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Biomedical subjects

W H Bush

Publications and source records attributed to W H Bush.

85 records · Page 5Linked to original sources
PubMed1979

Long-term radiographic-pathologic follow-up of patients treated with visceral transcatheter occlusion using isobutyl 2-cyanoacrylate (Bucrylate).

Visceral transcatheter occlusive therapy was performed with isobutyl 2-cyanoacrylate (Bucrylate) in 14 patients. Of 10 patients who subsequently died, postmortem examination in 6, performed 2--196 days post-embolization, showed only a mild histiocytic foreign body giant cell reaction to Bucrylate. The reaction was confined to the vessel lumina and did not involve the vessel walls or contiguous parenchymal tissues. Clinical and radiographic follow-up in the other 4 patients (range = 30--180 days) showed no evidence of untoward reaction to Bucrylate. No ischemic or inflammatory complications were observed in any of the peripheral organs.

Adult↗
PubMed1979

Transcatheter occlusive therapy of genitourinary abnormalities using isobutyl 2-cyanoacrylate (Bucrylate).

Transcatheter occlusive therapy was performed with isobutyl 2-cyanoacrylate (Bucrylate) in 14 patients with a variety of genitourinary abnormalities. Bucrylate was found to be a valuable agent when used to: (1) occlude vessels with very slow flow; (2) occlude vessels in patients with coagulopathies; (3) occlude high flow arteriovenous fistulas; (4) perform superselective vessel occlusion; and (5) produce permanent vessel obliteration. Bucrylate was used effectively in this group of patients and was used without complications or evidence of histotoxicity.

Adult↗
PubMed1978

Single dose oral cholecystography.

The routine use of single dose oral cholecystography is suggested for the examination of outpatients. A diagnosis is more quickly obtained for the great majority of patients and there is a lower incidence of side effects. An effective method of contrast administration and filming is discussed. The medical, personal, and economic impact of single dose oral cholecystography is contrasted with that for routine consecutive dose examinations in an outpatient population.

Administration, Oral↗
PubMed1977

Needle tract seeding following aspiration of renal cell carcinoma.

A case of tumor implantation along the needle tract 20 months after needle aspiration of a renal cell carcinoma is reported. This rare but possible complication of needle aspiration should not discourage its use in the evaluation of renal mass lesions. Needle aspiration should be reserved for those patients in whom the clinical findings, roentgenograms and sonography indicate a benign process (that is to confirm that the mass is benign).

Adenocarcinoma↗
PubMed1976

A new method for percutaneous nephrostomy.

A new method of percutaneous nephrostomy using techniques to place a No. 12 French balloon catheter in the renal collecting system is described. Case reports demonstrate tumor palliation and temporary drainage to improve the very ill prior to definitive surgery. A translumbar aortogram catheter is placed lateral to paraspinous muscles and Dotter vascular dilators are used to allow insertion of the large balloon catheter.

Aortography↗
PubMedDate not supplied

Pneumoscrotum after blunt chest trauma.

A case of pneumoscrotum after a suicide jump with blunt chest trauma and chest tube placement is reported. Pneumoscrotum itself has little clinical importance, but it is essential for the clinician to determine the origin of the air, and a careful search for the source of air is necessary. Three possible routes of air in the pneumoscrotum are reviewed. Many reported cases, including this case, had a cause distant from the pelvis: air dissected subcutaneously to the scrotum because of pneumothorax, tube thoracostomy, and air leak combined with ventilatory resuscitation efforts.

Adult↗
PubMedDate not supplied

Blood back flow into angiographic catheters.

PURPOSE: Because of a potential impact on thrombus formation, this study determines the degree of blood back flow into catheters filled with different fluids. MATERIALS AND METHODS: Catheters filled with saline or non-ionic or ionic contrast medium were placed in pulsatile circulating human blood in vitro. Catheter orientation was varied, and blood back flow was recorded. RESULTS: When the leading end of the catheter was angled downward, blood back flow into a contrast material-filled catheter was far greater than that into a saline-filled catheter (7.0 vs 0.5 cm). Conversely, when the leading end of the catheter was horizontal, blood back flow was much greater when the catheter contained saline versus contrast media (3.6 vs 0.4 cm). Ionicity of contrast material did not affect back flow. CONCLUSION: Back flow of blood into a catheter can be considerable and is dependent on the type of fluid within the catheter and orientation of the leading end of the catheter. Angiographic techniques adjusted to these findings are important to maintain patient safety.

Blood Physiological Phenomena↗
PubMedDate not supplied

Image magnification in renal and superior mesenteric angiography: CT calculation and assessment of variables.

PURPOSE: To estimate the magnification that occurs in conventional renal and mesenteric angiography and to assess the influence of anatomic and technical variables. PATIENTS AND METHODS: Anticipated image magnification was derived solely from computed tomographic (CT) measurements obtained of 152 consecutive adult patients who underwent abdominal CT. Scans showed the distance from the origin and distal portions of both renal arteries to the anterior and posterior body surfaces, as well as the distance from the origin of the superior mesenteric artery to the lateral body surfaces. Assuming a 101.6-cm (40-inch) source-to-image receptor distance, the degree of magnification was calculated for posteroanterior, anteroposterior, and lateral radiographic imaging techniques. RESULTS: Calculated mean magnification for the proximal renal artery was 14.5% (range, 7.2%-25.8%) with posteroanterior imaging and 26.7% (range, 22.3%-36.7%) with anteroposterior imaging and a 10-cm-thick table. Mean magnification for the distal renal artery was 16.1% (range, 8.8%-25.3%) with posteroanterior imaging and 24.6% (range, 19.5%-36.4%) with anteroposterior imaging and a 10-cm-thick table. Magnification of the superior mesenteric artery was 17.8% (range, 12.5%-33.9%) with left lateral imaging. Regression analysis documented a linear relationship between percentage magnification and body diameter. CONCLUSION: Arterial location, imaging technique, and especially body habitus affect the degree of magnification in a predictable fashion.

Adolescent↗
PubMedDate not supplied

Digital subtraction rotational angiography for aneurysms of the intracranial anterior circulation: injection method and optimization.

PURPOSE: To optimize parameters of rotational angiography for examination of the internal carotid circulation; to compare rotational angiography with standard digital subtraction angiography (DSA) in the evaluation of aneurysms of the intracranial internal carotid circulation; and to determine tolerance and safety limits of prolonged internal carotid injection angiography. METHODS: Rotational angiograms were obtained during injection of the internal carotid circulation as part of the clinical angiographic evaluation of aneurysms in 41 patients. Injection rates, X-ray delays, and fields of view were studied retrospectively. Findings at rotational angiography and standard DSA were compared. Nonionic contrast material was injected over 6 seconds, and patients were studied before and after prolonged injection angiography by physical and laboratory examination, including measurement of blood pressure, pulse, and intracranial pressure. RESULTS: Vascular conspicuity was equivalent at carotid injection rates of 4 and 5 mL/s delivered over 6 seconds. At 3 mL/s, more image manipulation was required to see small vascular structures. One-second X-ray delay combined with 6-second injection duration provided the best arterial depiction of intracranial vessels from start to end of rotational angiography. Maximal rotational resolution was with a 17-cm field of view. Identification of aneurysms and small vessels was equivalent at all injection rates. Aneurysm detection was equivalent with rotational angiography and DSA. In 9 of 31 aneurysms, the neck was defined more clearly with rotational angiography than with DSA, compared with 2 of 31 that were seen better with DSA. Aneurysms of the intracranial internal carotid circulation were seen with rotational angiography and not DSA in 12 of 41 cases. No change was noted in clinical or laboratory findings. CONCLUSION: Rotational angiography provided better definition of the aneurysmal neck and greater clarity of aneurysms than did DSA; it also improved the level of confidence in predicting the presence or absence of aneurysms, especially in the anterior communicating artery; however, in our small series it did not significantly increase the detection of aneurysms. Prolonged injection angiography was well tolerated in all patients.

Aneurysm, Ruptured↗