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Analysis of the cause and clinical characteristics of maternal cardiac arrest

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Author:
No author available
Journal Title:
Chinese Journal of Obstetrics and Gynecology
Issue:
10
DOI:
10.3760/cma.j.issn.0529-567x.2011.10.006
Key Word:
妊娠并发症;心血管;心脏停搏;心肺复苏术;Pregnancy complications;cardiovascular;Heart arrest;Cardiopulmonary resuscitation

Abstract: Objective To analyze the cause and clinical characteristics of maternal cardiac arrest.Methods The data of all cases of maternal cardiac arrest from January 2005 to December 2009 in Third Affiliated Hospital of Guangzhou Medical College was retrospectively studied.Results ( 1 ) A total of 41 maternal cardiac arrests (6 in prenatal period,2 in the first stage of labor,7 in the third stage of labor,26 in postpartum period ) were included.All patients regained spontaneous circulation after basic life support.Twelve (29%) mothers survived.Twelve cardiac arrests occurred in the hospital,and the totaldelivery number from January 2005 to December 2009 was 17101,with occurrence rate of 1:1425.(2) Thecauses of arrest were hemorrhagic shock (12,29%),amniotic fluid embolism (7,17%),severepreeclampsia/eclampsia (7,17%),septic shock (6,15%),cardiac disease (2,5%),unidentified cause (2,5% ) and other occasional causes.(3) Thirty-seven (90%) in-hospital maternal cardiac arrest occurred in operation room (16,39% ),ICU (7,17% ),maternity wards (6,15% ),delivery room (5,12% ) and the emergency room (3,7% ).Three (7%) arrest occurred out of hospital and one in the ambulance.Matemal survival rate was 2/3 in the emergency room,8/16 in the operation room,1/5 in the maternity wards,and 1/6 in the delivery room.No mother survived in ICU,ambulance or out of hospital.(4) Five of the 12 survived women showed ischemic encephalopathy after cardiac arrest and one of them developed cerebral infarction in the right corona radiate.(5) In 4 of the 8 cases of cardiac arrest in pregnancy,perimortem caesarean section (PMCS) was performed.In the four PMCS,2 mothers and 2 children survived.In the 4 cases that PMCS was not carried out,no infant survived.Conclusions Hemorrhagic shock,severe preeclampsia and eclampsia,amniotic fluid embolism are the major obstetric causes of maternal cardiac arrest.Septic shock and cardiac diseases are the major non-obstetric causes.Cardiac arrests occurred in emergency room and operation room has a higher maternal survival rate than those occurred in the delivery room and maternity wards.Timely PMCS may ensure the optimal outcome for mothers and fetuses.

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