A defect in the mitral valve would allow blood to backflow into the

A 55-year-old patient presents with a wide complex tachycardia at a rate of 160. His blood pressure is 80/60 and he is confused and lethargic. You should:

The primary intracellular(inside the cell) cation is:

While an impulse travels through the AV junction, it is slowed down. This allows:

What is the appropriate formula for calculating cardiac output?

On an EKG rhythm strip, the T wave represents:

The above ECG strip is six seconds in length. What is the approximate rate? (Use the “6 second method”)

When, during repolarization, would a sufficiently strong impulse be able to retrigger depolarization?

Which ECG rhythm is characterized by a PR interval that gets longer and longer, until it drops a QRS complex?

Which of the following are characteristics of ventricular tachycardia?