CRAT TEST BANK UPDATED QUESTIONS AND ANSWERS FULL STUDY SHEET

CRAT TEST BANK UPDATED QUESTIONS
AND ANSWERS FULL STUDY SHEET

●● Pacemaker of the heart
Answer: SA node


●● Normal conduction pathway
Answer: SA node, AV node, bundle of his, R&L bundle branches,
purkinje fibers


●● one small box measurement
Answer: 0.04 seconds 40 milliseconds


●● one large box measurement
Answer: 0.2 seconds 200 milliseconds


●● How many seconds are between three tick marks on the top of a
graph paper
Answer: 6 seconds


●● what are the normal PRI mesurements
Answer: 0.12-0.20

,●● what are the normal QRS measurements
Answer: less than 0.12


●● What does the P wave represent
Answer: atrial depolarization


●● What does the QRS represent
Answer: ventricular depolarization


●● What does the T wave represent
Answer: ventricular repolarization


●● What are the heart rates for NSR
Answer: 60-100 BPM


●● What are the heart rates for Sinus Bradycardia
Answer: less that 60 BPM


●● What are the heart rates for Sinus Tachycardia
Answer: Greater than 100 BPM

, ●● What word represents a slightly irregular rhythm or respirations
Answer: Arrhythmia


●● three methods of determining heart rate
Answer: most accurate - small squares /1500
Semi accurate - big squares /300
Generic - counting QRS's in 6 seconds, multiply by 10


●● Resting/ ready for action potential
Answer: Polarized


●● Discharge potential
Answer: Depolarized


●● Recovery potential
Answer: Repolarized


●● Gatekeeper of the heart
Answer: AV node


●● Three areas of automaticity
Answer: SA, Junctional tissue, Ventricles