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:::::Pain Physician:::::
 
Past Issue - March 2009 - Vol 12 Issue 2 Index | Previous | Next | 
2009;12;345-360. Systematic Review of Intrathecal Infusion Systems for Long-Term Management of Chronic Non-Cancer Pain
Systematic Review
Vikram B. Patel, MD, Laxmaiah Manchikanti, MD, Vijay Singh, MD, David M. Schultz, MD, Salim M. Hayek, MD, PhD, and Howard S. Smith, MD
 

BACKGROUND: Disability, societal, and health impact of chronic intractable pain secondary to various failed therapies is a major issue. As advanced therapy, implantable therapies, which include intrathecal devices and spinal cord stimulation systems, are frequently used in managing chronic intractable pain. Thus, continuous infusion of intrathecal medication is one of the methods used for the control of chronic, refractory, cancer, and non-cancer pain. However, despite the high costs of chronic non-cancer pain, it has been claimed that there is a lack of evidence for intrathecal infusion systems and the cost effectiveness of these systems has been questioned in improving pain and function.

STUDY DESIGN: A systematic review of intrathecal infusion devices for chronic non-cancer pain.

OBJECTIVE: To determine the efficacy, utilization, safety, and complications associated with the use of intrathecal infusion devices for long-term management of chronic non-cancer pain.

METHODS: Literature search was performed through EMBASE, Medline, Cochrane databases, and systematic reviews identified from 1966 to December 2008. Studies were then reviewed and assessed using the Agency for Healthcare Research and Quality (AHRQ) criteria for observational studies and the Cochrane Musculoskeletal Review Group criteria for randomized trials.

The level of evidence was determined using 5 levels of evidence, ranging from Level I to III with 3 subcategories in Level II, based on the quality of evidence developed by the U.S. Preventive Services Task Force (USPSTF).

OUTCOME MEASURES: The primary outcome measure was pain relief (short-term relief </= one-year and long-term > one-year). Secondary outcome measures of improvement in functional status, psychological status, return to work, and reduction in opioid intake were also utilized.

RESULTS: The level of evidence for intrathecal infusion systems indicated either Level II-3 or Level III (limited) based on U.S. Preventive Services Task Force (USPSTF) criteria. 

LIMITATIONS: The limitations of this study include the paucity of literature, lack of quality evidence, and lack of randomized trials.

CONCLUSION: This systematic review illustrates Level II-3 or Level III (limited) evidence for intrathecal infusion systems for long-term relief in chronic non-cancer pain.

 

   
 
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Authors
Laxmaiah Manchikanti
Vijay Singh
David M. Schultz
Vikram B. Patel
Salim M. Hayek
Howard S. Smith


Keywords
Intrathecal infusion
intraspinal infusion
programmable infusion systems
spinal infusion
intra-spinal infusion devices
baclofen infusion
intrathecal opiates