Basic Dysrhythmia study guide test 2|Correctly
solved answers |100% pass | 2024
Know how to measure the PR interval ( PRI) - ✅✅From where the P wave begins until the
beginning of the QRS complex. 0.12 to 0.20 seconds (3 to 5 small boxes) in adults, longer in
elderly people.
Know how to measure the QRS - ✅✅From the end of the PR interval to the end of the S wave.
0.08 to 0.10 seconds. (2-2 1/2 boxes)
Know the normal values for the PRI and the QRS - ✅✅PRI = 0.12 - 0.20 or 3-5 boxes
QRS = 0.08 - 0.10 or 2- 2 1/2 boxes
Know what electrical activity triggers which mechanical event. For example what electrical
event represents atrial contraction? - ✅✅P wave (deflection wave/atrial depolarization);
QRS complex (venticular depolarization);
T wave (ventricular repolarization)
Know the blood circulation through the heart, starting from the superior vena cava and
progressing through the right side of the heart, the lungs and the left side, ending up finally going
through the aortic valve and into the aorta. - ✅✅Suerior Vena Cava - Right Atria- Tricuspid
Valve - Right Ventricle - Pulmonary Valve - Pulmonary Artery - Rt & Left Lungs - pulmonary
veins - Left Atria - Mitral Valve - Left Ventricle - Aortic Valve - Ascending Aorta and coronary
arteries
