viernes, 1 de abril de 2011

Inyección epidural simple para radiculopatías cervicales y lumbosacras: estudio preliminar


Inyección epidural simple para radiculopatías cervicales y lumbosacras: estudio preliminar
Single shot epidural injection for cervical and lumbosaccral radiculopathies: a preliminary study.
Nawani DP, Agrawal S, Asthana V.
The Pain Clinic, Doon Nursing Home, Swami Ram Nagar, Dehradun, India.
Korean J Pain. 2010 Dec;23(4):254-7. Epub 2010 Dec 1.
Abstract
BACKGROUND: Epidural steroid injection is an established treatment modality for intervertebral disc prolapse leading to radiculopathy. In cases where two levels of radiculopathy are present, two separate injections are warranted. Herein, we present our experience of management of such cases with a single epidural injection of local anaesthetic, tramadol and methylprednisolone, and table tilt for management of both radiculopathies. METHODS: 50 patients of either sex aged between 35-65 years presenting with features of cervical and lumbar radiculopathic pain were included and were subjected to single lumbar epidural injection of local anaesthetic, tramadol and methylprednisolone, in the lateral position. The table was then tilted in the trendelberg position with a tilt of 25 degrees, and patients were maintained for 10 minutes before being turned supine. All patients were administered 3 such injections with an interval of 2 weeks between subsequent injections, and pain relief was assessed with a visual analogue scale. Immediate complications after the block were assessed. RESULTS: Immediate and post procedural complications observed were nausea and vomiting (20%), painful injection site (4%), hypotension (10%) and high block (4%). Pain relief was assessed after the three injections by three grades: 37 (74%) had complete resolution of symptoms; 18% had partial relief and 8% did not benefit from the procedure. CONCLUSIONS: This technique may be used as an alternative technique for pain relief in patients with unilateral cervical and lumbar radiculopathies

Resultados a un año de un estudio randomizado, doble ciego, activo, controlado de inyecciones caudales con fluoroscopía con o sin esteroides en el tratamiento de dolor lumbar crónico discogénico sin hernia de disco o radiculitis.
One-Year Results of a Randomized, Double-Blind, Active Controlled Trial of Fluoroscopic Caudal Epidural Injections With or Without Steroids in Managing Chronic Discogenic Low Back Pain Without Disc Herniation or Radiculitis.
Laxmaiah Manchikanti, MD, Kimberly A. Cash, RT, Carla D. McManus, RN, BSN, Vidyasagar Pampati, MSc, and Howard S. Smith, MD
Pain Physician 2011; 14:25-36 · ISSN 1533-3159

BACKGROUND: Lumbar radicular pain pathophysiology continues to be the subject of research and debate as discogenic pain is increasingly seen as a cause of non-specific low back pain. Among non-surgical methods used to manage chronic low back pain with or without disc herniation, epidural injections are one of the most common modalities. However, there is little evidence utilizing contemporary methodology for using epidural injections in patients with discogenic pain. STUDY DESIGN: A randomized, double-blind, active-controlled trial. SETTING: An interventional pain management practice, a specialty referral center, a private practice setting in the United States. OBJECTIVES: To evaluate the effectiveness of caudal epidural injections with local anesthetic, with or without steroids, in managing chronic low back pain without disc herniation or radiculitis. METHODS: A total of 120 patients were assigned to one of 2 groups. Group I patients received caudal epidural injections with local anesthetic (lidocaine 0.5% 10 mL); Group II patients received caudal epidural injections with 9 mL of 0.5% lidocaine mixed with 1 mL of steroid (either brand name or non-particulate betamethasone [6 mg] or methylprednisolone [40 mg]). Computer-generated randomization and random allocation sequence by simple randomization were the randomization techniques utilized.
OUTCOMES ASSESSMENT: Multiple outcome measures were utilized which included the Numeric Rating Scale (NRS), the Oswestry Disability Index 2.0 (ODI), employment status, functional status, and opioid intake at 3, 6, and 12 months post treatment.  Significant pain relief and functional status improvement were described as a 50% or more reduction in scores from baseline. RESULTS: Significant pain relief and functional status improvement were observed in 55% of the patients in Group I and 68% of the patients in Group II. In contrast, 84% of patients in Group I and 85% in Group II saw significant pain relief and functional status improvement in the successful group (62% in Group I and 68% in Group II). The average procedures per year were 3.8 ± 0.9 for Group I and 4.3 ± 0.9 for Group II. Average pain scores decreased from 8.0 ± 0.9 to 4.3 ± 1.79 for Group I and from 7.9 ± 1.0 to 3.8 ± 1.59 for Group II. There were no differences among the patients receiving one of the 3 steroids. LIMITATIONS:  The results of this study are limited by lack of a placebo group. CONCLUSION: Caudal epidural injections with local anesthetic with or without steroids are effective in patients with chronic low back pain of discogenic origin without facet joint pain, disc herniation, and/or radiculitis.
Clinical Trial: NCT00370799

http://www.painphysicianjournal.com/2011/january/2011;14;25-36.pdf  

Inyecciones epidurales  interlaminares  versus transforaminales  para el tratamiento de herniaciones discales intervertebrales lumbares sintomáticas
Interlaminar versus transforaminal epidural injections for the treatment of symptomatic lumbar intervertebral disc herniations.
Schaufele MK, Hatch L, Jones W.
The Emory Spine Center, Emory University School of Medicine, Atlanta, Georgia 30329, USA. michael.schaufele@emoryhealthcare.org
Pain Physician. 2006 Oct;9(4):361-6.
Abstract
BACKGROUND: Epidural steroid injections are commonly used for the treatment of radicular symptoms associated with symptomatic lumbar intervertebral disc herniations. Transforaminal epidural injections are believed to produce better clinical outcomes than interlaminar epidural injections. OBJECTIVE: To determine a difference in short-term pain improvement and longterm surgical rates between interlaminar and transforaminal injection techniques.DESIGN: Case Control Study. METHODS: For each technique, 20 patients were retrospectively identified who received their first fluoroscopically guided epidural steroid injection for radicular symptoms caused by a lumbar intravertebral disc herniation over an 18 months interval. All patients had corresponding MRI findings and failed previous non-invasive therapies. The Verbal Numerical Rating Scale (VNRS, 0-10 scale) before the treatment, within one hour after the treatment and upon follow-up (average 17.1 days) were analyzed, along with the need for repeat injections and surgical interventions over a 1-year follow-up interval. The patient groups were matched for symptom duration, MRI findings and pre-injection VNRS scores. RESULTS: In the transforaminal group, there was a statistically significant improvement in the VNRS scores from before the injection (VNRS mean 5.9) to immediately after the injection (VNRS mean 2.9, p<0.01), and upon follow-up (VNRS mean 3.2, p<0.01, mean 18.7 days). Nine patients (45%) required 1 or 2 repeated injections, 2 patients (10%) underwent surgery. In the interlaminar group, there was a statistically significant improvement in the VNRS scores from before the injection (VNRS mean 7.3) to immediately after the injection (VNRS mean 3.1, p<0.01), and upon follow-up (VNRS mean 5.9, p<0.01, mean 15.6 days). Eight patients (40%) required 1 or 2 repeated injection, 5 patients (25%) underwent surgery. Fourteen patients (70%) had an improvement of 2 points or more on the VNRS scale in the transforaminal group, compared to 9 (45%) in the interlaminar group. CONCLUSIONS: In the current study, transforaminal epidural steroid injections for the treatment of symptomatic lumbar disc herniation resulted in better short-term pain improvement and fewer long-term surgical interventions than interlaminar epidural steroid injection.


Inyecciones cervicales epidurales en dolor discogénico del cuello sin hernia de disco o radiculitis: resultados preliminares de un estudio randomizado, doble ciego y controlado
Cervical Epidural Injections in Chronic Discogenic Neck Pain Without Disc Herniation or Radiculitis: Preliminary Results of a Randomized, Double-Blind, Controlled Trial
Laxmaiah Manchikanti, MD, Kimberly A. Cash, RT, Vidyasagar Pampati, MSc, Bradley W. Wargo, DO, and Yogesh Malla, MD
Pain Physician 2010; 13:E265-E278

 
BACKGROUND: Chronic neck pain is a common problem in the adult population with a typical 12-month prevalence of 30% to 50%. However, there is a lack of consensus regarding the causes and treatments of chronic neck pain. Despite limited evidence, cervical epidural injections are one of the commonly performed non-surgical interventions in the management of chronic neck pain. STUDY DESIGN: A randomized, double-blind, active control trial. SETTING: An interventional pain management practice, a specialty referral center, a private practice setting in the United States. OBJECTIVES: To evaluate the effectiveness of cervical interlaminar epidural injections with local anesthetic with or without steroids in the management of chronic neck pain with or without upper extremity pain in patients without disc herniation or radiculitis or facet joint pain. METHODS: Patients without disc herniation or radiculitis and negative for facet joint pain by means of controlled diagnostic medial branch blocks were randomly assigned to one of 2 groups: injection of local anesthetic only or local anesthetic mixed with non-particulate betamethasone. Seventy patients were included in this analysis. Randomization was performed by computer-generated random allocation sequence by simple randomization. OUTCOMES ASSESSMENT: Multiple outcome measures were utilized including the Numeric Rating Scale (NRS), the Neck Disability Index (NDI), employment status, and opioid intake with assessment at 3, 6, and 12 months post-treatment.  Significant pain relief or functional status was defined as a 50% or more reduction. RESULTS: Significant pain relief (≥ 50%) was demonstrated in 80% of patients in both groups and functional status improvement (> 50%) in 69% of Group I and 80% of Group II. The overall average procedures per year were 3.9 ± 1.01 in Group I and 3.9 ± 0.8 in Group II with an average total relief per year of 40.3 ± 14.1 weeks in Group I and 42.1 ± 9.9 weeks in Group II over a period of 52 weeks in the successful group. LIMITATIONS: The results of this study are limited by the lack of a placebo group and a preliminary report of 70 patients, with 35 patients in each group.
CONCLUSION: Cervical interlaminar epidural injections with local anesthetic with or without steroids may be effective in patients with chronic function-limiting discogenic.
CLINICAL TRIAL: NCT01071369

Atentamente
Anestesiología y Medicina del Dolor

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