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Biomedical subjects

S Muralidharan

Publications and source records attributed to S Muralidharan.

At least 55 records · Page 3Linked to original sources
PubMed1981

Surgical treatment of congenital coronary artery fistula.

Six patients with congenital coronary artery fistula underwent successful corrective surgery. Precise diagnosis was established either by retrograde aortography or more recently by selective arteriography. The left coronary artery was involved in four and the right in two cases. The fistula communicated with the right ventricle in three and the right atrium in three subjects. The operative approach is dictated by the site of entry of the vessel into the cardiac chamber. The use of cardiopulmonary bypass for intracardiac repair allows accurate closure of the fistula thereby reducing the chances of recurrence. A follow-up of one to seven years showed that all patients are asymptomatic and leading normal lives.

Adolescent↗
PubMed1981

The adult ductus: review of surgical experience with 131 patients.

Results in patients over 14 years of age who have undergone surgical closure of a patent ductus arteriosus during the period 1967 through 1979 have been reviewed. There were 131 subjects (average age 22 years) with a slight male predominance, which is at variance with other reports. Sixty-two subjects underwent hemodynamic evaluation and of these, 30 had pulmonary artery pressures ranging from 50 to 150 mm Hg. Division and suture of the ductus with aortic cross-clamping under normothermic conditions was performed in 61 subjects. This approach was particularly indicated in cases in which the ductus was unusually short in relation to its diameter as well as in many with atheromatous changes at the aortic end. In 65 subjects, the conventional division and suture with ductus clamps was employed. Total cardiopulmonary bypass with transaortic patch closure of the ductus was carried out in three instances. There were five early deaths which were principally associated with severe pulmonary hypertension. During a follow-up period extending from 1 to 11 years, three subjects died, but the remainder are well and active. Recatheterization data in nine patients with severe pulmonary hypertension showed gratifying results.

Adolescent↗
PubMed1980

The use of an omental pedicle flap in the closure of bronchopleural fistulae.

Two recurrent bronchopleural fistulae in patients in whom previous intercostal myoplasty had failed were successfully closed by an omental pedicle flap and a bucket-handle flap slide over the omentum. The original procedure in both was left lower lobectomy. The advantages of the procedure are its simplicity, the absence of cosmetic defect, and its suitability for left lower or lingular bronchopleural fistulae when other procedures have failed.

Adult↗
PubMed1980

Experience with the surgical treatment of coarctation of the aorta in India.

Between 1961 and 1977, 51 patients underwent operations for coarctation of the aorta. The average age of presentation of these cases was higher than in other series. Only three were asymptomatic, a finding which is not seen in reports from the West. Operative procedures included resection and graft interposition, resection and end-to-end anastomosis, and bypass grafting. However, the technique of patch angioplasty, routinely performed in the last three years of this review, seemed by far the most satisfactory procedure. The overall operative mortality was 9.8%. Hypertension did not regress in some cases in spite of a successful operation. Recoarctation was not seen in this series. Associated defects influenced results adversely. The overall results of operation for coarctation of the aorta have been very satisfactory and comparable with those in other recorded series.

Abnormalities, Multiple↗
PubMed1980

Endomyocardial fibrosis from a surgical standpoint.

Successful surgical correction was accomplished in a 12-year-old boy with proved endomyocardial fibrosis. Pathological features and the role of surgical therapy in the management of this lesion are discussed. This report presents one of the youngest patients who has undergone endocardiectomy and valve replacement for right-sided endomyocardial fibrosis.

Child↗
PubMed1978

Achalasia cardia: a review of 100 cases.

Achaiasia cardia is the commonest benign obstructive lesion of the oesophagus in India. We have reviewed 100 cases over a 20-year period. This is the largest series that has been reported from India. Some unusual features were observed. Males were more often affected than females in a ratio of 2.3:1. Children below the age of 10 years are not often affected, but we had 10 subjects in this age group. In our series dysphagia for solids has been the main presenting feature. Barium swallow X-ray studies of the oesophagus were diagnostic. The treatment of choice had been surgical, and a modified Heller's operation has been the chosen procedure. Our preference is for the thoracic approach. Postoperative complications were few. Long-term follow-up of 65 patients over a 19-year period revealed excellent results in 50 patients (76.9%), good results in 10 (15.4%), and fair and poor results in two (3.1%) and three (4.6%) patients respectively. The fair and poor results occurred in patients with recurrence of symptoms or stricture formation due to reflux oesophagitis. The excellent results even on long-term follow-up, we believe are due to the adequate myotomy that was performed.

Adolescent↗
PubMed1976

Massive left atrial thrombus complicating mitral stenosis with atrial fibrillation: results of surgical treatment.

Thirty-five patients with massive atrial thrombus complicating mitral stenosis and atrial fibrillation were treated surgically. The mean age in this series is lower than that reported in the West. Furthermore, the incidence of preoperative embolic manifestations has been less frequent in our experience. We believe it is desirable to document the presence of a thrombus by selective left atrial cineangiography. Surgical treatment was accomplished with an acceptable mortality. The vital role played by the use of low-molecular-weight dextran and early anticoagulation in decreasing the incidence of postoperative cerebral embolism is emphasized. Follow-up data in the survivors has shown excellent functional status with no late embolic phenomena in any subject.

Adult↗
PubMed1975

The profile and surgical management of mitral stenosis in young patients.

Mitral stenosis in the younger age groups in India is a unique condition characterized by a short duration and a rapid progression of symptoms. The majority of patients with this lesion develop pulmonary hypertension at an accelerated pace, and about one third have associated congestive failure and functional tricuspid regurgitation. Five hundred consecutive patients with this condition were treated surgically, 493 with a closed valvotomy. The over-all hospital mortality rate of 5.8 per cent was related to the severity of the preoperative functional status. In the last 150 cases, the figure dropped to 2 per cent. Assessment during the first 5 years after surgery revealed an excellent functional status in 85 per cent. The incidence of restenosis was only 3.4 per cent in the first 5 year period and 11 per cent in a subsequent 6 to 10 year follow-up period. Twenty of the 21 subjects with restenosis had an excellent functional result following closed transventricular valvotomy, and this status has been maintained during the follow-up period. To our knowledge, there are no other reports of long-term follow-up data in young patients undergoing surgical treatment for mitral stenosis.

Adolescent↗
PubMedDate not supplied

A bypass technique for aneurysms of descending aorta.

Uniformity of opinion does not exist regarding optimal surgical strategy for descending aortic aneurysms. We present a surgical technique for bypass during aortic cross clamp while operating on such aneurysms. Five patients have undergone surgery using this technique. All of them are alive, doing well with no complications.

Aorta, Thoracic↗
PubMedDate not supplied

Aortic valve replacement in India. Early and long term results.

Experience with 261 subjects undergoing aortic valve replacement is presented. The mean age of our patients (29.6 years) is much less an compared to reports from the West. History of rheumatic fever was obtained in 53%. Aortic regurgitation was documented in 72.7% of our subjects whilst the remainder had calcific aortic stenosis. The left ventricular and diastolic pressure was elevated in 24% and the systemic index was less than 3 l/min/m2 in 71%. Associated mitral stenosis was present in 31 subjects (11.8%) who had concomitant open mitral valvotomy. The Starr-Edwards ball valve model 1260 was utilised in the great majority (76.6%). The overall hospital mortality was 9.9% which had decreased to 4.5% during the last five year period. Poor myocardial protection leading to low cardiac output occurring in class IV subjects was the cause of death in most instances. All survivors were followed up for periods ranging from 1 to 12 years (mean 4.2). Thrombo-embolic phenomenon occurred in 1.6 per 100 patient years and the incidence of paravalvar leak has been extremely low (0.4%). This is in striking contrast with reports from other authors. Actuarial analysis at the end of 5 years and 10 years indicates overall probability of survival of 92.9% and 92.2% respectively.

Adolescent↗