Which of the following values would be associated with impending ventilatory failure in a patient with myasthenia gravis?
1. NIF –15cm H2O
2. VC 10 mL/kg
3. PaCO2 43 mm Hg
4. pH 7.36
a. 1
b. 1, 2
c. 2, 4
d. 1, 2, 3
B
A VC of 10 mL/kg and an NIF of –15 cm H2O indicate loss of muscle strength and impending ventilatory failure.
Health Professions
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During spontaneous ventilation, the diaphragm and other respiratory muscles create gas flow by raising the pleural, alveolar, and airway pressures.
Answer the following statement true (T) or false (F)
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