title: Effects of movement and postural positions in spinal cord stimulation in the new rechargeable systems.
abstract: BACKGROUND
  Despite recent developments in implantable neurostimulation devices, the adjustment of stimulation levels to the patient's postural changes has remained a problem so far.
  
  
  OBJECTIVE
  This study was conducted with the newest rechargeable devices, in order to compare its results with the ones published from conventional systems.
  
  
  METHODS
  It is a prospective study.
  
  
  METHODS
  In 46 patients implanted with rechargeable constant current stimulation systems we measured impedance, stimulation thresholds, therapeutic range, as well patients' satisfaction and sensation in 7 different body postures.
  
  
  RESULTS
  Data analysis was performed in 46 patients, whose most frequent pathologies were failed back surgery syndrome (FBSS) and complex regional pain syndrome (CRPS). The lowest amplitude needed to reach the different thresholds was always scored in the supine decubitus position, with no significant changes in the therapeutic range and impedance. For all stimulation thresholds, there is always a difference between the supine position and all other postures. No statistically significant differences with regard to patients' satisfaction and sensation were found for the different postures.
  
  
  CONCLUSIONS
  Sample sample size.
  
  
  CONCLUSIONS
  The findings of the present work are similar to those described in previous publications that showed the relationship between postural changes and several stimulation thresholds and pulse energy. The posture which requires lower energy - and whose corresponding therapeutic range (TR) is narrower--is supine decubitus.
authors: Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain; and Hospital Universitario Quir-n, Madrid.Spain.
authors: David
authors: D
authors: Abejon
authors: Pablo
authors: P
authors: Rueda
authors: Elba
authors: E
authors: Parodi
authors: Javier
authors: J
authors: Del Saz
mesh_terms: D000328:Adult; D020918:Complex Regional Pain Syndromes / Q000628:therapy*; D055111:Failed Back Surgery Syndrome / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture; D011446:Prospective Studies; D062187:Spinal Cord Stimulation / Q000009:adverse effects / Q000295:instrumentation