Extract Obstructed breathing during sleep, whether present as an isolated disorder (obstructive sleep apnoea (OSA)) or accompanied by hypoventilation in the obese (obesity hypoventilation syndrome (OHS)/OSA), is associated with significant cardiovascular morbidity and mortality. Pulmonary hypertension (PH) is prevalent in both disorders and is present in approximately 30% of patients with OSA [1 - 3], and in more than 50% in those with OHS [4]. However, the prevalence of PH has yet to be determined using right heart catheterisation after rigorously excluding concomitant cardiovascular and respiratory diseases that could affect haemodynamics.
Extract Obstructed breathing during sleep, whether present as an isolated disorder (obstructive sleep apnoea (OSA)) or accompanied by hypoventilation in the obese (obesity hypoventilation syndrome (OHS)/OSA), is associated with significant cardiovascular morbidity and mortality. Pulmonary hypertension (PH) is prevalent in both disorders and is present in approximately 30% of patients with OSA [1 - 3], and in more than 50% in those with OHS [4]. However, the prevalence of PH has yet to be determined using right heart catheterisation after rigorously excluding concomitant cardiovascular and respiratory diseases that could affect haemodynamics.