Ramp

The ramp function increases the pressure gradually until the machine reaches the prescribed pressure. This is a common feature on most CPAP machines. Some users find this gradual increase to the prescribed pressure more comfortable. The ramp time is usually measured in 5-minute intervals and typically ranges between 5 and 45 minutes to reach the prescribed pressure setting.

Example: Ramp Starting point: 4cm H2O. Ramp Time: 20 Minutes. Prescribed pressure: 10cm H2O. This means the CPAP machine would start at 4cm H2O and over the next 20 minutes gradually increase the pressure to 10cm H2O.