User:Rakeshmmc/sandbox

Adaptive servo ventilation (ASV) is a type of non invasive positive pressure ventilation. It provides two different levels of pressure during inspiratory (IPAP) and expiratory (EPAP) phases of respiration. It can also adjust both of these pressures based on the changes in patients’ upper airway obstruction (useful in obstructive sleep apnea (OSA) patients) and respiratory effort. It can also provide back up respiratory rate (useful in central sleep apnea (CSA) patients). It is used in patients with central sleep apnea, treatment emergent central sleep apnea, and mixed sleep apnea (both OSA and CSA),. It’s is not recommended for patients with heart failure with low ejection fraction (ejection fraction (EF) less than 45%), due to lack of evidence as well as potentially increased risk of harm.