Letter Regarding Article by Arias et al, “Obstructive Sleep Apnea Syndrome Affects Left Ventricular Diastolic Function: Effects of Nasal Continuous Positive Airway Pressure in Men”
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To the Editor:
I read with great interest the article by Arias et al1 regarding effects of continuous positive airway pressure (CPAP) on diastolic function in patients with obstructive sleep apnea. Their study was meticulously done, and I applaud their effort in carrying out this project. Although they state that their data show an improvement in diastolic function after 12 weeks of CPAP, there are other possible interpretations to be considered. The group in whom changes in diastolic parameters were noted was older, with higher body mass index, blood pressure, and left ventricular mass. The vast majority had a pattern of impaired relaxation. Although there were statistically significant …