Biomedical subjects
N Feldman
Publications and source records attributed to N Feldman.
The incidence of significant fetomaternal hemorrhage in patients undergoing cesarean section.
To determine the incidence of fetomaternal hemorrhage in patients undergoing cesarean section, Kleihauer-Betke tests were performed in the immediate postoperative period on 199 parturients. Some degree of hemorrhage was detected in 18.5% of patients, with 2.5% demonstrating greater than 30 ml of fetal blood. Comparison of groups on the basis of indication for cesarean delivery revealed no difference in rates of fetal hemorrhage. Because patients with greater than 30 ml of fetal blood would not be adequately protected from Rh sensitization by the standard 300 micrograms dose of Rh immune globulin, we recommend screening all Rh-negative patients undergoing cesarean section for the presence of significant fetomaternal hemorrhage.
Vaginal dilators for intermittent pelvic support. A case report.
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Bone scintigraphy in a patient with cerebro-costo-mandibular syndrome.
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A false-positive indium-111 labeled leukocyte scintigram in a patient with a painful hip prosthesis.
A Tronzo hip prosthesis is designed to elicit an inflammatory reaction in order to promote prosthesis stability. A three-phased bone scan and Ga-67 imaging in conjunction with physical examination and laboratory findings failed to demonstrate evidence for osteomyelitis in a patient with a painful hip prosthesis, in whom images obtained with In-111-labeled leukocytes were positive. This observation demonstrated that the interpretation of the latter technique in demonstrating inflammation can cause a false impression of an infectious process.
Visualization of the uterus on evaluation of transplanted kidneys.
A vascular blush was noted in the pelvis during flow studies in two women with kidney transplants. The vascular structure was noted to be due to the uterus. In one patient, the activity in the area of the uterus could have been mistaken for excretion of agent into the bladder.
Differing mental disorders in the Cushing syndromes.
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Some chemical characteristics of dimethylsuberimidate and its effect on sarcoplasmic reticulum vesicles.
Sarcoplasmic reticulum vesicles treated with dimethylsuberimidate lose the capacity for ATP-promoted Ca2+ accumulation and show other properties indicative of leaky vesicles. As an aid to assessing whether this effect was caused by cross-linking or by hydrolysis products, characteristics of dimethylsuberimidate hydrolysis under incubation conditions used were measured. At pH 7.0, 25 DEGREES C, dimethylsuberimidate is hydrolyzed with an apparent first order rate constant of 0.016 min-1, to give dimethylsuberate as the principal product. The effect on ATP-promoted Ca2+ accululation was shown to be caused by partially and fully hydrolyzed products of the diimido ester, and not to cross-linking of membrane components.
Impairment of adaptive tolerance to oxygen toxicity by systemic immunosuppression.
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