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Clinical Indicators of Impaired Gas Exchange in Cardiac Postoperative Patients.

PURPOSE
To analyze the accuracy of the defining characteristics of impaired gas exchange (IGE).


METHODS
Cross-sectional study carried out in 93 cardiac postoperative adult patients. The 19 NANDA-I defining characteristics related to IGE were evaluated.


FINDINGS
Ten defining characteristics were found in the sample. The best accuracy values, including specificity, diagnostic odds ratio, and likelihood ratios, inter alia, were found to decreased carbon dioxide, abnormal arterial blood gases, abnormal arterial pH, and abnormal breathing.


CONCLUSION
Some clinical indicators predict the presence/absence of IGE more accurately than others.


IMPLICATIONS FOR NURSING PRACTICE
Knowledge of the accuracy of defining characteristics allows an early identification of particular nursing diagnoses, which can prevent complications.