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Summary Cardiac Rhythm Blocks & Pacing – Nursing Study Guide (PDF)

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11 pages
2024/2025 Written for academic year
Institution Beckfield College
Course Nursing 217
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Struggling to remember the difference between Mobitz I and Mobitz II? Can’t keep your PQRSTs straight? This printable PDF covers everything you need to crush cardiac rhythms and pacemaker basics. You’ll Get: PQRST cardiac cycle breakdown (what’s happening, when, and why) All 4 types of heart blocks — first degree to third degree Pacemaker concepts (sensing, capture, demand, intrinsic beats) Defib vs cardioversion vs pacing — made clear, quick, and clinical Easy mnemonics and red flag cues to remember it all Perfect for: Med-Surg exams EKG interpretation NCLEX prep Clinical cheat sheet Instant PDF download — use on your device or print it!

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•Discuss what is “happening”
(PQRST). Recognize depolari
🧠 Note: Atrial repolarization is hidden in the QRS complex.
🫀 Cardiac Cycle: PQRST Breakdown

Wave Electrical Activity Mechanical Event Depolari

P wave Atrial depolarization Atria contract (systole) Depolariz

PR interval Delay at AV node (conduction pause) Blood lls ventricles N/A (paus

QRS complex Ventricular depolarization Ventricles contract (systole) Depolariz

T wave Ventricular repolarization Ventricles relax (diastole) Repolariz

, Understand the terms: Sensing
•




as they relate to pacemakers.
⚡ Pacemaker Terms Breakdown


What It Loo
Term De nition
EC

Pacemaker detects the heart’s intrinsic electrical No pacing spik
Sensing
activity beat occurs

A pacemaker spike causes the heart muscle to Spike followed
Capture
contract wave or QRS

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