Unger P, Stoupel E, Vachiery J L, De Backer D
Cardiology Department, Erasme Hospital, Brussels, Belgium.
Intensive Care Med. 1996 Dec;22(12):1410-1. doi: 10.1007/BF01709560.
A patient presenting primary pulmonary hypertension and absent right superior vena cava underwent blade/balloon atrial septostomy as palliative therapy. Due to the anomaly of the venous drainage system, only transesophageal echocardiography allowed the performance of the maneuvre.