The effect of pressure support ventilation on breathing patterns and the work of breathing

H. Tokioka, S. Saito, T. Niguma, M. Kinjo, M. Matsumi, F. Kosaka

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Abstract

We assessed breathing patterns during pressure support ventilation (PSV) and its relationship with the work of breathing in 10 postoperative patients. With increasing levels of pressure support, minute ventilation and tidal volume increased with a decrease in respiratory frequency. Increased minute ventilation was achieved by increased mean inspiratory flow. Duty cycle, however, decreased with PSV. This decrease might allow the diaphragm a longer rest period between contractions, which might decrease the risk of diaphragmatic fatigue. Furthermore, PSV reduced the inspiratory work added by a ventilator to near zero. Oxygen consumption was also decreased with PSV. We conclude that PSV improved the breathing patterns and minimized the work of breathing spontaneously via a ventilator.

Original languageEnglish
Pages (from-to)269-272
Number of pages4
JournalRespiration and Circulation
Volume38
Issue number3
Publication statusPublished - Mar 1 1990

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine

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    Tokioka, H., Saito, S., Niguma, T., Kinjo, M., Matsumi, M., & Kosaka, F. (1990). The effect of pressure support ventilation on breathing patterns and the work of breathing. Respiration and Circulation, 38(3), 269-272.