BACKGROUND: The Batista operation, or partial ventriculectomy, has been designed by the Brazilian surgeon Dr. Randas Batista as an alternative method for treating patients with idiopathic dilated cardiomyopathy. HYPOTHESIS: This study aimed to analyze electro- and vectorcardiographic data obtained from patients who underwent such surgery, and to evaluate its electrical repercussions on the heart. METHODS: Pre- and postoperative electrocardiography (ECG) and vectorcardiography (VCG) were performed 45 days apart in 15 patients undergoing reductive ventriculectomy. RESULTS: All ECGs showed sinus rhythm, with unchanged QRS duration. Left atrial enlargement (86.6%) and left ventricular hypertrophy (100%) were the most common findings. Bundle-branch blocks (BBBs) were often demonstrated on preoperative studies, predominantly (46.7%) left BBBs. Left anterior fascicular blocks were seen in four patients (26.6%), one associated with right BBB. Electrocardiographic changes suggestive of myocardial infarction (MI) were seen in four patients preoperatively; postoperatively, all had extended to or within the lateral wall. Five additional patients developed lateral MIs postoperatively, for a total of 9 patients (60%) with postoperative signs of infarction (p < 0.05). Electro- and vectorcardiography also showed significant postoperative lowering of QRS voltages (mean 40.74%) in all patients and a consequent difficulty to diagnose left ventricular hypertrophy, although the morphologic features did not change. CONCLUSIONS: These important ECG and VCG alterations are reflections of both the surgical technique and its clinical consequences.
BACKGROUND: The Batista operation, or partial ventriculectomy, has been designed by the Brazilian surgeon Dr. Randas Batista as an alternative method for treating patients with idiopathic dilated cardiomyopathy. HYPOTHESIS: This study aimed to analyze electro- and vectorcardiographic data obtained from patients who underwent such surgery, and to evaluate its electrical repercussions on the heart. METHODS: Pre- and postoperative electrocardiography (ECG) and vectorcardiography (VCG) were performed 45 days apart in 15 patients undergoing reductive ventriculectomy. RESULTS: All ECGs showed sinus rhythm, with unchanged QRS duration. Left atrial enlargement (86.6%) and left ventricular hypertrophy (100%) were the most common findings. Bundle-branch blocks (BBBs) were often demonstrated on preoperative studies, predominantly (46.7%) left BBBs. Left anterior fascicular blocks were seen in four patients (26.6%), one associated with right BBB. Electrocardiographic changes suggestive of myocardial infarction (MI) were seen in four patients preoperatively; postoperatively, all had extended to or within the lateral wall. Five additional patients developed lateral MIs postoperatively, for a total of 9 patients (60%) with postoperative signs of infarction (p < 0.05). Electro- and vectorcardiography also showed significant postoperative lowering of QRS voltages (mean 40.74%) in all patients and a consequent difficulty to diagnose left ventricular hypertrophy, although the morphologic features did not change. CONCLUSIONS: These important ECG and VCG alterations are reflections of both the surgical technique and its clinical consequences.
Authors: P M McCarthy; R C Starling; J Wong; G M Scalia; T Buda; R L Vargo; M Goormastic; J D Thomas; N G Smedira; J B Young Journal: J Thorac Cardiovasc Surg Date: 1997-11 Impact factor: 5.209
Authors: E A Bocchi; G Bellotti; A Vilella de Moraes; F Bacal; L F Moreira; A Esteves-Filho; J T Fukushima; G Guimarães; N Stolf; A Jatene; F Pileggi Journal: Circulation Date: 1997-11-04 Impact factor: 29.690
Authors: H Suma; T Isomura; T Horii; T Ichihara; T Sato; H Fujisaki; M Nishimi; T Ukawa; K Iwahashi; S Saito; J Hosokawa Journal: J Cardiol Date: 1998-02 Impact factor: 3.159
Authors: G Bellotti; A Moraes; E Bocchi; A Esteves Filho; N Stolf; F Bacal; C Medeiros; P Graziosi; G Cerri; A Jatene; F Pileggi Journal: Arq Bras Cardiol Date: 1996-12 Impact factor: 2.000