QRS complex ECG (EKG) interpretation and measurement explained. In this ECG interpretation review, you'll learn about the QRS complex and its measurement as a part of a review for nursing students, nurses, ACLS, NCLEX, and more. The QRS complex represents ventricular depolarization (leading to contraction of the ventricles). Atrial repolarization also occurs here, but it is not visible. Complete ECG interpretation QUIZ: https://www.registerednursern.com/ecg-ekg-interpretation-basic-quiz-nurses/ More ECG videos: https://www.youtube.com/watch?v=69-GmO4GmEY Website: https://www.registerednursern.com/ More Videos: https://www.youtube.com/watch?v=R2XMro13dD0 Nursing Gear: null Instagram: https://www.instagram.com/registerednursern_com/ Facebook: https://www.facebook.com/RegisteredNurseRNs Twitter: https://twitter.com/NursesRN Popular Playlists: NCLEX Reviews:    • NCLEX Study Strategies   Fluid & Electrolytes:    • Fluid and Electrolytes Nursing   Nursing Skills:    • Nursing Skills Videos