At this point, the EP sonographer will approach the patient regarding the study. If the patient agrees to participate, the EP sonographer will obtain informed consent. Of note, the patient's treatment is unchanged, regardless of whether or not he/she consents to participation in the study. The POC US will be obtained in either case, as this is standard clinical practice in the ED. Agreeing to participate will simply allow the study team to collect data and review their chart upon discharge from the hospital. The study sonographer will obtain consent.