Emergency Department (ED) Bedside UltraSound & Satisfaction Trial (BUSS Trial): A Randomised Controlled Trial of Bedside Echocardiogram in patients with ‘low risk’ chest pain in the ED.

The primary outcome measure is a patient satisfaction survey regarding their treatment/stay in ED. Patients with low-risk chest pain will undergo standard assessment. This can include doctor’s assessment, blood tests including cardiac markers such as two troponin blood tests, xrays and CT scans. If the patient has been deemed as ‘low risk’ chest pain (i.e their troponin result is negative and/or other tests are negative) and are likely to be discharged, then they are usually admitted to ED Short stay area while awaiting the repeat troponin blood test in 2 hour’s time. During the 2 hour period while patients are awaiting their repeat troponin eligible participants will be randomised to the intervention and control groups. The intervention group will undergo a single bedside cardiac ultrasound performed by an Emergency Physician trained in cardiac ultrasound or ED registrar with supervision by Emergency Physician. The ultrasound scan will be performed using Phillips Sparq Ultrasound Machine (Phased array probe) or similar point-of-care ultrasound device, and be performed using a documented protocol. Fidelity to the intervention will be monitored on review of each of the patient scans. Both intervention and control groups will complete a satisfaction/feedback surveys prior to final discharge .