Key result
Respiratory sinus arrhythmia was significantly associated with improved CO2 (partial r = -0.53, P=0.002) and O2 (partial r = -0.49, P=0.005) exchange efficiency in healthy volunteers.
Why the study?
Is respiratory sinus arrhythmia associated with improved efficiency of pulmonary gas exchange in healthy humans?
Population
10 healthy human volunteers
Design
Cross-sectional
Authors
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Supports V/Q matching theory via RSA; hypothesis-generating and should not yet change practice.
Cross-Sectional (n=10)
Is respiratory sinus arrhythmia associated with improved efficiency of pulmonary gas exchange in healthy humans?
Effect estimate: partial r = -0.53 (CO2), partial r = -0.49 (O2)
p-value: p=0.002 (CO2), 0.005 (O2)
Respiratory sinus arrhythmia is associated with improved efficiency of pulmonary gas exchange in healthy humans, supporting the theory that it matches ventilation to perfusion.
Giardino et al. (2003) conducted a cross-sectional in Healthy (n=10). Paced breathing was evaluated on Pulmonary gas exchange efficiency (average ventilatory equivalent of CO2 and O2) (partial r = -0.53 (CO2), partial r = -0.49 (O2), p=0.002 (CO2), 0.005 (O2)). Respiratory sinus arrhythmia was significantly associated with improved CO2 (partial r = -0.53, P=0.002) and O2 (partial r = -0.49, P=0.005) exchange efficiency in healthy volunteers.
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