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Biomedical subjects

E D Bell

Publications and source records attributed to E D Bell.

7 recordsLinked to original sources

Ruptured sinus of valsalva aneurysm in children: report of two cases and literature review.

Two children with ruptured sinus of Valsalva aneurysm are described, each with a ventricular septal defect, and in one there was also an associated discrete subvalvular aortic stenosis. The diagnostic appearance of two-dimensional echocardiography and axial angiocardiography are emphasized to allow early diagnosis and surgical repair. A literature review of recent reports in English disclosed that 13 patients under age 20 had been reported to have ruptured sinus of Valsalva aneurysm.

Adolescent

Modified Shumacker repair of transposition of the great arteries. Surgical and angiocardiographic considerations.

Sixteen patients with transposition of the great arteries, 8 days to 2 1/2 years of age, underwent intra-atrial transposition of venous return by the modified Shumacker technique. A bipedicle flap of right atrial wall was used to direct vena caval return to the mitral valve, and a hinged viable flap of pericardium was used to form the lateral wall of the pulmonary venous pathway. Thirteen patients survived operation and are well to date. Two of the three nonsurvivors were less than 1 month of age at operation, and the third had an associated inlet ventricular septal defect and a straddling tricuspid valve. Early postoperative chest radiographs were compared with preoperative films in each patient. Postoperative findings included minor right pleural effusion in four, minor pneumothorax in two, and paralyzed right hemidiaphragm in one. Two patients required a permanent pacemaker because of the development of sick sinus syndrome 2 and 4 years postoperatively. Each preoperative angiocardiogram was reviewed and compared with postoperative studies in nine patients. The latter demonstrated absence of caval gradients in each, trivial baffle leaks in four, a moderate baffle leak in one, small residual ventricular septal defects in two, and mild tricuspid regurgitation in two patients.

Angiocardiography

Bladder hernias.

Six cases of bladder herniation are reported: 4 were associated with inguinal hernias, and 2 were situated in the lower midabdomen. In 1 patient a gangrenous intrascrotal ruptured bladder was found. In most instances simple fascial closure after reduction of the herniation sufficed for treatment. Bladder involvement in any low abdominal wall hernia should be suspected since failure to do so may lead to postoperative complications.

Aged

Tryptophan metabolism in Japanese and British women and its relationship to endogenous steroid levels.

The excretion of the tryptophan metabolites L-kynurenine, 3-hydroxykynurenine, 3-hydroxyanthranilic acid and xanthurenic acid, by normal Japanese and British pre-menopausal, menopausal and post-menopausal women was measured after a loading dose of L-tryptophan. No significant difference was found between the mean excretion levels of the two races. A correlation with the level of plasma oestradiol and the excretion of L-kynurenine and also with the total of the four metabolites was found in pre-menopausal British women but not in Japanese women.

3-Hydroxyanthranilic Acid

A double-blind randomized clinical study of the safety, tolerability and efficacy of Hexabrix in pediatric angiocardiography.

Hexabrix, a low-osmolality radiographic contrast agent consisting of the meglumine and sodium salt of ioxaglic acid (600 mOsm/kg), was evaluated in 50 children undergoing cardiac catheterization in a randomized double-blind manner. In comparison with a conventional radiographic contrast agent (Renografin-76), Hexabrix produced a marked reduction in the pain or discomfort after the injection. Neither agent produced any significant change in pulse or respiratory rates or blood pressure. Changes in left and right ventricular pressures were small and comparable for both groups. Significant dysrhythmias were not noted. There was no evidence of deterioration in renal or hepatic function in either group. Serum LDH and CPK increased comparably with both contrast agents but without any definite evidence of myocardial injury. Postinjection increases in serum osmolality were slightly, but not significantly, higher with Renografin. In the first few hours following the procedure there was an increase in circulating segmented neutrophils and a reciprocal decrease in lymphocytes; this was transient and gone by 24 hours. Radiographic image quality was judged good or excellent in almost all cases. Hexabrix is a contrast agent that is significantly better tolerated than conventional agents and is associated with no greater incidence of side-effects while producing radiographic images of equivalent quality.

Adolescent