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Studies also shows that yogic type of breathing exercises reduces the dead space ventilation & renews air throughout the lungs.
Conclusions and Clinical Relevance--Differences in tidal volume with similar minute ventilation suggested that red-tailed hawks in dorsal recumbency might have lower dead space ventilation. Despite similar minute ventilation in both positions, birds in dorsal recumbency hypoventilated more, yet maintained higher [Pao.sub.2], which suggests parabronchial ventilatory or pulmonary blood flow distribution changes with position.
A decrease in cardiac output, an increase in dead space ventilation and major ventilation-perfusion mismatch result in systemic arterial desaturation.