Successful weaning is less likely when a patient's work of breathing exceeds what level?

a. 4 J/min
b. 8 J/min
c. 12 J/min
d. 16 J/min

ANS: D
Successful weaning has been found to be less likely among patients with spontaneous work levels greater than 1.6 kg/m/min (16 J/min) or 0.14 kg/m/L (1.4 J/L).

Health Professions

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