Which of the following components are unnecessary to have on a transport ventilator for use during prehospital care? I. variable Fio2 II. a variety of modes III. manual inhalation control IV. independent control knobs for Vt and f
A. I, II only
B. II, III only
C. I, III, IV only
D. I, II, III, IV
ANS: A
A. Correct response: Transport ventilators used in prehospital care do not need (1) a variable Fio2, and (2) CPAP or a variety of ventilatory modes. Some studies have demonstrated that 95% of patients receiving prehospital ventilation during transport were apneic. Having demand flow valves adds size and weight to the ventilator, and can also increase gas consumption. Independent control knobs for Vt and respiratory rate should be available. Another important feature is the "manual inhalation" control, which is useful during auscultation of breath sounds to confirm proper ETT placement.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
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