Clinical Validation of Quality Improvements Using the Six Sigma Concept: A Case Study for Deep Brain Stimulation in Parkinson's Disease.
Deep brain stimulation
Parkinson’s disease
Quality improvement
Quality measurement
Six Sigma
Journal
Stereotactic and functional neurosurgery
ISSN: 1423-0372
Titre abrégé: Stereotact Funct Neurosurg
Pays: Switzerland
ID NLM: 8902881
Informations de publication
Date de publication:
2019
2019
Historique:
received:
16
05
2019
accepted:
08
08
2019
pubmed:
26
9
2019
medline:
12
2
2020
entrez:
26
9
2019
Statut:
ppublish
Résumé
The Six Sigma concept allows for the evaluation of quality changes after the implementation of new technical equipment or adjustment of perioperative procedures. Exemplarily, we applied this method for quality assessment in deep brain stimulation surgery (DBS) for Parkinson's disease. The medical procedure and possible errors were registered. Then, 6 critical-to-quality characteristics regarding clinical outcome, surgical precision, and the surgical process were measured. The surgical procedure was then optimized in 2 steps, and its measurement, along with the analysis, was repeated twice. By optimizing perioperative settings, the operation time could be reduced, and the precision of the lead placement could be increased. Clinical outcome, as measured by improvement in UPDRS-III, IV, and reduction of medication could also be improved with smaller required stimulation voltage. With directional leads considerable reduction of medication was achieved in 97% of patients (σ-value 3.39) compared to 83.7% (σ-value 2.53) with nondirectional leads. This study shows that the Six Sigma concept is a suitable quality tool to analyze and improve treatment quality of complex medical procedures such as lead positioning in DBS surgery in clinical routine. Our results suggest that directional leads in subthalamic nucleus DBS may have a favorable impact on patients' outcome.
Sections du résumé
BACKGROUND
The Six Sigma concept allows for the evaluation of quality changes after the implementation of new technical equipment or adjustment of perioperative procedures. Exemplarily, we applied this method for quality assessment in deep brain stimulation surgery (DBS) for Parkinson's disease.
METHODS
The medical procedure and possible errors were registered. Then, 6 critical-to-quality characteristics regarding clinical outcome, surgical precision, and the surgical process were measured. The surgical procedure was then optimized in 2 steps, and its measurement, along with the analysis, was repeated twice.
RESULTS
By optimizing perioperative settings, the operation time could be reduced, and the precision of the lead placement could be increased. Clinical outcome, as measured by improvement in UPDRS-III, IV, and reduction of medication could also be improved with smaller required stimulation voltage. With directional leads considerable reduction of medication was achieved in 97% of patients (σ-value 3.39) compared to 83.7% (σ-value 2.53) with nondirectional leads.
CONCLUSION
This study shows that the Six Sigma concept is a suitable quality tool to analyze and improve treatment quality of complex medical procedures such as lead positioning in DBS surgery in clinical routine. Our results suggest that directional leads in subthalamic nucleus DBS may have a favorable impact on patients' outcome.
Identifiants
pubmed: 31553992
pii: 000502654
doi: 10.1159/000502654
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
195-201Informations de copyright
© 2019 S. Karger AG, Basel.