Pain physician
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Randomized Controlled Trial Multicenter Study
Dose conversion between tapentadol immediate and extended release for low back pain.
Tapentadol, a novel, centrally acting analgesic with 2 mechanisms of action (mu-opioid receptor agonism and norepinephrine reuptake inhibition), has been developed in an immediate-release (IR) and an extended-release (ER) formulation. Determination of the safety and equianalgesic ratios for conversion between formulations is important for physicians with patients taking tapentadol IR who may want to switch to tapentadol ER, or vice versa, for any reason. ⋯ NCT00594516.
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Review Comparative Study
Considerations and methodology for trialing ziconotide.
Before long-term intrathecal analgesic therapy is initiated, patients often undergo a spinal analgesia trial. Ziconotide is a nonopioid intrathecal analgesic used to manage severe chronic pain, and a variety of methods have been used to trial ziconotide. ⋯ All 3 methods of ziconotide trialing appear to be viable options, and no method can be considered superior on the basis of the evidence presented in this review. Controlled studies comparing ziconotide trialing methods may be warranted.
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Comparative Study Clinical Trial
Protocol for accuracy of point of care (POC) or in-office urine drug testing (immunoassay) in chronic pain patients: a prospective analysis of immunoassay and liquid chromatography tandem mass spectometry (LC/MS/MS).
Therapeutic use, overuse, abuse, and diversion of controlled substances in managing chronic non-cancer pain continues to be an issue for physicians and patients. It has been stated that physicians, along with the public and federal, state, and local government; professional associations; and pharmaceutical companies all share responsibility for preventing abuse of controlled prescription drugs. The challenge is to eliminate or significantly curtail abuse of controlled prescription drugs while still assuring the proper treatment of those patients. A number of techniques, instruments, and tools have been described to monitor controlled substance use and abuse. Thus, multiple techniques and tools available for adherence monitoring include urine drug testing in conjunction with prescription monitoring programs and other screening tests. However, urine drug testing is associated with multiple methodological flaws. Multiple authors have provided conflicting results in relation to diagnostic accuracy with differing opinions about how to monitor adherence in a non-systematic fashion. Thus far, there have not been any studies systematically assessing the diagnostic accuracy of immunoassay with laboratory testing. ⋯ NCT 01052155.
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Review
Facts, fallacies, and politics of comparative effectiveness research: Part I. Basic considerations.
While the United States leads the world in many measures of health care innovation, it has been suggested that it lags behind many developed nations in a variety of health outcomes. It has also been stated that the United States continues to outspend all other Organisation for Economic Co-operation and Development (OECD) countries by a wide margin. Spending on health goods and services per person in the United States, in 2007, increased to $7,290 - almost 2(1/2) times the average of all OECD countries. ⋯ Of all the available agencies, the National Institute for Health and Clinical Excellence (NICE) of the United Kingdom is the most advanced, stable, and has provided significant evidence, though based on rigid and proscriptive economic and clinical formulas. While CER is making a rapid surge in the United States, supporters and opponents are expressing their views. Part I of this comprehensive review will describe facts, fallacies, and politics of CER with discussions to understand basic concepts of CER.
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Comparative Study
Comparison of clonazepam compliance by measurement of urinary concentration by immunoassay and LC-MS/MS in pain management population.
Physicians determine patient compliance with their medications by use of urine drug testing. It is known that measurement of benzodiazepines is limited by immunoassay specificity and cutoff limits and therefore does not offer physicians an accurate picture of their patients' compliance with these medications. A few studies have used lower cutoffs to demonstrate patient compliance. ⋯ The difference in positivity rate between the immunoassay and the LC-MS/MS result showed that the nominal 200 ng/mL cutoff of the immunoassay did not apply to 7-aminoclonazepam. This low immunoassay positivity rate is inconsistent with the manufacturer's published cross reactivity data for clonazepam and 7-aminoclonazepam. These data illustrate the limitations of using a 200 ng/mL cutoff to monitor clonazepam compliance and suggest that a cutoff of 40 ng/mL or less is needed to reliably monitor use of this drug.