Depolarization vs Repolarization Explained | EKG PQRST Wave Made Simple for Nursing Students & NCLEX

Master depolarization vs repolarization in under 6 minutes! In this SimpleNursing mini-lesson, we break down one of the most important cardiac fundamentals you’ll use for the NCLEX, EKG interpretation, and clinicals. If you’ve ever been confused by the PQRST wave, atria vs ventricles, or how sodium, potassium, and calcium create heart rhythms—this video makes it simple and sticky. Helpful Links: Depolarization vs Repolarization of the Heart: https://simplenursing.com/depolarization-vs-repolarization/?utm_content=depolar_repolar_heart_mini&utm_source=youtube.com&utm_medium=referral Anatomy & Physiology with FREE download: https://simplenursing.com/anatomy-and-physiology/?utm_content=depolar_repolar_heart_mini&utm_source=youtube.com&utm_medium=referral EKG Rhythms FREE download: https://simplenursing.com/ekg-interpretation-rhythms-strips-cheat-sheet/?utm_content=depolar_repolar_heart_mini&utm_source=youtube.com&utm_medium=referral 🌟 What You’ll Learn - The difference between depolarization (contract) and repolarization (relax) - How sodium, potassium, and calcium create heart action potentials - How to read the PQRST complex on an EKG - Why understanding this improves your ability to interpret arrhythmias - How this knowledge shows up on the NCLEX and in clinical practice ⏱ Timestamps 0:00 – Intro 0:15 – Why depolarization & repolarization matter 0:56 – What depolarization actually means 1:13 – What repolarization means (relax/reset) 1:22 – Simple memory trick: Do This vs Relax/Reset 1:39 – Why these electrical phases matter clinically 2:16 – What happens inside heart cells (Na+, K+, Ca++) 2:58 – The PQRST wave explained 3:10 – P wave: atrial depolarization 3:19 – PR segment: signal slows at AV node 3:28 – QRS complex: ventricular depolarization 3:40 – ST segment: end of ventricular depolarization 3:47 – T wave: ventricular repolarization 4:00 – Why mastering this helps with EKGs & arrhythmias 4:39 – Quick recap 5:02 – Final thoughts & how to simplify nursing school 🎓 Want to Study Less & Pass More? Get full access to: ✔ 1,200+ animated nursing videos ✔ Topic-specific study guides ✔ NCLEX-style practice questions ✔ Step-by-step fundamentals lessons 👉 Try SimpleNursing for FREE and start making nursing knowledge stick: https://shorturl.at/vE0L4 👍 Like, Share & Subscribe For more bite-size nursing lessons that actually stick. Stick with the winners. We stick to the facts — so they stick with you. #EKG #NursingSchool #NCLEX #CardiacNursing #Depolarization #Repolarization #SimpleNursing #NursingStudent #PQRST #EKGBasics #StudyNursing #NurseLife