Acute haemodynamic effects of continuous positive airway pressure in awake patients with heart failure

Abstract

These results contribute to the evidence that CPAP does not cause haemodynamic compromise in the vast majority of normotensive CHF patients with SDB.

Year in review 2014: Interstitial lung disease, physiology, sleep and ventilation, acute respiratory distress syndrome, cystic fibrosis, bronchiectasis and rare lung disease

“…However, reports of the acute haemodynamic effects of CPAP in this population have been contradictory. Schroll and colleagues tested the effects of incremental CPAP on blood pressure, heart rate and cardiac output in 37 stable normotensive CHF patients, most of whom had predominantly central apnoea. CPAP up to 10 cmH 2 O was well tolerated and produced only small and clinically insignificant changes in haemodynamics in the vast majority of individuals.…”

A Paradigm Shift in the Treatment of Central Sleep Apnea in Heart Failure

“…In a study of patients with LVEF , 40% and New York Heart Association class II-III HF, however, hemodynamics were not appreciably altered with incremental CPAP increases from 0 to 10 cm H 2 O. 18 Reduced preload might also result in reduction of atrial natriuretic peptide, leading to reduction of water and sodium excretion, potentially worsening HF. Increased ventilation due to pressure support from ASV might worsen respiratory alkalosis, with a consequent increase in potassium excretion, thus predisposing to fatal arrhythmia.…”

Comparison of the effects of continuous and intermittent non invasive mechanical ventilation on cardiorespiratory parameters and autonomic modulation of healthy individuals

“…9 Ambas as técnicas possuem benefícios semelhantes e têm se mostrado efetivas em diversas condições terapêu-ticas. 10,11,12 Em geral essas modalidades se diferem quanto ao fornecimento de pressão gerada por cada componente, para RPPI utiliza-se 10 a 30 cm/ H 2 O 12,13 e para CPAP pode variar de 4 a 10 cm/ H 2 O 8,9,14,15 , entretanto, estudos recentes mostrando os efeitos benéficos de níveis maiores de CPAP 16,17 e de RPPI 1 são descritos na literatura.…”