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In the United States, increases in cardiovascular disease, cardiomyopathy, and cerebrovascular accidents are significantly contributing to the increase in maternal mortality.
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Over the past 30 years, maternal mortality secondary to obstetric hemorrhage, hypertensive disorders of pregnancy, and anesthetic complications has improved.
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Obstetric hemorrhage remains the leading contributor to maternal cardiac arrest in the United States.
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Knowledge of best practices in obstetric anesthesia is critical to
Anesthesia for Obstetric Disasters
Section snippets
Key points
Maternal mortality
In 1986, the Centers for Disease Control and Prevention initiated surveillance of maternal deaths.1 Pregnancy-related death is defined as the “death of a woman while pregnant or within 1 year of the end of a pregnancy that was caused by pregnancy or its physiologic effects, a complication of the pregnancy or its management.”1 Between 1987 and 2013, maternal mortality in the United States increased from 7.2 to 18.0 deaths per 100,000 live births.1
Traditional causes of maternal mortality, such as
Cardiac arrest in pregnancy
Although rare, maternal cardiac arrest may lead to significant maternal and fetal morbidity and mortality. Population-based data in the United States, the United Kingdom, and Canada reveal an estimated incidence between 1:12,000 and 36,000 hospitalizations for delivery with survival rates to hospital discharge between 40.7% and 71.3%.7, 8, 9, 10
Maternal risk factors for cardiac arrest in pregnancy include parturients who are greater than 35 years of age, gestational age less than 37 weeks,
Obstetric Hemorrhage
Maternal hemorrhage is the leading cause of cardiac arrest during hospitalization for delivery in the United States.8,17 Survival of maternal hemorrhage continues to improve but is associated with blood transfusion and hysterectomy.2,18,19 The American College of Obstetricians and Gynecologists’ reVITALize program has recently redefined postpartum hemorrhage (PPH) as “total blood loss greater than or equal to 1000 mL or blood loss accompanied by signs or symptoms of hypovolemia within 24 hours
High Neuraxial Anesthesia Blockade
High neuraxial anesthesia blockade (HNAB) may occur in the setting of epidural anesthesia via unintentional injection of local anesthetic into the subarachnoid or subdural space, migration of an epidural catheter into the subdural or subarachnoid space, or overdose of local anesthetic in the spinal or epidural space. The Serious Complications Repository Project identifies the incidence of high neuraxial block as 1:4336 obstetric anesthetics with unrecognized spinal catheters identified in
Disclosure
The authors have nothing to disclose.
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Cited by (0)
This article originally appeared in Anesthesiology Clinics, Volume 38, Issue 1, March 2020.