Aortobrachial bypass for acute vascular insufficiency due to tumor embolization.
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Aorta↗
Biomedical subjects
Hong Gook Lim
Publications and source records attributed to Hong Gook Lim.
Improving results of the Fontan procedure in patients with heterotaxy syndrome.
BACKGROUND: The Fontan operation in patients with heterotaxy syndrome has been associated with a poor prognosis. We studied whether the outcome of those patients with heterotaxy syndrome improved compared with those who did not have the syndrome after an extracardiac Fontan operation. METHODS: A retrospective review was performed on 185 patients who had undergone an extracardiac Fontan operation between 1996 and 2005. RESULTS: Sixty-two of the patients had heterotaxy syndrome (33.5%). Forty-one had right isomerism and 21 had left isomerism. Heterotaxy syndrome was commonly associated with a morphologic right ventricle (59.7%), a common atrioventricular valve (72.6%), an interrupted inferior vena cava (25.8%), a separate hepatic vein (30.6%), and extracardiac pulmonary venous drainage (16.1%). The hospital mortality rate was higher in the heterotaxy syndrome than nonheterotaxy (4.8% vs 2.4%; p = 0.05). Eight-year survivals were 91.9 +/- 3.2% in the nonheterotaxy group and 89.3 +/- 4.2 % in the heterotaxy group (p = 0.39). At 8 years, freedom from reoperation was 90.2 +/- 3.2% in the nonheterotaxy group and 78.5 +/- 6.2% in the heterotaxy group (p = 0.15). The outcomes (other than those of arrhythmia) were no different between the two groups. The incidences of early and late postoperative arrhythmia were 29.0% and 25.4%, respectively, in heterotaxy patients, and 15.4% and 10.8% in nonheterotaxy patients (p < 0.05). Bradyarrhythmia was found to be more common. During follow-up, atrioventricular valve regurgitation of more than mild was more common in heterotaxy patients (33.9% vs 18.9%; p = 0.05). CONCLUSIONS: Midterm outcomes after an extracardiac Fontan operation in heterotaxy and nonheterotaxy patients are similar, except arrhythmia and atrioventricular valve regurgitation.
Arrhythmias, Cardiac↗
Alternative Fontan connection for apicocaval juxtaposition.
We present an alternative technique to the modified Fontan procedure used in a 3-year-old boy who had complex heart defects with bilateral superior vena cava and apicocaval juxtaposition. The left superior vena caval pathway was used behind the ventricle to connect the inferior vena cava to the pulmonary artery. We proved the technical feasibility of this with good midterm results at the 5-year follow-up angiography.
Abnormalities, Multiple↗
Pulmonary root translocation for repair of Taussig-Bing anomaly with interrupted arch.
Anterior translocation of the pulmonary root was used as a new approach to the staged repair of Taussig-Bing anomaly with an interrupted aortic arch. It was performed to construct the right ventricle outflow tract with intraventricular baffling of the left ventricle to the aorta as the second stage operation after repair of the interrupted arch and pulmonary artery banding. This technique allows minimization of pulmonary regurgitation and has the major theoretical advantage for growth potential, which could diminish the need for reoperation.
Double Outlet Right Ventricle↗
Fontan conversion with arrhythmia surgery.
OBJECTIVE: Hemodynamic abnormalities and refractory atrial arrhythmias in patients late after the Fontan operation result in significant morbidity and mortality. We reviewed our experience with Fontan conversion and concomitant arrhythmia surgery. METHODS: Between January 1996 and February 2004, 16 patients underwent Fontan conversion and arrhythmia surgery. Mean age at the initial Fontan operation was 5.1+/-3.5 (range: 2-15) years and mean age at Fontan conversion was 17.0+/-5.8 (range: 6-30). The initial Fontan operations were atriopulmonary connections in 14 patients, extracardiac lateral tunnel in 1, and intracardiac lateral tunnel in 1. The types of arrhythmia included atrial flutter in 10 patients and atrial fibrillation in 3. Fontan conversion operation was performed with intracardiac lateral tunnel in 5 patients and extracardiac conduit in 11. Arrhythmia surgery included isthmus cryoablation in 10 patients and right-sided maze in 3. RESULTS: There has been no mortality. At Fontan conversion operation, 7 patients required permanent pacemaker. All patients have improved to New York Heart Association class I or II. With a mean follow-up of 26.9+/-30.6 (range:1-87) months, 16 patients had sinus rhythm, 2 patients had transient atrial flutter which was well controlled, and 2 patients required permanent pacemaker during follow-up. CONCLUSIONS: Fontan conversion with concomitant arrhythmia surgery and permanent pacemaker placement is safe, improves New York Heart Association functional class, and has a low incidence of recurrent arrhythmias. In most patients, concomitant permanent pacemakers are needed.
Adolescent↗
Repair of transposition of the great arteries, ventricular septal defect and left ventricular outflow tract obstruction.
OBJECTIVES: This study was undertaken to compare the outcomes of the Lecompte procedure and Rastelli repair in the transposition of the great arteries (TGA) with ventricular septal defect (VSD) and left ventricular outflow tract obstruction (LVOTO) and to determine the risk factors associated with unfavorable events. METHODS: Over a 12-year period (April 1990-October 2002), 35 patients underwent complete repair for TGA, VSD, and LVOTO. Twenty-five patients (71%) underwent the Lecompte modification, and mean age and weight were 23.4+/-18.2 months and 10.2+/-3.0 kg. Ten patients (29%) underwent the Rastelli operation, and mean age and weight were 39.1+/-36.1 months and 13.8+/-6.8 kg. RESULTS: One early death (3%) occurred after the Lecompte procedure and no late death. The mean follow-up was 5.9+/-3.8 years. Eight patients in the Rastelli group (80%) underwent a late reoperation for obstruction of the extracardiac conduit, and in four of these patients, a reoperation for LVOTO was concomitantly required. Reoperation was also required in six patients of the Lecompte group (25%); five for right ventricular outflow tract obstruction (RVOTO) including one for LVOTO and two for VSD leakage, and one for mitral regurgitation and left pulmonary artery stenosis. The interval prior to reoperation ranged from 1.6 to 11.1 years, with a mean of 5.7+/-3.1 years. The actuarial figures for freedom from reoperation at 5 and 10 years were 40.0+/-15.5 and 26.7+/-15.0% after the Rastelli operation and 95.7+/-4.3 and 63.5+/-12.6% after the Lecompte procedure (P = 0.02). Multivariate analysis by Cox regression analysis revealed that the risk factors of RVOTO were a younger age at operation, the Rastelli operation, and ductus ligation during the operation. CONCLUSIONS: The Lecompte procedure and Rastelli repair provide satisfactory early and late results. However, substantial late morbidity is more associated with conduit obstruction, and LVOTO in Rastelli repair rather than Lecompte procedure.
Abnormalities, Multiple↗
Staged biventricular repair of Taussig-Bing anomaly with subaortic stenosis and coarctation of aorta.
We present successful procedures for 2 infants who had the Taussig-Bing anomaly with subaortic stenosis and coarctation of the aorta. The initial procedure was coarctoplasty and the Damus-Kaye-Stansel procedure with modified Blalock-Taussig shunt. The second procedure was intraventricular repair (Kawashima procedure), Damus-Kaye-Stansel take-down and the reuse of native aortic and pulmonary valves 19 and 25 months later. Both patients survived the operations and postoperative hemodynamics were excellent at both 28 and 59 months follow-ups.
Aortic Coarctation↗