Which of the following factors are predictors of success of NPPV? I. intact neurologic function II. APACHE II score greater than 30 III. pH of 7.25 or less IV. intact dentition
A. I, IV only
B. II, III only
C. I, II, III only
D. II, III, IV only
ANS: A (page 371)
Cognitive Level: Recall
A. Correct response: Selection of appropriate patients for NPPV is critical for optimizing success rates and deriving benefits. The following factors are predictors of success of NPPV used for the treatment of acute respiratory failure:
• ? Cooperative patient
• ? Intact neurologic function
• ? Synchrony with the ventilator
• ? APACHE II score <29
• ? pH >7.25
• ? Intact dentition
• ? Well-controlled air leaking
• ? Able to control secretions
• ? Within first 2 hours of using NPPV
• o Reduced respiratory rate (>30 breaths/min)
• o Reduced accessory muscle use
• o Improved gas exchange (increasing Pao2/Fio2 )
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.
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