Which of the following intermittent positive-pressure breathing machines is unable to provide short-term ventilatory support?
a. Bird Mark 7 c. Puritan Bennett AP-4
b. Bird Mark 14 d. Puritan Bennett PR-2
ANS: C
The Puritan Bennett AP-4 is only patient-triggered, so it can be used for intermittent posi-tive-pressure breathing therapy but not for providing short-term ventilatory support of patients with apnea. The other ventilators mentioned are able to support patients for short-term mechani-cal ventilation.
Health Professions
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