Abstract: Objective To investigate the effect of ginkgo biloba extract combined with ear acupoint pressing pills on posterior circulation ischemic dizziness. Methods Selected 80 cases of patients with posterior circulation ischemic dizziness in Qingyang People's Hospital from January 2022 to December 2022, divided into two groups randomly. The control group was treated with Ginkgo biloba extract, while the observation group was treated with Ginkgo biloba extract combined with ear acupoint pressing pills. Evaluate the symptom scores of both groups, detect critical pressure (CP), pulse wave number (Wv), minimum blood flow (Qmin), dynamic impedance (DR), cerebrovascular peripheral resistance (R), and carotid minimum blood flow velocity (Vmin). Serum levels of Nitric oxide synthase (NOS), Platelet-derived growth factor BB (PDGF-BB) were measured. Results Before treatment, there was no significant difference in the scores of dizziness, head and body fatigue, standing instability, and dizziness between the two groups (P>0.05). After treatment, the scores of dizziness, head and body fatigue, standing instability, and dizziness in the two groups were significantly reduced, and the scores of dizziness, head and body fatigue, standing instability, and dizziness in the observation group were lower (P<0.05). Before treatment, there was no significant difference in CP, Wv, Qmin, DR, R, and Vmin between the two groups (P>0.05). After treatment, the CP, Wv, Qmin, DR, R, and Vmin of the two groups were significantly improved, and the CP, Wv, Qmin, DR, R, and Vmin of the observation group were significantly better (P<0.05). Before treatment, there was no significant difference in the levels of PDGF-BB, and NOS between the two groups (P>0.05). After treatment, the levels of PDGF-BB, and NOS in both groups were significantly reduced, and the levels of PDGF-BB, and NOS in the observation group were lower (P<0.05). Conclusion Ginkgo biloba extract combined with ear acupoint pressing pills has significant therapeutic effects on posterior circulation ischemic dizziness, can significantly alleviate symptoms, improve cerebral hemodynamics.

Key words: ginkgo biloba extract, ear acupoint pressing pills, ischemic dizziness in the posterior circulation