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1.
Urology ; 148: 179-184, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33010291

RESUMEN

OBJECTIVE: To investigate the feasibility of erectile function restoration by the genitofemoral nerve to pelvic nerve transfer in rats. METHODS: Thirty-six male rats were included in this study. Rats in the nerve transfer group (n = 12) were subjected to pelvic nerve, sacral roots, and L6 roots transection and then bilateral genitofemoral nerve to pelvic nerve transfer, rats in the nerve resection group (n = 12) were subjected to pelvic nerve, sacral roots, and L6 roots transection without nerve transfer, and rats in the control group (n = 12) served as controls. After reinnervation, intracavernous pressure (ICP) assessment was performed. Fluoro-Gold was injected into the corpus cavernosum. Immediately before euthanasia, transferred nerves were stimulated to test penile intracavernous pressure. The L6, S1, and L1-2 spinal cord segments were used for retrogradely labeled neurons. Regenerative nerve morphologic examination assessment was performed. RESULTS: Genitofemoral nerve stimulation induced an increase in ICP in the nerve transfer group. The mean ICP in this group was (33.8 ± 9.4 mm Hg), which is higher than the mean value in the nerve resection group (3.9 ± 1.0 mm Hg) but lower than that in the control group (69.8 ± 12.2 mm Hg; P < .05). The formation of new neural pathways was confirmed by the appearance of Fluoro-Gold labeled neurons in the L-1 and L-2 spinal cord segments in the nerve transfer group. Regenerative nerve morphologic examination showed good axonal regeneration after genitofemoral nerve transfer. CONCLUSION: Nerve regeneration can be obtained by genitofemoral nerve to pelvic nerve transfer, and erectile function can be restored.


Asunto(s)
Nervio Femoral/cirugía , Transferencia de Nervios/métodos , Pelvis/inervación , Erección Peniana/fisiología , Pene/inervación , Raíces Nerviosas Espinales/cirugía , Animales , Estudios de Factibilidad , Nervio Femoral/anatomía & histología , Nervio Femoral/fisiología , Masculino , Regeneración Nerviosa/fisiología , Presión , Ratas , Recuperación de la Función , Estimulación Eléctrica Transcutánea del Nervio
2.
Curr Opin Urol ; 30(4): 507-512, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32427629

RESUMEN

PURPOSE OF REVIEW: To provide an overview of available electrical stimulation devices in neurogenic patients with lower urinary tract disease. RECENT FINDINGS: It is advocated to do more studies in neurogenic patients as results seem promising and useful but most studies did not include neurogenic patients or neurogenic patients were not analyzed or reported separately. Most studies included a small heterogenous neurogenic group with multiple pathophysiologic origin focusing on effect of a treatment instead of results of a treatment in a specific neurogenic group. Neuromodulation or stimulation has the advantage that it acts on different organs, like bladder and bowel, so can treat neurogenic patients, who mostly suffer from multiple organ failure. SUMMARY: Brindley procedure, sacral neuromodulation (SNM) and posterior tibial nerve stimulation (PTNS) are available for a while already. The Brindley procedure (including sacral anterior root stimulation in combination with a rhizotomy of posterior sacral roots) is developed for selected spinal cord injury patient with a complete spinal injury, and has shown results for many years in neurogenic patients. An alternative to the rhizotomy is not established yet. SNM and PTNS are other modalities that are used in nonneurogenic patients, but are not yet indicated and much studied in neurogenic patients.


Asunto(s)
Terapia por Estimulación Eléctrica/métodos , Rizotomía , Nervio Tibial , Vejiga Urinaria Neurogénica/terapia , Vejiga Urinaria/inervación , Desnervación , Estimulación Eléctrica , Terapia por Estimulación Eléctrica/efectos adversos , Humanos , Neuroestimuladores Implantables , Síntomas del Sistema Urinario Inferior/fisiopatología , Síntomas del Sistema Urinario Inferior/terapia , Región Sacrococcígea , Raíces Nerviosas Espinales/fisiopatología , Raíces Nerviosas Espinales/cirugía , Vejiga Urinaria Neurogénica/etiología
3.
Free Radic Biol Med ; 143: 454-470, 2019 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-31472247

RESUMEN

Brachial plexus avulsion (BPA) occurs when the spinal nerve roots are pulled away from the surface of the spinal cord and disconnects neuronal cell body from its distal downstream axon, which induces massive motoneuron death, motor axon degeneration and de-innervation of targeted muscles, thereby resulting in permanent paralysis of motor functions in the upper limb. Avulsion injury triggers oxidative stress and intense local neuroinflammation at the lesioned site, leading to the death of most motoneurons. Berberine (BBR), a natural isoquinoline alkaloid derived from medicinal herbs of Berberis and Coptis species, has been reported to possess neuro-protective, anti-inflammatory and anti-oxidative effects in various animal models of central nervous system (CNS)-related disorders. In this study, we aimed to investigate the effect of BBR on motoneuron survival and axonal regeneration following spinal root avulsion plus re-implantation in rats. Our results indicated BBR significantly accelerated motor function recovery in the forelimb as revealed by the increased Terzis grooming test score, facilitated motor axon regeneration as evidenced by the elevated number of Fluoro-Gold-labeled and P75-positive regenerative motoneurons. The survival of motoneurons was notably promoted by BBR administration presented with boosted ChAT-immunopositive and neutral red-stained neurons. BBR treatment efficiently alleviated muscle atrophy, attenuated functional motor endplates loss in biceps and prevented the reduction of motor axons in the musculocutaneous nerve. Additionally, BBR treatment markedly mitigated the avulsion-induced neuroinflammation via inhibiting microglial and astroglial reactivity, up-regulated the expression of antioxidative indicator Cu/Zn SOD, and down-regulated the levels of nNOS, 3-NT, lipid peroxidation and NF-κB, as well as promoted SIRT1, PI3K and Akt activation. Collectively, BBR might be a promising therapy to assist re-implantation surgery for the treatment of BPA.


Asunto(s)
Axones/fisiología , Berberina/farmacología , Neuronas Motoras/citología , Regeneración Nerviosa/efectos de los fármacos , Reimplantación/métodos , Traumatismos de la Médula Espinal/prevención & control , Raíces Nerviosas Espinales/cirugía , Animales , Femenino , Neuronas Motoras/efectos de los fármacos , Neuronas Motoras/metabolismo , Fármacos Neuroprotectores/farmacología , Ratas , Ratas Sprague-Dawley , Recuperación de la Función , Traumatismos de la Médula Espinal/etiología , Traumatismos de la Médula Espinal/patología , Raíces Nerviosas Espinales/lesiones , Raíces Nerviosas Espinales/patología , Nervios Espinales/trasplante
4.
Neuromodulation ; 22(6): 703-708, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30786100

RESUMEN

OBJECTIVES: High-frequency (kHz) stimulation of preganglionic pelvic nerve afferents can inhibit voiding in both anesthetized and conscious rats. The afferents travel via the S1 sacral nerve root, which is easier to access than the distal pelvic nerve fibers within the abdominal cavity. We therefore investigated whether voiding could be inhibited by high-frequency stimulation at S1 and how this compared to distal pelvic nerve stimulation. METHODS: Urethane-anesthetized rats were instrumented to record bladder pressure and abdominal wall electromyogram and to stimulate the distal preganglionic pelvic nerve bundle and S1 sacral root. Saline was infused continuously into the bladder to evoke repeated voiding. Stimulation was initiated within 1-2 sec of the onset of the steep rise in bladder pressure signaling an imminent void. RESULTS: In six rats, stimulation of the distal pelvic nerve bundle (1-3 kHz sinusoidal waveform 1 mA, 60 sec) supressed the occurrence of an imminent void. Voiding resumed within 70 ± 13.0 sec (mean ± SEM) of stopping stimulation. Stimulation (using the same parameters) of the S1 root at the level of the sacral foramen suppressed voiding for the entire stimulation period in three rats and deferred voiding for 35-56 sec (mean 44.0 ± 3.2 sec) in the remaining three. Stimulation at either site when the bladder was approximately half full, as estimated from previous intervoid intervals, had no effect on voiding. CONCLUSIONS: This preliminary study provides proof-of-concept for the sacral root as an accessible target for high-frequency stimulation that may be developed as an "on demand" neuromodulation paradigm to suppress unwanted urinary voids. CONFLICT OF INTEREST: The authors reported no conflict of interest.


Asunto(s)
Anestésicos Intravenosos/administración & dosificación , Terapia por Estimulación Eléctrica/métodos , Sacro/inervación , Sacro/fisiología , Raíces Nerviosas Espinales/fisiología , Micción/fisiología , Animales , Femenino , Ratas , Ratas Wistar , Sacro/cirugía , Raíces Nerviosas Espinales/cirugía , Uretano/administración & dosificación
5.
Sci Rep ; 7(1): 12028, 2017 09 20.
Artículo en Inglés | MEDLINE | ID: mdl-28931824

RESUMEN

The "gold standard" treatment of patients with spinal root injuries consists of delayed surgical reconnection of nerves. The sooner, the better, but problems such as injury-induced motor neuronal death and muscle atrophy due to long-term denervation mean that normal movement is not restored. Herein we describe a preclinical model of root avulsion with delayed reimplantation of lumbar roots that was used to establish a new adjuvant pharmacological treatment. Chronic treatment (up to 6 months) with NeuroHeal, a new combination drug therapy identified using a systems biology approach, exerted long-lasting neuroprotection, reduced gliosis and matrix proteoglycan content, accelerated nerve regeneration by activating the AKT pathway, promoted the formation of functional neuromuscular junctions, and reduced denervation-induced muscular atrophy. Thus, NeuroHeal is a promising treatment for spinal nerve root injuries and axonal regeneration after trauma.


Asunto(s)
Acamprosato/farmacología , Atrofia Muscular/tratamiento farmacológico , Regeneración Nerviosa/efectos de los fármacos , Fármacos Neuroprotectores/farmacología , Radiculopatía/tratamiento farmacológico , Ribavirina/farmacología , Raíces Nerviosas Espinales/efectos de los fármacos , Animales , Modelos Animales de Enfermedad , Combinación de Medicamentos , Femenino , Vértebras Lumbares , Desnervación Muscular , Músculo Esquelético/efectos de los fármacos , Músculo Esquelético/fisiopatología , Músculo Esquelético/cirugía , Atrofia Muscular/fisiopatología , Regeneración Nerviosa/fisiología , Radiculopatía/fisiopatología , Ratas Sprague-Dawley , Recuperación de la Función , Reimplantación , Raíces Nerviosas Espinales/fisiopatología , Raíces Nerviosas Espinales/cirugía
6.
Neuroscience ; 329: 213-25, 2016 08 04.
Artículo en Inglés | MEDLINE | ID: mdl-27185485

RESUMEN

Brachial plexus injury (BPI) often involves the complete or partial avulsion of one or more of the cervical nerve roots, which leads to permanent paralysis of the innervated muscles. Reimplantation surgery has been attempted as a clinical treatment for brachial plexus root avulsion but has failed to achieve complete functional recovery. Lithium is a mood stabilizer drug that is used to treat bipolar disorder; however, its effects on spinal cord or peripheral nerve injuries have also been reported. The purpose of this study was to investigate whether lithium can improve functional motor recovery after ventral root avulsion and reimplantation in a rat model of BPI. The results showed that systemic treatment with a clinical dose of lithium promoted motor neuron outgrowth and increased the efficiency of motor unit regeneration through enhanced remyelination. An analysis of myelin-associated genes showed that the effects of lithium started during the early phase of remyelination and persisted through the late stage of the process. Efficient remyelination of the regenerated axons in the lithium-treated rats led to an earlier functional recovery. Therefore, we demonstrated that lithium might be a potential clinical treatment for BPI in combination with reimplantation surgery.


Asunto(s)
Axones/efectos de los fármacos , Compuestos de Litio/farmacología , Vaina de Mielina/efectos de los fármacos , Regeneración Nerviosa/efectos de los fármacos , Fármacos Neuroprotectores/farmacología , Raíces Nerviosas Espinales/efectos de los fármacos , Animales , Axones/patología , Axones/fisiología , Plexo Braquial/efectos de los fármacos , Plexo Braquial/lesiones , Plexo Braquial/fisiopatología , Plexo Braquial/cirugía , Modelos Animales de Enfermedad , Evaluación Preclínica de Medicamentos , Femenino , Neuronas Motoras/efectos de los fármacos , Neuronas Motoras/patología , Neuronas Motoras/fisiología , Vaina de Mielina/patología , Vaina de Mielina/fisiología , Regeneración Nerviosa/fisiología , Distribución Aleatoria , Ratas Sprague-Dawley , Recuperación de la Función/efectos de los fármacos , Recuperación de la Función/fisiología , Reimplantación , Raíces Nerviosas Espinales/lesiones , Raíces Nerviosas Espinales/fisiopatología , Raíces Nerviosas Espinales/cirugía
7.
Med Hypotheses ; 87: 87-9, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26643667

RESUMEN

Spinal cord injury results not only in motor and sensory dysfunctions, but also in loss of normal urinary bladder functions. A number of clinical studies were focused on the strategies for improvement of functions of the bladder. Completely dorsal root rhizotomy or selective specific S2-4 dorsal root rhizotomy suppress autonomic hyper-reflexia but have the same defects: it could cause detrusor and sphincter over-relaxation and loss of reflexive erection in males. So precise operation needs to be considered. We designed an experimental trail to test the possibility on the basis of previous study. We found that different dorsal rootlets which conduct impulses from the detrusor or sphincter can be distinguished by electro-stimulation in SD rats. Highly selective rhizotomy of specific dorsal rootlets could change the intravesical pressure and urethral perfusion pressure respectively. We hypothese that for neurogenic bladder following spinal cord injury, highly selective rhizotomy of specific dorsal rootlets maybe improve the bladder capacity and the detrusor sphincter dyssynergia, and at the same time, the function of other pelvic organ could be maximize retainment.


Asunto(s)
Rizotomía/métodos , Raíces Nerviosas Espinales/cirugía , Vejiga Urinaria Neurogénica/cirugía , Animales , Humanos , Masculino , Modelos Animales , Modelos Neurológicos , Conducción Nerviosa , Presión , Ratas , Ratas Sprague-Dawley , Traumatismos de la Médula Espinal/complicaciones , Traumatismos de la Médula Espinal/fisiopatología , Traumatismos de la Médula Espinal/cirugía , Vejiga Urinaria/inervación , Vejiga Urinaria/fisiopatología , Vejiga Urinaria/cirugía , Vejiga Urinaria Neurogénica/etiología , Vejiga Urinaria Neurogénica/fisiopatología
10.
Spine J ; 15(12): 2472-83, 2015 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-26291400

RESUMEN

BACKGROUND CONTEXT: Sacral anterior root stimulation (SARS) and posterior sacral rhizotomy restores the ability to urinate on demand with low residual volumes, which is a key for preventing urinary complications that account for 10% of the causes of death in patients with spinal cord injury with a neurogenic bladder. Nevertheless, comparative cost-effectiveness results on a long time horizon are lacking to adequately inform decisions of reimbursement. PURPOSE: This study aimed to estimate the long-term cost-utility of SARS using the Finetech-Brindley device compared with medical treatment (anticholinergics+catheterization). STUDY DESIGN/SETTINGS: The following study design is used for the paper: Markov model elaborated with a 10-year time horizon; with four irreversible states: (1) initial treatment, (2) year 1 of surgery for urinary complication, (3) year >1 of surgery for urinary complication, and (4) death; and reversible states: urinary calculi; Finetech-Brindley device failures. PATIENT SAMPLE: The sample consisted of theoretical cohorts of patients with a complete spinal cord lesion since ≥1 year, and a neurogenic bladder. OUTCOME MEASURES: Effectiveness was expressed as quality adjusted life years (QALYs). Costs were valued in EUR 2013 in the perspective of the French health system. METHODS: A systematic review and meta-analyses were performed to estimate transition probabilities and QALYs. Costs were estimated from the literature, and through simulations using the 2013 French prospective payment system classification. Probabilistic analyses were conducted to handle parameter uncertainty. RESULTS: In the base case analysis (2.5% discount rate), the cost-utility ratio was 12,710 EUR per QALY gained. At a threshold of 30,000 EUR per QALY the probability of SARS being cost-effective compared with medical treatment was 60%. If the French Healthcare System reimbursed SARS for 80 patients per year during 10 years (anticipated target population), the expected incremental net health benefit would be 174 QALYs, and the expected value of perfect information (EVPI) would be 4.735 million EUR. The highest partial EVPI is reached for utility values and costs (1.3-1.6 million EUR). CONCLUSIONS: Our model shows that SARS using Finetech-Brindley device offers the most important benefit and should be considered cost-effective at a cost-effectiveness threshold of 30,000 EUR per QALY. Despite a high uncertainty, EVPI and partial EVPI may indicate that further research would not be profitable to inform decision-making.


Asunto(s)
Análisis Costo-Beneficio , Terapia por Estimulación Eléctrica/economía , Rizotomía/economía , Traumatismos de la Médula Espinal/cirugía , Vejiga Urinaria Neurogénica/cirugía , Humanos , Evaluación de Resultado en la Atención de Salud , Estudios Prospectivos , Años de Vida Ajustados por Calidad de Vida , Traumatismos de la Médula Espinal/complicaciones , Raíces Nerviosas Espinales/cirugía , Vejiga Urinaria Neurogénica/etiología
11.
Spinal Cord ; 53(4): 297-301, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25600307

RESUMEN

STUDY DESIGN: Cross-sectional study. OBJECTIVE: To evaluate the long-term effect of the sacral anterior root stimulator (SARS) on neurogenic bowel dysfunction in a large, well defined spinal cord injury (SCI) cohort. SETTING: Department of Neuro-Urology, Bad Wildungen, Germany. METHODS: Subjects undergone surgery at for SARS-SDAF (sacral deafferentation) between September 1986 and July 2011 (n=587) answered a questionnaire. In total, 277 SARS subjects were available for the baseline (recall) and follow-up comparison. RESULTS: Median age was 49 years (range: 19-80), time from SCI to surgery was 10 years (range: 0-49) and from surgery to follow-up 13 (range: 1-25). Of the responders 73% used SARS for bowel emptying. On visual analog scale (VAS) ranging from 0-10 (best), satisfaction with SARS was 10. Baseline and follow-up comparison showed a decline in the median VAS score 0-10 (worst) for bowel symptoms from 6 (range: 4-8) to 4 (range: 2-6), P<0.0001; median neurogenic bowel dysfunction score from 17 (range: 11-2) to 11 (range: 9-15), P<0.0001; median St Marks score from 4 (range: 0-7) to 4 (range: 0-5), P=0.01; and median Cleveland constipation score from 7 (range: 6-10) to 6 (range: 4-8), P<0.0001. Use of suppositories, digital evacuation and mini enema and subjects totally dependent on assistance during defecation were significantly lower after SARS. CONCLUSIONS: The SARS has the potential to be one of the few treatment methods targeting multiple organ dysfunctions following SCI.


Asunto(s)
Estreñimiento/terapia , Terapia por Estimulación Eléctrica/métodos , Intestino Neurogénico/terapia , Traumatismos de la Médula Espinal/terapia , Raíces Nerviosas Espinales/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Estreñimiento/fisiopatología , Estudios Transversales , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Intestino Neurogénico/fisiopatología , Sacro , Traumatismos de la Médula Espinal/fisiopatología , Raíces Nerviosas Espinales/fisiopatología , Encuestas y Cuestionarios , Resultado del Tratamiento , Adulto Joven
12.
J Urol ; 193(2): 598-604, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25158270

RESUMEN

PURPOSE: The artificial somato-autonomic reflex arch (Xiao procedure) was proposed as treatment for neurogenic bladder dysfunction. We investigated the effects of the procedure on lower urinary tract function. MATERIALS AND METHODS: Seven and 3 patients with a median age of 46 years (range 19 to 64) had AIS A and B spinal cord injury, respectively. In these patients an anastomosis was created between the ventral (motor) part of L5 and the ventral part of the S2 root. Urodynamics were performed and a standard questionnaire was completed at baseline and 18 months postoperatively. RESULTS: Artificial reflex arch stimulation did not initiate voiding or increase bladder pressure. Maximum bladder capacity did not change significantly from baseline to followup (median 427.5 ml, range 168 to 581 vs 498.5, range 271 to 580, p = 0.09). Likewise, bladder compliance did not significantly differ at baseline and followup (median 16.9 ml/cm H2O, range 15.0 to 65.0 vs 25.1, range 17.5 to 50.0, p = 0.95). No difference was found in awareness of bladder emptying, incontinence episodes, bladder emptying method or medication use for neurogenic bladder dysfunction. The only statistically significant change was a decreased incidence of leakage at followup on urodynamics (p = 0.03). Postoperatively decreased genital sensation and erectile dysfunction developed in 1 patient and another experienced a minor cerebrovascular accident with no long-term complications. CONCLUSIONS: In contrast to earlier findings, creation of an artificial somato-autonomic reflex arch in patients with spinal cord injury had no clinically relevant effect on lower urinary tract function.


Asunto(s)
Terapia por Estimulación Eléctrica , Reflejo , Traumatismos de la Médula Espinal/fisiopatología , Raíces Nerviosas Espinales/cirugía , Vejiga Urinaria Neurogénica/fisiopatología , Vejiga Urinaria Neurogénica/terapia , Vejiga Urinaria/fisiopatología , Adulto , Anastomosis Quirúrgica , Sistema Nervioso Autónomo/fisiopatología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Traumatismos de la Médula Espinal/complicaciones , Vejiga Urinaria Neurogénica/etiología , Procedimientos Quirúrgicos Urológicos/métodos , Adulto Joven
13.
Neurosurg Clin N Am ; 25(4): 763-75, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25240663

RESUMEN

Complex craniofacial pain can be a challenging condition to manage both medically and surgically, but there is a resurgence of interest in the role of neurostimulation therapy. Surgical options for complex craniofacial pain syndromes include peripheral nerve/field stimulation, ganglion stimulation, spinal cord stimulation, dorsal nerve root entry zone lesioning, motor cortex stimulation, and deep brain stimulation. Peripheral nerve/field stimulation is rapidly being explored and is preferred by both patients and surgeons. Technological advances and improved understanding of the interactions of pain pathways with its affective component will widen the scope of neurostimulation therapy for craniofacial pain syndromes.


Asunto(s)
Dolor Facial/cirugía , Dolor Facial/terapia , Procedimientos Neuroquirúrgicos/métodos , Técnicas de Ablación , Estimulación Encefálica Profunda , Estimulación Eléctrica , Dolor Facial/fisiopatología , Humanos , Corteza Motora/cirugía , Estimulación de la Médula Espinal , Raíces Nerviosas Espinales/cirugía , Estimulación Eléctrica Transcutánea del Nervio
14.
Surg Innov ; 20(6): 614-24, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23404204

RESUMEN

BACKGROUND: Sacral neuromodulation (SN) is an emerging treatment for constipation. This review evaluates the mechanism of action, techniques, efficacy, and adverse effects of SN in the management of constipation. METHODS: Electronic searches for studies describing the use of SN were performed in PubMed, MEDLINE and Embase. Abstracts were reviewed and full text copies of all relevant articles obtained. RESULTS: Fifty-nine results were obtained on the initial searches. Ten studies discussed the results of SN in patients with constipation. A total of 225 temporary neuromodulations and 125 permanent implants were performed. Bowel diaries showed improvement in assessment criteria in more than 50% of patients on temporary neuromodulation and the results were maintained in approximately 90% of patients who underwent permanent implantation over medium to long-term follow-up. The rate of adverse effects was high, but the majority of them were related to electrode position. Improvements in transit studies and anorectal physiology after neuromodulation were noted in some studies. The recognized limitations included a lack of randomized studies and an inability to perform meta-analysis. CONCLUSION: Sacral neuromodulation may be an effective treatment in selected patients with constipation and should be a part of the management repertoire. Improvement in defecatory frequency with temporary wire placement is a good predictor of subsequent response following permanent implant. Further research into predictive factors for success would improve patient selection.


Asunto(s)
Estreñimiento/terapia , Terapia por Estimulación Eléctrica/métodos , Procedimientos Neuroquirúrgicos/métodos , Sacro/cirugía , Raíces Nerviosas Espinales/cirugía , Estreñimiento/cirugía , Terapia por Estimulación Eléctrica/efectos adversos , Terapia por Estimulación Eléctrica/instrumentación , Electrodos Implantados , Humanos , Procedimientos Neuroquirúrgicos/efectos adversos , Procedimientos Neuroquirúrgicos/instrumentación
15.
Spinal Cord ; 50(4): 294-7, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22105461

RESUMEN

STUDY DESIGN: Retrospective review study. OBJECTIVES: To identify whether it is safe to perform a magnetic resonance imaging (MRI) exam on patients who have a sacral anterior root stimulator (SARS). SETTING: Adult patients with spinal cord injury and implanted SARS attending the National Spinal Injuries Centre who have had MRI scans. METHODS: Retrospective review between 1989 and 2010. The effect of the MRI scans on the function of the SARS (Finetech-Brindley, UK) was assessed up to 6 months following MRI at 0.2 and 1.5 T. RESULTS: A total of 18 patients with SARS implants had MRI scans at 0.2 and 1.5 T of the cervical, thoracic and lumbar spine, head, shoulder and pelvis. MRI examinations were abandoned on two occasions in one patient due to radiofrequency interference. One patient's stimulator ceased to function 5 months following MRI; both of these patients showing complications had their MRI examinations at 0.2 T. There were no adverse effects at 1.5 T. In one patient the SARS was removed within 6 months after MRI due to an unrelated medical condition. A total of 17 patients showed no symptoms that required terminating the examination. In all the 11 patients with a complete and functioning implant before MRI at 1.5 T, the SARS was functioning appropriately, and no change in bladder function was reported up to 6 months following MRI. CONCLUSION: It is safe to perform an MRI scan on patients with SARS providing the examination is conducted in a 1.5 T system.


Asunto(s)
Terapia por Estimulación Eléctrica/efectos adversos , Electrodos Implantados/efectos adversos , Imagen por Resonancia Magnética/efectos adversos , Traumatismos de la Médula Espinal/fisiopatología , Raíces Nerviosas Espinales/fisiología , Vejiga Urinaria Neurogénica/fisiopatología , Vejiga Urinaria Neurogénica/terapia , Adulto , Anciano , Terapia por Estimulación Eléctrica/instrumentación , Terapia por Estimulación Eléctrica/métodos , Femenino , Estudios de Seguimiento , Humanos , Imagen por Resonancia Magnética/normas , Imagen por Resonancia Magnética/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Traumatismos de la Médula Espinal/complicaciones , Traumatismos de la Médula Espinal/patología , Raíces Nerviosas Espinales/cirugía , Tiempo , Reino Unido , Vejiga Urinaria Neurogénica/etiología , Adulto Joven
16.
Int Urogynecol J ; 21 Suppl 2: S491-6, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20972543

RESUMEN

The complications of sacral neuromodulation have been minimized as technology has improved. The main surgical complication remains to be surgical site infection. We review evidence-based suggestions and procedure-specific techniques that reduce the infection rate to less than 2%. In the past, surgical revision was reported as high as 40%. The current revision rate at Mayo Clinic Florida is 10%. The most common reason for surgical revision is either battery end-of-life or loss of effectiveness. We review the best practices of the procedure and a systematic approach to troubleshoot loss of effectiveness.


Asunto(s)
Terapia por Estimulación Eléctrica/efectos adversos , Neuroestimuladores Implantables/efectos adversos , Procedimientos Quirúrgicos Mínimamente Invasivos/efectos adversos , Infección de la Herida Quirúrgica/etiología , Trastornos Urinarios/terapia , Terapia por Estimulación Eléctrica/instrumentación , Terapia por Estimulación Eléctrica/métodos , Falla de Equipo , Humanos , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Sacro/cirugía , Raíces Nerviosas Espinales/cirugía
17.
Beijing Da Xue Xue Bao Yi Xue Ban ; 42(5): 530-4, 2010 Oct 18.
Artículo en Chino | MEDLINE | ID: mdl-20957009

RESUMEN

OBJECTIVE: To study the highly selective dorsal rhizotomy influence on bladder and penis erection function of SD rats. METHODS: Forty mature male SD rats of clean grades, with weight range of 300-350 g were selected. Ten rats were chosen to do electrophysiology study on dorsal rootlets of L6 and S1 segment. Changes in intravesical pressure (IVP) and intracavernous pressure (ICP) were investigated to define main segments which conducted to bladder and corpus cavernosum. Thirty rats were divided into two groups (A and B) on average at random. In group A, we made highly selective dorsal rhizotomy on the fascicle of conduction bladder detrusor muscle. In group B, we made highly selective dorsal rhizotomy on the fascicle of conduction corpus cavernosum. Changes of IVP and ICP after rhizotomy were investigated and recorded. RESULTS: The changes of IVP during electrostimulation were of no significant variation between L6 and S1 (P=0.972). With the changes of ICP during electrostimulation, S1 segment was of more significant variation than L6 segment, ΔICP of S1 was (13.05±8.41) cmH2O (1 cmH2O=0.098 kPa), while ΔICP of L6 was (6.88±2.76) cmH2O (P<0.01). There was no reasonable variation in IVP and ICP on the left and right dorsal rootlets of S1 segment (P was 0.623 and 0.828 respectively). In group A, there was significant variation in IVP, ΔIVP of before rhizotomy was (14.37±4.89) cmH2O, while after rhizotomy was (3.25±1.29) cmH2O (P<0.001) while no obvious variation in ICP (P=0.153) after highly selective rhizotomy on S1 dorsal rootlets. In group B, there was significant variation in ICP, ΔICP of before rhizotomy was (11.97±4.41) cmH2O, while after rhizotomy was (2.68±1.01) cmH2O (P<0.001), but no obvious variation in IVP (P=0.162) after highly selective rhizotomy on S1 dorsal rootlets. CONCLUSION: SD rats' different rootlets of S1 dorsal rootlets can be distinguished by microanatomy and electrostimulation. The IVP and ICP had distinct changes after highly selective dorsal rhizotomy. It could provide an experimental support to treat spastic bladder after spinal cord injury and retain at maximum reflexible erection function in the clinic.


Asunto(s)
Erección Peniana/fisiología , Rizotomía/métodos , Raíces Nerviosas Espinales/fisiología , Raíces Nerviosas Espinales/cirugía , Vejiga Urinaria/fisiología , Animales , Estimulación Eléctrica , Electrofisiología , Masculino , Ratas , Ratas Sprague-Dawley
18.
BMC Musculoskelet Disord ; 11: 180, 2010 Aug 11.
Artículo en Inglés | MEDLINE | ID: mdl-20698999

RESUMEN

BACKGROUND: This report describes the methodological approach and clinical application of a minimally invasive intervention to treat lumbar spinal stenosis (LSS). METHODS: Thirty-four patients with LSS underwent fluoroscopically guided transforaminal epidural dry needling using a specially designed flexed Round Needle. The needle was inserted 8-12 cm lateral to the midline at the level of the stenosis and advanced to a position between the anterior side of the facet joint and pedicle up to the outer-third of the pedicle. The needle was advanced medially and backed laterally within a few millimetres along the canal side of the inferior articular process between the facet joint and pedicle. The procedure was completed when a marked reduction in resistance was felt at the tip of the needle. The procedure was performed bilaterally at the level of the stenosis. RESULTS: The average follow-up period was 12.9 +/- 1.1 months. The visual analogue scale (VAS) pain score was reduced from 7.3 +/- 2.0 to 4.6 +/- 2.5 points, the Oswestry Disability Index (ODI) score decreased from 41.4 +/- 17.2 to 25.5 +/- 12.6% and the average self-rated improvement was 52.6 +/- 33.1%. The VAS scores indicated that 14 (41.2%) patients reported a "good" to "excellent" treatment response, while 11 (32.4%) had a "good" to "excellent" treatment response on the ODI and 22 (64.7%) had a "good" to "excellent" treatment response on the self-rated improvement scale. CONCLUSIONS: These results suggest that fluoroscopically guided transforaminal epidural dry needling is effective for managing LSS.


Asunto(s)
Espacio Epidural/cirugía , Fluoroscopía/métodos , Vértebras Lumbares/cirugía , Agujas/normas , Estenosis Espinal/cirugía , Cirugía Asistida por Computador/métodos , Espacio Epidural/diagnóstico por imagen , Espacio Epidural/patología , Femenino , Humanos , Vértebras Lumbares/diagnóstico por imagen , Vértebras Lumbares/patología , Masculino , Agujas/tendencias , Procedimientos Neuroquirúrgicos/instrumentación , Procedimientos Neuroquirúrgicos/métodos , Radiculopatía/diagnóstico por imagen , Radiculopatía/patología , Radiculopatía/cirugía , Canal Medular/diagnóstico por imagen , Canal Medular/patología , Canal Medular/cirugía , Raíces Nerviosas Espinales/diagnóstico por imagen , Raíces Nerviosas Espinales/patología , Raíces Nerviosas Espinales/cirugía , Estenosis Espinal/diagnóstico por imagen , Estenosis Espinal/patología , Cirugía Asistida por Computador/instrumentación , Resultado del Tratamiento , Articulación Cigapofisaria/patología , Articulación Cigapofisaria/fisiopatología , Articulación Cigapofisaria/cirugía
19.
Pain Pract ; 10(1): 49-53, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-19735362

RESUMEN

INTRODUCTION: Treatment of functional anorectal pain disorders remains a challenge. The purpose of this study is to describe a single center experience with sacral neuromodulation for the treatment of chronic functional anorectal pain. METHODS: This is a retrospective study based on prospectively collected data of patients treated with sacral neuromodulation for functional anorectal pain from April 2005 to August 2008. Symptoms were analyzed using a visual analog scale pain score (0 to 10). A 7-point Likert scale was used to rate global perceived effect. All patients had a percutaneous nerve evaluation and subsequent test stimulation to assess sacral neuromodulation outcome prior to permanent implantation. Patients were eligible for permanent sacral neuromodulation in case of a pain score <3 during test stimulation and/or >50% decrease in the pain score compared to baseline. RESULTS: Nine patients (2 males) were included in this study. Mean age was 53.8 years (27.6 to 74.0). Four patients (1 male) had successful test stimulation and were eligible for permanent implantation. Median pain score decreased from 8.0 (6.0 to 9.0) to 1.0 (0 to 2.0). All patients experienced a lasting improvement during the follow-up till 24 months. Global perceived effect in successful patient was 1 (completely recovered) in one patient and 2 (much improved) in three patients. CONCLUSION: This study showed that sacral neuromodulation can be a successful treatment for functional anorectal pain not responding to other treatments. Improvement obtained during test stimulation is a good predictor (diagnostic) for sustained success of permanent sacral neuromodulation.


Asunto(s)
Enfermedades del Ano/terapia , Terapia por Estimulación Eléctrica/métodos , Plexo Lumbosacro/cirugía , Dolor Pélvico/terapia , Enfermedades del Recto/terapia , Raíces Nerviosas Espinales/cirugía , Adulto , Anciano , Enfermedades del Ano/fisiopatología , Terapia por Estimulación Eléctrica/instrumentación , Electrodos Implantados/normas , Electrodos Implantados/estadística & datos numéricos , Femenino , Humanos , Plexo Lumbosacro/anatomía & histología , Plexo Lumbosacro/fisiología , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud/métodos , Dimensión del Dolor/métodos , Dolor Pélvico/fisiopatología , Enfermedades del Recto/fisiopatología , Estudios Retrospectivos , Autoestimulación/fisiología , Raíces Nerviosas Espinales/anatomía & histología , Raíces Nerviosas Espinales/fisiología , Resultado del Tratamiento
20.
Zhongguo Gu Shang ; 22(10): 763-4, 2009 Oct.
Artículo en Chino | MEDLINE | ID: mdl-19902757

RESUMEN

OBJECTIVE: To explore the feasibility and the result for the surgical treatment of spastic cerebral paralysis of the upper limbs in patients who underwent the selective cervical dorsal root cutting off part of the vertebral lateral mass fixation combined with exercise therapy. METHODS: From March 2004 to April 2008, 27 patients included 19 boys and 8 girls, aging 13-21 years with an average of 15 years underwent selective cervical dorsal root cutting off part of the vertebral lateral mass fixation with exercise therapy. The AXIS 8 holes titanium plate was inserted into the lateral mass of spinous process through guidance of the nerve stimulator, choosed fasciculus of low-threshold nerve dorsal root and cut off its 1.5 cm. After two weeks, training exercise therapy was done in patients. Training will include lying position, turning body, sitting position, crawling, kneeling and standing position, walking and so on. Spastic Bobath inhibiting abnormal pattern was done in the whole process of training. The muscular tension, motor function (GMFM), functional independence (WeeFIM) were observed after treatment. RESULTS: All patients were followed up from 4 to 16 months with an average of 6 months. Muscular tension score were respectively 3.30 +/- 0.47 and 1.25 +/- 0.44 before and after treatment;GMFM score were respectively 107.82 +/- 55.17 and 131.28 +/- 46.45; WeeFIM score were respectively 57.61 +/- 25.51 and 87.91 +/- 22.39. There was significant improvement before and after treatment (P < 0.01). CONCLUSION: Selective cervical dorsal root cutting off part of the vertebral lateral mass fixation combined with exercise therapy was used to treat spastic cerebral paralysis of the upper limbs is safe and effective method, which can decrease muscular tension and improve motor function, which deserves more wide use.


Asunto(s)
Brazo/fisiopatología , Parálisis Cerebral/complicaciones , Vértebras Cervicales/cirugía , Terapia por Ejercicio , Espasticidad Muscular/cirugía , Parálisis/cirugía , Raíces Nerviosas Espinales/cirugía , Adolescente , Femenino , Humanos , Masculino , Espasticidad Muscular/etiología , Espasticidad Muscular/fisiopatología , Espasticidad Muscular/terapia , Parálisis/etiología , Parálisis/fisiopatología , Parálisis/terapia , Adulto Joven
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