A 65 year old male is pulseless and apneic. Bystander CPR has been in progress for 5 minutes. His ECG is below. What is your initial treatment?

Cardiac muscle is different from smooth muscle in the fact that it has:

Stimulation of a beta-1 receptor in the heart will cause which of the following to occur?

A parasympatholytic agent used to treat symptomatic bradycardia is:

On a cardiac monitor that is properly calibrated, ten small vertical boxes on the ECG tracing is equivalent to how many millivolts?

You are treating a 16 year-old male that has a history of Wollf-Parkinson-White (WPW) syndrome. This patient may be at risk for a tachyarrhythmia due to what abnormal accessory pathway?

A 79 year old female complains of excruciating chest pain. The 15 lead ECG reveals an inferior wall injury with right-sided involvement. Vital signs are BP 88/60, P 56, R 24. Which of the following medications would be most beneficial for this patient?

Which of the following represents the correct medication therapy for the below ECG:

Which of the following represents the correct dose of Epinephrine for an adult patient in ventricular arrest?

Blood entering into the left atrium arrives via the: