In Third Degree Heart Block:

Ventricular Pacer.gif  Identify the following rhythm.

Which is the MOST effective way to terminate ventricular fibrillation?

You are called for a patient experiencing SOB. The patient is also a diabetic, so you preform a 12-lead ECG. It shows ST segment elevation in leads V 1, V 2, V 3, and V 4 with reciprocal changes in leads V 5, V 6, II, III, and aVF. You suspect:

Identify the following rhythm. Picture3.jpg 

A Fib.gif  Identify the following rhythm.

A 53 year old patient had a sudden onset of a tearing abdominal pain at the area of the umbilicus that radiates to his back. He is pale, ashen, and diaphoretic. He has a history of hypertension, for which he takes hydrochlorothiazide. Vital signs are BP 110/70, R 20. His ECG is below. How should you interpret this rhythm? 1593.jpg

In Type II Second Degree Heart Block with variable conduction, the R-R interval will: 

Perfusion to the coronary arteries occurs during

A 63-year-old male is alert and oriented, complaining of dizziness. He describes an acute onset of dizziness and near-syncope that has lasted for 15 minutes. He is also experiencing substernal chest pain radiating to his jaw, as well as nausea and weakness. Physical examination reveals cool, diaphoretic skin; delayed capillary refill; and mild crackles to the bases bilaterally. He has no significant medical history, but he takes 325 mg of aspirin a day. HR = 220, BP = 88/52, RR = 16, SaO 2 = 92%. Which of the following should be done first?