EMTS Paramedic Cardiology Test review QUESTIONS AND ANSWERS.

EMTS Paramedic Cardiology Test review
QUESTIONS AND ANSWERS
Rhythms with irregular R-R ? -

✅A-Fib, Sinus Arrhythmia, Wandering Pacemaker, 2nd degree type 1



Rhythms with no P waves ? -

✅SVT, Junctional escape, Idioventricular, Asystole



What does Torsades de pointes look like? -

✅It is a type of Polymorphic Tachycardia



How can you tell the difference between a PAC, PVC, PJC? -

✅- A PAC is when you have another full contraction (heartbeat) (P, QRS, T) that starts right after
you have already have a full contraction (heartbeat) (P, QRS, T).

- A PVC, you will have a QRS complex that is greater than 0.12 seconds.

- A PJC is a QRS complex that is 0.12 seconds or less, but does not have a P wave.



Preload -

✅Amount of Blood, stretch or pressure in the left ventricles at end diastole



Afterload -

✅AKA- Systemic vascular resistance (SVR)



resistance in which the left ventricle must pump to open aortic valve and push blood into systemic
circulation



What is Starlings Law? -

✅idiot version :

- increase in blood volume filling heart

, - cause increase in contractile force of heart

-Result: increase in stroke volume



Factors of Stroke Volume -

✅Preload

Afterload

Cardiac Contractility



Chronotropic, , Inotropic, Dromotropic explained -

✅are different types of cardiac drugs

( can be positive or negative effects)

-Chronotropic - rate

-Inotropic - contractility

-Dromotropic- Velocity of conduction



Refractory Period - 2 phases -

✅Absolute - heart muscle completely depolarized (unable to respond)



Relative- heart muscle partially repolarized (may respond)



P wave represents ? -

✅Depolarization of the atria



PR interval represents? -

✅Depolarization of the atria and delay of AV junction



QRS complex represents ? -

✅Depolarization of the ventricles



ST segment Represents ? -

✅period between ventricle depolarization and repolarization