The patient is a 56 y/o female who presents with sudden onset substernal chest pain associated with dyspnea and some diaphoresis. Vitals stable. An initial ECG was obtained. Cardiology was emergently consulted, but there was some suspicion that the ECG changes noted were merely J-Point elevation. A bedside echocardiogram was subsequently performed:
17 yr old male presents with hand pain after striking a stationary hard surface with a closed fist. X-ray below. Which ultrasound guided nerve block would facilitate manual reduction of fracture?