VAI TRÒ CỦA ĐIỆN SINH LÝ THẦN KINH TRONG TIÊN LƯỢNG PHỤC HỒI CHỨC NĂNG VẬN ĐỘNG LIỆT DÂY THẦN KINH VII NGOẠI BIÊN VÔ CĂN GIAI ĐOẠN CẤP

Abstract

Objective: Analyzing the role of nerve electrophysiology in the prediction of the recovery of motor function in acute idiopathic peripheral facial palsy. Research method: A prospective cross-sectional description of 57 patients with acute idiopathic peripheral facial palsy at the Central Acupuncture Hospital. Results: The average age of onset was 30.7 ± 13.6 years; the age group 20–39 accounts for 52.6%. The percentage of facial nerve degeneration at the onset stage increased according to the degree of severity in the House Brackmann clinical grading (14.94 ± 8.31 degrees II compared to 59.9 ± 6.91 degrees VI). The motor latency of the facial nerve on the affected side at the onset stage was 3.3 ± 0.5ms higher than compared to 2.9 ± 0.43ms on the normal side (p<0,05). Response R1 of Blink reflex is abnormal in all cases (27 cases of total loss; 30 cases of prolonged R1 latency). After 30 days of treatment, the complete recovery rate was 67.4% in the group with facial nerve degeneration at the onset stage <50%, compared to 14.3% in the group ≥50%. The complete recovery group also had a shorter average distal latency at the onset stage than the non-complete recovery group. Patients who still had the blink reflex in the initial phase had a complete recovery rate after 30 days, reaching 76.7%, compared to the group losing the blink reflex, which reached 29.6%. Conclusion: In the acute phase, patients with a idiopathic peripheral VII nerve degeneration rate < 50% and the Blink reflex have a better recovery rate after 30 days