Cited by 79Attention Deficit Hyperactivity DisorderHeart Rate Variability and Autonomic ControlCardiac electrophysiology and arrhythmias

Heart rate variability and methylphenidate in children with ADHD

Buchhorn, Reiner, Conzelmann, Annette, Willaschek, Christian, Störk, Dagmar, Taurines, Regina, Renner, Tobias J.·2012·ADHD Attention Deficit and Hyperactivity Disorders

Abstract

Although an extensive number of studies support the efficacy and tolerability of stimulants in the treatment of attention deficit/hyperactivity disorder (ADHD), in recent years, increasing concerns have been raised about their cardiovascular safety. We investigated whether a time domain analysis of heart rate variability (HRV) recordings in 24-h ECG under medication with stimulants yielded new information about therapy control in ADHD. We analysed the HRV parameter standard deviation of all normal sinus RR intervals over 24 h (SDNN), percentage of successive normal sinus RR intervals > 50 ms (pNN50) and root-mean-square of the successive normal sinus RR interval difference (rMSSD) from 23 children diagnosed by ADHD (19 boys and 4 girls), aged 10.5 ± 2.2 years, who were consecutively referred to our outpatient clinic for paediatric cardiology. Eleven children received medication with methylphenidate (MPH), while twelve children were initially examined without medication. Of these, eight probands were re-examined after therapy with MPH was established. Controls comprised 19 children (10 boys, 9 girls) from our Holter ECG data base without any cardiac or circulatory disease. Compared to healthy controls, the ADHD children with and without MPH treatment showed significantly higher mean heart rates (ADHD without MPH: 94.3 ± 2.2; ADHD with MPH: 90.5 ± 1.8, controls: 84.7 ± 1.8). pNN50 (ADHD without MPH: 6.5 ± 2.7; ADHD with MPH: 14.2 ± 6.9, controls: 21.5 ± 9.0) and rMSSD (ADHD without MPH: 26.1 ± 4.1; ADHD with MPH: 36.7 ± 8.3, controls: 44.5 ± 10.1) were lowest in ADHD children without MPH, middle in ADHD children with MPH and highest in controls. SDNN values were not significantly different. The hourly analysis shows highly significant reduced pNN50 and rMSSD values in untreated ADHD children between 5:00 pm and 6:00 am while the pattern approaches to levels of controls during MPH treatment. Data of this pilot study indicate a decreased vagal tone with significantly diminished HRV and higher heart rates in unmedicated ADHD children. These parameters of autonomic activation are ameliorated by MPH treatment. No evidence for negative impact of MPH on HRV was detected. Further studies will clarify a potential cardio-protective effect of MPH in ADHD.

Integrity signals

Registry

Crossref · 10.1007/s12402-012-0072-8

Cites

31 of 31 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • In 31 children with ADHD, ADHD is associated with a marked increase in heart rate in the afternoon.

    “Buchhorn et al. (2012) also examined diurnal changes in heart rate, and heart rate variability, in a case-control study of 31 children with ADHD, and report that ADHD was associated with a marked increase in heart rate in the afternoon and less pronounced diurnal variation in heart rate variability.”
  • In 31 children with ADHD, there is less pronounced diurnal variation in heart rate variability.

    “Buchhorn et al. (2012) also examined diurnal changes in heart rate, and heart rate variability, in a case-control study of 31 children with ADHD, and report that ADHD was associated with a marked increase in heart rate in the afternoon and less pronounced diurnal variation in heart rate variability.”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Buchhorn, R., Conzelmann, A., Willaschek, C., Störk, D., Taurines, R., & Renner, T. J.
Affiliations
  • Caritas-Krankenhaus Bad Mergentheim (DE)
  • University of Würzburg (DE)
Corresponding author
Buchhorn, Reiner
Venue
ADHD Attention Deficit and Hyperactivity Disorders
Published
2012-02-11
Volume
4
Issue
2
Pages
85-91
ISSN
  • 1866-6116 (ISSN-L)
  • 1866-6647
OpenAlex
W1976593625
Cited by
79
References
31
Citations by year
2026: 4 · 2025: 4 · 2024: 8 · 2023: 6 · 2022: 5 · 2021: 4 · 2020: 7 · 2019: 2 · 2018: 4 · 2017: 5 · 2016: 6 · 2015: 5 · 2014: 7 · 2013: 7 · 2012: 5
FWCI
5.47
Type
journal article
Language
en
Open access
closed
Locations
  • ADHD Attention Deficit and Hyperactivity Disorders (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
Keywords
heart rate variability, methylphenidate, attention deficit hyperactivity disorder, children, stimulant medication, cardiovascular safety, vagal tone, autonomic nervous system, heart rate, pNN50, RMSSD, SDNN, Holter monitoring, time-domain analysis, treatment response monitoring, pediatric cardiology
MeSH terms
Central Nervous System Stimulants, Attention Deficit Disorder with Hyperactivity, Child, Circadian Rhythm, Female, Heart Rate, Humans, Male, Methylphenidate, Electrocardiography, Ambulatory

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.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review