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Biomedical subjects

S S Sane

Publications and source records attributed to S S Sane.

7 recordsLinked to original sources

Superior vena cava stenting.

Treatment of SVC obstruction with metallic stents is a rewarding procedure. The patients have symptoms that are severe and debilitating and cause significant impairment of life-style. Stent placement rapidly alleviates the symptoms of SVC syndrome and improves the patient's quality of life. The long-term patency rates have not been established; however, in patients with SVC syndrome secondary to malignant disease, stents usually remain patent for the lifetime of the patient. Recurrences can be treated with further interventional radiographic techniques. Currently, because the long-term patency rates of SVC stents are not known, most interventional radiologists tend to treat SVC stenosis from benign causes with balloon angioplasty before placing metallic stents.

Anticoagulants↗

Percutaneous gastrostomy tube placement in patients with ventriculoperitoneal shunts.

OBJECTIVE: The purpose of this study is to determine the risk of CNS and/or peritoneal infection in children with ventriculoperitoneal shunts in whom a percutaneous gastrostomy tube is placed. MATERIALS AND METHODS: We placed 205 gastrostomy or gastrojejunostomy tubes from January of 1991 to December 1996. Twenty-three patients (10 boys, 13 girls) had ventriculoperitoneal shunts at the time of placement. All shunts were placed at least 1 month prior to placement of the gastrostomy tube. The patients ranged in age from 8 months to 16 years with a mean age of 6 years, 9 months. Patient weight ranged from 2 kg to 60 kg. All 23 children required long-term nutritional support due to severe neurologic impairment. No prophylactic antibiotics were given prior to the procedure. Of the patients, 21/23 had a 14-F Sacks-Vine gastrostomy tube with a fixed terminal retention device inserted, using percutaneous fluoroscopic antegrade technique. Two of the 23 patients had a Ross 14-F Flexi-flo gastrostomy tube which required a retrograde technique due to a small caliber esophagus in these children. RESULTS: All 23 children had technically successful placements of percutaneous gastrostomy (7) or gastrojejunostomy (16) tubes. Of the children, 21/23 (91%) had no complications from the procedure. Two of 23 (9%) patients demonstrated signs of peritonitis after placement of their gastrostomy tubes and subsequently had shunt infections. In both, children CSF culture grew gram-positive cocci. The antegrade technique was used in both children who developed peritonitis. CONCLUSION: Our study indicates children with ventriculoperitoneal shunts who undergo percutaneous gastrostomy are at greater risk for infection and subsequent shunt malfunction. Therefore, we recommend prophylactic antibiotic therapy to cover for skin and oral flora.

Adolescent↗

Evaluation of lower extremity bypass grafts with use of color duplex sonography.

This article reviews the wide variety of graft procedures currently used to bypass lower extremity atherosclerotic disease and the means used to evaluate the grafts, which can be biologic, synthetic, or a combination of both. Graft failure rate can be as high as 10% within the first 10-14 days after placement, leveling off to approximately 2%-4% per year thereafter. Many of the early complications associated with graft placement can be attributed to technical errors in bypass construction. Although angiography remains the standard of reference for the evaluation of these grafts, duplex ultrasound is increasingly being utilized to document patency and detect suspected complications such as intimal flap, perigraft collection, arteriovenous fistula, pseudoaneurysm, and stenosis or occlusion. Sonography is able to clearly depict the echogenic walls of synthetic grafts and demonstrate whether blood flow wave-forms and blood flow velocity in both synthetic and biologic grafts are normal, thus enabling a more accurate diagnosis of suspected complications to be made. Familiarity with the normal sonographic appearance of these grafts, their anastomoses, potential complications, and the pitfalls in making a diagnosis is essential if an accurate diagnosis is to be made.

Arteriosclerosis↗