A Mechanical Intermittent Abdominal Pressure Ventilator

John R. Bach, Mark Radbourne, Nikhil Potpally, Michael Chiou

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Pneumatically driven intermittent abdominal pressure ventilators were a popular means of daytime ventilatory support until the late 1960s paradigm shift to invasive (tracheostomy) mechanical ventilation. However, although many patients still use intermittent abdominal pressure ventilators, currently available turbine-driven portable home care ventilators are not powerful enough to always successfully operate them. We describe a new mechanically driven intermittent abdominal pressure ventilator operated by a 1-pound motor that provided a depth of abdominal compression of almost 2 in in 1.05 to 1.13 secs to normalize alveolar ventilation for a 72-yr-old postpolio survivor. It increased her autonomous 200- to 320-ml tidal volumes by greater than 300 ml to normalize her respiratory rate, relieve her dyspnea, and maintain normal oxyhemoglobin saturation levels throughout daytime hours for a 9-mo period of continuous ventilatory support.

Original languageEnglish (US)
Pages (from-to)e144-e146
JournalAmerican journal of physical medicine & rehabilitation
Issue number12
StatePublished - Dec 1 2019

All Science Journal Classification (ASJC) codes

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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