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Biomedical subjects

R N Messersmith

Publications and source records attributed to R N Messersmith.

17 recordsLinked to original sources
PubMed2000

Successful management of coronary artery perforation with helical platinum microcoil embolization.

A case of small coronary artery perforation during coronary intervention is presented. Continued leakage occurred despite prolonged intracoronary balloon inflation, in part probably related to the use of glycoprotein (GP) IIB/IIIA inhibitors. It was successfully managed by microcoil embolization without any sequel, helping avoid surgery in a high-risk patient. Cathet. Cardiovasc. Intervent. 51:320-322, 2000.

Aged↗
PubMed1999

Limb-threatening lower extremity ischemia successfully treated with intra-arterial infusion--case reports.

The authors present two patients with acute arterial vasospasm of the lower extremities causing marked ischemia. One patient had a history of Raynaud's disease, the second had been taking Cafergot for migraine headaches. Both patients's were given a test dose of intra-arterial tolazoline (50 mg). The patient with Raynaud's disease demonstrated marked improvement diffusely and was successfully treated with overnight infusion of papaverine. The second patient, taking Cafergot, demonstrated no angiographic response to tolazoline. It was speculated that the arteries of this patient were thrombosed. The patient was successfully treated with urokinase and remained free of pain at the 15-month follow-up.

Adult↗
PubMed1995

Thoracic BB injuries in pediatric patients.

Penetrating thoracic injury from BB shot remains an innocuous event in most patients, but factors including location, proximity, gun type, and patient weight may identify groups at risk. The following cases demonstrate morbidity and mortality in two patients, and this experience may suggest the need for reassessment of this injury.

Adolescent↗
PubMed1993

Use of CT for diagnosis of traumatic rupture of the thoracic aorta.

CT imaging of traumatic aortic rupture has been both advocated and disparaged in the current literature as a reliable diagnostic modality. In a retrospective review of blunt chest trauma patients at our institution evaluated by both thoracic CT and arteriography, we found a 17% false negative rate and a 39% false positive rate. Although we feel CT is not sufficiently sensitive at present to evaluate traumatic rupture of the aorta directly, it is an invaluable adjunctive imaging modality for stable blunt chest trauma patients with equivocal chest radiographs or arteriograms.

Adolescent↗
PubMed1989

Pulmonary nodule mimicked by ECG lead artifact.

Recently, a new ECG lead has been introduced that can mimic a pulmonary nodule to the uninitiated. Alternatively, in those institutions where the lead is commonly seen, physicians may dismiss a real finding on the chest x-ray film as a lead "artifact." We describe the appearance of this new chest wall artifact.

Aged↗
PubMed1987

Occult pulmonary embolism: a common occurrence in deep venous thrombosis.

Ventilation-perfusion scans were used in a prospective study to determine the prevalence of occult pulmonary embolus in proven deep venous thrombosis. Fifty-eight patients without symptoms of pulmonary embolism, but with venographically proven deep venous thrombosis, were subjected to chest radiographs, 99mTc macroaggregated-albumin perfusion scans, and 133Xe ventilation scans. Of the 49 patients with deep venous thrombosis proximal to the calf veins, 17 (35%) had high-probability scans. Of all 58 patients, only 12 (21%) had normal scans. When the study population was compared with a group of 430 patients described in reports of pulmonary perfusion in asymptomatic persons, a significantly higher percentage of high-probability scans was found in the study population with deep venous thrombosis. Baseline ventilation-perfusion lung scanning is valuable for patients with proven above-knee deep venous thrombosis.

Adolescent↗
PubMed1987

PHOENIX. An expert system for selecting diagnostic imaging procedures.

The authors developed a computer system that assists physicians in planning the use of diagnostic imaging procedures. This system, the PHOENIX Radiology Consultant, guides the user through a rational, sequential work-up for a variety of common clinical problems. PHOENIX provides explanations of its reasoning, descriptions of the imaging procedures, and citations of relevant literature.

Diagnostic Imaging↗
PubMed1984

Obstructive migration of renal calculi following cyst aspiration.

The authors report 3 cases of ureteral obstruction secondary to puncture of peri-pelvic renal cysts which had been obstructing and dilating the renal pelvis. In each case, non-obstructive calculi passed from the upper collecting system into the ureter or infundibulum within 72 hours of decompression, causing acute renal colic and marked obstruction.

Aged↗
PubMed1984

Amebiasis presenting as multiple apple core lesions.

An unusual manifestation of amebiasis is presented to demonstrate its ability to masquerade as carcinoma or a variety of colitides. The importance of actively considering Entamoeba histolytica-induced disease in a differential diagnosis of bloody diarrhea is emphasized.

Aged↗
PubMedDate not supplied

Percapsular and percutaneous embolization of renal transplant pseudoaneurysm and AV fistula: case report.

Renal allograft arteriovenous (AV) fistula is a known complication of renal biopsies in patients experiencing renal allograft dysfunction. Treatment may include observation, surgery, or intraarterial embolization. We report a case of postbiopsy renal allograft AV fistula and pseudoaneurysm in which intraarterial embolization was technically impossible. Treatment included percapsular embolization of the pseudoaneurysm using intraoperative ultrasound guidance. The embolization coils served as a guide for subsequent percutaneous embolization of the AV fistula in the angiographic suite. Innovative embolization techniques may be necessary in order to preserve optimal renal function.

Adult↗
PubMedDate not supplied

Brachial plexopathy as a complication of intraarterial cisplatin chemotherapy.

Intraarterial administration of chemotherapeutic agents provides greater local concentration at the tumor site without increased systemic toxicity. Although intravenous infusion of cisplatin is known to cause peripheral neuropathy and intraarterial administration has been reported to cause lumbosacral plexopathy, brachial plexopathy has not been described. We present a case in which infusion of cisplatin into the axillary artery resulted in permanent neurological damage to the posterior cord of the brachial plexus. Proper positioning of the infusion catheter is necessary to minimize potential neural damage.

Adult↗