A patient has heart failure with pulmonary edema.

Comprehensive and Detailed Explanation From Exact Extract:

Contraindications to CPAP(Continuous Positive Airway Pressure) include:

Hypotension: CPAP can reduce preload and worsen shock (BP < 90 systolic is a contraindication)

Respiratory rate too low: A rate of 10 is at the low threshold; CPAP requires spontaneous adequate effort

Active vomiting or nausea: CPAP increases aspiration risk

Crackles and hypoxia areindications, not contraindications, for CPAP. Pulse rate does not influence CPAP use directly.