CClinicalTrials.gg
CompletedNCT01953718Updated Oct 10, 2013

A Retrospective Study of the Effects of Different Parameters on Motor Symptoms of PD in Bilateral STN Stimulation

An observational study in Parkinson's Disease, sponsored by First Affiliated Hospital, Sun Yat-Sen University. Completed at 1 site in China. Open to participants aged 40 Years to 75 Years. Per ClinicalTrials.gov, last updated 2013-10-10.

Sponsored by First Affiliated Hospital, Sun Yat-Sen University · Observational

Study type
Observational
Model
Case-only
Time perspective
Retrospective
Enrollment
27
Ages
40 Years to 75 Years
Sex
All
01

Study summary

The purpose of this study is to assess the impact of different parameters (voltage, pulse width, frequency) of subthalamic nucleus (STN) deep brain stimulation (DBS) on motor symptoms in patients with Parkinson's disease (PD).

Read the detailed description

In this observational study, we will retrospectively analyze the one-year follow-up data of 27 PD patients who received bilateral STN DBS in the First Affiliated Hospital of Sun Yat-sen University in the years 2008-2012. The data, including parameter settings and severity of motor symptoms indicated by Unified Parkinson's Disease Rating Scale (UPDRS) Part III scores, was collected during the patients' annual visit to the hospital for reprogramming. A correlation analysis will be conducted to investigate the relationship between change of a specific parameter and the subsequent change of motor scores.

02

Conditions studied

  • Parkinson's Disease

Browse trials for

03

In context

Parkinson Disease

4,487 studies on the registry are indexed under Parkinson Disease; 1,082 are open to participants now.

This study's enrollment of 27 is below the median of 96 across 1,057 observational studies indexed under Parkinson Disease.

Browse Parkinson Disease studies →

Lead sponsor

First Affiliated Hospital, Sun Yat-Sen University is the lead sponsor of 155 studies on the registry; 51 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

PD patients who received bilateral STN DBS in the First Affiliated Hospital of Sun Yat-sen University

Inclusion criteria

  • PD patients treated with bilateral STN DBS in the First Affiliated Hospital in the years 2008-2012

Exclusion criteria

Exclusion Criteria:

  • Simultaneous participation in another clinical trial
  • Dementia (Mini Mental State Examination \< 26)
  • Removal of DBS electrodes
  • Loss to follow-up
05

Study design

Observational model
Case-only
Time perspective
Retrospective
Enrollment
27 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Change of parameters (voltage, pulse width, frequency) during follow-up

    Time frame: at 12 months

  2. Change of UPDRS Part III score and the relation to parameters

    Time frame: at 12 months

  3. Changes of tremor, rigidity, bradykinesia and postural stability scores evaluated by UPDRS Part III and the relation to parameters

    Time frame: at 12 months

Secondary outcomes

  1. Change of daily levodopa equivalent dosage (LED) during follow-up

    Time frame: at 12 months

07

Study locations

1 site
  • First Affiliated Hospital, Sun Yat-sen University
    Guangzhou, Guangdong 510080, China
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 10, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01953718
Lead sponsor
First Affiliated Hospital, Sun Yat-Sen University
Responsible party
Chen Ling (MD,PhD, First Affiliated Hospital, Sun Yat-Sen University) — Principal investigator
First posted
Oct 1, 2013
Start date
Jul 2013
Primary completion
Oct 2013
Completion
Oct 2013
Last update
Oct 10, 2013
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2013. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion