Objective: To obtain optimal titration of positive end-expiratory pressure (PEEP) during mechanical ventilation with functional residual capacity and ventilation homogeneity measurements.

were on noninvasive intermittent positive-pressure ventilation (NIPPV) mode. Forty-six (10%) ARF patients were put on NIV for palliative strategy to alleviate dyspnea. Seventy-six ARF patients ...