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OBJECTIVE To determine whether semen quality has changed in the United States over the last 25 years. DESIGN Retrospective review. SETTING Three U.S. sperm banks, Cryogenic Laboratories, Inc. (Roseville, Minnesota), Idant Laboratories (New York, New York), and California Cryobank, Inc. (Los Angeles, California). INTERVENTION None. MAIN OUTCOME(More)
The meiotic segregation of 24 spermatozoa obtained from a 47,XXY male is described. Three-colour fluorescence in-situ hybridization with probes for chromosomes X, Y and 18 was used. Five spermatozoa carried an X chromosome, seven carried a Y, six had an XY gonosomal complement, five were missing the sex chromosome and one spermatozoon was presumably diploid(More)
OBJECTIVE To determine whether geographic variations in sperm counts might bias conclusions drawn from studies of semen quality. DESIGN Reanalysis of published data from a meta-analysis of 61 studies from 1938 to 1990 that concluded a worldwide decline in semen quality over the last 50 years. MAIN OUTCOME MEASURES Influence of geographic location on(More)
Purpose: The purpose of this study was to assess the predictive value of a modified form of Kruger's strict criteria for sperm morphology for pregnancy outcomes after intrauterine insemination (IUI) and controlled ovarian hyperstimulation (COH) in the presence of normal sperm concentration and motility. Materials and Methods: A retrospective review of 42(More)
OBJECTIVES • To review all the various techniques and their results and efficiencies to provide practicing urologists with some guidance for choice of technique • To discuss improvements of varicocelectomy techniques in the last 15 years and their impact on results of surgery. PATIENTS AND METHODS • A PubMed English literature review of literature from(More)
PURPOSE Metabolic syndrome, characterized by central obesity, insulin resistance, dyslipidemia and hypertension, is highly prevalent in the United States. When left untreated, it significantly increases the risk of diabetes mellitus and cardiovascular disease. It has been suggested that hypogonadism may be an additional component of metabolic syndrome. This(More)
PURPOSE Children born to older parents are at greater risk for genetic abnormalities, such as Down syndrome. The influence of maternal age on Down syndrome is well established but little is known about the genetic consequences of advanced paternal age. MATERIALS AND METHODS Data on the incidence of Down syndrome from 1983 to 1997 (3,419 cases) were(More)
Transurethral resection of ejaculatory ducts has become an effective surgical treatment for male infertility caused by ejaculatory duct obstruction. We report on a patient treated successfully by transurethral resection of the ejaculatory ducts for a large midline cyst who postoperatively complained of terminal urinary dribbling lasting several minutes. On(More)
PURPOSE OF REVIEW We surveyed the growing literature on ejaculatory duct obstruction and provide suggestions regarding its diagnosis and management. RECENT FINDINGS Ejaculatory duct obstruction is a rare cause of male infertility. With the advent of the high resolution transurethral ultrasound (TRUS) technology, there has been an increase in diagnosis of(More)