American journal of kidney diseases : the official journal of the National Kidney Foundation
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Comparative Study
Performance of the Cockcroft-Gault and modification of diet in renal disease equations in estimating GFR in ill hospitalized patients.
Estimating glomerular filtration rate (GFR) in severely ill inpatients is clinically important for therapeutic interventions and prognosis, but notoriously difficult to do accurately. The Modification of Diet in Renal Disease (MDRD) equation and Cockcroft-Gault (CG) formula are widely used to estimate renal function in sick hospitalized patients; however, neither method has been validated in this setting. ⋯ Estimation equations are performed poorly compared with iGFR and are not reliable measures of actual level of function in sick hospitalized patients, especially those with a high BUN/SCr ratio. Although use of the 6-variable MDRD equation provides a better estimation of GFR, it still is unsuitable for clinical application in this population.
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Randomized Controlled Trial Multicenter Study Comparative Study Clinical Trial
Fenoldopam mesylate in early acute tubular necrosis: a randomized, double-blind, placebo-controlled clinical trial.
Acute tubular necrosis (ATN) occurs commonly in critically ill patients and is associated with increased morbidity and mortality. Fenoldopam is a dopamine receptor alpha1-specific agonist that increases renal blood flow in patients with kidney failure. We hypothesized that administration of low-dose fenoldopam during early ATN would decrease the need for dialysis therapy and/or incidence of death at 21 days. ⋯ Fenoldopam does not reduce the incidence of death or dialysis therapy in intensive care unit patients with early ATN.
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Randomized Controlled Trial Multicenter Study Comparative Study Clinical Trial
Peer mentoring: a culturally sensitive approach to end-of-life planning for long-term dialysis patients.
This study is designed to explore the impact of peer mentoring on end-of-life decision making. ⋯ These results suggest the importance of addressing specific cultural factors in the process of AD education. Common practice assumes that printed materials are effective in educating patients about health care and decision making. However, peer mentoring, a relationship-centered person-to-person approach, may be more effective in some cultural groups because it partakes of oral, rather than written, traditions. Acknowledging cultural differences and tailoring our approach could be powerful in enhancing trust and participation and decreasing potential disparities in health care outcomes.
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Case Reports
Acetaminophen-induced anion gap metabolic acidosis and 5-oxoprolinuria (pyroglutamic aciduria) acquired in hospital.
A rare cause of high anion gap acidosis is 5-oxoproline (pyroglutamic acid), an organic acid intermediate of the gamma-glutamyl cycle. Acetaminophen and several other drugs have been implicated in the development of transient 5-oxoprolinemia in adults. We report the case of a patient with lymphoma who was admitted for salvage chemotherapy. ⋯ After usual causes of high anion gap acidosis were ruled out, a screen for urine organic acids showed 5-oxoproline levels elevated at 58-fold greater than normal values. Predisposing factors in this case included renal dysfunction and sepsis. Clinicians need to be aware of this unusual cause of anion gap acidosis because it may be more common than expected, early discontinuation of the offending agent is therapeutic, and administration of N -acetylcysteine could be beneficial.
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Comparative Study
Hypokalemia in Chinese peritoneal dialysis patients: prevalence and prognostic implication.
Abnormal potassium metabolism may contribute to the increased cardiac morbidity and mortality seen in dialysis patients. We studied the pattern of serum potassium levels in a cohort of Chinese peritoneal dialysis (PD) patients. ⋯ Hypokalemia is common in Chinese PD patients. Serum potassium level was associated with nutritional status and severity of coexisting comorbid condition. Furthermore, hypokalemia was an independent predictor of survival in PD patients. Additional studies may be needed to investigate the benefit of potassium supplementation for PD patients with hypokalemia.