Key result
The magnitude of non-ventilated lung areas strongly correlated with venous admixture (r = 0.875, P<=0.01), indicating atelectasis contributes to impaired gas exchange after cardiac surgery.
Observational (n=11)
Effect estimate: r = 0.875
p-value: p=<= 0.01
Atelectasis in dependent lung areas strongly correlates with impaired gas exchange (venous admixture) in patients after cardiac surgery.
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May prompt atelectasis consideration in post-cardiac surgery hypoxemia management; hypothesis-generating and requires prospective validation before practice change.
Hachenberg et al. (1992) conducted an observational in Impaired respiratory function after coronary artery revascularization surgery (n=11). Non-ventilated lung areas (atelectasis) was evaluated on Correlation between magnitude of non-ventilated areas and venous admixture (QVA/QT) (r = 0.875, p=<= 0.01). The magnitude of non-ventilated lung areas strongly correlated with venous admixture (r = 0.875, P<=0.01), indicating atelectasis contributes to impaired gas exchange after cardiac surgery.
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