Evolution of risk factors influencing early mortality of the arterial switch operation
Elizabeth D. Blume, MD*  ,
Karen Altmann, MD*  ,
John E. Mayer, MD, FACC ,
Steven D. Colan, MD, FACC* ,
Kimberlee Gauvreau, ScD* and
Tal Geva, MD, AFACC*
* Department of Cardiology, Children’s Hospital, Boston, Massachusetts, USA
Department of Cardiac Surgery, Children’s Hospital, Boston, Massachusetts, USA
Department of Pediatrics and Department of Surgery, Harvard Medical School, Boston, Massachusetts, USA
Current affiliation: Columbia Presbyterian Medical Center, New York, New York, USA
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Figure 1 Summary of coronary anatomy and mortality rates. Coronary patterns were determined by intraoperative observation and are displayed in this figure from a parasternal short-axis echocardiographic view. The number of early deaths is documented as the upper fraction, with the total number as the lower fraction. The graph shows the distribution of the coronary artery patterns. Ant = anterior; Cx = circumflex; L = left; LAD = left anterior descending artery; LCA = left coronary artery; Post = posterior; R = right; RCA = right coronary artery.
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Figure 2 Early survival after arterial switch operation. This figure shows the Kaplan-Meier survival curve for all patients (n = 223). The upper line shows the survival curve for the "low risk" patients (n = 109), defined as full-term infants with intact ventricular septum and no associated defects operated on in the first 14 days of life. Pts. = patients.
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