CPAP improves LV afterload by preventing upper airway collapse
- related: continuous positive airway pressure CPAP
- tags: #permanent
- patients with OSA have occluded airway with inspiration
- this leads to more negative intrathoracic pressure, essentially creating more vacuum
- negative intrathoracic pressure leads to higher transmural pressure in the heart, increase LV afterload
- CPAP keeps airway open during inspiration and decreases LV afterload.1
Links to this note
- Murray and Nadel Ch 122 Sleep Disordered Breathing Treatment
- continuous positive airway pressure CPAP
- CPAP, Bipap, and ASV are main treatment for central sleep apnea