BAYLOR SCOTT & WHITE EKG TEST 4 COMPLETE STUDY GUIDE AND CARDIAC RHYTHM INTERPRETATION REVIEW 2026

BAYLOR SCOTT & WHITE EKG TEST 4
COMPLETE STUDY GUIDE AND CARDIAC
RHYTHM INTERPRETATION REVIEW 2026

◉ Sinus arrhythmia.
Answer: •Rate: 60-100 bpm


•Rhythm: irregular, caring with respirations


•P:QRS: 1:1


•PR interval: 0.12-0.20 sec


•QRS complex: 0.6-0.10 sec


*Management: none; considered a normal rhythm in the very young
and very old


◉ Sinus arrhythmia Rhythm.
Answer:

,◉ Sinus Tachycardia.
Answer: •Rate: 101-150 bpm


•Rhythm: regular


•P:QRS: 1:1 (with very fast rates, P wave may be hidden in preceding
T wave)


•PR interval: 0.12-0.20 sec


•QRS complex: 0.6-10 sec


*Management:
treated only if symptomatic or patient is at risk for myocardial
damage


-treat underlying cause (hypovolemia, fever, pain)


-Bet-blockers or verapamil may be used


◉ Sinus Tachycardia Rhythm.
Answer:

, ◉ Sinus Bradycardia.
Answer: •Rate: <60bpm


•Rhythm: regular


•P:QRS: 1:1


•PR interval: 0.12-0.20 sec


•QRS complex: 0.6-0.10 sec


*Management:
-treated only if symptomatic. IV atropine or isoproterenol, and/or
pacemaker therapy may be used


◉ Sinus Bradycardia Rhythm.
Answer:


◉ Atrial Flutter.
Answer: •Rate: atrial 240-360 bpm; ventricular rate depends on
degree of AV block and usually is < 150 bpm