Alternatively, the supplement of the OED, 1982, suggests ...

Lung function tests measure how much air you can breathe in and out, how fast you can breathe air out, and how well your lungs deliver oxygen to your blood. These tests can help detect a lung disease that may be causing PH. Polysomnogram (PSG). This test records brain activity, eye movements, heart rate, and blood pressure while you sleep. ................
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