C Krenzel

University of Minnesota

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C C Coleman

Mississippi Sports Medicine and Orthopaedic Center

B W Schlam

Harvard University

Kurt Amplatz

University of Minnesota

F Castañeda

University of Cartagena

B J Derauf

United States Department of Veterans Affairs

D H Epstein

Northwestern Medicine

G P Moradian

Fairview Health Services

Peter G. Duane

University of Minnesota

Susan A. Berry

Duke University

Harold Coons

Sharp Memorial Hospital

Cooperative Institutions

University of Minnesota

Fairview Health Services

University of Minnesota Medical Center

University of Minnesota System

Twin Cities Orthopedics

United States Department of Veterans Affairs

Minneapolis VA Health Care System

Harvard University

Mayo Clinic in Arizona

Minneapolis Heart Institute Foundation

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Management of a Giant Fluid-filled Bulla by Closed-Chest Thoracostomy Tube Drainage

CHEST Journal (1997)

Lawrence S. Kirschner William M. Stauffer Peter G. Duane C Krenzel

Bulla (seal)

Thoracostomy

Postural drainage

10.1378/chest.111.6.1772

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Citations (12)

Mechanical thrombectomy: results of early experience.

Radiology (1993)

C C Coleman C Krenzel Charles A. Dietz Gwen K. Nazarian Kurt Amplatz

PURPOSE: To evaluate the clinical application of a mechanical thrombectomy device in occluded lower extremity arteries and bypass grafts. MATERIALS AND METHODS: A mechanical thrombectomy device was used in five patients with acutely occluded lower extremity bypass grafts (n = 2) or superficial femoral arteries (n = 3). RESULTS: The thrombus was completely removed in three cases (two bypass grafts and one native superficial femoral artery). In two of the patients with occlusions in the native superficial femoral artery, the thrombus was partially removed. In these two patients, the aspirate demonstrated a more fibrous thrombus that was not easily fragmented. In one of these two patients, the coagulum was thought to be embolic from the heart. CONCLUSION: The thrombectomy device works well in recent thromboses, particularly in polytetrafluoroethylene grafts in which organization does not occur. Its efficacy in chronically occluded vessels is not certain.

Polytetrafluoroethylene

Superficial femoral artery

10.1148/radiology.189.3.8234707

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Citations (41)

Double-lumen needle for percutaneous ureteral pressure-flow studies.

Radiology (1989)

D H Epstein David W. Hunter C C Coleman B J Derauf C Krenzel

Ureteral perfusion studies in patients without preexisting renal access currently must be intermittently interrupted for intrarenal pressure measurement. A double-lumen needle has been successfully placed in four patients (two with native and two with transplanted kidneys). This permits simultaneous perfusion and intrarenal pressure monitoring yet maintains the safety and ease of use of a single skinny needle.

Lumen (anatomy)

10.1148/radiology.172.2.2748841

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Percutaneous enterostomy with the Cope suture anchor.

Radiology (1990)

C C Coleman Harold Coons Constantin Cope B J Derauf C Krenzel

Eighty-two percutaneous enterostomies were performed at three institutions with the Cope suture anchor for stomach or jejunal wall stabilization during alimentation tube placement. The anchors were successfully placed into the stomach or jejunum in 81 cases. Early in the series, two anchors were misplaced, with no sequelae. There were no other complications at the time of placement. In all successful cases, excellent immobilization of the viscus was achieved. Tract dilation and tube placement were easily performed, and there were no guidewire or tube dislodgments.

Enterostomy

Jejunum

Dilation (metric space)

10.1148/radiology.174.3.2406788

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Citations (36)

Severe Methylenetetrahydrofolate Reductase (MTHFR) Deficiency: A Case Report of Nonclassical Homocystinuria

Journal of Child Neurology (2008)

L.A. Bishop Richard Kanoff Lawrence Charnas C Krenzel Susan A. Berry

Severe methylenetetrahydrofolate reductase deficiency is an autosomal recessive metabolic disorder of folate metabolism causing elevated plasma homocysteine levels and homocystinuria (MIM 236250). A developmentally delayed 10-year-old girl presented with symptoms of progressive ataxia, dysarthria, tremor, mental status changes, and white-matter changes on magnetic resonance imaging. These changes occurred during a 3- to 4-month time period, with an acceleration of symptoms during 2 to 3 weeks. The patient was found to have extremely high serum homocysteine and low—normal serum methionine. She received treatment with vitamin B12, folate, betaine, multivitamins, and aspirin, with subsequent improvement of her symptoms and reduction in her serum homocysteine level. This case emphasizes the need to include homocystinuria in the differential diagnosis of children with acute/subacute neurological changes, particularly in the context of developmental delay.

Homocystinuria

10.1177/0883073808315410

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Citations (14)