Fetal weight prediction by measuring thigh volume using three cross-sectional images of femur with three-dimensional ultrasound is simple and takes 2 minutes per measurement.
Absent or reversed umbilical artery end-diastolic velocity in growth-restricted fetuses is associated with a tenfold increased risk of neonatal thrombocytopenia.
Blood flow in the internal jugular vein differs between growth-restricted and normally grown fetuses.
Histopathologic chorioamnionitis is associated with intraventricular hemorrhage but not with decreased developmental index scores in very low birth weight infants.
Higher total doses of tocolytic magnesium sulfate are associated with an increased risk of perinatal death among infants with birth weights of 700–1249 g.
Newborns discharged early are at increased risk of death within the first year of life.
Pregnancy-associated loss of bone mass, measured by ultrasound examination of the os calcis, is associated with maternal growth, primigravidity, and greater baseline bone mass.
Low pregnancy weight gain is associated with increased risk of preterm delivery, particularly if women are underweight or of average weight before pregnancy.
The severity of acute placental inflammation is not related significantly to the biophysical profile score or its individual components in cases of premature rupture of membranes before 32 weeks.
First-trimester screening for Down syndrome and trisomy 18 is effective and results in identification of a high yield of affected cases for each diagnostic procedure done.
The strongest determinant of the use of episiotomy is provider practice, with lesser contributions from birth weight, length of second stage of labor, and epidural analgesia.
Within 3 years of normal smear results, important cervical cytologic abnormalities are uncommon and the incidence of abnormalities is unrelated to time since smear.
Amplified immunohistochemical staining for endoglin identifies more cervical tumor vessels and better predicts lymph node metastases than panendothelial factor VIII-related antigen.
An ovarian cyst is the most common cause of ovarian enlargement in girls and young women under 21 years of age, justifying consideration of a laparoscopic approach.
High extraperitoneal cystotomy does not require prolonged continuous bladder drainage.
Rizatriptan effectively treats menstrually associated migraine headaches.
In postmenopausal women with chronic respiratory insufficiency, medroxyprogesterone (60 mg/day for 2 weeks) induces widespread endocrine aftereffects that could explain the prolonged ventilatory improvement.
While levonorgestrel partially antagonizes the inhibitory effects of ethinyl estradiol on atherosclerosis, there appears to be a modest atheroinhibitory influence of combination oral contraceptives.
Intravaginal clindamycin for 3 days and oral metronidazole for 5 days are similarly effective treatments for bacterial vaginosis, but the former is better tolerated.
Obstetric providers are more likely than pediatric providers to report prescribing or recommending nicotine replacement to pregnant or lactating smokers as usual practice, respectively.
Complications of hysteroscopic procedures are rare, but half are entry-related, and operative procedures have a sevenfold higher complication rate than diagnostic procedures.
An increase in placental trophoblast apoptosis in preeclampsia might be immune-mediated by Fas and Fas ligand.
The common C to T polymorphism at nucleotide 677 of the methylenetetrahydrofolate reductase gene that causes mildly elevated serum homocyst(e)ine concentrations does not predispose to severe preeclampsia.
Comparative genomic hybridization allows detection of numeric chromosome anomalies when classic karyotyping fails in macerated or nonmacerated stillborns.
Betamethasone administered to women at risk of preterm delivery can cause adrenal suppression.
Labor induction at 41 weeks' gestation increases labor complications without improving neonatal outcomes.
White blood cell counts after cesarean provide information about infection risk.
Vaginal fungal cultures are positive in 61.5% of women with cyclic vulvitis.
A combined laparoscopic-vaginal approach can be used in surgical treatment of rectovaginal endometriosis.
Family medicine and obstetrics and gynecology can successfully collaborate in the care of obstetric patients through a structured approach to privilege delineation, clinical protocols, and educational programs.
A detailed obstetric casebook, kept over 30 years by Dr. John Mackieson of Charlottetown, Prince Edward Island, provides valuable insight into the practice of obstetrics in Canada 150 years ago.
Letters to the Editor: PREDICTION OF BIRTH WEIGHT BY ULTRASOUND IN THE THIRD TRIMESTER Gerard G. Nahum, Harold Stanislaw, Eva K. Pressman Obstet Gynecol 2000 96: 319-320. [Full Text] [PDF]
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