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Dive into the research topics where Mark Alanis is active.

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Featured researches published by Mark Alanis.


American Journal of Obstetrics and Gynecology | 2010

Complications of cesarean delivery in the massively obese parturient.

Mark Alanis; Margaret S. Villers; Tameeka L. Law; Elizabeth Steadman; Christopher Robinson

OBJECTIVE The objective of the study was to determine predictors of cesarean delivery morbidity associated with massive obesity. STUDY DESIGN This was an institutional review board-approved retrospective study of massively obese women (body mass index, > or = 50 kg/m(2)) undergoing cesarean delivery. Bivariable and multivariable analyses were used to assess the strength of association between wound complication and various predictors. RESULTS Fifty-eight of 194 patients (30%) had a wound complication. Most (90%) were wound disruptions, and 86% were diagnosed after hospital discharge (median postoperative day, 8.5; interquartile range, 6-12). Subcutaneous drains and smoking, but not labor or ruptured membranes, were independently associated with wound complication after controlling for various confounders. Vertical abdominal incisions were associated with increased operative time, blood loss, and vertical hysterotomy. CONCLUSION Women with a body mass index > or = 50 kg/m(2) have a much greater risk for cesarean wound complications than previously reported. Avoidance of subcutaneous drains and increased use of transverse abdominal wall incisions should be considered in massively obese parturients to reduce operative morbidity.


Acta Obstetricia et Gynecologica Scandinavica | 2010

Maternal super-obesity (body mass index ≥ 50) and adverse pregnancy outcomes

Mark Alanis; William Goodnight; Elizabeth G. Hill; Christopher Robinson; Margaret S. Villers; Donna Johnson

Objective. To determine if pregnancy complications are increased in super‐obese (a body mass index (BMI) of 50 or more) compared to other, less obese parturients. Design. Cross‐sectional study. Setting and population. All 19,700 eligible women, including 425 (2.2%) super‐obese women with singleton births between 1996 and 2007 delivering at a tertiary referral center, identified using a perinatal research database. Methods. Bivariate and trend analyses were used to assess the relation between super‐obesity and various pregnancy complications compared to other well‐established BMI categories. Adjusted odds ratios (ORs) were calculated using multivariable logistic regression techniques. Main outcome measures. Outcomes for adjusted and unadjusted analyses were small‐for‐gestational age (SGA) birth, large‐for‐gestational age (LGA) birth, preeclampsia, gestational diabetes mellitus (GDM), fetal death, preterm birth, placental abruption, cesarean delivery, and Apgar scores < 7. Results. Compared to all other obese and non‐obese women, super‐obese women had the highest rates of preeclampsia, GDM, LGA, and cesarean delivery (all p < 0.05 for trend test). Super‐obesity was also associated with a 44% reduction in SGA compared to all other women (OR 0.55, 95% confidence interval (CI) 0.40–0.76) and a 25% reduction compared to other, less obese women (OR 0.75, 95% CI 0.54–1.03). Super‐obesity was positively associated with LGA, GDM, preeclampsia, cesarean delivery, and a 5‐minute Apgar score < 7 compared to all other women after controlling for important confounders. Conclusion. Super‐obesity is associated with higher rates of pregnancy complications compared to women of all other BMI classes, including other obese women.


American Journal of Obstetrics and Gynecology | 2008

Early-onset severe preeclampsia: induction of labor vs elective cesarean delivery and neonatal outcomes

Mark Alanis; Christopher Robinson; Thomas C. Hulsey; Myla Ebeling; Donna Johnson

OBJECTIVE The purpose of this study was to describe the success rate of and analyze differences in neonatal outcomes with labor induction, compared with elective cesarean delivery in women with early-onset severe preeclampsia. STUDY DESIGN We conducted a cross-sectional study of women with severe preeclampsia who required delivery between 24 and 34 weeks of gestation. Bivariate and multivariable regression analyses were used to determine factors that were associated with assignment to, success of, and odds of neonatal outcomes after induction of labor. RESULTS Fifty-seven and four-tenths percent of 491 women underwent induction of labor. Vaginal delivery occurred in 6.7%, 47.5%, and 68.8% of women who underwent labor induction between 24 and 28, 28 and 32, and 32 and 34 weeks of gestation, respectively. Induction of labor was not associated with an increase in neonatal morbidity or mortality rate after we controlled for gestational age and other confounders. CONCLUSION Neonatal outcomes are not worsened by induction of labor in women with early-onset severe preeclampsia, although it is rarely successful at <28 weeks of gestation.


Fertility and Sterility | 2010

A short period of ejaculatory abstinence before intrauterine insemination is associated with higher pregnancy rates

Paul B. Marshburn; Mark Alanis; Michelle L. Matthews; Rebecca S. Usadi; Margaret H. Papadakis; Susan Kullstam; Bradley S. Hurst

An ejaculatory abstinence period of <or=2 days before IUI produced the highest pregnancy rates per cycle compared with longer intervals of ejaculatory abstinence. This higher conception rate occurred despite a lower total number of motile spermatozoa inseminated.


Hypertension in Pregnancy | 2010

Examining the effect of maternal obesity on outcome of labor induction in patients with preeclampsia.

Christopher Robinson; Elizabeth G. Hill; Mark Alanis; Eugene Y. Chang; Donna Johnson; Jonas S. Almeida

Objective The objective of this investigation was to evaluate the effect of maternal obesity, as measured by prepregnancy body mass index (BMI), on the mode of delivery in women undergoing indicated induction of labor for preeclampsia. Study Design Following Institutional Review Board (IRB) approval, patients with preeclampsia who underwent an induction of labor from 1997 to 2007 were identified from a perinatal information database, which included historical and clinical information. Data analysis included bivariable and multivariable analyses of predictor variables by mode of delivery. An artificial neural network was trained and externally validated to independently examine predictors of mode of delivery among women with preeclampsia. Results Six hundred and eight women met eligibility criteria and were included in this investigation. Based on multivariable logistic regression (MLR) modeling, a 5-unit increase in BMI yields a 16% increase in the odds of cesarean delivery. An artificial neural network trained and externally validated confirmed the importance of obesity in the prediction of mode of delivery among women undergoing labor induction for preeclampsia. Conclusion Among patients who are affected by preeclampsia, obesity complicates labor induction. The risk of cesarean delivery is enhanced by obesity, even with small increases in BMI. Prediction of mode of delivery by an artificial neural network performs similar to MLR among patients undergoing labor induction for preeclampsia.


American Journal of Obstetrics and Gynecology | 2010

Plasma 25-hydroxyvitamin D levels in early-onset severe preeclampsia.

Christopher Robinson; Mark Alanis; Carol L. Wagner; Bruce W. Hollis; Donna Johnson


Maternal and Child Health Journal | 2013

Maternal pre-pregnancy weight and gestational weight gain and their association with birthweight with a focus on racial differences

Kelly J. Hunt; Mark Alanis; Erica R. Johnson; Maria E. Mayorga; Jeffrey E. Korte


Journal of obesity and weight loss therapy | 2012

Maternal Obesity and Placental Oxidative Stress in the First Trimester

Mark Alanis; Elizabeth Steadman; Yefim Manevich; Danyelle M. Townsend; Laura Goetzl


American Journal of Obstetrics and Gynecology | 2012

785: First trimester placental oxidative stress in women with a history of preeclampsia

Leah Lamale-Smith; Mark Alanis; Satomi Kohno; Jeffrey E. Korte; Laura Goetzl


American Journal of Obstetrics and Gynecology | 2012

426: Adolescent cognitive and anxiety behavior in offspring following in utero exposure to increased trans unsaturated fatty acids through maternal diet

Mark Alanis; Claudia Umphlet; Heather A. Boger; Ann-Charlotte Granholm

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Christopher Robinson

Medical University of South Carolina

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Donna Johnson

Medical University of South Carolina

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Elizabeth Steadman

Medical University of South Carolina

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Bruce W. Hollis

Medical University of South Carolina

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Carol L. Wagner

Medical University of South Carolina

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Margaret S. Villers

Medical University of South Carolina

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Claudia Umphlet

Medical University of South Carolina

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Danyelle M. Townsend

Medical University of South Carolina

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