: the act or practice of placing a patient and especially one in respiratory distress in the prone (see prone entry 1 sense 2a) position with the chest and stomach facing downward to increase blood oxygenation
During the chaotic days of March and April, emergency room doctors were quick to intubate patients with dangerously low oxygen levels. They subsequently discovered other ways to improve outcomes, including placing patients on their stomachs, a protocol known as proning that helps improve lung function.—Andrew Jacobs … doctors and nurses also have more experience handling coronavirus patients than they did months earlier in the pandemic, with techniques like proning and better therapeutics at the ready for severe hospitalized cases.—Michael McGough
present participle of prone entry 2
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