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      Diagnóstico topográfico de lesiones del sistema nervioso simpático en la neuropatía epidémica cubana. Valor de la respuesta simpática cutánea

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          Abstract

          Este estudio tiene por objetivo demostrar electrofisiológicamente la existencia de trastornos del sistema nervioso autonómico (SNA) y profundizar en la probable topografía de las lesiones. Se estudió la respuesta simpática cutánea (RSC) en 37 pacientes con neuropatía epidémica cubana (NEC) y en 29 sujetos sanos, en respuesta a estímulos eléctricos y con registro simultáneo en las 4 extremidades. Tanto las latencias como las amplitudes de las RSC registradas en miembros inferiores (MI) de los pacientes fueron significativamente diferentes a las de los controles (p<0,05). En los miembros superiores (MS) no se apreció esta diferencia entre ambos grupos. Estos resultados constituyen una evidencia objetiva y reproducible de la lesión del SNA en la NEC. La mayor intensidad de la afectación de las amplitudes de las RSC de MI, con relativa indemnidad de las de MS, sugiere un predominio de la lesión axonal en la rama eferente periférica hacia las extremidades inferiores, congruente con la mayor afectación de los nervios periféricos en esta localización.

          Translated abstract

          The purpose of this study is to demonstrate from the electrophysiological point of view the existance of disorders of the autonomic nervous system (ANS) and to deepen in the probable topography of the lesions. The sympathetic skin response (SSR) was studied in 37 patients with Cuban epidemic neuropathy (CEN) and in 29 sound individuals. The response to electrical stimulation with simultaneous registry in the 4 limbs was assessed. The latencies and amplitudes of the SSR registered in the lower limbs of patients were significantly different from those of the controls (p < 0.05). This difference between both groups was not observed in the upper limbs. These results are an objective and reproducible evidence of the injury of the ANS in the Cuban epidemic neuropathy. The highest intensity of affectation of the amplitudes of the SSR of lower limbs, with relative indemnity of those of the upper limbs, suggests a predominance of the axonal injury of the peripheral efferent branch towards the lower limbs that is congruent with the greatest affectation of the peripheral nerves in this localization.

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          Most cited references23

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          Autonomic Nervous System Function

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            Autonomic nervous system function.

            Tests of autonomic function for the clinical autonomic neurophysiology laboratory should be noninvasive, sensitive, specific, reproducible, physiologically and clinically relevant, and not be excessively time-consuming. Laboratory evaluation is strongly indicated when the following are suspected: (1) generalized autonomic failure, (2) benign autonomic disorders that mimic life-threatening disorders, (3) distal small-fiber neuropathy, (4) the autonomic neuropathies, (5) sympathetically maintained pain, and (6) the postural orthostatic tachycardia syndrome. The preparation of the subject is important. Recommended tests should evaluate an adequate number of relevant autonomic systems. The Mayo laboratory utilizes two test batteries, the autonomic reflex screen and the reflex sympathetic dystrophy (RSD) screen. The former comprises the quantitative sudomotor axon reflex test (QSART), orthostatic blood pressure (BP) and heart rate (HR) responses to tilt, HR response to deep breathing, the Valsalva ratio, and beat-to-beat BP responses to the Valsalva maneuver, tilt, and deep breathing. The RSD screen comprises the recording of skin temperature, resting sweat output, and QSART distributions bilaterally.
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              Neuropatía epidémica en Cuba 1992-1994

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                Author and article information

                Contributors
                Role: COORD
                Role: ND
                Role: ND
                Role: ND
                Journal
                mtr
                Revista Cubana de Medicina Tropical
                Rev Cubana Med Trop
                Centro Nacional de Información de Ciencias Médicas (Ciudad de la Habana, , Cuba )
                0375-0760
                1561-3054
                1998
                : 50
                : suppl 4
                : 245-248
                Affiliations
                [01] Ciudad de La Habana orgnameInstituto de Neurología y Neurocirugía Cuba
                [02] Ciudad de La Habana orgnameHospital Clinicoquirúrgico Dr. Salvador Allende Cuba
                Article
                S0375-07601998000400005
                4d787b09-4ab1-40b2-b41a-abb03d45cbe3

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 02 April 1998
                : 17 July 1998
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 4
                Product

                SciELO Cuba

                Categories
                ARTÍCULOS ORIGINALES

                SISTEMA NERVIOSO AUTONOMO,ESTIMULACION ELECTRICA,CUBA,SYMPATHETIC NERVOUS, AUTONOMIC,ELECTRIC STIMULATION

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