Association of Dynamometer-based Handgrip Strength with Postoperative Oxygen Requirement in Patients Undergoing General Anesthesia

Handgrip strength was negatively correlated with SpO2 and RR, particularly in the first 120 min postoperatively, implying that weaker handgrip strength corresponds to lower oxygen levels and higher RRs and hence is a good indicator of lung function. This indicates that oxygen supplementation must be continued for at least 120 min postextubation to prevent hypoventilation.