Document Detail


Non-invasive measurement of the response of right ventricular pressure to exercise, and its relation to aerobic capacity.
MedLine Citation:
PMID:  19674500     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
INTRODUCTION: Exercise echocardiography assesses exercise-induced pulmonary hypertension. The upper normal limit of right ventricular systolic pressure during exercise is not well established. Our study aims to investigate the response of right ventricular systolic pressure in relation to aerobic capacity. METHODS AND RESULTS: Cardiopulmonary exercise testing using a treadmill, and echocardiography during supine cycling, were performed in 113 healthy volunteers aged 13 to 25 years. Maximal right ventricular systolic pressure during evaluable exercise studies obtained in 108 subjects showed a Gaussian distribution only after separating the endurance trained subjects, specifically 12 athletes with Z-score of peak oxygen uptake higher than 2.0, from the normally trained group of 97 subjects. Maximal right ventricular systolic pressure during exercise in the normally trained group showed a mean of 38.0 millimetres of mercury, with standard deviation of 7.2, a median value of 39.0, and a range from 17 to 63, and the 95th percentile was 51 millimetres of mercury. In the athletes, the maximal right ventricular systolic pressure was higher, with a median of 55.5, a range from 28 to 69, this being significant, with p equal to 0.004). Of the 12 athletes, 8 (67%) showed a response of right ventricular systolic pressure to exercise exceeding 50 millimetres of mercury, but only 8 of 97 normally trained subjects (8%) showed a similar response, this also being significant, with p less than 0.001. CONCLUSIONS: Our study confirms the great variability in the response of right ventricular systolic pressure to exercise in healthy individuals, with 50 millimetres of mercury representing the upper normal limit. Endurance-trained athletes show higher levels, and two-thirds have abnormal responses exceeding 50 millimetres of mercury.
Authors:
Thomas M??ller; Kari Peersen; Eirik Pettersen; Erik Thaulow; Henrik Holmstr??m; Per Morten Fredriksen
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-08-13
Journal Detail:
Title:  Cardiology in the young     Volume:  19     ISSN:  1467-1107     ISO Abbreviation:  Cardiol Young     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-10-14     Completed Date:  2010-02-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9200019     Medline TA:  Cardiol Young     Country:  England    
Other Details:
Languages:  eng     Pagination:  465-73     Citation Subset:  IM    
Affiliation:
Pediatric Department, Vestfold Hospital Trust, T??nsberg, Norway. thomas.moller@siv.no
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Echocardiography, Stress
Exercise / physiology*
Exercise Tolerance*
Female
Humans
Male
Systole
Ventricular Function, Right*
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Catheter closure of an atrial septal defect in anatomically corrected malposition with left juxtapos...
Next Document:  Totally anomalous pulmonary venous connection to superior caval vein after an intracytoplasmic injec...