J Emerg Med
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Percutaneous central venous catheterization provides access for volume replacement and hemodynamic monitoring. This study reviewed 119 percutaneous central venous catheterizations in 112 patients over a 12-month period. All catheters were placed by emergency department (ED) physicians or housestaff under their direct guidance. ⋯ Postoperatively, five (26%) of these were converted to pulmonary artery catheters. Central venous catheters can be placed in patients percutaneously in the emergency department with minimal morbidity. They provide initial access to the central circulation for resuscitation and subsequently can be converted to pulmonary artery catheters for hemodynamic monitoring.
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The beneficial hemodynamic effects of sodium bicarbonate as treatment for tricyclic antidepressant poisoning were investigated in an animal model. Seven adult dogs (17.5 to 20 kg) were poisoned by an intravenous infusion of amitriptyline. Toxicity was defined as a doubling of the initial QRS width. ⋯ All dysrhythmias ceased within one minute of administration of sodium bicarbonate. An increase in mean blood pressure (P less than .05) and serum pH (P less than .05) and a decrease in mean QRS width (P less than .05) occurred following administration of sodium bicarbonate. The maintenance of toxicity for 30 minutes suggests that this model can be used for future studies of tricyclic antidepressant poisoning.
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A 39-year-old male arrived in the emergency department with multiple stab wounds to the chest. A pneumopericardium was present on initial chest x-ray study. ⋯ All parameters improved following removal of 100 cc of air by pericardiocentesis. The etiology, diagnosis, pathophysiology, and treatment of tension pneumopericardium are discussed.
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Poisoning by blue-green algae occurs after an algal "bloom" caused by warm weather and algal concentration. On death or disintegration, the algae release liver toxins and neurotoxins (fast death factor). Although deaths are common in animal exposures, human exposures have been limited to various allergic reactions, mild liver enzyme elevation, and gastroenteritis. A case of animal deaths and its relationship to human exposures is discussed.
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Gastric lavage or ipecac-induced emesis are routinely recommended in the management of the acutely poisoned patient. Efficacy of either procedure has not been shown. ⋯ The role of these procedures requires careful controlled evaluation. Until the publication of supportive data, their efficacy is unproven.