A Brazilian study found that significant interdialytic weight gain in patients on hemodialysis (HD) is associated with obstructive sleep apnea (OSA), reports Renal and Urology News.

In a study of 55 HD patients (49% male) with low cardiovascular risk, Rebeca R. Harmon, MD, of the University of São Paulo Medical School Hospital, and colleagues found that patients with OSA had a significantly greater proportion of those with an interdialytic weight gain of more than 2 kg than those without OSA (96% vs 55%), according to a report published online ahead of print in Sleep and Breathing.

In addition, patients with OSA had significantly greater left ventricular (LV) posterior wall thickness (11.3 vs 10.0 mm) and LV diastolic diameter (53 vs 48 mm) compared with those who did not have OSA.