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The Use of Point-of-Care Ultrasound to Accurately Measure Cardiac Output in Flight.
Air Medical Journal 2020
Cardiac point-of-care ultrasound (POCUS) is a quick and accurate tool to assess a patient's cardiovascular and hemodynamic status by measuring the E-point septal separation (EPSS) and left ventricular ejection fraction. The case presented here highlights the potential for increased use of POCUS to guide resuscitation in the prehospital setting and during critical care transport. A 56-year-old male presented to a rural emergency department with chest pain and was found to have an inferior STelevation myocardial infarction (STEMI). Local helicopter air ambulance was called to transport the patient to a facility capable of cardiac catheterization. In route, the flight physician performed a cardiac POCUS exam which revealed decreased cardiac perfusion, a hypokinetic inferior wall, and overall decreased contractility. EPSS was measured at 0.77cm, indicating moderate left ventricular ejection fraction (LVEF) reduction. A cardiac left ventriculogram later confirmed a 40% ejection fraction as well as wall motion abnormalities of the inferior wall. The patient was found to have 100% occlusion of the right coronary artery that was revascularized with balloon angioplasty and a drug-eluting stent. He ultimately did well and was discharged home.
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