What is drug dependency?

Your patient is a 45-year-old man suffering from chest pain. Upon arrival, the patient is pale, sweaty, and short of breath. The patient is angry with his daughter for calling 911. He says that he had some spicy sausage for breakfast and has indigestion. Which of the following is an appropriate means of getting the patient the care he needs?

A) Try to find out why the patient does not want to go to the so you can answer his objection and get him to the hospital. B) Call the patient's neighbors and tell them that you have been called to the patient's house but he is now refusing care. C) Inform the patient that if he does not agree to treatment, you will have to take him against his will because he has a potentially life-threatening problem. D) Tell the patient that his pain is likely caused by his diet, suggest he take an antacid, and go to bed.

All of the following are true of a radionuclide effective half-life EXCEPT:

a. It takes into account the relationship between physical and biologic half-lives. b. It is the product of the physical and biologic half-lives divided by the sum of the physical and biologic half-lives. c. It is always shorter than either the physical half-life or biologic half-life. d. It is of little importance as a consideration of radionuclides used for medical diagnosis.