Indications Evaluation of injury, hypotension, and / or shock of unknown etiology in a trauma patient to determine need for interventions Evaluation of unexplained hypotension or shock in the non-trauma patient To identify rupture of an ectopic pregnancy Contraindications Absolute contraindications Clear need for time-sensitive definitive care (which would be delayed by doing ultrasonography) Relative contraindications None Complications Ultrasonography is a noninvasive procedure, thus procedural complications are unlikely.