Optimal flow pattern for mechanical ventilation of the lungs 2. The effect of a sine versus square wave flow pattern with and without an end-inspiratory pause on patients
- 1 September 1978
- journal article
- clinical trial
- Published by Wolters Kluwer Health in Critical Care Medicine
- Vol. 6 (5) , 293-310
- https://doi.org/10.1097/00003246-197809000-00001
Abstract
In four series of patients, the efficiency of ventilation of a sine wave without an end-inspiratory pause was compared to a square wave without a pause, a sine wave with a pause to a square wave with a pause, a sine wave to a sine wave with a pause, and a sine wave with a long pause to one with a short pause. The primary mode of evaluation was through simultaneous airway and arterial argon washout curves. Additional cardiopulmonary measurements were made. Results indicate: (1) a statistically significant improvement in ventilation with a sine wave with a pause; (2) a statistically significant improvement with the longer pause as compared to the short pause.Keywords
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