Document Detail

Effect of pectus excavatum deformity on cardiorespiratory fitness in adolescent boys.
MedLine Citation:
PMID:  16275799     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine the magnitude of the effects of pectus excavatum deformity on endurance fitness and cardiorespiratory functional reserve in adolescent boys. DESIGN: Cross-sectional comparison of cardiac and ventilatory variables at rest and during a maximal cycle exercise test. SETTING: Pediatric exercise-testing laboratory. PARTICIPANTS: Twelve boys (mean +/- SD age, 14.1 +/- 1.8 years; age range, 11.8-18.0 years) with moderate-to-severe pectus excavatum deformity (mean +/- SD Haller index, 3.95 +/- 0.88) and 20 control boys (mean +/- SD age, 12.5 +/- 0.4 years; age range, 12.1-13.5 years) without musculoskeletal deformity. MAIN OUTCOME MEASURES: Endurance fitness (physical work capacity); respiratory rate, tidal volume, and minute ventilation; and cardiac output and stroke volume by Doppler echocardiography. RESULTS: Patients with pectus deformity had significantly lower endurance fitness than controls (mean +/- SD physical work capacity, 2.60 +/- 0.28 W . kg(-1) vs 3.11 +/- 0.45 W . kg(-1)) and reduced mean +/- SD values for maximal cardiac index (10.6 +/- 1.6 L . min(-1) vs 12.0 +/- 2.2 L . min(-1)) and peak tidal volume (3.02 +/- 0.27 mL . kg(-1) . 10(-2) vs 3.46 +/- 0.30 mL . kg(-1) . 10(-2)). However, considerable overlap was observed in these values between the 2 groups. CONCLUSIONS: As a group, boys with pectus excavatum deformity have lower endurance fitness than controls, and this is associated with reduced cardiac output and tidal volume responses to exercise. However, the wide variability of these measures makes it difficult to assign pectus deformity as a cause of exercise intolerance in individual patients.
Thomas Rowland; Kevin Moriarty; Gregory Banever
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Archives of pediatrics & adolescent medicine     Volume:  159     ISSN:  1072-4710     ISO Abbreviation:  Arch Pediatr Adolesc Med     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2005-11-08     Completed Date:  2005-11-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9422751     Medline TA:  Arch Pediatr Adolesc Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1069-73     Citation Subset:  AIM; IM    
Division of Pediatric Cardiology, Department of Pediatrics, Baystate Medical Center Children's Hospital, Springfield, MA 01199, USA.
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MeSH Terms
Cardiac Output / physiology*
Cross-Sectional Studies
Echocardiography, Doppler
Exercise Test
Exercise Tolerance / physiology*
Funnel Chest / physiopathology*,  radiography,  ultrasonography
Physical Endurance / physiology*
Severity of Illness Index
Tidal Volume / physiology
Tomography, X-Ray Computed

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