Ch10 ventricularrhythms-140105183556-phpapp02
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The document discusses different types of ventricular rhythms, including idioventricular rhythm, accelerated ventricular rhythm, ventricular tachycardia, polymorphic ventricular tachycardia, torsades de pointes, and ventricular fibrillation. For each rhythm, key characteristics are provided such as typical heart rate, rhythm regularity, presence of P waves, P wave to QRS ratio, PR interval, and QRS width. The document is from an ECG course chapter on ventricular rhythms by EMT/P Adam Thompson.
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This document defines and describes various types of ventricular dysrhythmias. It notes that ventricular dysrhythmias occur when the atria, AV junction, or both cannot initiate an electrical impulse or there is enhanced excitability of the ventricular myocardium. Key features include wide, bizarre QRS complexes with T waves in the opposite direction of R waves and no P waves. Specific dysrhythmias covered include premature ventricular contractions, ventricular escape rhythms, ventricular tachycardia, ventricular fibrillation, asystole, idioventricular rhythm, and pulseless electrical activity. Characteristics and identifying features of each dysrhythmia are provided.
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This document provides an overview of evaluating and treating different types of tachycardia, including:
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2) It describes differentiating between narrow and wide complex tachycardias, and the differential diagnoses for each including various types of supraventricular tachycardia and ventricular tachycardia.
3) It provides guidance on electrical and chemical therapies for terminating tachycardias, as well as long term treatment options like ablation.
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or
Graphical representation of electrical activity of heart.
As action potentials propagate through the heart, they generate electrical currents that can be detected at the surface of the body.
An electrocardiogram abbreviated either ECG or EKG is recording of these electrical signals.
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- How to analyze an ECG including calculating heart rate, assessing rhythm regularity, P waves, PR interval, and QRS duration to determine if it is a normal sinus rhythm.
- Common arrhythmias that can occur due to problems in the sinus node, atrial cells, AV junction, or ventricular cells.
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Tutorial in Basic ECG for Medical Students
This is the lecture notes that I have been giving to the medical students (2nd, 3rd, final year) for the last two years (updated 2008).
Blood supply of heart (1)
The document describes the blood supply and conduction system of the heart. It discusses the right and left coronary arteries, which are the main arteries that supply blood to the heart. It details the branches and territories supplied by each artery. It also describes the conduction system of the heart, including the sinoatrial node, atrioventricular node, bundle of His, and Purkinje fibers. It provides an overview of how electrical impulses are conducted through the heart to trigger contractions.
Shortcut to ECG
Salient features of the book are -
- The book provides a shortcut to understand and remember certain specific formulae and points you require to interpret the 12-lead ECG.
- Treatment protocols (in green boxes) for most of the important conditions are also included.
- View sample ECGs as you read along the topics.
- The content is explained in a very simple language to provide good conceptions, written from a student’s point of view.
- People can gain their belief in the book after going through sample ECGs which would be available at www.themedicalpost.net/ecg
- The book competes with the other books available in the market in simplicity, summaries, treatment protocols, live diagrams and regularly updated sample ECGs on the website.
ECG interpretation: the basics
This document provides an overview of ECG interpretation, including conduction pathways, a systematic method of interpretation, and common abnormalities seen in critical care. It discusses supraventricular and ventricular arrhythmias, bundle branch blocks, heart block, and life-threatening arrhythmias such as ventricular tachycardia, ventricular fibrillation, and asystole. It also covers the basics of 12-lead ECG interpretation including lead placement and axis.
ECG
The document provides information about electrocardiography (ECG) including its history, how an ECG machine works, how to perform an ECG, ECG waveform interpretation, and common cardiac rhythms and abnormalities. It discusses key aspects of an ECG such as rate, rhythm, cardiac axis, P waves, PR interval, and common rhythms including normal sinus rhythm, atrial fibrillation, ventricular tachycardia, and more.
Basics of ECG
This document provides an overview of electrocardiography (ECG or EKG):
- The ECG is essential for diagnosing cardiac rhythm abnormalities and chest pain, and guides treatment like thrombolysis for heart attacks.
- The history of ECG development is traced from early experiments in the 1800s to William Einthoven's invention of the first clinical ECG machine in the early 1900s.
- A normal ECG shows a regular rhythm between 60-100 beats per minute, visible P waves before each QRS complex, and normal durations for the P-R interval, QRS complex, and T wave.
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1. The document discusses the basic principles and settings of cardiovascular implantable electronic devices (CIEDs), including pacemakers.
2. It covers topics such as pacing and sensing functions, parameters like lower and upper rates, pacing modes, and refractory and blanking periods.
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This document defines and provides criteria for identifying different types of cardiac rhythms based on an electrocardiogram (ECG). It describes rhythms including sinus tachycardia, atrial ectopic, atrial fibrillation, atrial flutter, accessory-mediated supraventricular tachycardia, sinus bradycardia, first degree atrioventricular block, second degree atrioventricular block types 1 and 2, third degree atrioventricular block, ventricular ectopic, ventricular bigeminy, couplet, monomorphic ventricular tachycardia, polymorphic ventricular tachycardia, torsade de pointes, ventricular fibrillation, and asystole. For each rhythm, it
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This document provides an overview of evaluating and treating different types of tachycardia, including:
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This document provides a guide to ECGs. It begins by outlining the objectives which are to cover electrical conduction in the heart, lead placement, ECG settings, components, waves, complexes, and abnormalities. It then discusses the cardiac conduction system, ECG waves and components, 12-lead ECG placement, components of the ECG including rate, rhythm, axis, P wave, PR interval, QRS complex, QT interval, ST segment, T wave, and other waves. It provides examples of normal ECG characteristics and discusses how to systematically analyze an ECG by examining rate, rhythm, axis, P wave, PR interval, QRS complex, QT interval and QTc, ST segment, and T wave
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BY: Saiyed Falakaara
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Department of Pharmacy
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ECG
ECG is defined as “ recording of electrical activity of heart on a graph paper”.
or
Graphical representation of electrical activity of heart.
As action potentials propagate through the heart, they generate electrical currents that can be detected at the surface of the body.
An electrocardiogram abbreviated either ECG or EKG is recording of these electrical signals.
The ECG is composite record of action potentials produced by all of the heart muscle fibres during each heartbeat.
The instrument used to record the changes is an electrocardiograph.
Waveforms in ECG
Positive electrode is always a reference electrode
Depolarization wave moves towards the positive electrode gives positive deflection
Depolarization wave move away from positive electrode give the negative deflection
P wave – Atrial depolarization
QRS complex – Ventricular depolarization
T wave – Ventricular repolarization
Cardiology
This document provides information on electrocardiographic monitoring and cardiac dysrhythmias. It begins with an overview of cardiac physiology and the cardiac conductive system. It then discusses electrocardiographic monitoring, describing what an ECG measures and how electrodes are used to detect electrical activity in the heart. Different ECG leads and components of the ECG waveform are also outlined. Common dysrhythmias like sinus bradycardia and sinus tachycardia originating in the sinoatrial node are then reviewed. The document provides details on ECG interpretation and analyzing cardiac rhythms.
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- Common arrhythmias that can occur due to problems in the sinus node, atrial cells, AV junction, or ventricular cells.
- A 6-step approach for interpreting 12-lead ECGs including calculating rate, determining rhythm, assessing intervals and axis, and looking for evidence of hypertrophy or infarction
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Ch10 ventricularrhythms-140105183556-phpapp02
- 1. The ECG Course Chapter%10% Ventricular%Rhythms% Adam%Thompson,%EMT/P,%BAS%
- 3. Idioventricular Rhythm! • Rate:%20%/%40%bpm% • Rhythm:% %Regular% • P%wave:%None% • P:QRS%raIo:%None% • PR/interval:%None% • QRS%Width:%>%120%ms%(0.12%sec)%WIDE%
- 4. Accelerated Ventricular Rhythm! • Rate:%40%/%100%bpm% • Rhythm:% %Regular% • P%wave:%None% • P:QRS%raIo:%None% • PR/interval:%None% • QRS%Width:%>%120%ms%(0.12%sec)%WIDE%
- 5. Ventricular Tachycardia! • Rate:%>%100%bpm% • Rhythm:%Regular% • P%wave:%None%or%complete%AV%disassociaIon% • P:QRS%raIo:%None% • PR/interval:%None% • QRS%Width:%>%120%ms%(0.12%sec)%WIDE%
- 6. Polymorphic Ventricular Tachycardia! • Rate:%>%100%bpm% • Rhythm:%Irregular% • P%wave:%None%or%complete%AV%disassociaIon% • P:QRS%raIo:%None% • PR/interval:%None% • QRS%Width:%>%120%ms%(0.12%sec)%WIDE%
- 7. Torsades de Pointes! • Rate:%200%/%250%bpm% • Rhythm:%Irregular% • P%wave:%None% • P:QRS%raIo:%None% • PR/interval:%None% • QRS%Width:%>%120%ms%(0.12%sec)%WIDE%
- 8. Ventricular Fibrillation! • Rate:%Indeterminate% • Rhythm:%Irregular,%“ChaoIc”% • P%wave:%None% • P:QRS%raIo:%None% • PR/interval:%None% • QRS%Width:%UnidenIfiable%
- 17. The ECG Course resuscitationist@gmail.com! Subscribe%to%our%channel%