Chest
Volume 91, Issue 6, June 1987, Pages 859-864
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Clinical Investigations
Mouth Intermittent Positive Pressure Ventilation in the Management of Postpolio Respiratory Insufficiency

https://doi.org/10.1378/chest.91.6.859Get rights and content

The use of mouth intermittent positive pressure ventilation alone or in combination with other noninvasive respiratory techniques as an alternative to tracheostomy in the home management of respirator-dependent postpolio persons was studied in 75 patients. The onset of polio was at an average age of 15 years. At that time, all were dependent on some form of respiratory assistance, most frequently, the iron lung. Fifty-nine percent of them remained respirator-dependent from the onset. Forty-one percent became respirator-dependent at an average of 18 years after onset of polio. Overall, they lost an average of 1.9 percent of vital capacity per year. All used mouth intermittent positive pressure ventilation as their predominant mode of respiratory assistance for an average of 14.5 years. Four of them who had no measurable vital capacity used only mouth intermittent positive pressure ventilation 24 hours per day. Of the 66 who had no significant tolerance off 24 hours per day respiratory assistance, only six had tracheostomies. Despite severe physical disability and dependence on artificial ventilation, the majority of these persons have married, have been gainfully employed, and lead useful lives in society.

Section snippets

METHOD

Seventy-five postpolio persons on MIPPV were studied. Seventy were managed in the home, five in chronic care institutions. Eight had complete quadriplegia, while 67 had varying degrees of quadriparesis. None had severe bulbar involvement. All were wheelchair dependent. The majority were mobile only in motorized wheelchairs. Twenty-seven had significant scoliosis. Sixty-six were ventilator dependent 24 hours a day and could tolerate only seconds of time free of assisted ventilation unless

RESULTS

Seventy-five respirator dependent postpolio persons were separated into three categories as a function of the amount and method of respiratory assistance. Table 1 represents those persons with no tolerance off mechanical aid who used only MIPPV 24 hours per day. Twenty-three of these persons had been dependent on aid since the onset of polio. Twenty returned to at least overnight respiratory aid an average of 18.1 years (one to 37) postpolio and subsequently progressed to full-time respirator

DISCUSSION

Respiratory insufficiency in the majority of postpolio patients is due primarily to respiratory muscle weakness. Most of our patients requiring full time aid have VCs below 1 L. In others requiring full time aid, VCs as high as 1,700 ml have been noted. These patients may have intrinsic lung disease, central hypoventilation, or a pattern of upper airway collapse and sleep apnea episodes as well as thoracic deformity. Symptoms of hypoventilation are insidious in onset but lead to cor pulmonale

ACKNOWLEDGMENTS

The authors wish to thank Marie Schultheiss, B.A.C. C.P.T., Craig Senna, C.R.T.T., Enrique Gonzalez, C.R.T.T., and Joan Adler, M.A., for their technical assistance. We also wish to thank Ms. Diane Perlman for her help in preparing this paper.

REFERENCES (20)

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Manuscript received July 25; revision accepted October 30.

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