The diagnosis of alteration in gas exchange related to body position requires a deliberate evaluation of PaO2 responses. Body positions that improve V/Q matching and thus PaO2 need to be specified in patient care plans; individualized interventions are more useful than generic care plans that state, "turn q 2 h." Additionally, standard rotations for patients treated on mechanically rotating beds could be individualized according to gas exchange responses to the position changes. Routine documentation of patient body positions next to arterial blood gas results on flow sheets could prove valuable in the evaluation and treatment of hypoxemia in patients with pulmonary problems.

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