Postoperative reductions in PEF and FVC values as the percentage of preoperative values in patients with (RNMB-present) and without (RNMB-absent) RNMB. The postoperative PEF and FVC reductions were greater in RNMB-present patients than RNMB-absent patients. *P = 0.008, ^$P = 0.001. PEF = peak expiratory flow; FVC = forced vital capacity; RNMB = residual neuromuscular blockade.