pressure controlled inverse ratio ventilation

pres·sure con·trolled in·verse ra·ti·o ven·til·a·tion

(PCIRV) (presh'ŭr kŏn-trōld' in'vĕrs rā'shē-ō ven'ti-lā'shŭn)
Mode of positive pressure ventilation used in patients with more severe respiratory disorders (e.g., adult respiratory syndrome) in which pressure is continuously adjusted downward as lung-compliance and gas exchange improve during inspiration.
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