Can J Emerg Med
-
To determine if peripheral venous blood gas values for pH, partial pressure of carbon dioxide (Pco(2)) and the resultant calculated bicarbonate (HCO(3)) predict arterial values accurately enough to replace them in a clinical setting. ⋯ Arterial and venous blood gas samples were strongly correlated, and there were only small differences between them. A survey of emergency physicians suggested that the differences are too large to allow for interchangeability of results; however, venous values may be valid if used in conjunction with a correction factor or for trending purposes.
-
Most emergency departments (EDs) have deficiencies in the type and quantity of antidotes readily available to treat severely poisoned patients. Undue emphasis on the purchase price of several expensive antidotes such as anti-digoxin F(ab) fragments and fomepizole may contribute to this problem by creating the perception that comprehensive antidote stocking is too costly for smaller centres. For rarely used medications, however, purchase price alone is an insufficient estimate of cost. ⋯ While other factors (antidote efficacy, safety and available alternate therapy) need to be considered, the cost of maintaining antidote availability is not determined primarily by purchase price. A change in supplier policy to free replacement on expiry for fomepizole and cyanide antidotes would have a considerable effect on making these antidotes less costly for smaller Canadian EDs.
-
Lateral canthotomy and cantholysis is a simple procedure that can be performed by emergency physicians. It has the potential to save vision, particularly in cases of blunt ocular trauma. The case of a 37-year-old man with blunt ocular trauma, a retrobulbar hemorrhage and rapidly increasing orbital pressure requiring an urgent lateral canthotomy and cantholysis is presented. Pathophysiology, indications, contraindications, procedure and follow-up care are described.
-
It is important for clinicians to be aware of the sensitivity and limitations of commonly used methods to confirm endotracheal tube placement. Overreliance on insensitive indicators can lead to delayed recognition of esophageal intubation. The case presented highlights this concern.