Do rebreathing manoeuvres for non-invasive measurement of cardiac output during maximum exercise test alter the main cardiopulmonary parameters?
Aged
Anaerobic Threshold
Cardiac Output
Cardiorespiratory Fitness
Exercise Test
Exercise Tolerance
Female
Heart Failure
/ diagnosis
Humans
Lung
/ physiopathology
Male
Middle Aged
Predictive Value of Tests
Pulmonary Ventilation
Reproducibility of Results
Respiration
Retrospective Studies
Stroke Volume
Ventricular Function, Left
Cardiac output
cardiopulmonary exercise test
inert gas rebreathing
Journal
European journal of preventive cardiology
ISSN: 2047-4881
Titre abrégé: Eur J Prev Cardiol
Pays: England
ID NLM: 101564430
Informations de publication
Date de publication:
10 2019
10 2019
Historique:
pubmed:
27
4
2019
medline:
22
9
2020
entrez:
27
4
2019
Statut:
ppublish
Résumé
Inert gas rebreathing has been recently described as an emergent reliable non-invasive method for cardiac output determination during exercise, allowing a relevant improvement of cardiopulmonary exercise test clinical relevance. For cardiac output measurements by inert gas rebreathing, specific respiratory manoeuvres are needed which might affect pivotal cardiopulmonary exercise test parameters, such as exercise tolerance, oxygen uptake and ventilation vs carbon dioxide output (VE/VCO We retrospectively analysed cardiopulmonary exercise testing of 181 heart failure patients who underwent both cardiopulmonary exercise testing and cardiopulmonary exercise test+cardiac output within two months (average 16 ± 15 days). All patients were in stable clinical conditions (New York Heart Association I-III) and on optimal medical therapy. The majority of patients were in New York Heart Association Class I and II (78.8%), with a mean left ventricular ejection fraction of 31 ± 10%. No difference was found between the two tests in oxygen uptake at peak exercise (1101 (interquartile range 870-1418) ml/min at cardiopulmonary exercise test vs 1103 (844-1389) at cardiopulmonary exercise test-cardiac output) and at anaerobic threshold. However, anaerobic threshold and peak heart rate, peak workload (75 (58-101) watts and 64 (42-90), The similar anaerobic threshold and peak oxygen uptake in the two tests with a lower peak workload and higher VE/VCO
Sections du résumé
BACKGROUND
Inert gas rebreathing has been recently described as an emergent reliable non-invasive method for cardiac output determination during exercise, allowing a relevant improvement of cardiopulmonary exercise test clinical relevance. For cardiac output measurements by inert gas rebreathing, specific respiratory manoeuvres are needed which might affect pivotal cardiopulmonary exercise test parameters, such as exercise tolerance, oxygen uptake and ventilation vs carbon dioxide output (VE/VCO
METHOD
We retrospectively analysed cardiopulmonary exercise testing of 181 heart failure patients who underwent both cardiopulmonary exercise testing and cardiopulmonary exercise test+cardiac output within two months (average 16 ± 15 days). All patients were in stable clinical conditions (New York Heart Association I-III) and on optimal medical therapy.
RESULTS
The majority of patients were in New York Heart Association Class I and II (78.8%), with a mean left ventricular ejection fraction of 31 ± 10%. No difference was found between the two tests in oxygen uptake at peak exercise (1101 (interquartile range 870-1418) ml/min at cardiopulmonary exercise test vs 1103 (844-1389) at cardiopulmonary exercise test-cardiac output) and at anaerobic threshold. However, anaerobic threshold and peak heart rate, peak workload (75 (58-101) watts and 64 (42-90),
CONCLUSION
The similar anaerobic threshold and peak oxygen uptake in the two tests with a lower peak workload and higher VE/VCO
Identifiants
pubmed: 31023097
doi: 10.1177/2047487319845967
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1616-1622Commentaires et corrections
Type : CommentIn