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2010, Number 1-4

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Rev Neurol Neurocir Psiquiat 2010; 43 (1-4)

Magnetic evoked potentials. Standardization of values of reference

Dávalos LJA, Añorve BCR, Dávalos RJE

Language: Spanish
References: 43
Page: 26-38
PDF size: 219.99 Kb.


ABSTRACT

Background. The magnetic stimulation has been used by therapeutic and diagnostic ends, on having activated the cerebral cortex or peripheral nerves and having registered responses in the muscles, calls motors evoked potential (MEP).
Objective. Established the standardize values of reference of the PEM in our population.
Methods. I design observational, transversely and prospective, calculate muestral for finite population (alpha error 0.05). Adult healthy volunteers (n = 68 volunteers). Using a magnetic stimulator Medtronic MagPro R30, a coil in forms of “8”, registering in electromiograph Medtronic, with protocol of AMCP. For every MEP, we determined the conduction motor central time (CMCT), conduction motor peripheral time (CMPT) and conduction motor total time (CMTT), with magnetic stimulation transcraneal and transvertebral (cervical and lumbar) registering 32 muscles in every volunteer (2,176 muscles).
Results. We obtained the values of reference (± 2 s.d) for every muscle (p › 0.05 between the genre, the age or each corporal side), although with discreet interrelation between the height and the CMTT and CMPT in low extremities (r ‹ 0.3).
Discussion. We obtained CMTT, CMCT and CMPT lightly minor with regard to those of the mentioned authors, differing in the use of the coil in from of “8” and the employment of preinervation, which is a cause of a decrease of the latencies of the MEP. There were no adverse side effects.
Conclusions. There were fulfilled the targets of the standardization of the values of reference in our popula- tion. Of big utility to be applied in an easy and fast way to value the integrity of the whole route cortico-espino-muscular.


REFERENCES

  1. Chokroverty S. Magnetic stimulation in clinical neurophysiology. 5st. Ed. Washington: Butterworth Publishers; 1990, p. 3-391.

  2. Kail M, Rosler F. Transcranial magnetic brain stimulation: a tool to investigate central motor pathways. News Physiol Sci 2001; 16: 297-302.

  3. Curra A, Modugno N, Inghilleri M, Berardelli A. Transcranial magnetic stimulation techniques in clinical investigation. Neurology 2002; 59: 1851-9.

  4. Hess CW, Mills KR, Murray NMF. Measurement of central motor conduction in multiple sclerosis by magnetic brain stimulation. Lancet 1986; 2: 355-8.

  5. Merton PA, Morton HB. Stimulation of the cerebral cortex in the intact human subject. Nature 1980; 285: 227.

  6. Bogacz D. Estimulación magnética transcraneana en el hombre. Rev Med Uruguay 1998; 14: 93-105.

  7. Barker AT, Jalinous R. Non invasive magnetic stimulation of human cortex. Lancet 1985; 1: 1106-7.

  8. Elena PB, Pedro OC. Valores de referencia para o tempo de conducao motora central e período de silencio obtenidos por estimulacao magnética transcraniana. Neurol 1999; 28(03): 2-27.

  9. Díaz ZS, Ramos P. Estimulación magnética transcraneal: estandarización del tiempo de conducción motora central en población mexicana. Archives Neurociencia 2000; 5(1): 21-8.

  10. Mayr N, Baumgartner C, Zeithofer J, Deecke L. The sensitivity of transcranial magnetic stimulation in detecting puramidal tract lesions in clinically definite multiple sclerosis. Neurology 1991; 41: 566-9.

  11. Theodore MD, Hunter MD. Transcranial magnetic stimulation for the treatment of seizures. Neurology 2002; 59: 560-2.

  12. Chen R, Classen J. Depression of motor cortex excitability by low-frequency transcranial magnetic stimulation. Neurology 1997; 48: 1398-403.

  13. Bear M, Connors B. Neurociencia. Explorando el cerebro. 1a. Ed. Barcelona: Masson; 2002, p. 2-402.

  14. Guillén P. Columna vertebral 1ª. Ed. Madrid: Editorial Mapfre Medicina; 1995, p. 127-215.

  15. Rothwell JC, Thompson PD, Day BL, Dick JPR, Kachi T. Motor cortex stimulation in intact man. I. General characteristics of the EMG responses in different muscles. Brain 1987; 110: 1173-90.

  16. Gimore F. The technical basis of electromyography. Muscle Nerve 1988: 661-7.

  17. Perotto A, Delagi E. Anatomical guide for the electromyographer. 3a. Ed Illinois: Charles C Thomas Publisher; 1994, p. 6-206.

  18. Dumitru D. Electrodiagnostic medicine. 5st. Ed. Phyladelphia: Hanley & Belfus; 1995, p. 2-348.

  19. Kimura J. Electrodiagnosis in diseases of nerve and muscle. Principles and practice. 3rd. Ed. Philadelphia: F.A. Davis Co.; 1989, p. 3-436.

  20. Chiappa KH. Evoked potentials in clinical medicine. 3rd. Ed. Philadelphia: Lippincott-Raven; 1997, p. 477-528.

  21. Lesser RP. Normas para EEG y potenciales evocados. J Clin Neurophysiol 2006; 7(3): 1-186.

  22. Bowen A. Manual de investigación clínica. 2a. Ed. Virginia: WIRB; 1997, p. 99-107.

  23. Weintrau J, Douglass C, Gillings D. Bioestadística en salud bucodental. 1a. Ed. Minesota: Cavco Publisher; 1985, p. 85-100.

  24. Moreno L, Cano F, García H. Epidemiología clínica. 2a. Ed. México: Interamericana-Mc Graw Hill; 1988, p. 34-52.

  25. Weiers R. Investigación de mercado. 1a. Ed. México: Prentice- Hall-Hispanoamericana; 1986, p. 96-131: 369-413.

  26. Lesser RP. Normas para EEG y potenciales evocados. J Clin Neurophysiol 1986; 3(1): 1-152.

  27. Oh SJ. Clinical electromyography. Nerve conduction studies. 2nd. Ed. Baltimore: Williams & Wilkins; 1993, p. 3-421.

  28. Livenson JA, Dong MM. Laboratory reference for clinical neurophysiology. 5st. Ed. Philadelphia: F.A. Company Co.; 1992, p. 3.23.

  29. DeLisa JA. Magnetoelectric stimulation. Nerve conduction velocity and clinical neurophysiology 5st. Ed. New York: Raven publishers; 1994, p. 305-57.

  30. Bickford RG, Guido M, Fortesque P. Magnetic stimulation of human peripheral nerve and brain: response enhancement by combined magnetoelectrical tecnique. Neurosurgery 1987; 20: 70-3.

  31. Bannister LH, Berry MM. Anatomía de Gray. 38a. Ed. Madrid: Harcout Brace; 1998, p. 91-343, 425-1367.

  32. Bahra A, Cikurel K. Lo esencial en neurología, 1a. Ed. Madrid: Harcout; 2000, p. 53-56, 179-93.

  33. DeLisa A, Bruce M, Gans D. Rehabilitation Medicine. Principles and practice. 3rd. Ed. Chap. 48. Stroke rehabilitation. Philadelphia: Lippincott-Raven publishers; 1998, p. 1165-88.

  34. 34 Constanza FG. Manual de medicina y rehabilitación. 1a. Ed. Argentina: Manual Moderno; 2002, p. 277-84.

  35. Brown WF. The physiological and tecnical basis of electromyography. 5st. Ed. Boston: Butterworth-Heinemann; 1984, p. 3-482.

  36. Brown WF, Bolton CF. Clinical electromyography. 2nd.. Ed. Boston: Butterworth-Heinemann; 1993, p. 2-316.

  37. Daube JR. AAEM minimonograph 11. Needle examination in clinical electromyography. Muscle Nerve 1991; 14: 685- 700.

  38. Liveson JA. Peripheral neurology. 2nd. Ed. Philadelphia: F.A. Davis Co.; 1991, p. 234-385.

  39. Sumner AJ. The physiology of peripheral nerve disease. 2nd. Ed. Philadelphia: WB Saunders; 1980, p. 216-412.

  40. Berardelli A, Formisano R. Stimulation of motor tracts in motor neuron disease. J Neurol Neurosurgery Psychiatry 1987; 50: 732-7.

  41. Navarro-Beltrán. Diccionario terminológico de ciencias médicas. 12a. Ed. México: Editorial Salvat; 1984, p. 1-987.

  42. García-Pelayo R. Diccionario moderno español inglés. 1a. Ed. México: Editorial Larousse; 1983, p. 1-1012.

  43. García-Pelayo R: Diccionario usual. 1a. Ed. México: Editorial Larousse; 1984, p. 2-1134.




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