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Biomedical subjects

M I Shaff

Publications and source records attributed to M I Shaff.

At least 37 records · Page 2Linked to original sources
PubMed1982

An examination of the physical characteristics leading to angioplasty balloon rupture.

Six polyvinyl chloride and six polyethylene angioplasty balloons were inflated six times each under laboratory conditions. Outside diameter of the balloons was measured on initial and final inflations; volume was measured by water displacement at each inflation. In addition, three balloons in either group were constricted with a silk suture around the midportion. Balloons were then intentionally ruptured and the rupture site recorded. The diameters of the polyvinyl chloride balloons increased over six inflations, while they remained relatively constant for the polyethylene balloons. Rupture sites were in the area of the balloon that had the greatest outside diameter, and the tears were longitudinal.

Angioplasty, Balloon↗
PubMed1981

Pulmonary lymphangioleiomyomatosis.

A case of pulmonary lymphangioleiomyomatosis is reported and the computed tomographic findings are described. The disease is characterized by chylous pleural effusions, a reticulonodular pattern, and the development of air trapping with bullous formation. Computed tomography is useful in demonstrating the early presence of these bullae and in excluding a malignant etiology in a patient with spontaneous chylothorax.

Chylothorax↗
PubMed1981

Progression of renal artery fibromuscular dysplasia in 42 patients as seen on angiography.

Forty-two hypertensive patients with fibromuscular dysplasia who had angiographic evidence of the development of new disease or of the progression of existing disease were studied. Renal arterial disease was classified as medial fibroplasia with aneurysms (12 patients), subadventitial fibroplasia (24 patients), or intimal fibroplasia (6 patients). Progression of the disease was shown in all 42 patients during the follow-up period (from 1 month to 11 years and 4 months). The results indicate that all forms of fibromuscular dysplasia are progressive and have variable rates of progression.

Adult↗
PubMed1981

Hydrops fetalis: sonographic evaluation and clinical implications.

A systematic sonographic evaluation of hydropic fetus is presented, based on 21 cases and a literature review. The clinical implications of fetal ascites with or without anasarca, maternal hydramnios, maternal oligohydramnios, or an abnormally thick placenta are discussed as they relate to fetal outcome. It is concluded that sonography could play a major role in determining the optimal approach to perinatal management of the fetus in hydrops fetalis, and thus contribute to a reduction in the perinatal mortality and morbidity associated with this disorder.

Edema↗
PubMed1980

The importance of early ultrasonography in jaundice.

The ultrasonographic findings in 3 patients with longstanding jaundice of clinically unsuspected obstructive nature are presented and discussed. Attention is drawn to the importance of early ultrasonography, even when the clinical and biochemical picture is not necessarily in keeping with a diagnosis of obstructive jaundice.

Adenoma, Bile Duct↗
PubMed1980

Per catheter control of haemorrhage from the superior and inferior mesenteric arteries.

The relevant findings in 11 cases of per catheter control of haemorrhage from different sites in the large and small bowel are presented together with a description of the techniques and some of the possible complications of vasopressin infusion and gelfoam embolisation. In six of these cases vasopressin infusion was sus achieved by embolisation, three following the failure of vasopressin therapy. In one case embolisation of the ileo-colic artery produced a caecal infarct. Important differences in the vascular supply to the large and small bowel and their practical significance in embolisation are discussed.

Adult↗
PubMed1979

Diagnosis and control of diverticular bleeding by arteriography and vasopressin infusion. A report of 2 cases.

Large-bowel bleeding usually arises from either angiodysplasia or colonic diverticula. Diverticular bleeding is more common in the right or the transverse colon, even though diverticula are more common on the left. Arteriography in these patients may identify the bleeding site, and in some cases vasopressin infusion controls the bleeding. Embolization of the large bowel is not recommended because of the danger of necrosis.

Aged↗
PubMed1979

The accelerated diagnosis of jaundice with ultrasonography and narrow-needle cholangiography.

The accuracy of ultrasonography in the diagnosis of jaundice in 70 patients has been compared with that of transhepatic cholangiography and the results of surgery and liver biopsy. A simplified system of grouping the ultrasonic data is presented. The results indicate that ultrasonography is capable of differentiating obstructive from non-obstructive jaundice in 94% of cases and of defining the correct anatomical level in 85% of cases. The accuracy of narrow-needle cholangiography was 100% for obstructive jaundice and 66% normal duct entry rate for non-obstructive jaundice.

Bile Ducts↗
PubMed1979

A radiological approach to infertility--hysterosalpingography.

The hysterosalpingograms of 98 patients with infertility were reviewed with reference to technical problems, radiological features of each pathology and accuracy of reporting. Findings were confirmed by review of the reports of laparotomy or laparoscopy on all patients. Of the total number of fallopian tubes investigated (196), 70 hydrosalpinges were correctly diagnosed from a total of 77. Agreement between HSG and operation was achieved in 123 of 127 fallopian tubes with peritubal adhesions, in all six of those with cornual spasm and in eight with cornual occlusion. In 16 of 20 fallopian tubes with partial distal occlusion, reporting was correct. With the potential accuracy of HSG diagnosis, we contend that it should be a preliminary procedure in every case, and in many may be the only investigation of tubal patency required prior to surgery or conservative management.

Constriction, Pathologic↗
PubMed1977

Ultrasonic diagnosis of thanatophoric dwarfism in utero.

There are several types of short-limbed neonatal dwarfism. Before the delineation of thanatophoric dwarfism many dwarfs who died early in infancy were labeled "achondroplastic." Intrauterine radiological diagnosis is possible and the clinician may be alerted to the possibility of the condition by noting short squat limbs with a relatively large head on ultrasound examination, especially in cases of hydramnios.

Adult↗