First Degree AV Block | Critical Care Nursing

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► THIS VIDEO will take you on an educational journey through the world of electrocardiograms, focusing on first, second, and third-degree atrioventricular blocks. 🩺 As nursing students, you might find these topics overwhelming, but don't worry! Each block follows specific rules that we'll break down for you. By the end, you'll see it's not as daunting as you might think. 🙌

🩺 First, we'll delve into these topics, aiming to make them less daunting than they might initially appear. We'll provide you with essential insights and knowledge to help you understand these ECG patterns thoroughly. 🤓

📊 Before we dive into AV blocks, it's crucial to refresh your memory on normal sinus rhythm, which forms the basis of our understanding. This rhythm features a harmonious relationship between P waves and QRS complexes, maintaining consistent distances between P-P and R-R waves.

💡 Throughout the video, we'll follow the seven fundamental steps we've previously discussed in our videos. These steps are the building blocks to comprehending AV blocks. If you need a refresher, don't hesitate to revisit our introductory videos.

🧩 The journey starts with the electrical impulse originating in the SA node, traveling to the AV node, resulting in the P wave, and experiencing a delay in the AV node, documented as the PR segment. The impulse then causes ventricular contraction, represented by the QRS complex, and finally ends with ventricular repolarization, leading to the T wave. The ST segment captures the time between depolarization and repolarization, and you may or may not encounter the mysterious U wave.

🤯 Let's explore the intriguing world of atrioventricular (AV) blocks. These come in three flavors: 1st-degree, 2nd-degree, and 3rd-degree. Remember, 1st-degree is the least severe, while 3rd-degree raises the most significant concerns. Nestled between them is 2nd-degree, which we'll dissect further, revealing its two subtypes: Mobitz type I and Mobitz type II.

💪 Get ready for some in-depth learning! You'll discover how to distinguish these AV blocks and understand their implications in patient care. 📉

💉 In terms of treatment, we'll address the nuances of managing these blocks. For instance, 1st-degree AV block, while generally less worrisome, still requires careful observation and monitoring. We'll guide you through when intervention is necessary and when it's not. 🏥

► THE PROF 👩⚕️
Dr. Rhonda Lawes is a Certified Nurse Educator (CNE), and an Assistant Professor at the University of Oklahoma College of Nursing in Oklahoma, USA. She obtained her PhD in Educational Psychology from Oklahoma State University in 2016. 💉 Due to her achievements, she has earned numerous teaching awards. She teaches nursing students how to use the science of cognitive learning to maximize their study effectiveness. 🩺Within Lecturio, Dr. Lawes is the Director of Nursing Education Programs, and teaches courses on Pharmacology (Nursing), Medical Surgical Nursing and Pathophysiology. 📋

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Disclaimer: Lecturio offers educational content for healthcare students to prepare for exams and/or to review knowledge gained at a Medical School. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment suggestions. Our resources are strictly for educational purposes. Always consult healthcare professionals for medical concerns.

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► CHAPTERS
00:00 Introduction to Electrocardiograms
00:34 Understanding Normal Sinus Rhythm
01:28 The Seven Essential ECG Steps
03:43 Exploring Atrioventricular (AV) Blocks
03:57 Types of AV Blocks: 1st, 2nd, and 3rd Degree
04:43 Diving Deeper into 2nd-Degree AV Blocks
05:13 Questions Moment: Time to Recall the Information
06:25 Importance of Recognizing AV Blocks
07:52 Treatment and Monitoring for 1st-Degree AV Block