Prolongation of the QRS duration is associated with clinical severity in patients with IPAH. In addition, QRS prolongation has an independent association with cardiopulmonary mortality and could be a new predictor of adverse outcome in patients with IPAH.
Department of Cardio-Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507, Zhengmin Rd, Shanghai 200433, China.
Chest. 2012 Feb;141(2):374-80
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