Prevalence of Trauma-Induced Hypocalcemia in the Prehospital Setting.

Background: Recent data published by the Special Operations community suggest the Lethal Triad of Trauma should be changed to the Lethal Diamond, to include coagulopathy, acidosis, hypothermia, and hypocalcemia. The purpose of this study is to determine the prevalence of trauma-induced hypocalcemia in level I and II trauma patients.

Methods: This is a retrospective cohort study conducted at a level I trauma center and Special Operations Combat Medic (SOCM) training site.

Detecting fetal macrosomia with abdominal circumference alone.

Objective: To determine if abdominal circumference (AC) can identify macrosomia (> or = 4,000 g) at or beyond 37 weeks.

Study Design: Prospectively, parturients at term admitted for delivery underwent sonographic mensuration of AC. A receiver-operating characteristic (ROC) curve was constructed to determine if AC can differentiate between normal (birth weight < 3,999 g) and macrosomia.