Department of Biomedical and NeuroMotor Sciences (DIBINEM), Alma Mater Studiorum-University of Bologna, Bologna, Italy.
IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy.
Mov Disord Clin Pract. 2024 Jun;11(6):698-703. doi: 10.1002/mdc3.14060. Epub 2024 May 2.
Blood pressure control in Parkinson's disease (PD) under subthalamic deep brain stimulation (STN-DBS) is influenced by several intertwined aspects, including autonomic failure and levodopa treatment.
To evaluate the effect of chronic STN-DBS, levodopa, and their combination on cardiovascular autonomic functions in PD.
We performed cardiovascular reflex tests (CRTs) before and 6-months after STN-DBS surgery in 20 PD patients (pre-DBS vs. post-DBS). CRTs were executed without and with medication (med-OFF vs. med-ON).
CRT results and occurrence of neurogenic orthostatic hypotension (OH) did not differ between pre- and post-DBS studies in med-OFF condition. After levodopa intake, the BP decrease during HUTT was significantly greater compared to med-OFF, both at pre-DBS and post-DBS evaluation. Levodopa-induced OH was documented in 25% and 5% of patients in pre-DBS/med-ON and post-DBS/med-ON study.
Chronic stimulation did not influence cardiovascular responses, while levodopa exerts a relevant hypotensive effect. The proportion of patients presenting levodopa-induced OH decreases after STN-DBS surgery.
在丘脑底核深部脑刺激(STN-DBS)下,帕金森病(PD)的血压控制受到多个相互交织的方面的影响,包括自主神经衰竭和左旋多巴治疗。
评估慢性 STN-DBS、左旋多巴及其联合治疗对 PD 患者心血管自主功能的影响。
我们对 20 名 PD 患者在 STN-DBS 手术前(术前)和 6 个月后(术后)进行了心血管反射测试(CRT)。CRTs 在不服用药物(med-OFF)和服用药物(med-ON)两种情况下进行。
med-OFF 条件下,CRT 结果和神经源性直立性低血压(OH)的发生在术前和术后研究中没有差异。与 med-OFF 相比,左旋多巴摄入后,HUTT 期间的血压下降在术前和术后评估中均显著更大。在术前/med-ON 和术后/med-ON 研究中,分别有 25%和 5%的患者出现了左旋多巴诱导的 OH。
慢性刺激不会影响心血管反应,而左旋多巴则产生明显的降压作用。STN-DBS 手术后,出现左旋多巴诱导的 OH 的患者比例下降。