Pain physician
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Randomized Controlled Trial
The effectiveness of fluoroscopic cervical interlaminar epidural injections in managing chronic cervical disc herniation and radiculitis: preliminary results of a randomized, double-blind, controlled trial.
Chronic neck pain is a common problem in the adult population with a typical 12-month prevalence of 30% to 50%. Cervical disc herniation and radiculitis is one of the common conditions described responsible for chronic neck and upper extremity pain. Cervical epidural injections for managing chronic neck pain with disc herniation are one of the commonly performed non-surgical interventions in the United States. However, the literature supporting cervical interlaminar epidural steroids in managing chronic neck pain is scant. ⋯ Cervical interlaminar epidural injections with local anesthetic with or without steroids might be effective in 77% of patients with chronic function-limiting neck pain and upper extremity pain secondary to cervical disc herniation and radiculitis.
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Randomized Controlled Trial Multicenter Study
Efficacy of intrathecal midazolam with or without epidural methylprednisolone for management of post-herpetic neuralgia involving lumbosacral dermatomes.
Post herpetic neuralgia is a chronic neuropathic pain syndrome which remains one of the most difficult pain disorders to treat. Epidural injection of methylprednisolone with or without local anesthetic provides relief for neuralgia for a short duration only. Recent studies have shown a promising anti nociceptive effect for intrathecal midazolam, a water soluble benzodiazepine, due to its interaction with benzodiazepine-GABA-A receptor complex within the spinal cord. ⋯ The dose-response relationship of intrathecal midazolam was not evaluated in our study, so further study should be conducted with different doses of intrathecal midazolam for management of PHN.
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Review Case Reports
Root cause analysis of paraplegia following transforaminal epidural steroid injections: the 'unsafe' triangle.
The utilization rate of transforaminal epidural steroid injections (TFESIs), an elective diagnostic and therapeutic spinal procedure, has risen dramatically over the past decade. In 2006 alone, greater than 300,000 thoracolumbar TFESIs were performed on Medicare beneficiaries. Despite the purported superiority of the transforaminal route, compared to other modes of epidural injection, TFESIs are associated with potential hazards. ⋯ Injury to the ARM can lead to paraplegia, independent of operator skill or adjuvant safety initiatives (digital subtraction angiography, local anesthetic test dose). Injury to the ARM is a "black swan" event. The authors believe that catastrophic injury may be averted when performing TFESIs by avoiding the "un-safe," superoanterior triangle in the foramen and that transforaminal injections should be performed at the inferior aspect of the foramen, known as Kambin's triangle.
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Practice Guideline
Consensus guidelines for the selection and implantation of patients with noncancer pain for intrathecal drug delivery.
Intrathecal therapy offers an invasive alternative for the long-term management of select patients with intractable pain associated with various disease states, including those of noncancer origin. It is commonly accepted that proper patient selection is essential to optimizing treatment outcomes, yet the practice of candidate selection for device implantation varies widely. A multifaceted approach--with consideration of preexisting medical comorbidities; psychological status; associated social, technical, and economic issues; and response to intrathecal trialing--enables practitioners to fully evaluate the appropriateness of implanting a patient with an intrathecal drug delivery system. ⋯ Using experience- and knowledge-based expert opinion to systematically evaluate the available evidence, this article provides consensus guidelines aimed at optimizing the selection of patients with noncancer pain for intrathecal therapy. In conclusion, complete assessment of a patient's physical, psychological, and social characteristics, can guide practitioners in determining the appropriateness of initiating intrathecal therapy. These consensus guidelines are intended to assist with weighing this risk/benefit ratio of intrathecal therapy, thereby minimizing the potential for treatment failure, unacceptable adverse effects, and excess mortality.
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Postdural puncture headache (PDPH) is a known complication of diagnostic lumbar puncture. Multiple factors including needle size, type, and needle bevel orientation, have been postulated to contribute to the development of PDPH. The presentation of PDPH tends to have classic symptoms that include a postural headache, nausea, vomiting, tinnitus, and ocular disturbances. Conservative treatment measures include bed rest, intravenous hydration or caffeine, and analgesics. Resistant cases might require an epidural blood patch (EBP). Though complications are rare, cases of immediate post-procedural pain and subdural epidural hematoma have been reported. Here we present a case of PDPH treated with sequential EBPs that resulted in delayed radicular pain. ⋯ Although EBP is typically a safe procedure, complications might occur. An inflammatory response, secondary to the injection of blood, or mechanical compression, due to the total volume of blood injection, are highlighted as possible causative agents in the development of this complication. The role of fluoroscopic imaging, particularly in patients who have failed an initial EBP, must also be examined. Given the rates of false loss of resistance (17-30%) reported in the literature, the use of real-time imaging to ensure proper needle placement and subsequent injectate spread should be considered.