J Emerg Med
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Severe, acute cyanide poisoning is uncommon and can be very difficult to diagnose if a history of exposure is unavailable. Victims of smoke inhalation may have significant cyanide poisoning as well as carbon monoxide toxicity. The Lilly Cyanide Antidote Kit currently available in America unfortunately has its own inherent toxicity. ⋯ Case reports of human cyanide poisoning treated with hydroxycobalamin/sodium thiosulfate have been published only in French. Animal and human data on the use of this antidotal combination are reviewed. Hydroxycobalamin/sodium thiosulfate is an efficacious cyanide antidote with little inherent toxicity.
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Comparative Study Clinical Trial
Performance of disposable needle syringe systems for local anesthesia.
The performance of different disposable needle syringe systems was determined by measuring needle-puncture pain, needle-bending forces, and the fluid dynamics of the systems. Thirty-gauge needles cause less needle-puncture pain than any other needle. The force required to bend the 30-gauge needle irreversibly was lower than that for the other needles. ⋯ On the basis of the results of this study, 30-gauge needles attached to 10-mL syringes are recommended for infiltration anesthesia, and 25-gauge needles with 10-mL syringes are advocated for regional nerve blocks. In infiltration anesthesia, the local anesthetic agent should be injected slowly into the subdermal tissue over a 10-second period. When performing regional nerve blocks, it is also advisable to inject the local anesthetic agent over a 10-second time interval.
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To gather information about paramedic use of 11 advanced life-support (ALS) procedures, 74 emergency physicians and 171 paramedics practicing in Utah were surveyed. Response was 66% and 65%, respectively. Performance difficulty, frequency of use, and success rate were evaluated. ⋯ The number of attempts and the success rate was significantly higher (P less than .05) for paramedics with secondary medically affiliated employment. Paramedics were significantly more willing to perform 7 of the 11 procedures (P less than .001) than physicians were willing to order. We conclude that paramedic and physician difficulty ratings were generally similar, that many types of ALS procedures are rarely performed, that a small percentage of paramedics perform the largest number of ALS procedures, that secondary employment increases paramedics' procedural attempts and improves success rates, and that they are more willing to perform ALS procedures than physicians are to order them.
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Case Reports
Retropharyngeal calcific tendinitis: report of five cases and review of the literature.
Retropharyngeal calcific tendinitis is an inflammation of the longus colli muscle tendon, which is located on the anterior surface of the vertebral column extending from the atlas to the third thoracic vertebra. Five cases of acute retropharyngeal calcific tendinitis seen in the emergency department (ED) over a 15-month period are reported. In addition, a retrospective review of four cases diagnosed as retropharyngeal abscess and admitted to the hospital revealed that two of these cases actually represented retropharyngeal calcific tendinitis. ⋯ For those primary care physicians who must evaluate patients with acute cervical pain, sore throat, or odynophagia, an x-ray study of the neck revealing retropharyngeal calcium deposition should raise the question of the diagnosis of acute retropharyngeal tendinitis. Clinical characteristics of this entity include a painful condition which is treatable and is often mistaken for retropharyngeal abscess, pharyngitis, or peritonsillar abscess. In our opinion, this condition may be more prevalent than the literature suggests.