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The effects of FNAN on lung function parameters in CHD patients. A, MVV, minute ventilation; B, PaO2, partial pressure of oxygen; C, PaCO2, partial pressure of arterial carbon dioxide; D, SpO2, oxygen saturation measurement by pulse oximetry; E, FEV1, forced expiratory volume in 1 second; F, FEV1/FVC (forced vital capacity). ∗P < .05 vs the CG group.
