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A Mechanical Intermittent Abdominal Pressure Ventilator

Bach, John R. MD; Radbourne, Mark; Potpally, Nikhil BA; Chiou, Michael MD

American Journal of Physical Medicine & Rehabilitation: December 2019 - Volume 98 - Issue 12 - p e144–e146
doi: 10.1097/PHM.0000000000001151
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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.

From the Department of Physical Medicine and Rehabilitation, Rutgers New Jersey Medical School, Newark, New Jersey (JRB, NP); Minneapolis, Minnesota (MR); and Department of Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai, New York, New York (MC).

All correspondence should be addressed to: John R. Bach, MD, Department of Physical Medicine and Rehabilitation, Behavioral Health Sciences Bldg, F1559, 183 S Orange Ave, Newark, NJ 07103.

MR conceived and developed the mechanical intermittent abdominal pressure ventilator reported in this article without any external support.

Nikhil Potpally and Michael Chiou are in training.

Financial disclosure statements have been obtained, and no conflicts of interest have been reported by the authors or by any individuals in control of the content of this article.

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal’s Web site (www.ajpmr.com).

Online date: February 6, 2019

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