Septation of the single ventricle: revisited.
BACKGROUND
Septation of a single ventricle into 2 functioning ventricles can provide an alternative to the Fontan operation. However, early experiences with septation reported unacceptable morbidity and mortality. The present study selected only those patients with large volume-overloaded hearts, 2 well-functioning atrioventricular valves, and an absence of severe outlet obstruction. Early and intermediate outcomes are evaluated.


RESULTS
Between June 1990 and March 1999, 11 patients underwent septation in 1 or 2 stages. Diagnoses of the patients included double-inlet left ventricle in 9, double-inlet right ventricle in 1 patient, and indeterminate ventricle in 1 patient. Five had l-transposition and 3 had d-transposition of the great arteries. Six had septation as 1 stage, 5 as planned 2-stage operations (2/5 completed). The median age for septation in 1 stage was 2.1 years (range 4 months to 5.8 years); for 2 stages, the median age was 7.2 months (range 3 to 14 months). Median follow-up time was 2.3 years. Eight of 11 patients survived (73%), with 2 early deaths and 1 late death. Seven of the 8 survivors have undergone complete septation (5 as single stage, 2 as 2 stages). Complications included surgically induced complete atrioventricular block in 1 patient and significant residual ventricular septal defects in another. Qualitatively, left ventricular function by echocardiography is normal in all patients, whereas right ventricular function is mildly decreased in 1 patient. All patients are clinically well.


CONCLUSIONS
The septation procedure for single ventricle hearts may be a reasonable alternative to the Fontan operation in selected patients.
Margossian
Renee E
RE
New York Presbyterian Hospital-Columbia University, the Divisions of Pediatric Cardiology, New York, NY , USA. reneem@cardio.tch.harvard.edu
Solowiejczyk
David
D
Bourlon
Francois
F
Apfel
Howard
H
Gersony
Welton M
WM
Hordof
Allan J
AJ
Quaegebeur
Jan
J
D002648:Child; D002669:Child Welfare; D002675:Child, Preschool; D005500:Follow-Up Studies; D018729:Fontan Procedure; D006345:Heart Septal Defects, Ventricular / Q000150:complications / Q000401:mortality / Q000601:surgery*; D006352:Heart Ventricles / Q000002:abnormalities / Q000601:surgery*; D006801:Humans; D007223:Infant; D007229:Infant Welfare; D007902:Length of Stay; D008984:Monaco; D009518:New York; D019990:Perioperative Care; D011183:Postoperative Complications / Q000209:etiology / Q000401:mortality; D016019:Survival Analysis; D016896:Treatment Outcome; D016277:Ventricular Function, Left / Q000502:physiology