Enfoque diagnóstico del síndrome vestibular agudo en urgencias / Integral approach of acute vestibular síndrome

RESUMEN El vértigo se define como una sensación rotacional de movimiento y es uno de los principales motivos de consulta en urgencias. Aproximadamente entre el 5 y 7% de los pacientes que asisten a consulta de Medicina General han presentado esta afección en el último año. Por este motivo, es necesario tener una adecuada orientación de los casos que permita identificar su causa y diferenciar entre la patología central y periférica lo que permitirá abordar los pacientes de una manera adecuada, que permita distinguir aquellos que requieran hospitalización para estudios complementarios de los que pueden ser manejados ambulatoriamente. A continuación, revisaremos los principales síntomas clínicos, las pruebas semiológicas más utilizadas y las etiologías más relevantes para describir un abordaje sencillo de este síndrome.

SUMMARY Vertigo is defined as a sensation of rotation or imbalance and is a common complain for emergency room consultation. Approximately between 5% and 7% of patients who consulted their general physician in the last year have presented vertigo. Therefore, it is essential to have an adequate understanding of this disease to properly distinguish between the principal causes as it orients proper treatment. This article is a review of the main symptoms, frequently used clinical exams and relevant etiologies, in order to provide a simple orientation to general practitioners.

Evaluación inicial del paciente con mareos y vértigo / Initial evaluation of the patient with dizziness and vertigo

El paciente que consulta por mareos o vértigo es sin duda un desafío para el médico que trabaja en un servicio de urgencia. Esto se da en parte por la dificultad de los pacientes de definir el síntoma, a la amplia gama de diagnósticos diferenciales y su potencial riesgo de desenlace negativo, como en el caso del accidente cerebrovascular de fosa posterior. En esta revisión narrativa, el objetivo: es explicar el enfrentamiento inicial del paciente con mareos y vértigo, describir las pruebas y métodos diagnósticos complementarios, distinguir los diagnósticos diferenciales más frecuentes y explicar el manejo inicial. Método:se realizó una revisión bibliográfica de literatura científica sobre esta patología, basado en la propuesta de Edlow (2016), donde se enfatiza en un enfoque basado en temporalidad, factores desencadenantes y contexto del síntoma.(AU)

The patient who consults for dizziness or vertigo is undoubtedly a challenge for the emergency physician. This is partly due to the difficulty of the patients to define the symptom, the wide range of differential diagnoses and their potential risk of negative outcome, as in the case of posterior circulation stroke. In this narrative review, the objective is to explain the initial approach of the patient with dizziness and vertigo, describe the tests and complementary diagnostic methods, distinguish the most frequent differential diagnoses and explain the initial management. A bibliographic review of the scientific literature on this pathology was carried out, based on the proposal of Edlow (2016), which emphasizes an approach based on temporality, trigger factors and context of the symptom. (AU)

Acute Central Vertigo / 대한이비인후과학회지

Acute vertigo is a common symptom at the otolaryngology clinics or the Emergency Department. Also, many otolaryngologists see these patients first or they are referred from the Emergency Department. Although the stroke incidence in all dizzy patients is relatively low, the misdiagnosis of central vertigo may lead to serious morbidity and even mortality. Nevertheless, it is difficult to diagnose in vertigo patients whether the origin is central or not, especially at the initial visit. The purpose of this clinical review was to investigate clinical findings of acute central vertigo and to suggest the recent advance of differential diagnosis in these patients from peripheral vestibulopathy. We also suggest an appropriate practice for the radiologic investigation in these patients.

Isolated Vascular Vertigo / 대한뇌졸중학회지

Strokes in the distribution of the posterior circulation may present with vertigo, imbalance, and nystagmus. Although the vertigo due to a posterior circulation stroke is usually associated with other neurologic symptoms or signs, small infarcts involving the cerebellum or brainstem can develop vertigo without other localizing symptoms. Approximately 11% of the patients with an isolated cerebellar infarction present with isolated vertigo, nystagmus, and postural unsteadiness mimicking acute peripheral vestibular disorders. The head impulse test can differentiate acute isolated vertigo associated with cerebellar strokes (particularly within the territory of the posterior inferior cerebellar artery) from more benign disorders involving the inner ear. Acute audiovestibular loss may herald impending infarction in the territory of anterior inferior cerebellar artery. Appropriate bedside evaluation is superior to MRIs for detecting central vascular vertigo syndromes. This article reviews the keys to diagnosis of acute isolated vertigo syndrome due to posterior circulation strokes involving the brainstem and cerebellum.