Institute of Pulmocare and Research, Kolkata
Online published on 4 June, 2012.
OSA has been increasingly implicated in the initiation and progression of cardiovascular diseases. We attempted to find the association of LVDD with OSA in terms of its frequency as well as in terms of several important parameters.
It was a retrospective study where 32 OSA patients diagnosed by polysomnography who also underwent echocardiography were looked for the presence of LVDD. The patients were divided into two groups based on the presence or absence of LVDD and compared them according to different parameters.
The overall prevalence of LVDD in our OSA patients has been found to be 46.8%. There has been found to be no significant differences as per the different parameters considered. On the contrary, severity of sleep apnea was found to be higher in the non LVDD group tallying to their higher BMI, higher neck and waist circumference.
It has not been possible to associate severity of OSA with risk or prevalence of LVDD as there has been found to be no difference between the two groups, with and without LVDD. This area needs further probing so as to look into the origin of LVDD in certain OSA sufferers.
OSA (Obstructive Sleep Apnea), LVDD (Left Ventricular Diastolic Dysfunction), CPAP (Continuous Positive Airway Pressure), COPD (Chronic Obstructive Pulmonary Disease), ESS (Epworth Sleepiness Score)
