Byron C. Calhoun

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 Little is known about the anatomic and physiologic changes in the pelvic floor that occur during pregnancy. The purpose of this study was to prospectively document pelvic organ support throughout pregnancy using the standardized system of the International Continence Society, also known as the Pelvic Organ Prolapse Quantification (POPQ) Staging System.(More)
The authors retrospectively evaluated maternal and fetal outcomes of 73 consecutive singleton pregnancies complicated by preterm premature rupture of amniotic membranes. When preterm labor occurred and fetuses were at a viable gestational age, pregnant patients were managed aggressively with tocolytic therapy, antenatal corticosteroid injections, and(More)
OBJECTIVE To describe our experience in providing a program of structured interdisciplinary care for the families of fetuses prenatally diagnosed with a lethal congenital anomaly. STUDY DESIGN We developed a comprehensive "perinatal hospice" program for the supportive care of families with fetuses known to have a lethal condition. Upon prenatal diagnosis(More)
OBJECTIVES To apply the Six Sigma tools of Change Acceleration Process and Work-Out and to improve patient access in an outpatient clinic in a hospital-based residency training program. STUDY DESIGN Observational study. METHODS Comparison of productivity in an obstetrics and gynecology clinic after implementation of the Six Sigma principles, with a(More)
BACKGROUND Inconsistent definitions and incomplete data have left society largely in the dark regarding mortality risks generally associated with pregnancy and with particular outcomes, immediately after resolution and over the long-term. Population-based record-linkage studies provide an accurate means for deriving maternal mortality rate data. METHOD In(More)
The controversy over elective cesarean versus vaginal birth with regard to pelvic floor trauma has left many caregivers and patients confused. With the growing evidence to support the development of fecal incontinence as a result of childbirth, we believe that it is imperative to reevaluate modern obstetric practices both for the patient's benefit and for(More)
OBJECTIVE Our purpose was to determine whether exposure of the isolated, perfused human placental cotyledon to different fetal circuit perfusion rates, and to concomitant pressure differences, alters placental production of interleukin 6 and tumor necrosis factor alpha. STUDY DESIGN The maternal and fetal circulations of 2 cotyledons from 5 placentas were(More)
In countries where induced abortion is legally restricted, as in most of Latin America, evaluation of statistics related to induced abortions and abortion-related mortality is challenging. The present article reexamines recent reports estimating the number of induced abortions and abortion-related mortality in Mexico, with special reference to the(More)
When the prenatal diagnosis of a lethal fetal anomaly has been established, some patients choose to continue their pregnancy. Currently, there is a paucity of medical literature addressing the specific management of families in this unique circumstance. We propose a model of care that incorporates the strengths of prenatal diagnosis, perinatal grief(More)