Cited by 65Congenital Heart Disease StudiesCardiovascular and exercise physiologyCardiovascular Effects of Exercise

The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.

Longitudinal Exercise Capacity of Patients With Repaired Tetralogy of Fallot

Open access

Abstract

Patients with repaired tetralogy of Fallot have a reduced percentage of predicted peak oxygen consumption (VO(2)) and percentage of oxygen pulse (O(2)P%) compared to healthy controls. Because data regarding the progression of exercise intolerance in these patients is limited, we sought to analyze the serial exercise data from patients with Tetralogy of Fallot to quantify the changes in their exercise capacity over time and to identify associations with clinical and cardiac magnetic resonance imaging variables. The data from cardiopulmonary exercise tests (CPXs) from 2002 to 2010 for patients with repaired tetralogy of Fallot with ≥2 CPXs separated by ≥12 months were analyzed. Tests occurring after interventional catheterization or surgery were excluded. A total of 70 patients had 179 CPXs. They had a median age at the initial study of 23.6 years and an interval between the first and last CPX of 2.8 years. At the initial CPX, the peak VO(2) was 27.6 ± 8.8 ml/kg/min (78 ± 19% of predicted), and the peak O(2)P% was 89 ± 22% of predicted. At the most recent study, the peak VO(2) averaged 25.0 ± 7.4 ml/kg/min (73 ± 16% of predicted), and the peak O(2)P% averaged 83 ± 20% (p <0.01) for each versus the initial CPX. The decrease in the peak VO(2) was strongly associated with a decrease in O(2)P% and an increase (worsening) in the slope of the minute ventilation-versus-carbon dioxide production relation. Changes in the peak VO(2) did not correlate with concomitant changes in any other CPX variable. The rate of decrease was not related to a history of shunt palliation, age at CPX, or any other baseline clinical parameter, including cardiac magnetic resonance measurements. In conclusion, the exercise capacity of patients with repaired tetralogy of Fallot tends to decrease over time. This deterioration is variable and unpredictable and is primarily related to a decrease in the forward stroke volume at peak exercise.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.amjcard.2011.02.349

Cites

30 of 30 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Flagged first, then by citations

Show all 30 references

Cited by

Sorted by citations

See all 65

Metadata

Authors
Kipps, A. K., Graham, D. A., Harrild, D. M., Lewis, E., Powell, A. J., & Rhodes, J.
Affiliations
  • University of California, San Francisco (US)
  • Boston Children's Hospital (US)
Corresponding author
Kipps, Alaina K.
Venue
The American Journal of Cardiology
Publisher
Elsevier BV
Published
2011-07
Volume
108
Issue
1
Pages
99-105
ISSN
0002-9149 (ISSN-L)
OpenAlex
W2162171163
Cited by
65
References
30
Citations by year
2026: 3 · 2025: 4 · 2024: 5 · 2023: 5 · 2022: 6 · 2021: 7 · 2020: 5 · 2019: 2 · 2018: 5 · 2017: 1 · 2016: 2 · 2015: 6 · 2014: 1 · 2013: 8 · 2012: 4
FWCI
3.13
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Heart, Lung, and Blood Institute (T32HL007572)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Congenital Heart Disease Studies
  • Health Sciences › Medicine › Physiology (medical) › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Effects of Exercise
Keywords
repaired tetralogy of Fallot, exercise capacity, peak oxygen uptake, oxygen pulse, exercise intolerance, cardiopulmonary exercise testing, stroke volume, cardiac magnetic resonance imaging
MeSH terms
Adolescent, Child, Child, Preschool, Exercise Test, Female, Follow-Up Studies, Cardiac Catheterization, Cardiac Surgical Procedures, Humans, Infant, Infant, Newborn, Male, Oxygen Consumption, Prognosis, Retrospective Studies, Tetralogy of Fallot, Exercise Tolerance, Young Adult

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