Which of the following is (are) precipitating factor(s) that can decrease the patient's ability to generate a negative intrapleural pressure?
1. Supine position
2. Large tidal volume on the mechanical ventilator
3. Malnutrition
4. Obesity
a. 4
b. 1, 3, 4
c. 1, 2, 3
d. 1, 2, 3, 4
B
A small tidal volume on the mechanical ventilator and all of the other listed options can decrease a patient's ability to generate a negative intrapleural pressure.
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