Beaumont RN Critical Care Class Exam Actual Questions and Answers 202.docx

Beaumont RN Critical Care Class
Exam Actual Questions and Answers
202
cardiac conduction system -
correct answer ✅a system of specialized muscle tissues that
conducts electrical impulses that stimulate the heart to beat


SA-Atria-AV Node-Bundle of His-Bundle Branch-Purkinje Fibers-
Ventricles


SA node (sinoatrial node) -
correct answer ✅-the pacemaker of the heart
-sets the heartbeat rate
-located in the right atrium
-causes atria to contract
-60-100 bpm


AV node (atrioventricular node) -
correct answer ✅Conduction relay node between the atria and
ventricles. Signal from the SA node travels through the AV node to
the ventricles


40-60 bpm

, Beaumont RN Critical Care Class
Exam Actual Questions and Answers
202

EKG strip -
correct answer ✅One small box is .04 seconds.


5 small boxes make up one large box which is .2 seconds.


5 large boxes is 1 full second.


EKG strip facts: each little box equals? -
correct answer ✅0.04


P wave -
correct answer ✅atrial depolarization


PR interval -
correct answer ✅0.12-0.20


QRS complex -
correct answer ✅ventricular depolarization and atrial
repolarization