Ungprasert, P., Ungprasert, C. and Khurirang, J. 2026. Efficacy and Safety of Two Doses of Local Anesthetic for Transesophageal Echocardiography Preparation in Cardiovascular Patients: A Single-Center Randomized Controlled Trial at Queen Sirikit Heart Center, Khon Kaen University. Srinagarind Medical Journal. 41, 4 (Aug. 2026), 491–500. DOI:https://doi.org/10.64960/srimedj.v41i4.271158.