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The Gerbode Defect: Left Ventricular to Right Atrial Communication—Anatomic, Hemodynamic, and Echocardiographic Features

Left ventricular to right atrial (LV–RA) communications were first described in the 19th century by Thurman.1 It was not until 1958, however, that interest in this lesion was renewed following the publication by Gerbode et al.2 of a series of five patients who underwent successful surgical repair. We present herein a case of an acquired Gerbode defect discovered in a young female during pregnancy. A 30-year-old asymptomatic female was referred to our hospital’s cardiology clinic for evaluation of a murmur discovered by her obstetrician in her 18th week of an otherwise uncomplicated pregnancy. At the age of 17, the patient underwent operative repair of a perimembranous ventricular septal defect (VSD). She remained asymptomatic postoperatively and did not seek medical attention until she became pregnant. On examination, there was wide splitting of the second heart sound and a grade 3/6 systolic murmur which was best heard along the left sternal border. A 12-lead electrocardiogram demonstrated normal sinus rhythm at 75 beats per minute with an incomplete right bundle branch block.