During bilevel PAP titration, which setting is sometimes used to treat central sleep apnea events?

During bilevel PAP titration, which setting is sometimes used to treat central sleep apnea events?

• A. IPAP
• B. Rise time
• C. Backup rate
• D. EPAP

Answer: (D)

Expiratory positive airway pressure is sometimes adjusted during bilevel PAP titration to help central sleep apnea events. Raising EPAP increases the baseline airway pressure and end-expiratory lung volume, which can stabilize breathing by reducing fluctuations in ventilatory drive and helping maintain a more stable CO2 level. This stabilization can lessen the occurrence of central apneas in some patients, especially when there is a mixed or Cheyne‑Stokes–type pattern. IPAP targets inspiratory effort and obstructive events, while rise time affects comfort and synchrony, and a backup rate provides breaths when the user isn’t initiating them. In certain cases, adjusting EPAP offers a way to dampen central events by influencing the breathing pattern through changes in mean airway pressure.

Expiratory positive airway pressure is sometimes adjusted during bilevel PAP titration to help central sleep apnea events. Raising EPAP increases the baseline airway pressure and end-expiratory lung volume, which can stabilize breathing by reducing fluctuations in ventilatory drive and helping maintain a more stable CO2 level. This stabilization can lessen the occurrence of central apneas in some patients, especially when there is a mixed or Cheyne‑Stokes–type pattern. IPAP targets inspiratory effort and obstructive events, while rise time affects comfort and synchrony, and a backup rate provides breaths when the user isn’t initiating them. In certain cases, adjusting EPAP offers a way to dampen central events by influencing the breathing pattern through changes in mean airway pressure.