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Table 3 Frequency of emergency medical services EMS emergency activations for selected obstetric events (n=107,771)a

From: Frequency and severity of prehospital obstetric events encountered by emergency medical services in the United States

Category

Emergency Obstetric Activations, n (%)

Early or threatened labor

15,936 (15)

Malposition, disproportion, or other labor complications

15,433 (14)

 Prolapsed cord

21 (<0.1)

 Non-cephalic presentation

37 (<0.1)

Spontaneous or induced abortion and complications

4,001 (4)

Out-of-hospital birth/delivery

3,489 (3)

 Preterm delivery

1,504 (1)

Early, first or unspecified trimester hemorrhage

1,395 (1)

Eclampsia, preeclampsia, and hypertensive conditions

1,000 (1)

Intra- and post-partum hemorrhage

629 (0.6)

Ectopic or molar pregnancy and complications

332 (0.3)

Maternal cardiac arrest, any etiology

25 (<0.1)

  1. Note: Percentages may not total to 100% due to rounding.
  2. Abbreviations: EMS, emergency medical services
  3. aIdentification based on any symptom, impression, or procedure documented. Each EMS activation could be included under multiple categories (e.g., out-of-hospital delivery with post-partum hemorrhage). Multiple gestation delivery and nuchal cord were also examined but not presented due to being <10 events each