Five patients undergo surgery for various reasons. Each patient has a particular prior medical history. Which of the following patients would be most problematic to the anesthesiologist if thiopental is used during the surgery?

Five patients undergo surgery for various reasons. Each patient has a particular prior medical history. Which of the following patients would be most problematic to the anesthesiologist if thiopental is used during the surgery?

A 58-year-old woman with end-stage cervical cancer has undergone surgery, chemotherapy, and radiation therapy. She has chronic pelvic pain and is being treated with a fentanyl patch. Because of continued intractable pain, she places three patches on at the same time. She is found dead 6 h later by her caretaker. What is the most likely explanation for her death?

A 27-year-old man presents to the urgent care clinic with multiple painful ulcers on the shaft of his penis. Some strains of the causative virus are resistant because of a mutated thymidine kinase enzyme. Which of the following antivirals may be less effective in treating this man's infection if his strain of virus has a mutated thymidine kinase?

A 45-year-old man with an elevated bleeding time is scheduled to undergo an elective hernia repair in approximately 12 h. He is given vitamin K orally and the bleeding time is still elevated. What is the most likely explanation for this finding?

A 3-year-old girl presents to the emergency department with a history of recurrent UTIs with costovertebral angle tenderness, high fever, and dysuria. A urine culture grows gram-negative lactose-fermenting rods. The physician suspects E. coli pyelonephritis. Ciprofloxacin is highly effective against E. coli in vitro, but the physician chooses not to use it in this case. Why would she choose not to prescribe ciprofloxacin?