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Biomedical subjects

C Cope

Publications and source records attributed to C Cope.

At least 91 records · Page 5Linked to original sources
PubMed1985

Guide wire extension.

Any specialized guide wire can be converted to an exchange guide wire by the addition of an eyelet on its stiff end to which an extension guide wire may be hooked.

Angiography↗
PubMed1984

Optimal use of tolazoline in arteriography.

Intraarterial tolazoline, injected before the contrast medium in peripheral and visceral arteriography, has been shown to enhance the diagnostic value of the examination by inducing vasodilation. The time of maximal dilatation after injection, however, has not been clearly established. Photophlethysmography (PPG) was used to measure blood flow changes in 20 consecutive patients with lower-extremity arterial disease at rest and during the first 10 min after intraarterial tolazoline injection. Neither time to maximal dilatation (mean, 5.9 +/- 2.1 min) or PPG amplitude increase (mean, 251 +/- 177.2%) was significantly affected by the level of disease, severity of disease, or number of vessels present at the ankle. To make optimal use of tolazoline's vasodilatory effect, a waiting period of 6 min is recommended between tolazoline administration and contrast-medium injection in peripheral arteriography.

Arterial Occlusive Diseases↗
PubMed1983

Angiographic, radiographic, and computed tomographic findings in tuberculosis of the jejunum.

Tuberculous involvement of the jejunum with thickening and infiltration of the bowel wall and subsequent gastrointestinal hemorrhage from multiple bleeding points was encountered. Bleeding could not be controlled by intra-arterial vasopressin infusion. To our knowledge this is the first report of angiographically demonstrated and treated tuberculous gastrointestinal hemorrhage.

Adolescent↗
PubMed1982

Pseudoaneurysms after nephrostomy.

Significant persistent or recurrent bleeding associated with renal arterial pseudoaneurysms was noted in three of 300 nephrostomy procedures. The angiographic diagnosis was made at 9, 6, and 21 days after nephrostomy. The lesions were successfully treated by embolization in two and by intimal dissection in one. The arterial tears were caused by a 16 gauge Teflon-sheathed needle inserted too deeply into the kidney. It is suggested that the lesions can be largely prevented by using only 22 gauge needles for renal puncture and dilating the skinny needle tract by a special guide wire exchanger. A renal angiogram should be obtained promptly if the urine continues to be grossly bloody 3-4 days after nephrostomy. Embolization of a bleeding segmental renal vessel is simple and safe, whereas a conservative approach may lead to severe complications.

Aged↗