Tremor Is Highly Responsive to Levodopa in Advanced Parkinson's Disease.

Background: Tremor in Parkinson's disease (PD) is commonly regarded as less responsive to levodopa than bradykinesia and rigidity, with levodopa-resistant PD tremor considered relatively common.

Objective: The aim was to assess the levodopa responsiveness of tremor, bradykinesia, and rigidity in a population with advanced PD.

Methods: We performed a retrospective study of 526 people with PD screened for deep brain stimulation.

Impact of Preoperative Cognition on Motor Improvement in Bilateral Subthalamic Nucleus-Deep Brain Stimulation for Parkinson's Disease.

Objective: This study aimed to assess the influence of preoperative cognition on postoperative motor and nonmotor outcomes in patients with Parkinson disease (PD) after deep brain stimulation (DBS).

Materials And Methods: A retrospective study was performed in subjects with PD with bilateral subthalamic DBS. Preoperative cognition was indexed by Parkinson's Disease-Cognitive Rating Scale (PD-CRS) and global neuropsychological evaluation (NPE) scores.

Surgical Complications in Subthalamic Nucleus Deep Brain Stimulation for Parkinson's Disease: Experience in 800 Patients.

Introduction: We present our surgical complications resulting in neurological deficit or additional surgery during 25 years of DBS of the subthalamic nucleus (STN) for Parkinson's disease (PD).

Methods: We conducted a retrospective chart review of all PD patients that received STN DBS in our DBS center between 1998 and 2023. Outcomes were complications resulting in neurological deficit or additional surgery.