We prove that the Strong Axiom of Revealed Preference tests the existence of a strictly quasiconcave (in fact, continuous, generically Coo, strictly concave, and strictly monotone) utility function generating finitely many demand observations. This sharpens earlier results of Afriat, Diewert, and Varian that tested ("nonparametrically") the existence of a piecewise linear utility function that ...

We describe herein a recurrent catheter-related (Port-A-Cath; Smiths Industries Medical Systems [SIMS] Deltec, Inc., St. Paul, Minn.) infection caused by multidrug-resistant Mycobacterium chelonae with two colonial morphotypes in a 53-year-old woman with gastric adenocarcinoma. Four isolates recovered from this patient within a 3-month period were found to belong to a single clone on the basis ...

Evaluators: Bernard E. Statland, Department of Laboratory Medicine and Pathology, Box 198, Mayo Memorial Building, University of Minnesota, Minneapolis, Minn. 55455 Donald S. Young and Maurice Green, Clinical Chemistry Department, National Institutes of Health, Bethesda, Md. 20014 Victor G. Bethune, Jerome S. Nisselbaum, and Morton Schwartz, Department of Biochemistry, Memorial Sloan-Kettering ...

Pamela J. McCabe and Penny Kalpin are certified clinical nurse specialists employed by the Mayo Clinic, Rochester, Minn, a designated Magnet institution. Ms McCabe serves a 40-bed medical cardiac progressive care unit, and Ms Kalpin serves a 37-bed cardiovascular surgery progressive care unit. committee was developed. In this article, we describe the steps taken in committee development, summar...

OBJECTIVE To report cluster breathing pattern associated with a nonbrainstem lesion. DESIGN Case report. SETTING Neurointensive care unit, St Mary's Hospital, Rochester, Minn. PATIENT A patient with subarachnoid hemorrhage developed severe, diffuse, distal bilateral middle cerebral artery vasospasm with resultant cortical laminar necrosis and transient cluster breathing. Intervention Magn...

Complex abdominal aortic aneurysms (AAAs) can preclude the use of endovascular repair. In patients unable to undergo open surgical repair (OSR), endografts outside instructions for might be only option. We present case a woman with highly angulated infrarenal AAA neck who was unsuitable OSR and successfully treated using Gore C-TAG conformable thoracic stent graft (W.L. Associates, Inc, Flagsta...

STUDY OBJECTIVE To estimate the incidence of asthma in an elderly population and to describe the clinical characteristics, use of health services, and long-term survival of persons with onset of asthma after age 65 years. DESIGN Retrospective cohort study. SETTING Rochester, Minn. PATIENTS All Rochester, Minn, residents age 65 years or older who met criteria for onset of definite or proba...