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T Ebels

Publications and source records attributed to T Ebels.

At least 37 records · Page 2Linked to original sources
PubMed1997

Can intraatrial reentry be prevented by changes in surgical technique?

Intraatrial reentry tachycardias can be prevented by surgical technique. Crucial in prevention is not to create areas of slow conduction. Also, the integrity of the terminal crest appears to be essential for normal impulse propagation; at surgery the crest should preferably be left intact. The number of incisions in the atrium should be kept to an absolute minimum. One single incision is the best. Therefore, it is also better to cannulate the caval veins directly instead of using the right atrial auricle.

Cardiac Catheterization↗
PubMed1997

Thoracotomy for postchemotherapy resection of pulmonary residual tumor mass in patients with nonseminomatous testicular germ cell tumors: aggressive surgical resection is justified.

In patients with disseminated nonseminomatous testicular germ cell tumors (NSTGCT), a retroperitoneal residual tumor mass (RRTM) and/or a pulmonary residual tumor mass (PRTM) are often present after successful treatment with cisplatin-based polychemotherapy. Results and complications of postchemotherapy resection of PRTM were studied and survival was calculated. In the period 1979 to 1996, 31 patients with a median age of 28 years (range, 17 to 44 years) underwent 32 thoracotomies for the resection of a PRTM. A solitary lesion was encountered nine times (28.1%) and multiple lesions were encountered 23 times (71.9%). The median size was 15 mm (range, 2 to 60 mm). There were only three major postoperative complications (9.6%): prolonged ventilation, pneumothorax, and pneumonia. In 16 patients (51.6%), the resected PRTM showed mature teratoma, while in four patients (12.9%) it showed viable cancer. In 11 patients only necrosis and/or fibrosis were found (35.5%). Resection of an RRTM had been performed prior to thoracotomy in 20 patients. There was dissimilarity between the histologic features of the resected RRTM and PRTM in 10 of the 20 patients (50%). During a median follow-up of 80 months (range, 2.5 to 203 months), five patients died from metastatic disease (16.1%). The 5-year survival rate was 86.8% and the 10-year survival rate was 82.2%. Owing to the dissimilarity between the histologic features of the postchemotherapy resected RRTM and PRTM in 50% of the patients, all sites of pulmonary residual disease must be resected in patients with disseminated NSTGCT, irrespective of the histologic features of previously resected retroperitoneal residual disease. This approach offers minimal morbidity and a high 10-year survival rate.

Adolescent↗
PubMed1996

[Successful heart transplantation in long-term ventilated patients].

Cardiac transplantation was carried out in three men, aged 50, 34 and 36 years with severe chronic heart failure. They did not completely meet the Dutch criteria, notably with respect to absence of contraindications and the requirement of thorough screening. The treatment was successful.

Adult↗
PubMed1996

Efficacy of serial electrical cardioversion therapy in patients with chronic atrial fibrillation after valve replacement and implications for surgery to cure atrial fibrillation.

Chronic atrial fibrillation (AF) occurs often in the setting of mitral and aortic valve disease. Eventually, these patients undergo valve replacement which improves cardiac function but does not prevent AF. This study investigates which patient may benefit from additional surgery for the cure of AF performed in combination with valve surgery. Seventy-four patients were retrospectively included from our prospective database of patients referred for serial cardioversion therapy between 1986 and 1993. All these patients had chronic AF after valve replacement. After the first electrical cardioversion, patients did not receive antiarrhythmic drugs. Relapses were managed by repeated cardioversions, and then antiarrhythmic drugs were instituted. After a median follow-up of 7 years (range 1.3 to 23), 39 patients had intractable AF. Multivariate analysis revealed that patients with a history of chronic AF before surgery (risk ratio 5.4, confidence intervals 2.5 to 11.3, p = 0.0001) had a poor arrhythmia outcome. In addition, Kaplan-Meier survival analysis demonstrated a lower success rate (p = 0.0017) in patients with mitral valve disease than in those with aortic valve disease. Congestive heart failure (41% vs 6%, p = 0.0007) and cardiovascular mortality (23% vs 9%, p = 0.09) were seen most often in patients with an unsuccessful cardioversion strategy. Thus, patients scheduled for mitral valve surgery with a history of chronic AF should be considered candidates for additional surgery for AF concomitantly performed during valve surgery.

Adult↗
PubMed1996

Coronary reoperation via small laparotomy using right gastroepiploic artery without CPB.

The elective use of the right gastroepiploic artery as an in situ graft has been well established in coronary surgery. We propose a surgical technique for patients undergoing coronary reoperations with a patent mammary graft to the left anterior descending artery. The gastroepiploic artery is used through a small laparotomy when only the right coronary artery or the posterior descending artery needs revascularization. The described technique allows avoidance of both resternotomy and cardiopulmonary bypass.

Abdominal Muscles↗
PubMed1996

Exclusive use of arterial grafts in coronary artery bypass operations for three-vessel disease: use of both thoracic arteries and the gastroepiploic artery in 256 consecutive patients.

METHODS: From September 1989 to September 1994 we operated on a consecutive group of 256 patients with three-vessel disease in whom we used the right gastroepiploic artery together with both internal thoracic arteries. Vein grafts were not used in these patients. This population consisted of 233 men and 23 women whose ages ranged from 31 to 77 years (mean age 57.8 years). RESULTS: Hospital morbidity and mortality were not directly related to the use of the gastroepiploic artery. Patency of the anastomoses in a subgroup of 56 patients (22%) a mean of 16 months after the operation was 98% for the left internal thoracic artery, 96% for the right internal thoracic artery, and 88% for the gastroepiploic artery. Five-year actuarial survival (including in-hospital deaths) was 95.9% and was related only to age. From discharge until the end of follow-up, two patients had a myocardial infarction, six patients underwent a reintervention procedure, and 18 patients had a return of angina pectoris. CONCLUSION: We conclude that the concomitant use of the gastroepiploic artery with the both internal thoracic arteries has low morbidity and mortality in patients with three-vessel disease operated on by experienced surgeons. At this moment, we have no reason to believe graft patency will deteriorate in the future. On the basis of these results, the knowledge that arteries are to be preferred over veins for coronary bypass grafting, and the absence of a leg incision, we believe this operative technique is superior to the use of venous grafts.

Adult↗
PubMed1996

Decision making for the surgical management of aortic coarctation associated with ventricular septal defect.

Coarctation of the aorta and associated ventricular septal defect may be repaired simultaneously or by initial coarctation repair with or without banding of the pulmonary artery. The question is whether specific preoperative criteria can enable the surgeon to choose the optimal surgical management. Between 1980 and 1993, 80 infants younger than 3 months with coarctation and ventricular septal defect were treated surgically. In 64 infants (multistage group), simple coarctation repair was performed through a posterolateral approach, with concomitant banding of the pulmonary artery in 10 infants. Twenty ventricular septal defects were closed as a secondary procedure and four were closed as a tertiary procedure. Sixteen infants (single-stage group) underwent one-stage repair through an anterior midline approach. The total in-hospital mortality rate was 7.5%. Freedom from recoarctation after 5 years was 91.3% in the multistage group versus 60.0% in the single-stage group (p = 0.018). Freedom from secondary ventricular septal defect treatment in the multistage group after 5 years was 40.7%, versus 100% in the single-stage group (p = 0.016). Thirty-seven ventricular septal defects (47.8%) closed spontaneously. In particular, the preoperative left-to-right shunt and extension of the perimembranous VSD into the inlet or outlet were risk factors for the need for eventual surgical ventricular septal defect closure after initial coarctation repair. On the basis of these two risk factors, the probability of the need for eventual surgical treatment of ventricular septal defect after initial coarctation repair can be calculated. This policy offers a well-considered choice between single-stage and multistage repair, weighing the risk of secondary ventricular septal defect treatment versus the risk of recoarctation. Finally, the number of surgical procedures per infant will be as low as possible.

Aortic Coarctation↗
PubMed1995

Additional value of biplane transesophageal echocardiography in assessing the genesis of mitral regurgitation and the feasibility of valve repair.

To determine the additional diagnostic value of biplane transesophageal echocardiography (TEE) in patients undergoing mitral valve surgery, we studied 48 patients with severe mitral regurgitation. Transesophageal echocardiographic video recordings were reorganized in separate transverse and longitudinal sections to allow independent evaluation. Mechanism of mitral regurgitation and anatomic abnormalities of the mitral valve were assessed by all 3 transesophageal echocardiographic modalities and were related to surgical findings. Biplane TEE detected increased leaflet mobility with a sensitivity of 91% and a specificity of 84%, and restricted leaflet mobility with a sensitivity of 100% and a specificity of 97%. Biplane TEE was accurate in the diagnosis of most of the anatomic abnormalities associated with these mechanisms. However, the sensitivity for detecting subvalvular abnormalities (including papillary muscle abnormalities) was poor, and measurement of the annular diameter had a poor correlation with annular dilatation. Although the yield of biplane TEE was better than either transverse or longitudinal TEE alone, the differences did not reach statistical significance, because of the size of the patient group. The surgical procedure (either valve repair or replacement) was correctly predicted with transverse TEE in 71%, with longitudinal TEE in 69%, and with biplane TEE in 79% of the patients. All 3 transesophageal echocardiographic modalities are very capable of assessing the anatomic abnormalities and mechanism of mitral regurgitation, as well as predicting the feasibility of valve repair.

Aged↗
PubMed1995

Increasing cyanosis after total cavopulmonary connection treated by banding a separate liver vein.

An increasing right-to-left shunt after a total cavopulmonary connection was treated by banding the separate liver vein. As a variation on a fenestrated total cavopulmonary connection, this liver vein was not connected with the intercaval tunnel. After a few days, the shunt increased to an unacceptable level. This was treated by banding the liver vein, which was connected with the right-sided atrium and turned out to be only part of the venous drainage of the liver.

Child, Preschool↗
PubMed1995

Retransfusion of suctioned blood during cardiopulmonary bypass impairs hemostasis.

In a previous study we observed extensive clotting and fibrinolysis in blood from the thoracic cavities during cardiopulmonary bypass. We hypothesized that retransfusion of this suctioned blood could impair hemostasis. In this prospective clinical study we investigated the effect of suctioned blood retransfusion on systemic blood activation and on postoperative hemostasis. During coronary artery bypass grafting in 40 patients, suctioned blood was collected separately. It then was retransfused to the patient at the end of the operation (n = 19), or it was retained (n = 21). During the study, 12 consecutive patients, randomized in two groups of 6, were analyzed for biochemical parameters indicating blood activation and clotting. The immediate and significant increase in circulating concentrations of thrombin-antithrombin III complex, tissue-type plasminogen activator, fibrin degradation products, and free plasma hemoglobin demonstrated the effect of suctioned blood retransfusion. Moreover, the increased concentrations of thrombin-antithrombin III complex and fibrin degradation products indicated renewed systemic clotting and fibrinolysis as a direct result of the retransfusion of suctioned blood. Concentrations of all indicators mentioned remained significantly lower in the retainment group. The clinical data showed that retainment of suctioned blood resulted in significantly decreased postoperative blood loss (822 mL in the retransfusion group versus 611 mL in the retainment group; p < 0.05) and similar or even reduced consumption of blood products (513 versus 414 mL red blood cell concentrate and 384 versus 150 mL single-donor plasma; both not significant). We conclude that retransfusion of highly activated suctioned blood during cardiopulmonary bypass exacerbates wound bleeding.

Blood Transfusion, Autologous↗
PubMed1994

Innervated rectus abdominis myofascial flap for dynamic cardiomyoplasty.

This study examined the rectus abdominis myofascial flap as an innervated flap for dynamic cardiomyoplastic purposes. It is common to use the latissimus dorsi to wrap or patch around or in the heart, but there is a need for more innervated skeletal muscle for a variety of reasons. The rectus abdominis musculature often is used for reconstructions and its vascular reliability is well known. The segmental build-up of the rectus abdominis myofascial flap, its direct proximity to the heart, and the superb quality of the anterior fascia allow for more extensive cardiomyoplastic use than with the latissimus dorsi alone. This article describes an anthropometric cadaver study in which the methods of mobilizing the rectus abdominis myofascial flap for cardiac purposes are shown.

Abdominal Muscles↗
PubMed1994

Gastric perforation after aortocoronary bypass grafting with the right gastroepiploic artery.

In coronary artery bypass grafting, we prefer the right gastroepiploic artery as an adjunct to the internal mammary arteries, due to its comparable size to the mammary artery, flow, length, freedom of atherosclerosis, pharmacologic responses, and patency rate. No major gastric complications after the use of the gastroepiploic artery have been reported yet. We report gastric perforation due to excessive coagulation of side branches of the gastroepiploic artery supplying the greater curvature of the stomach.

Adult↗