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To the Editor.
—Recent letters to JAMA have discussed the issue of hyperkalemia in association with the use of calcium channel antagonists.1,2 The link between calcium and potassium transport at the cellular level has been well recognized. Membrane permeability to potassium in many cell types...
—I am pleased that Dr Tiemstra found some points of agreement with my editorial. I am sorry he missed the major thrust of my argument.
Dr Tiemstra draws the erroneous inference that I favor paternalism because I emphasize the dependence, vulnerability, and exploitability of the sick...
In this issue of The Journal, Triplett et al1 discuss the relationship among an established laboratory test (lupus anticoagulant), an experimental laboratory test (anticardiolipin antibody), and a clinical phenomenon (thrombosis). To understand the conclusion of their work, a little background...
Neural tube defects (NTDs) are a group of malformations of the brain and spinal cord that originate at various times during gestation. The most common NTDs are anencephaly and meningomyelocele, which arise during the process of neurulation, a well-defined period between the 17th and 30th day...
The activity of natural (leukocyte) interferon alfa in the treatment of condylomata acuminata was assessed in a randomized, double-blind, placebo-controlled, multicenter trial. Interferon alfa (Alferon N Injection) or placebo was injected into lesions twice weekly for up to eight weeks....
A CASINO may have been just the right choice to discuss in vitro fertilization. Like gambling, "test-tube baby" technology is a chancy and expensive proposition, suggested many practitioners interviewed during the 43rd Annual Meeting of the American Fertility Society in Reno, Nev.
In a 16-week randomized, double-blind, vehicle-controlled study of topical tretinoin in the treatment of photoaging, all patients applied topical tretinoin to one forearm and vehicle cream to the other. Half of the patients received tretinoin to the face, and half received vehicle cream. All 30...
—The physical examination of the patient revealed a normal physiological split of the second heart sound. The second heart sound did not have a fixed split. A two-dimensional echocardiogram was performed with injection of saline into a peripheral vein. There was no evidence of a...
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