You are on a scene with a patient who up until a few seconds ago was calm and compliant. Now he is brandishing a knife and threatening to kill you and your partner if you do not immediately leave. The man is intoxicated and police have been notified but have not yet arrived. Which one of the following is your BEST course of action?
A) Attempt to "talk down" the patient.
B) Encourage the man's wife to calm him down.
C) Remove yourself, your partner, and family from the house.
D) Immediately physically restrain the patient.
C
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Serum vitamin B12 is highly unstable when exposed to light and can tolerate only a single absorbance reading before breaking down. Therefore, it is not possible to generate a standard curve for B12. When the concentration of B12 must be ascertained in a p
A) Calculate the concentration of B12 directly from its absorbance in the solution using Beer's Law. B) Determine the Km and Vmax of B12 and apply those values to Ohm's Law to calculate the concentration of B12. C) Generate a standard curve using a more stable vitamin of similar chemical structure. D) Measure transmittance of B12 and create a standard curve using transmittance against concentration.
Infarctions of the inferior myocardial wall are MOST often caused by:
A) blockage of the left coronary artery. B) acute spasm of the circumflex artery. C) occlusion of the right coronary artery. D) a blocked left anterior descending artery.