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S Nastasić

Publications and source records attributed to S Nastasić.

13 recordsLinked to original sources
PubMed2001

Single-day loading dose of oral amiodarone for the prevention of new-onset atrial fibrillation after coronary artery bypass surgery.

BACKGROUND: Various regimens have been proposed for the prevention of postoperative atrial fibrillation, including the use of intravenous and oral amiodarone. The purpose of this study was to determine the effectiveness of a single-day loading dose of oral amiodarone in prophylaxis of atrial fibrillation during the 7 days after coronary artery bypass surgery. METHODS: We conducted a double-blind, randomized, placebo-controlled study encompassing 315 consecutive patients who underwent coronary artery bypass surgery. They received either amiodarone (159 patients) or placebo (156 patients). Therapy consisted of a single oral loading dose of 1200 mg of amiodarone 1 day before surgery, followed by the maintenance dose of 200 mg daily during the next 7 days. Only episodes of atrial fibrillation lasting more than 1 hour or associated with hemodynamic compromise were taken into consideration. RESULTS: Overall, the incidence of atrial fibrillation was similar in patients who received amiodarone (31/159, 19.5%) and placebo (33/156, 21.2%) (P = .78). However, amiodarone reduced the incidence of atrial fibrillation in elderly patients (age > or = 60 years): it occurred in 20 of 75 (26.7%) patients on amiodarone and in 28 of 65 (43.1%) patients in the placebo group (P = .05). There were no differences between the study groups regarding the postoperative intrahospital morbidity and mortality and the duration of hospital stay. CONCLUSIONS: A single-day loading dose of oral amiodarone (1200 mg) does not prevent postoperative atrial fibrillation in a general population of patients undergoing coronary artery bypass surgery. However, it appears that this regimen reduces the occurrence of postoperative atrial fibrillation in elderly patients.

Administration, Oral↗
PubMed2001

[Use of the internal thoracic artery in repeat myocardial revascularization surgery].

The incidence of redo myocardial revascularization is increasing lately. These procedures are accompanied by the higher operative risk, and the use of internal thoracic artery graft may have additional negative impact on early-rization. Mortality and morbidity in this group did not differ significantly compared to a group where only venous grafts were used. Independent predictors of the unfavorable outcome (for both groups) were the presence of the chronic pulmonary disease, age over 65 and NYHA functional class IV. In the group with internal thoracic graft it was the age over 65, while in the group with only vein grafts it was chronic pulmonary disease. We have discussed potential problems during the redo procedure in patients in whom internal thoracic graft was used during the first procedure.

Aged↗
PubMed2000

[History of surgical treatment of atherosclerosis of the coronary arteries--the first 100 years].

Atherosclerotic coronary artery disease is the most common cause of morbidity and mortality. The incidence of cardiovascular morbidity and mortality has been doubled in our country during the period 1980 through 1996. Surgical treatment of the atherosclerotic coronary artery disease is already a century old, ever since Francois-Franck (in 1899) tried to achieve sympathetic denervation of the cervical ganglion. After the interim period of indirect myocardial revascularization, during the last 30 years, direct surgical revascularization has reached excellent early and long-term results, and became one of the most frequently performed procedures in the surgical practice. Use of arterial grafts and, introduced recently, procedures on the beating heart, minimally invasive procedures and, so called, port-access procedures became a daily routine in many centers. Surgical revascularization of the ischaemic cardiac muscle is the rapidly changing entity, along with diagnostic, technical and other improvements. We present a brief historical overview of the efforts of cardiac surgeons to combat the "disease of the century" atherosclerotic coronary artery disease.

Coronary Artery Disease↗
PubMed2000

[Occlusion of a calcified ascending aorta with a Foley catheter in aortocoronary bypass--case report].

Heavily calcified ascending aorta predisposes to aortic injury and distal embolization during total or partial cross-clamping, during the performance of open-heart procedures. Placement of the arterial cannula may be particularly difficult, occasionally virtually impossible using the standard technique, while placing the clamp on such aorta may be extremely risky. We present a case where we have used a Foley-balloon catheter to occlude the densely calcified ascending aorta, during a aorta-coronary bypass procedure, thus completely avoiding the use of the total aortic clamp.

Aorta↗
PubMed2000

[Myocardial revascularization using the internal thoracic artery: pro and con].

Internal thoracic artery (ITA) has superior histological, physiological and pharmacological properties over the venous grafts, and it is considered to be the graft of choice for myocardial revascularization. It has low incidence of late atherosclerotic lesions, and excellent long-term patency. Usage of ITA yields improved clinical results in all subgroups of patients with coronary artery disease, including patients with poor left ventricular function (EF%), left main stenosis, diffuse coronary artery disease and octogenarians. Since superior long-term results (to be expected only 10-15 years after the operation) may be outweighed with slightly higher incidence of early morbidity and mortality, many cardiac surgeons are reluctant to use it routinely. However, this attitude is difficult to justify, since early operative results in patients that have received ITA graft are superior as well, compared to patients that have received vein grafts only.

Humans↗
PubMed1997

Cardiac events after combined surgery for coronary and carotid artery disease.

OBJECTIVE: To evaluate serious cardiac events after combined (either single or two stage) coronary artery surgery (CAS) and carotid endarterectomy (CEA) for concomitant coronary and carotid artery disease. METHODS: We have analyzed our 15 year experience (January 1981-September 1996) with 201 consecutive patients operated on using both approaches. Group A consisted of 48 patients with the single-stage procedure, while in group B (153 patients), two stage procedure was carried out, either as carotid endarterectomy (CEA), followed by coronary artery bypass surgery (CAS) (group B1- 103 patients), or as CAS followed by CEA (group B2- 50 patients). Five patients from B1 group died after the CEA procedure, but were included, despite the fact they never reached the second stage. Left main coronary artery disease was found in 41 patients (20.4%), poor left ventricular function in 49 (24.4%) previous MI in 133 (66.2%), while 136 (67.7%) were in NYHA functional class III or IV. Bilateral carotid involvement was present in 61 patients (30.3%). Unstable angina was more prevalent in groups A and B2 (P < 0.0001). NYHA class III/IV in group A (versus B1, P = 0.001 and versus B2, P = 0.02), low ejection fraction in groups A and B2 (P < 0.0001), bilateral carotid stenosis in group B1 (versus A, P = 0.003 and versus B2, P < 0.0001), and ulcerated plaque in group B1 (P < 0.0001). These differences dictated the surgical strategy, which resulted in different protocols for clinical and operative management. RESULTS: Early mortality for the entire group was 5.5% (11/201) 6.2% in group A, 7.8% in group B1 and 0% in group B2, respectively; (P > 0.05). Serious morbidity occurred in 7.5% of patients (8.3% in group A, 7.8% in group B1 and 6% in group B2, respectively; P > 0.05). Univariate analysis revealed only bilateral carotid stenosis to influence early outcome (P = 0.04). CONCLUSION: Patients with concomitant coronary and carotid artery disease have relatively good immediate operative results, providing all existing lesions are corrected. Despite it did not reach the statistical significance, cardiac events were less frequent in groups A and B2 indicating possible protective effect of prior CAS in patients with concomitant disease.

Aged↗
PubMedDate not supplied

Partial left ventriculectomy and limited heart transplantation availability.

BACKGROUND AND AIM: Partial left ventriculectomy, a novel cardiac volume reduction operation, is applied in countries without a developed heart transplantation program. We sought to determine its impact in our population of patients. METHODS: Partial left ventriculectomy was performed in 38 patients during the last 4 years. Basic inclusion criteria were nonischemic dilated cardiomyopathy and poor response to medical therapy for heart failure. Hemodynamic evaluation was carried out before and after operation. A modified surgical technique of mitral valve repair and ventricle suturing was applied. RESULTS: Thirty-day, 6-month, and 2-year survival rates were 82% +/- 7%, 65% +/- 8%, and 61% +/- 9%, respectively. Duration of heart failure symptoms was the only predictor of survival (p = 0.042). A high proportion of noncardiac causes of death was noted. Functional capacity in surviving patients improved at every successive measurement up to 1 year postoperatively. CONCLUSIONS: The introduction of partial left ventriculectomy in a country with limited heart transplantation availability had a great impact on the management of end-stage heart failure and may represent the only surgical option for some patients. The average cost per patient was substantially lower when compared to heart transplantation.

Adult↗
PubMedDate not supplied

[Use of the internal thoracic artery in patients with stenosis of the left main branch of the coronary artery].

UNLABELLED: Internal thoracic artery (ITA) is the graft of choice in myocardial revascularization. However, superiority of the ITA graft in patients (pts) with left main coronary artery disease is still a matter of debate. PATIENTS: In the period from November 1986 through February 1999, ITA graft was used for myocardial revascularization in 2860 pts. Stenosis of the left main stem was present in 229 patients (8.0%); there were 39 women (17.0%) and 26 diabetics (11.4%). Severely depressed left ventricular function was present in 32 pts (14.0%), while the average age was 56.4 +/- 7.2 years. RESULTS: Operative mortality was 1.3% and postoperative morbidity was 5.2%. Average postoperative hospital stay was 7.9 days (6-29). There were no differences in analyzed parameters between patients who received ITA graft and similar group of 240 patients who received vein grafts only, during the same period of time. All 16 patients operated on in the period 1986-1992 (6-12 years follow-up) are alive. CONCLUSION: It is safe to use ITA graft for myocardial revascularization in patients with left main coronary artery stenosis. Early operative results are favorable and these patients should not be denied the benefit of the ITA graft, since long-term results are proved to be good as well.

Aged↗