ĐẶC ĐIỂM RUN GHI BẰNG GIA TỐC KẾ VÀ ĐIỆN CƠ BỀ MẶT Ở NGƯỜI BỆNH RUN VÔ CĂN TẠI BỆNH VIỆN ĐẠI HỌC Y HÀ NỘI

Abstract

Introduction: Essential Tremor (ET) is one of the most common movement disorders, characterized by tremor of both hands during posture maintenance or voluntary movement. However, diagnosing ET in clinical practice remains challenging, as it primarily relies on the clinician’s experience. Quantitative tremor assessment methods have not been widely implemented, particularly in Vietnam. The combination of accelerometer and surface electromyography (sEMG) is a novel approach that can provide objective and quantitative information on tremor characteristics, thereby improving diagnostic accuracy and supporting treatment. Objective: To describe the tremor characteristics recorded using accelerometer combined with surface electromyography in patients with essential tremor at Hanoi Medical University Hospital. Methods: A cross-sectional descriptive study was conducted on 31 patients with a confirmed diagnosis of essential tremor at the Neurology Clinic, Hanoi Medical University Hospital, from January 2025 to June 2025. Tremor characteristics were recorded using accelerometer combined with surface electromyography under three conditions: resting, posture maintenance, and weight loading. Results: Essential tremor predominantly occurred during voluntary movement or posture maintenance, and was less frequent at rest. The recorded tremor frequency ranged from 6 to 9 Hz. The muscle activation pattern in ET demonstrated high synchrony between agonist and antagonist muscle groups, with tremor frequency decreasing with age. Conclusion: Tremor assessment using accelerometer combined with surface electromyography provides valuable quantitative information that may enhance the diagnosis of essential tremor.