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Smoking cessation in an OB/GYN residency clinic

The objective of this study was to evaluate changes in the behaviors of pregnant women who smoke and their care providers following implementation of a comprehensive multidisciplinary smoking cessation program. A retrospective cohort study of 202 charts before and after program implementation was conducted. We examined patients' self-reported smoking behaviors and documentation of care providers' responses over the course of prenatal care. Chi-square analyses and Student's t-tests were used as appropriate with significance at p < 0.05. Overall smoking rates were 41% and 44% during the two time intervals. Significant reductions in daily cigarette consumption were found following implementation of the program (37% vs. 71%). No significant increase in smoking cessation was observed (29% vs. 32%). A significant difference in the time interval between initial identification of smoking during pregnancy and documentation of intervention was found (11.56 ± 7.14 vs. 7.65 ± 6.06 weeks). The percentage of pregnant smokers in the clinic was 2.5 times the statewide rate and 3.5 times the national rate. While cessation is the ideal goal, reductions in daily cigarette consumption contribute to reduced risk of low birth weight babies. The majority of the patients accomplished this goal. Changes in care provider behavior were limited to cessation counseling earlier in the course of prenatal care. Suggestions for program improvements include additional structure and increased training.

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Cord blood nRBC distributions in a low-risk population: can they identify the time of fetal injury?

The hypothesis of this study is that nucleated red blood cells (nRBCs) released in response to low [O 2] are correlated with components of such a response (e.g., reticulocytes and increased erythrocyte number), and that such a response is correlated with abnormal placental growth, pathology, and reduced fetal growth. 166 term births had complete blood counts (CBC) and differentials performed on cord blood. Of these, 139 had placental examination blinded to hematologic data. Total nRBC count was calculated from nRBC count/100 white blood cells (WBC) and corrected WBC count. Nonparametric (Spearman's) correlations assessed associations with hematocrit and total RBC, reticulocyte, and neutrophil counts and with placental parameters. Logtransformed nRBC counts served in multivariate regression. Our results were that nRBCs and reticulocytes were correlated (p = 0.03, r = 0.21). nRBC and reticulocytes did not correlate with hematocrit. After adjustment for reticulocyte count, nRBCs were correlated with band neutrophils (p = 0.02, r = 0.30). Reticulocytes correlated with neither myeloid count. nRBC count was related to birthweight (r = 0.21) and placental weight (r = 0.20), but not to other placental measures. Reticulocyte count was related to placental volume (r = 0.20, p = 0.02) and fetal/placental weight ratio (r = −0.31, p = 0.007). No placental pathology was related to fetal hematology. A predictive equation including birthweight and placental weight showed p = 0.05, although each individual p was >0.4. In conclusion, our data suggest that elevated nRBC and reticulocyte counts identify clinically well term fetuses with compensatory responses to altered [O 2]. A portion of nRBC variance is independent of reticulocyte count, and attributable to change in band neutrophil count. In well term newborns, nRBC count is related to birthweight and placental weight, but this relationship is likely complex and non-linear.

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Emergency contraception: a “fire extinguisher” for unintended pregnancies

The American College of Obstetricians and Gynecologists defines emergency contraception, also known as post-coital contraception and the “morning after pill,” as “a therapy for women who experience an act of unprotected sexual intercourse.” It has been estimated that post-coital contraception could reduce the number of unintended pregnancies by 2 million and the number of induced abortions by 1 million. Several methods of emergency contraception are widely accepted including an estrogen-progestin combination, progestin only, mifepristone (RU486), and the copper intrauterine device (IUD). The major side effects of post-coital contraception include nausea, vomiting, and menstrual cycle abnormalities. Currently, the biggest obstacles to post-coital contraception in the United States are limited experience among practitioners and lack of awareness and accessibility among patients. Analogous to a fire extinguisher in homes, emergency contraception requires immediate access for success. There is a nationwide campaign, supported by major national medical organizations, to increase physician acceptability and to make hormonal emergency contraception available over-the-counter, thereby increasing visibility and patient convenience. Until the availability improves, it is prudent for physicians to prescribe emergency contraception as well as provide prevention counseling during routine visits.

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