• Jonathan P Wanderer, Lisa R Leffert, Jill M Mhyre, Elena V Kuklina, William M Callaghan, and Brian T Bateman.
• Department of Anesthesia, Vanderbilt University, Nashville, TN, USA. jonathan.p.wanderer@vanderbilt.edu
• Crit. Care Med. 2013 Aug 1; 41 (8): 1844-52.

ObjectiveTo define the prevalence, indications, and temporal trends in obstetric-related ICU admissions.DesignDescriptive analysis of utilization patterns.SettingAll hospitals within the state of Maryland.PatientsAll antepartum, delivery, and postpartum patients who were hospitalized between 1999 and 2008.InterventionsNone.Measurements And Main ResultsWe identified 2,927 ICU admissions from 765,598 admissions for antepartum, delivery, or postpartum conditions using appropriate International Classification of Diseases, 9th Revision, Clinical Modification codes. The overall rate of ICU utilization was 419.1 per 100,000 deliveries, with rates of 162.5, 202.6, and 54.0 per 100,000 deliveries for the antepartum, delivery, and postpartum periods, respectively. The leading diagnoses associated with ICU admission were pregnancy-related hypertensive disease (present in 29.9% of admissions), hemorrhage (18.8%), cardiomyopathy or other cardiac disease (18.3%), genitourinary infection (11.5%), complications from ectopic pregnancies and abortions (10.3%), nongenitourinary infection (10.1%), sepsis (7.1%), cerebrovascular disease (5.8%), and pulmonary embolism (3.7%). We assessed for changes in the most common diagnoses in the ICU population over time and found rising rates of sepsis (10.1 per 100,000 deliveries to 16.6 per 100,000 deliveries, p = 0.003) and trauma (9.2 per 100,000 deliveries to 13.6 per 100,000 deliveries, p = 0.026) with decreasing rates of anesthetic complications (11.3 per 100,000 to 4.7 per 100,000, p = 0.006). The overall frequency of obstetric-related ICU admission and the rates for other indications remained relatively stable.ConclusionsBetween 1999 and 2008, 419.1 per 100,000 deliveries in Maryland were complicated by ICU admission. Hospitals providing obstetric services should plan for appropriate critical care management and/or transfer of women with severe morbidities during pregnancy.

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