This is the second of a special podcast series on obstetric critical care.  I am joined on this series by Dr. Elizabeth Garchar, MD, FACOG.  She is an OB/GYN and Maternal Fetal Medicine (MFM) specialist who has a particular interest in obstetric critical care.  She is also unique in that she flies regularly with our critical care transport teams and acts as one of our Assistant Medical Directors for the flight program.  So, Dr. Garchar has unique insight into managing this population in transport.   The topic of this podcast is maternal cardiac arrest.  This is, possibly, one of the most stressful clinical encounters we can have as flight crew.  Critical care transport crews are masters of ACLS and resuscitation during cardiac arrest, but what do you do if the patient is pregnant?  Often crews have questions: Can we use the same drugs?  Do you change the dose of different ACLS drugs?  Can you defibrillate a pregnant patient?  Do we change hand position for chest compression?   In this podcast, Dr. Garchar and I go over the recommendations and guidelines from major organizations and clarify some of these important questions.     References     1.          Beckett VA, Knight M, Sharpe P. The CAPS Study: incidence, management and outcomes of cardiac arrest in pregnancy in the UK: a prospective, descriptive study. BJOG. Aug 2017;124(9):1374-1381. doi:10.1111/1471-0528.14521 2.          Bennett TA, Katz VL, Zelop CM. Cardiac Arrest and Resuscitation Unique to Pregnancy. Obstet Gynecol Clin North Am. Dec 2016;43(4):809-819. doi:10.1016/j.ogc.2016.07.011 3.          Biderman P, Carmi U, Setton E, Fainblut M, Bachar O, Einav S. Maternal Salvage With Extracorporeal Life Support: Lessons Learned in a Single Center. Anesth Analg. Oct 2017;125(4):1275-1280. doi:10.1213/ANE.0000000000002262 4.          Callaghan WM, Creanga AA, Kuklina EV. Severe maternal morbidity among delivery and postpartum hospitalizations in the United States. Obstet Gynecol. Nov 2012;120(5):1029-36. doi:10.1097/aog.0b013e31826d60c5 5.          Campbell TA, Sanson TG. Cardiac arrest and pregnancy. J Emerg Trauma Shock. Jan 2009;2(1):34-42. doi:10.4103/0974-2700.43586 6.          Dijkman A, Huisman CM, Smit M, et al. Cardiac arrest in pregnancy: increasing use of perimortem caesarean section due to emergency skills training? BJOG. Feb 2010;117(3):282-7. doi:10.1111/j.1471-0528.2009.02461.x 7.          Ducloy-Bouthors AS, Gonzalez-Estevez M, Constans B, Turbelin A, Barre-Drouard C. Cardiovascular emergencies and cardiac arrest in a pregnant woman. Anaesth Crit Care Pain Med. Oct 2016;35 Suppl 1:S43-S50. doi:10.1016/j.accpm.2016.06.008 8.          Einav S, Kaufman N, Sela HY. Maternal cardiac arrest and perimortem caesarean delivery: evidence or expert-based? Resuscitation. Oct 2012;83(10):1191-200. doi:10.1016/j.resuscitation.2012.05.005 9.          Enomoto N, Yamashita T, Furuta M, et al. Effect of maternal positioning during cardiopulmonary resuscitation: a systematic review and meta-analyses. BMC Pregnancy Childbirth. Feb 25 2022;22(1):159. doi:10.1186/s12884-021-04334-y 10.        Fischer C, Bonnet MP, Girault A, Le Ray C. Update: Focus in-hospital maternal cardiac arrest. J Gynecol Obstet Hum Reprod. May 2019;48(5):309-314. doi:10.1016/j.jogoh.2019.02.007 11.        Fisher N, Eisen LA, Bayya JV, et al. Improved performance of maternal-fetal medicine staff after maternal cardiac arrest simulation-based training. Am J Obstet Gynecol. Sep 2011;205(3):239 e1-5. doi:10.1016/j.ajog.2011.06.012 12.        Ford ND, DeSisto CL, Galang RR, Kuklina EV, Sperling LS, Ko JY. Cardiac Arrest During Delivery Hospitalization : A Cohort Study. Ann Intern Med. Apr 2023;176(4):472-479. doi:10.7326/M22-2750 13.        Helviz Y, Einav S. Maternal cardiac arrest. Curr Opin Anaesthesiol. Jun 2019;32(3):298-306. doi:10.1097/ACO.0000000000000719 14.        Jeejeebhoy FM, Morrison LJ. Maternal cardiac arrest: