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Fig. 4 | COPD Research and Practice

Fig. 4

From: Lung hyperinflation in COPD: applying physiology to clinical practice

Fig. 4

The negative consequences of dynamic hyperinflation during an acute exacerbation of COPD. Dynamic hyperinflation develops as a consequence of worsening expiratory flow limitation. Abbrevations: EELV, end-expiratory lung volume; IC, inspiratory capacity; PaO2, arterial oxygen tension; PaCO2, arterial carbon dioxide tension; PEEPi, intrinsic positive end-expiratory pressure; CLdyn, dynamic lung compliance; H+, hydrogen ion concentration; LV, left ventricular RV, right ventricular; VD/VT, physiological dead space; V/Q, ventilation/perfusion; VT, tidal volume

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