Answer
Nov 01, 2025 - 01:06 PM
The "4 hour rule" for CPAP refers to the guideline that using a CPAP machine for at least 4 hours per night is considered the minimum amount for effective therapy in treating sleep apnea. Many insurance companies and healthcare providers use this benchmark to determine compliance and continued coverage of CPAP equipment. Regular use beyond 4 hours is encouraged for optimal health benefits.
