Cardiorespiratory interaction with continuous positive airway pressure.

Area of Science:

• Cardiorespiratory physiology
• Sleep medicine
• Cardiovascular health

Background:

• Obstructive sleep apnoea (OSA) is commonly treated with continuous positive airway pressure (CPAP) therapy.
• CPAP's clinical applications yield variable outcomes.
• Beyond upper airway effects, CPAP influences intrathoracic pressures, hemodynamics, and blood pressure (BP).

Purpose of the Study:

• To review the physiological impact of CPAP on the cardiorespiratory system.
• To elucidate short-term benefits and long-term outcomes of CPAP therapy.
• To discuss factors influencing CPAP efficacy and patient experience.

Main Methods:

• Literature review of studies on CPAP's physiological effects.
• Analysis of impacts on cardiorespiratory parameters.
• Synthesis of data on short- and long-term outcomes.

Main Results:

• CPAP affects hemodynamics and BP control.
• Short- and long-term effects are contingent on variables like symptoms, condition, pressure, acceptance, compliance, and usage.
• CPAP can modify long-term cardiovascular risk in patients with cardiorespiratory conditions.

Conclusions:

• CPAP exerts significant physiological effects on the cardiorespiratory system.
• Understanding these effects is crucial for optimizing OSA management and patient outcomes.
• The difference in CPAP's impact during sleep versus wakefulness may affect adherence.