Chest
Clinical InvestigationsSurveys of Long-term Ventilatory Support in Minnesota: 1986 and 1992
Section snippets
METHODS
For the purposes of this study, a VAI was defined as an individual outside an acute-care hospital ICU setting who was receiving ventilatory support for at least 6 h/d for a duration of at least 30 days. The type of ventilatory support included primarily positive pressure ventilators, but in a small number of patients (eight patients in 1992), ventilatory support was provided by negative pressure devices (tank respirators, cuirasses, ponchos) or by pneumobelts. Individuals receiving nasal
RESULTS
In 1986, we identified 103 individuals receiving long-term ventilatory support. By 1992, we identified 216, a 110 percent increase in the number of VAIs in Minnesota (Fig 1). During that time, the prevalence in the general population of patients receiving long-term ventilatory support in Minnesota increased from 2.4/100,000 to 4.9/100,000. The number of VAIs increased in both long-term care units and in the home (Table 2). However, the percentage of patients cared for in a long-term care
DISCUSSION
Our study, using almost identical survey methods in each year, found that the number of VAIs in Minnesota increased by 110 percent from 1986 to 1992. Assuming a similar distribution of VAIs across the US population, extrapolation of our findings in Minnesota to the US population as a whole predicts that the number of VAIs in the United States increased from 5,777 in 1986 to 12,279 in 1992. This assumption, however, may not be valid as utilization of this technology probably varies in different
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Supported by the Ramsey Foundation.
Manuscript received June 15; revision accepted September 16.