.00394.x · Cited by 1 · see citing works
Self-citation
- Authors
- Stern, S.
- Affiliations
- Hebrew University of Jerusalem (IL)
- Corresponding author
- Stern, Shlomo
- Venue
- Annals of Noninvasive Electrocardiology
- Publisher
- Wiley
- Published
- 2010-01
- Volume
- 15
- Issue
- 1
- Pages
- 85-89
- ISSN
- 1082-720X (ISSN-L)
- 1542-474X
- PMC
- PMC6932019
- OpenAlex
- W1987660835
- Cited by
- 1
- References
- 55
- FWCI
- 0.22
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Annals of Noninvasive Electrocardiology (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › ECG Monitoring and Analysis
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
- Keywords
- electrocardiology, noninvasive electrocardiography
- MeSH terms
- Arrhythmias, Cardiac, Cardiology, Electrocardiography, Heart Diseases, Heart Rate, Humans, Long QT Syndrome, Prognosis, Myocardial Ischemia, Brugada Syndrome
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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