Cardiac

Question 1

For which rhythms is cardioversion indicated?

Answer 1

A fib, A flutter and supraventrucular tachycardia

Question 2

Why should Metoprolol not be given to a PT with a 2nd degree AV block?

Answer 2

Metoprolol would further slow down the heart rate and worsen the block.

Question 3

What is the effect of Ondansetron on the heart?

Answer 3

Prolongs QT (cardiac output).

Question 4

Characteristics of a junctional rhythm?

Answer 4

1) Narrow QRS
2) Slow ( < 60 bpm); when faster, is referred to as a junction all escape rhythm.
3) P Wave is hidden in QRS or can be inverted

Question 5

Hypertension is a risk factor for developing which cardiac rhythm?

Answer 5

A Flutter

Question 6

Which lab value is of concern in a PT with Rhabdomyolysis?

Answer 6

Hyperkalemia

Question 7

Which medication should be given to a PT with Rhabdomyolysis and a serum potassium of 7.0? Why?

Answer 7

Calcium Gluconate - IV Calcium Gluconate will prevent ventricular dysrhythmias by stabilizing the action potentials of the myocardial cells.

Question 8

Magnesium Sulfate is given for which cardiac rhythm?

Answer 8

Torsades de Pointes

Question 9

Briefly describe the use Central Venous Pressure monitoring.

Answer 9

CVP is a measure of BP in the right venae cavae near the right atrium. It reflects preload and changes in response to infusions of IV fluids. Normal CVP is 3 to 8 mmHg.

Question 10

How do you treat Cardiogenic shock?

Answer 10

Fluids and plasma
Meds to increase hearts pumping abilities - ie digoxin
Also give meds such as Levophed or dopamine

Question 11

What is Cardiac Index?

Answer 11

It’s a measure of Cardiac Output/Body Surface Area. It relates heart performance to the size of the individual. Normal = 2.6 to 4.2 L/min.
CI below 2.6 May indicate cardiogenic shock.