Biomedical subjects

M J Naderi

Publications and source records attributed to M J Naderi.

3 recordsLinked to original sources

PubMed1978

Rectal bleeding secondary to fecal disimpaction: angiographic diagnosis and treatment.

Two cases of bleeding caused by manual disimpaction of fecal material are presented. Angiography played a critical role in the diagnosis and treatment. One case was managed with balloon tamponade, and the other was successfully treated by selective intra-arterial vasopressin infusion, after prior intravenous infusion had been ineffective. A history of fecal disimpaction should suggest the possibility of low rectal bleeding which can be diagnosed and treated angiographically.

Adult↗

PubMed1978

Transcatheter embolization for lower gastrointestinal bleeding.

Transcatheter embolization was performed in 7 patients with lower gastrointestinal bleeding. Hemorrhage was controlled in each of the 5 actively and massively bleeding patients but recurred after several months in 2 patients who had bled intermittently from vascular dysplasias. The authors recommend preoperative angiographic localization of the bleeding site in almost all cases of major lower gastrointestinal bleeding. When the cause and bleeding site have been identified, it seems reasonable to exploit the therapeutic potential of the angiographic catheter already in place: indeed, surgery may be obviated. If embolism fails or ischemic sequelae develop, partial colectomy can still be performed. Further long-term follow-up will be necessary before the role of transcatheter embolization can be definitively assessed.

Aged↗

PubMed1977

Angiographic aspects of experimental nonocclusive intestinal ischemic injury.

An experiment was designed to fulfill the following aims: (1) to develop a model of nonocclusive intestinal ischemic injury compatible with survival for several days; (2) to determine the accuracy of angiography in diagnosing the presence and extent of intestinal ischemic injury; and (3) to determine the therapeutic and diagnostic value of intraarterial papaverine infusion. Experimental shock models were developed in the dog, and efficacy of the hypovolemic and normovolemic models was confirmed by gross and histologic evidence of intestinal injury in surviving dogs. No reliable angiographic signs of intestinal mucosal injury could be elicited. Angiographic abnormalities associated with the experiment were attributable to the shock itself and disappeared with the relief of shock. Infusion of papaverine into the superior mesenteric artery within 2 hr of the onset of shock prevented or ameliorated intestinal injury.

Angiography↗