Which of the following is not a calcium channel blocker?

Which of the following is not a calcium channel blocker?

The client has a resting heart rate of 80 and a regular rhythm. What is the likely source of electrical activity in this client?

A 60-year-old woman suffers an anterior wall myocardial infarction. She recovers well initially but soon develops left heart failure. Her physician prescribes multiple medications to treat different aspects of heart failure, including isosorbide dinitrate. What is the mechanism of action of this agent?

A 52-year-old female presents to the emergency room with swelling over her right calf for the past 3 days. Her right calf is warm, erythematous, and tender to palpation. A duplex is performed and shows a deep vein thrombosis (DVT). This is her first DVT. She is started on warfarin and told that she must continue it for the next 3 months. What effect does warfarin have on the coagulation panel?

A 52-year-old woman presents to the primary care clinic with progressive weakness and muscle aches for the past month. She can still do her daily tasks but can notice a difference in her strength. When she lies down at night, her legs always ache. Her electrolytes are significant for a K⁺ of 2.9 mEq/L. She was recently started on a diuretic for peripheral edema. She is pleased that she has not had peripheral edema since starting the diuretic. What is the most appropriate diuretic to treat this patient?