Effects of exercise position on the ventilatory responses to exercise in chronic heart failure

Objective: Patients with heart failure frequently complain of orthopnoea. The objective was to assess the ventilatory response of patients with chronic heart failure during erect and supine exercise. Design: Maximal incremental exercise testing with metabolic gas exchange measurements in erect and s...

Full description

Saved in:
Bibliographic Details
Published in:International journal of cardiology 1998-09, Vol.66 (1), p.59-63
Main Authors: Armour, William, Clark, Andrew L., McCann, Gerald P., Hillis, W.Stewart
Format: Article
Language:English
Subjects:
Biological and medical sciences
Cardiology. Vascular system
Chronic Disease
Chronic heart failure
Exercise
Exercise - physiology
Exercise Test
Heart
Heart Failure - physiopathology
Heart failure, cardiogenic pulmonary edema, cardiac enlargement
Humans
Medical sciences
Middle Aged
Posture
Posture - physiology
Pulmonary Gas Exchange
Random Allocation
Respiration
Space life sciences
Supine Position
Ventilation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Objective: Patients with heart failure frequently complain of orthopnoea. The objective was to assess the ventilatory response of patients with chronic heart failure during erect and supine exercise. Design: Maximal incremental exercise testing with metabolic gas exchange measurements in erect and supine positions conducted in random order. Setting: Tertiary referral centre for cardiology. Patients: Nine patients with heart failure (aged 61.9±6.1 years) and 10 age matched controls (63.8±4.6). Outcome measures: Metabolic gas exchange measurements. The slope of the relation between ventilation and carbon dioxide production. Ratings of perceived breathlessness during exercise. Results: Oxygen consumption ( V ̇ O 2 ) and ventilation were higher during erect exercise at each stage in each group. Peak V O 2 was [mean (SD)] 17.12 ml/kg/min (4.07) erect vs 12.92 (3.61) supine in the patients ( P
ISSN:0167-5273
1874-1754
DOI:10.1016/S0167-5273(98)00193-4