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Surgical repair of lesions associated with corrected transposition. Late results.
  1. J Metcalfe,
  2. J Somerville


    Between 1970 and 1980 19 patients aged 13 months to 47 years (mean 16 years) had surgical repair of lesions associated with corrected transposition. Four had had previous palliative surgery. Operations were performed for ventricular septal defects in 17 (multiple in two), and in addition 10 had relief of pulmonary stenosis, three had atrial septal defects closed, and three had valve replacement for left atrioventricular valve regurgitation. Two patients had annuloplasty for isolated left atrioventricular valve regurgitation. There was a high operative mortality (37%). Twelve survivors left hospital and were followed up for three to eight years. There is concern about the high incidence of left atrioventricular valve regurgitation and progressive postoperative left sided ventricular dysfunction. Heart block after surgical intervention contributes to this, and careful pacemaker policies are necessary as two late deaths were related to this. Only one patient is asymptomatic and without complications 40 months after operation. These disappointing late results are partly related to the onset of heart block, but it seems that independent systemic ventricular function may deteriorate in some patients. Thus surgical treatment of lesions associated with corrected transposition should be recommended only in those with important symptoms or signs of changing systemic ventricular dysfunction.

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