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BACKGROUND: Prior research has revealed that cervical collars elevate intracranial pressure (ICP) in patients with traumatic brain injury. Two recent small studies evaluated the change in optic sheath nerve diameter (ONSD) measured by ultrasound as a proxy for ICP following cervical collar placement in healthy volunteers. OBJECTIVE: We sought to validate the finding that ONSD measured by ultrasound increases after cervical collar placement within an independent data set. METHODS: This was a prospective, crossover study involving volunteers. Participants were randomized to either have the ONSD measured first without a cervical collar or initially with a cervical collar. Two sonographers performed independent ONSD diameter measurements. Continuous data were analyzed by matched-paired t-tests. Alpha was set at 0.05. The primary outcome parameter was the overall mean difference between ONSD measurements with the cervical collar on and off. Multiple linear regression was performed to examine the relationship between variables and the primary outcome parameter. RESULTS: There were 30 participants enrolled in the study. Overall mean ONSD for participants without the collar was 0.365 ± 0.071 cm and with the collar was 0.392 ± 0.081 cm. The mean change in ONSD for participants with and without the collar was 0.026 ± 0.064 cm (95% confidence interval of difference: 0.015-0.038; P < 0.001). Multiple regression analysis did not identify any variables associated with the variation in ONSD observed for collar versus noncollar. CONCLUSIONS: We confirmed that ONSD does vary by a measurable amount with placement of a rigid cervical collar on healthy volunteers when assessed by ultrasound.
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Acute urinary retention is a common problem in the emergency department. Patients can present in significant distress, necessitating the placement of a urinary catheter. Foley catheter placement can be difficult to accomplish depending on the etiology of the retention and the degree of the obstruction. In the case presented here, we used ultrasound guidance, a guidewire, and a Foley catheter to successfully relieve a patient's urinary retention after multiple failed attempts.
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On June 7, 2013, a man was diagnosed in a Texas hospital with rabies. He had been detained in a U.S. detention facility during his infectious period. To identify persons exposed to rabies who might require rabies postexposure prophylaxis (PEP), CDC and the Texas Department of State Health Services (DSHS) conducted investigations at four detention facilities, one medical clinic, and two hospitals. In all, 25 of 742 persons assessed for rabies exposure were advised to receive PEP. Early diagnosis of rabies is essential for implementation of appropriate hospital infection control measures and for rapid assessment of potential contacts for PEP recommendations.
Asunto(s)
Exposición a Riesgos Ambientales/efectos adversos , Prisiones , Rabia/diagnóstico , Adulto , Resultado Fatal , Guatemala/etnología , Humanos , Masculino , Profilaxis Posexposición , Práctica de Salud Pública , Rabia/prevención & control , Medición de Riesgo , TexasRESUMEN
We report a case of a 22-year-old man who presented to the emergency department (ED) with altered mental status and was diagnosed with eosinophilic meningitis due to Angiostrongylus cantonensis (AC) acquired in the United States after exposure to snails.
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Angiostrongylus cantonensis , Eosinofilia/parasitología , Meningitis/parasitología , Infecciones por Strongylida/diagnóstico , Animales , Servicio de Urgencia en Hospital , Eosinofilia/diagnóstico , Eosinofilia/patología , Humanos , Masculino , Meningitis/diagnóstico , Meningitis/patología , Caracoles/parasitología , Infecciones por Strongylida/patología , Adulto JovenRESUMEN
Bedside ultrasound (US) was introduced to the emergency department more than 20 years ago. Since this time, many new applications have evolved to aid the emergency physician in diagnostic, procedural, and therapeutic interventions and the scope of bedside ultrasound continues to grow. Many US scanning techniques easily translate from adult applications to the pediatric population. Consequently, US has been adopted by many pediatric emergency providers. This article reviews the use of bedside ultrasound in pediatric emergency medicine.