The 33rd Annual Meeting of the Society for Maternal-Fetal Medicine (SMFM) recently concluded in San Francisco. At the conference, world-renowned leaders in maternal-fetal medicine presented cutting-edge basic, clinical and epidemiological research.  Here we highlight top tweets from the meeting, including coverage of an award presented to Contemporary OB/GYN Editorial Board member Elliott Main, MD.

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#SMFM13

Storified by ContemporaryOBGYN· Tue, Feb 19 2013 13:02:26

Study links periconceptual folic acid with reduced autism risk http://fb.me/J8EFgzvTMy SMFMDr Veyver (Baylor): NIPT is appropriate for detecting aneuploidies in high risk women #SMFM13Gautam KolluDr Norton (Stanford): Disproportionate number of positives in 'no call' zone for Verinata's test $ILMN #SMFM13Gautam Kollu"As you can see, our country is covered in pessaries." Great line from ProTWIN study presentation. #smfm13Wash U ObGyn3 of first 8 oral presentations dealing with short cervix. Decidedly international flair as well. #smfm13Wash U ObGyn5 year follow up of MACS trial: no difference in death, growth or neurodevelopment after multiple courses of antenatal steroids. #smfm13My SMFM17OHP is ineffective in asymptomatic twins with a short cervix (<25 mm) #smfm13Wash U ObGynMichael Foley wins SMFM Lifetime Achievement Award. #smfm13My SMFMBetween 17OHP study today, in addition to knowledge about Rouse, there is lack of evidence of benefit in twin pregnancies. #smfm13Wash U ObGynAs far as steroids, one course good. Rescue good (Garite). Multiple have potential for harm and now no long term benefit. #smfm13Wash U ObGynCell free fetal RNA in amniotic fluid of obese women reveal a proestrogenic, pro inflammatory state. #smfm13Wash U ObGynHighly encouraged by the huge collaborations being presented today #smfm13. Twin birth study with 2800 women from 26 countries!Wash U ObGynRCT of planned mode of delivery for twins: 4% of planned vag needed CS, no difference in maternal or perinatal outcome. #smfm13My SMFMOur fellow Amanda Trudell presenting her work on risk of still birth after 37 weeks. #smfm13 http://pic.twitter.com/TeHBSGEBWash U ObGynRCT of DHA- and EPA-rich fish oil for women at risk for postpartum depression: no benefit. #smfm13My SMFMHeather Frey presenting her study on Genetic Variation associated with Preterm Birth in Black Women. #smfm13 http://pic.twitter.com/BODZDKfXWash U ObGynIndira Mysorekar and her presentation of bacterial reservoirs. #smfm13 http://pic.twitter.com/CoPFv96mWash U ObGynDr. Platt leading the Pregnancy Foundation @ThePregFound with initiation of the Quilligan Scholars Program. #smfm13 http://pic.twitter.com/JkD8rOxUMy SMFM@MySMFM Dr. Quilligan and Dr. Zuspan. 2 giants in the field of MFM. They have changed many lives. #smfm13 http://pic.twitter.com/WplJoKsIMy SMFMVery interesting. @SRomAndARom: Allergic disorders more common among children born by cesarean section, exposed to Western diet #SMFM13”Wash U ObGynDecreased brain apoptosis seen in fetuses of obese pregnant women. Study evaluated cffDNA in amniotic fluid specimens. #smfm13Wash U ObGynEdlow et al: maternal obesity associated with differential expression of genes involved in neurodevelopment. #smfm13My SMFMHalf of reproductive-aged women with OSA and symptoms had mod-severe echo findings. #smfm13My SMFMNicotine exposure in utero associates with increased risk of cardiovascular disease in female offspring. #smfm13My SMFMGyamfi: diabetes not independently associated with RDS in preterm infants #smfm13My SMFMNeat to see social media studies at #smfm13. This looked at SM usage in Boston. http://pic.twitter.com/k00YBVBXWash U ObGynGetting ready for some late breaking research added to conference. #smfm13. #aspirin http://pic.twitter.com/bovVTHcLWash U ObGyn11 NNT with low dose ASA to achieve live birth in restricted stratum (single loss within 12 months). Need to start preconception. #smfm13Wash U ObGynLow dose aspirin improves live birth rate in women with a pregnancy loss within year prior to conception. #smfm13My SMFMTaking low dose ASA prior to conception improves live birth of one had a miscarriage prior to 20 weeks. #smfm13My SMFMHealthy Moms trial: lifestyle intervention with weekly group support reduces gestational weight gain and LGA births in obese women. #smfm13My SMFM#smfm13 Dr Lu and MCHB part of newly launched National Strategy to reduce Infant Mortality w March of Dimes, Strong Start and more.CMQCC#smfm13 Dr Lu. #SACIM works to move US infant mortality below 4.5. First on list - Improve Womens Health before during beyond pregnancy!CMQCCGreat group of MFMs at R&G. #smfm13 http://pic.twitter.com/xeq7t8KPAnthony Shanks#smfm13 CMQCC preeclampsia task force co-chair Dr Larry Shields research award - OB hemorrhage protocols work! http://pic.twitter.com/xItvqbdbCMQCC#smfm13 Congratulations Drs Elliott Main and Larry Shields! Peer recognition of your contribution to maternal health http://pic.twitter.com/QNyibRR4CMQCCUNC's Dr. Menard | Aspirin May Up Chance for Baby After Miscarriage http://bit.ly/12E3jQz @MySMFM #smfm13UNC OBGYNTwins Don't Need C-Sections http://nyti.ms/Zp7LBP (but you'd want an MD who is experienced w/vaginal breech deliveries) #smfm13Ruth Ann Crystal, MD