Related Experiment Video
Updated: May 4, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Revisiting the Baffes operation: its role in transposition of the great arteries
Constantine Mavroudis1, Carl L Backer2, Allison Siegel1
1Johns Hopkins Children's Heart Surgery, Florida Hospital for Children, Orlando, Florida.
Abstract:
Thomas Baffes developed one of the first operations for transposition of the great arteries directing inferior vena cava flow to the left atrium using an interposed homograft in the era before open heart surgery. He performed 117 Baffes operations from 1953 to 1960, with 30% overall mortality, and an additional 85 Baffes procedures before 1968, allowing many to survive until the atrial baffle operations. During the early days before hospitals had cardiopulmonary bypass machines, Tom Baffes and colleagues purchased a heart-lung machine and transported it to various Chicago hospitals to treat patients and stimulate interest in this emerging technology.
Related Concept Videos
Aortic Regurgitation I: Introduction
Mitral Regurgitation I: Introduction
Heart Valves
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Mitral Stenosis I: Introduction
Fetal Circulation
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...

