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Biomedical subjects

E C Martin

Publications and source records attributed to E C Martin.

At least 73 records · Page 4Linked to original sources
PubMed1981

Angioplasty for femoral artery occlusion: comparison with surgery.

Forty-six patients with superficial femoral artery occlusions (range, 1-20 cm) had percutaneous transluminal angioplasty. The primary success rate was 76% with a late closure in six patients. Life table analysis showed a 1 year patency of 56.8%, maintained at 2 years among the group in whom the successful was 4 cm, while in those in whom the lesion was not crossed, it was 9 cm. Over the same period, 133 femoropopliteal bypass grafts were performed. The patients were comparable as to runoff, incidence of diabetes, and distal ischemia. The 1 year patency was 60.2% and the 2 year patency, 42.1%, largely because of the poor performance of grafts other than saphenous vein. Angioplasty seems to be the treatment of choice for short segment occlusions, and should be used in longer occlusions if saphenous vein is not going to be used.

Angioplasty, Balloon↗
PubMed1981

Renal angioplasty for hypertension: predictive factors for long-term success.

Percutaneous transluminal angioplasty was performed in 31 hypertensive patients with primary success in 26 patients (83%). Twenty-three patients had a mean follow-up of 13 months. The cure rate was 30% with a further 26% being improved. However, in the group of patients with lateralizing renal vein renin values, the cure rate rose to 47% with a further 33% improved. Of the eight patients with fibromuscular disease, 83% were normotensive without medication at follow-up; in the 13 patients with atherosclerotic disease, 22% were cured and 44% were classified as improved. Patients with fibromuscular disease and lateralization of renin production are the best candidates for long-term success.

Adult↗
PubMed1980

Selective renal venography in patients with primary renal disease and the nephrotic syndrome.

Fifteen patients with primary renal disease and renal vein thrombosis who presented with the nephrotic syndrome were investigated venographically. In 46% of the patients the cavogram was normal. Selective renal venography is necessary in such patients because the course of patients with renal vein thrombosis and membranous glomerulonephritis is identical to that of patients with membranous glomerulonephritis alone. Eighty per cent of our patients had membranous glomerulonephritis; renal vein thrombosis is now thought to be secondary to this disease.

Glomerulonephritis↗
PubMed1980

Percutaneous intraaortic balloon insertion.

A new single chambered percutaneous intraaortic balloon has been constructed around a central guidewire. The balloon can be wrapped around the guidewire, enabling its insertion into the femoral artery through a 12F sheath inserted with the conventional Seldinger technique. Percutaneous intraaortic balloon insertion has been performed in 27 patients (mean age 58 years) for a variety of medical and surgical indications. Percutaneous balloons could not be advanced into the aorta in two patients (7.4 percent) with severe bilateral aortoiliac occlusive disease. In all 25 patients undergoing intraaortic balloon pumping satisfactory circulatory support was achieved, and 21 (84 percent) of the patients survived to be discharged from the hospital. The mean duration of intraaortic balloon pumping was 3.5 days. Percutaneous intraaortic balloon insertion requires less than 5 minutes and has been successfully performed in the cardiac catheterization laboratory, coronary care unit, operating room and recovery room. After direct balloon removal, external pressure was applied for 30 minutes. No patient experienced hematoma of the groin, aortic dissection, compromised distal pulses or late wound complications. Percutaneous balloon insertion permits the rapid institution of circulatory support and broadens the medical and surgical applications of intraaortic balloon pumping.

Adult↗
PubMed1980

Radiation exposure to the paediatric patient from cardiac catheterization and angiocardiography.

Thermoluminescent dosimetry was used to study the dose received by 50 consecutive paediatric patients. The average thyroid exposure was 7.7 R and the average gonad exposure 0.35 R. The relative contribution of both fluoroscopy and serial film radiography was calculated and over 70% of the thyroid dose comes from the use of the roll film changer. The significance of high thyroid dose is discussed and it is concluded that serial film changers no longer have a primary role in the study of congenital heart disease.

Angiocardiography↗
PubMed1979

Arterialization of the portal vein in cirrhosis: the findings at celiac arteriography.

An angiographic study of a new operation for portal hypertension involving arterialization of the portal vein in combination with an end-to-side portacaval shunt is described. The angiographic appearances differ from those of end-to-side shunts alone. With the new operation there is, in particular, no significant change in the wedge pressure or in the hepatic artery size from preoperative to postoperative studies, and in the majority of patients, the liver size is also unchanged. The incidence of porto-systemic shunting from the portal vein to the low pressure caval system (66%) is lower than for end-to-side shunts alone. Changes are seen in the distal portal bed in the majority of cases.

Arteriovenous Shunt, Surgical↗
PubMed1979

Venography in axillary-subclavian vein thrombosis.

Nineteen patients with 20 axillary-subclavian vein thromboses were examined by venography. In 70% the axillary and subclavian veins were involved in continuity. The innominate vein was seldom involved, although demonstration of this was difficult. In 50% of the patients the thrombosis was a secondary phenomenon associated with either breast carcinoma, central venous pressure lines, heroin addiction, or cervical rib.

Axillary Vein↗
PubMed1979

Supine pedal venous measurement in patients with venous disease.

The measurement of supine pedal venous pressure as a screening test for deep venous thrombosis is re-evaluated. In 83 extremities studied in 50 patients, the false-positive rate was 62%, the false-negative rate 8%. Chronic venous disease, whatever its etiology but particularly in association with the post-phlebitis syndrome, can be a source of error in relying upon this measurement.

Chronic Disease↗
PubMed1978

Arterialization of the portal vein in cirrhosis: the findings at wedge hepatic venography.

A new operation for the treatment of cirrhosis and portal hypertension has recently been described involving arterialization of the portal vein in combination with an end-to-side portacaval shunt. We present, for the first time, the appearances at wedge hepatic venography. No significant change is seen in the wedge hapatic pressure as a result of this technique, and the sinusoidal pattern is preserved. Filling of the portosplanchnic collaterals is not as frequent as after end-to-side shunts alone, and the appearances seem to reflect improved sinusoidal perfusion. The clinical results have been encouraging.

Angiography↗
PubMed1978

The complementary role of sonography and arteriography in the evaluation of the atheromatous abdominal aorta.

Sonography was performed on 41 patients, 24 of whom were suspected of having abdominal aortic aneurysms and 17 of whom had symptomatic peripheral vascular disease. The accuracy of sonography in the diagnosis of aneurysms of the abdominal aorta was evaluated, and the instances in which angioggraphy contributed to the management of these patients was defined. Sonography is adequate for the diagnosis and management of many aneurysms of the abdominal aorta. Aortography is necessary when: (1) an inadequate study has been obtained, (2) the iliac arteries are not visualized, (3) renal or mesenteric artery involvement is suspected, (4) multiple or lobulated aneurysms are found, or (5) the aorta is very tortuous.

Aneurysm↗
PubMed1978

The Klippel-Trenaunay syndrome: clinical and radiological aspects.

Klippel-Trenaunay syndrome (KTS) is characterized by port-wine hemangiomas, deep venous system abnormalities, superficial varicosities, and bony and soft-tissue hypertrophy. When associated with an arteriovenous fistula, it has been termed Klippel-Trenaunay-Parkes-Weber syndrome. It is imperative that both the radiologist and surgeon be aware of this entity, as incomplete evaluation and inappropriate surgery may be devastating. Radiological workup includes phlebography, angiography, and conventional radiography of the involved extremities. Surgery should be performed only to relieve deep venous obstruction (if present) or to correct inequality in the lengths of legs. Removal of superficial varicosities is contraindicated because it will worsen existing symptoms. Five cases of KTS are presented and the literature reviewed.

Adolescent↗
PubMed1978

Deflation of a Sengstaken tube balloon facilitating catheterization of the celiac artery.

Selective catheterization of the celiac axis may be difficult when the lumen of the artery is compromised. The presence of an inflated compression balloon in the stomach may narrow the artery, presumably by placing tension on the median arcuate ligament of the diaphragm. Deflation of the gastric balloon can facilitate catheterization by relieving the extrinsic pressure on the artery.

Adult↗