{"id":32372,"date":"2026-09-01T18:28:00","date_gmt":"2026-09-01T22:28:00","guid":{"rendered":"https:\/\/www.rigicon.com\/?post_type=glossary-term&p=32372"},"modified":"2026-09-02T06:08:00","modified_gmt":"2026-09-02T10:08:00","slug":"reflejo-bulbocavernoso","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/es\/glossary-term\/reflejo-bulbocavernoso\/","title":{"rendered":"Reflejo bulbocavernoso"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[109],"glossary-product":[104,105],"class_list":["post-32372","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-diagnostic-phenomena","glossary-product-infla10-pulse-ipp-series","glossary-product-rigi10-malleable-penile-prosthesis"],"acf":{"gt-definition":"<p>El reflejo bulbocavernoso (RBC) es una prueba neurol\u00f3gica que eval\u00faa la integridad de las v\u00edas nerviosas sacras, espec\u00edficamente los arcos reflejos espinales S2-S4. Se desencadena comprimiendo el glande del pene o el cl\u00edtoris y observando o palpando una contracci\u00f3n refleja en el esf\u00ednter anal externo.<sup>1<\/sup> Este reflejo sacro oligosin\u00e1ptico est\u00e1 mediado por el nervio pudendo, con fibras sensitivas aferentes que transportan se\u00f1ales desde los genitales hasta la m\u00e9dula espinal sacra y fibras motoras eferentes que transmiten impulsos de regreso a los m\u00fasculos del suelo p\u00e9lvico.<sup>2<\/sup><\/p>\n<p>El RBC constituye uno de los pocos m\u00e9todos cl\u00ednicos para evaluar la funci\u00f3n del cono medular (extremo distal de la m\u00e9dula espinal) y de los nervios p\u00e9lvicos S2-S4.<sup>3<\/sup> En casos de lesiones medulares completas, la presencia del RBC indica arcos reflejos sacros intactos con p\u00e9rdida de la inhibici\u00f3n supraespinal (lesi\u00f3n de motoneurona superior), mientras que su ausencia sugiere una lesi\u00f3n de motoneurona inferior.<sup>4<\/sup> Esta distinci\u00f3n tiene implicaciones significativas para el diagn\u00f3stico y el tratamiento de diversas afecciones neurol\u00f3gicas que afectan a las funciones urinaria, intestinal y sexual.<sup>5<\/sup><\/p>\n<p>El estudio electrofisiol\u00f3gico del RBC consiste en aplicar estimulaci\u00f3n el\u00e9ctrica al nervio dorsal del pene o del cl\u00edtoris y medir la latencia de la respuesta refleja mediante electrodos de registro en el esf\u00ednter anal. La latencia normal para el primer componente suele ser inferior a 45 milisegundos, indicando las respuestas prolongadas o ausentes una posible patolog\u00eda neurol\u00f3gica.<sup>6<\/sup><\/p>","gt-synonyms":"Reflejo bulboesponjoso (RBE), reflejo de Osinski, reflejo cl\u00edtoro-anal (en mujeres)","gt-citation":"[1] Blaivas JG, Zayed AA, Labib KB. The bulbocavernosus reflex in urology: a prospective study of 299 patients. J Urol. 1981;126:197\u20139. DOI: 10.1016\/S0022-5347(17)54445-6\n\n[2] Previnaire JG, Soler JM, Alexander MS, Courtois F, Elliott S, McLain A. Prediction of sexual function following spinal cord injury. Spinal Cord Ser Cases. 2017;3:17096. DOI: 10.1038\/s41394-017-0012-0\n\n[3] Kirshblum SC, Burns SP, Biering-Sorensen F, Donovan W, Graves DE, Jha A, et al. International standards for neurological classification of spinal cord injury (revised 2011). J Spinal Cord Med. 2011;34:535\u201346. DOI: 10.1179\/204577211X13207446293695\n\n[4] Alexander MS, Marson L. The neurologic control of arousal and orgasm with specific attention to spinal cord lesions: integrating preclinical and clinical sciences. Auton Neurosci. 2017;209:51-59. DOI: 10.1016\/j.autneu.2017.05.001\n\n[5] Alexander MS, Biering-Sorensen F, Bodner D, Brackett NL, Cardenas D, Charlifue S, et al. International standards to document remaining autonomic function after spinal cord injury. Spinal Cord. 2009;47:36\u201343. DOI: 10.1038\/sc.2008.121\n\n[6] Lavoisier P, Proulx J, Courtois F, De Carufel F, Durand LG. Bulbocavernosus reflex: its validity as a diagnostic test of neurogenic impotence. J Urol. 1989;141(2):311-4. DOI: 10.1016\/s0022-5347(17)40753-1","gt-clinical-context":"<p>El reflejo bulbocavernoso (RBC) act\u00faa como una herramienta de evaluaci\u00f3n neurol\u00f3gica fundamental en diversos escenarios cl\u00ednicos, especialmente en la valoraci\u00f3n de pacientes con sospecha de trastornos neurol\u00f3gicos que afectan a los segmentos espinales sacros.<sup>1<\/sup><\/p>\n<p>En pacientes con lesi\u00f3n medular (LM), el RBC ayuda a distinguir entre lesiones de la motoneurona superior (MNS) y de la motoneurona inferior (MNI), lo que conlleva profundas implicaciones para el pron\u00f3stico y los enfoques terap\u00e9uticos.<sup>2<\/sup> Las lesiones de la MNS (RBC presente) se asocian con hiperactividad del detrusor y del recto, erecci\u00f3n refleja y eyaculaci\u00f3n, mientras que las lesiones de la MNI (RBC ausente) se presentan t\u00edpicamente con arreflexia del detrusor, par\u00e1lisis fl\u00e1cida del esf\u00ednter estriado y una disfunci\u00f3n sexual m\u00e1s grave.<sup>3<\/sup><\/p>\n<p>El RBC es especialmente valioso para diferenciar entre el s\u00edndrome del cono medular y el s\u00edndrome de cauda equina en pacientes con lesiones toracolumbares.<sup>4<\/sup> Tambi\u00e9n desempe\u00f1a un papel crucial en la evaluaci\u00f3n de pacientes con retenci\u00f3n urinaria, la cual puede estar causada por afecciones de los nervios p\u00e9lvicos o de la cauda equina.<sup>5<\/sup><\/p>\n<p>En el contexto de la disfunci\u00f3n er\u00e9ctil, la evaluaci\u00f3n del RBC ayuda a identificar causas neurog\u00e9nicas subyacentes. Los varones con lesiones de la MNI (RBC ausente) suelen responder mal a la estimulaci\u00f3n vibratoria peneana para la eyaculaci\u00f3n y a menudo requieren inyecciones intracavernosas para la disfunci\u00f3n er\u00e9ctil.<sup>6<\/sup> Por el contrario, los varones con lesiones de la MNS (RBC presente) pueden beneficiarse de diferentes abordajes terap\u00e9uticos.<\/p>\n<p>El procedimiento de exploraci\u00f3n del RBC es relativamente sencillo y puede realizarse a la cabecera del paciente sin equipo especializado, lo que lo convierte en una herramienta diagn\u00f3stica accesible en diversos entornos cl\u00ednicos. Para una evaluaci\u00f3n m\u00e1s precisa, el estudio electrofisiol\u00f3gico del RBC puede proporcionar mediciones objetivas de la latencia del reflejo, lo que permite revelar anomal\u00edas neurol\u00f3gicas sutiles no evidentes en la exploraci\u00f3n cl\u00ednica.<sup>4<\/sup><\/p>","gt-related-evidence":null,"gt-featured":false,"gt-ai-referenced":true,"gt-view-count":2},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Reflejo bulbocavernoso: evaluaci\u00f3n de las v\u00edas sacras<\/title>\n<meta name=\"description\" content=\"El reflejo bulbocavernoso eval\u00faa las v\u00edas nerviosas sacras mediante la contracci\u00f3n anal tras el est\u00edmulo genital, clave en el diagn\u00f3stico neurol\u00f3gico.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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