Journal of the American Society of Nephrology : JASN
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J. Am. Soc. Nephrol. · Jul 1992
Saccular intracranial aneurysms in autosomal dominant polycystic kidney disease.
The literature on the association of intracranial aneurysms in autosomal dominant polycystic kidney disease (ADPKD) consists mainly of case reports and small series of patients. To provide a more-detailed description of this association and its frequency, the records of all ADPKD patients with saccular intracranial aneurysms, all ADPKD autopsy cases including brain examination, and sex- and age-matched autopsy cases without ADPKD seen at the Mayo Clinic between 1950 and 1989 and of all Rochester residents with a diagnosis of subarachnoid hemorrhage or ADPKD between 1945 and 1984 were reviewed. The presentation of the 41 patients (22 men and 19 women; mean age, 46.4 yr) with this association was subarachnoid hemorrhage in 33, transient ischemic attacks in 2, incidental angiographic or autopsy finding in 5, and discovery during angiographic screening in 1. ⋯ There was a trend for hypertension to be associated with the severity of the subarachnoid hemorrhage. Aneurysmal rupture occurred before age 50 in 64% of patients. Of the 89 ADPKD autopsy cases with brain examination, 22.5% had intracranial aneurysms.(ABSTRACT TRUNCATED AT 250 WORDS)
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J. Am. Soc. Nephrol. · Jan 1992
Nephrologists' experience with and attitudes towards decisions to forego dialysis. The End-Stage Renal Disease Network of New England.
Ethicists and lawyers agree that competent adult patients or their surrogate decision-makers have the right to forego life-sustaining treatment, but the views of practicing physicians have not been well-studied. To examine nephrologists' experience with and attitudes towards decisions to forego dialysis, a questionnaire was sent to all 161 nephrologists performing chronic dialysis in six New England states; 118 (73%) responded. The proportion of nephrologists who reported withholding (not starting) dialysis from the cited numbers of patients during the previous year was 11%, 0; 58%, 1 to 5; 20%, 6 to 10; 8%, 11 to 15; and 3%, greater than or equal to 16. ⋯ With incompetent patients, the issue was raised by the family (42%) or nephrologist (30%). It was concluded that decisions to withhold dialysis are more frequent than decisions to withdraw it. Moreover, nephrologists agree about the management of requests to withdraw dialysis in competent patients or incompetent patients with clear prior wishes; they disagree about the management of incompetent patients with unclear prior wishes.(ABSTRACT TRUNCATED AT 250 WORDS)
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J. Am. Soc. Nephrol. · Jun 1991
Nephrologists' reported attitudes about factors influencing recommendations to initiate or withdraw dialysis.
A nationwide survey of nephrologists was performed to learn which patient factors and characteristics of nephrology fellowship training they reported as influencing their decisions to start or stop dialysis. One hundred seventy-four of 482 responses were received. Most respondents were men in private practice living in large communities (41% in communities over 1,000,000 population). ⋯ Insights about the factors practicing nephrologists reportedly weigh most heavily in making the difficult decisions to withhold or withdraw dialysis are provided by this study. Additional study of the actual practices of nephrologists in decisions to initiate or withdraw dialysis and the factors influencing those decisions are needed. Formal instruction in these and other ethical problems confronting nephrologists should perhaps be included in fellowship programs.
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J. Am. Soc. Nephrol. · Feb 1991
Review Case ReportsGlue-sniffing and distal renal tubular acidosis: sticking to the facts.
An index case is presented to introduce the subject of the acid-base and electrolyte abnormalities resulting from toluene abuse. These include metabolic acidosis associated with a normal anion gap and excessive loss of sodium and potassium in the urine. The major question addressed is, what is the basis for the metabolic acidosis? Overproduction of hippuric acid resulting from the metabolism of toluene plays a more important role in the genesis of the metabolic acidosis than was previously believed. ⋯ The loss of sodium causes extracellular fluid volume contraction and a fall in the glomerular filtration rate, which may transform the normal anion gap type of metabolic acidosis into one with a high anion gap (accumulation of hippurate and other anions). Continuing loss of potassium in the urine leads to hypokalemia. An understanding of the metabolism of toluene provides the basis for the unusual biochemical abnormalities seen with abuse of this solvent.