J S Levisky

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Results of the Uristat test (Shield Diagnostics Ltd.), a novel enzyme-linked immunosorbent assay (ELISA) for detection of urine antibodies to seven common bacterial pathogens, were compared with results of urine culture, urinalysis, and clinical history to determine the usefulness of Uristat in the diagnosis of urinary tract infections (UTIs). Midstream,(More)
Six published fetal weight estimating regression models proposed for clinical use were evaluated in 259 pregnant women who delivered within 72 h of an ultrasound evaluation performed with sector scanner. The patient sample included 89 (33.2%) fetal weights that were below the 10th or above the 90th percentile for menstrual age. The actual mean percent error(More)
Duplicate endocervical swabs were collected from 1824 patients for detection of Chlamydia trachomatis. Specimen pairs were combined into 400 microL of 0.9% saline solution. After vortexing, a 40-microL sample was smeared and stained with Papanicolaou's method for detection of endocervical and/or metaplastic (E-M) cells. The remaining specimen was tested for(More)
Duplicate endocervical swabs were collected from 1,675 patients to assess the effects of variations in specimen quality on Chlamydiazyme (Abbott Laboratories) detection of Chlamydia trachomatis and the incidence of false-positive results. One swab (at random) from each patient was tested for C. trachomatis antigen by using the standard Chlamydiazyme(More)
Four hundred and five women with singleton pregnancies and fetal age determination by crown-rump length were classified on the basis of their prenatal clinical findings into four risk categories for intrauterine growth retardation (IUGR), defined as a neonatal weight below the 10th percentile of age-dependent birth weight distribution curve. The incidence(More)
We measured the microviscosity of amniotic fluid between 28 and 40 weeks of gestation in 252 normal pregnancies and in 172 pregnancies complicated by factors known to influence fetal lung maturation, including chronic high blood pressure, pregnancy-induced hypertension, diabetes mellitus, and therapy with betamethasone. Comparison of the microviscosity(More)
In an attempt to increase Chlamydiazyme (Abbott Laboratories) detection of Chlamydia trachomatis antigen and to establish the reproducibility of positive results, we carried out an investigation into the usefulness of testing duplicate specimens, of more aggressive endocervical specimen collection by using cytobrushes instead of swabs, and of the repeated(More)
Endocervical swab and cytobrush specimens from 1,301 symptomatic women were microscopically analyzed for adequacy and tested using Chlamydiazyme (CZ) (Abbott Laboratories). When the swab specimen was collected first, blocking antibody-confirmed CZ-positive results were obtained from 48 (8.0%) of 599 patients, 42 (87.5%) from swabs and 46 (95.8%) from(More)
To find a rapid and sensitive test for detection of Group A streptococci (GABS), the performance of the TestPack Strep A (TPSA; Abbott) was compared with culture with the use of rayon-tipped throat swabs from symptomatic patients six months to 90 years of age. Each swab was first inoculated to a 5% sheep blood agar plate and then tested for GABS antigen(More)
Cross sectional curves and individual fetal growth curves standards from the Rossavik growth model [P = c(t)(k + s(t]] were generated for abdominal and head circumferences, femur diaphysis length and estimated fetal weight from a sample of 59 women with twin pregnancy. These curves were compared to their counterparts in singleton pregnancies. Cross(More)