Skip to content
ECG learning
  • Register now
  • The ECG Book
      • INTRODUCTION
          • Clinical electrocardiography and ECG interpretation
          • Cardiac electrophysiology: action potential, automaticity and vectors
          • The ECG leads: from electrodes to the 12-Lead
          • The Cabrera format of the 12-lead ECG
          • ECG interpretation: Characteristics of the normal ECG
          • A systematic approach to ECG interpretation
          • P-wave, PR interval, PR segment
          • The QRS complex
          • The ST segment
          • The T-wave
          • QT & corrected QT (QTc) duration
          • The electrical axis of the heart
      • ARRHYTHMIAS
          • Mechanisms of cardiac arrhythmias
          • Aberrant ventricular conduction
          • Premature ventricular beats
          • Premature atrial beats
          • Sinus rhythm
          • Sinus arrhythmia
          • Sinus bradycardia
          • Chronotropic incompetence
          • Sinoatrial arrest & sinoatrial pause
          • Sinoatrial block (SA block)
          • Sinus node dysfunction (SND) and sick sinus syndrome (SSS)
          • Sinus tachycardia
          • Atrial fibrillation
          • Atrial flutter
          • Atrial rhythm & tachycardia
          • Atrioventricular nodal reentry tachycardia (AVNRT): ECG features & management
          • Pre-excitation, WPW & AVRT
          • Junctional rhythm & tachycardia
          • Ventricular rhythm
          • Ventricular tachycardia (VT)
          • Long QT syndrome (LQTS)
          • Ventricular fibrillation, PEA and SCA
          • Pacemaker mediated tachycardia (PMT)
          • Diagnosis and management of tachycardias
      • MYOCARDIAL ISCHEMIA
          • Introduction to ischemic heart disease
          • Classification of Acute Coronary Syndromes (ACS)
          • Clinical application of the ECG
          • Diagnostic Criteria for AMI
          • Myocardial reactions in ischemia
          • The left ventricle in AMI
          • Factors that modify the course in AMI
          • ECG in myocardial ischemia: ST-T changes
          • ST segment depression
          • ST segment elevation
          • STEMI without ST elevations
          • T-waves in ischemia
          • Pathological Q-waves & R-waves
          • Left bundle branch block (LBBB) in AMI
          • Other ECG changes in ischemia
          • Conduction defects in ischemia
          • Localization of myocardial infarction
          • Assessment of reperfusion
          • Approach to patients with chest pain
          • NSTEMI (Non ST Elevation Myocardial Infarction) & Unstable Angina
          • STEMI (ST Elevation Myocardial Infarction)
      • CONDUCTION DEFECTS
          • Overview of atrioventricular (AV) blocks
          • First-degree AV block (AV block I)
          • Second-degree AV block: Mobitz type 1 & 2
          • Third-degree AV block (AV block III)
          • Management of AV blocks
          • Intraventricular conduction defects
          • Right bundle branch block (RBBB)
          • Left bundle branch block (LBBB)
          • Fascicular block (hemiblock)
          • Nonspecific intraventricular conduction delay
      • HYPERTROPHY
          • Atrial and ventricular hypertrophy & enlargement
          • Left ventricular hypertrophy (LVH)
          • Right ventricular hypertrophy (RVH)
          • Biventricular hypertrophy
          • Left and right atrial enlargement on ECG (P mitrale & P pulmonale)
      • DRUGS & ELECTROLYTES
          • Digoxin: arrhythmias, conduction defects & ECG changes
          • Antiarrhythmic drugs, beta blockers & calcium channel blockers
          • ECG changes due to electrolyte imbalance (disorder)
      • GENETICS & SYNDROMES
          • J wave syndromes
          • Brugada syndrome
          • Early repolarization pattern (syndrome)
          • Takotsubo cardiomyopathy (broken heart syndrome, stress induced cardiomyopathy)
          • Long QT syndrome (LQTS)
          • Pericarditis, myocarditis & perimyocarditis
          • Eletrical alternans: pericardial effusion & cardiac tamponade
      • EXERCISE ECG
          • Introduction to exercise stress testing
          • Exercise stress test: Indications, Contraindications, Preparation
          • Exercise protocols, evaluation & termination criteria
          • Exercise stress testing in special patient populations
          • Exercise physiology: from normal response to myocardial ischemia & chest pain
          • Evaluation of exercise stress test
  • My account
  • Videos & Tests
  • Course overview
  • Most read

The QT and QTc Interval

ECG topic Progress:
← Back to ECG lesson

Video lecture: Assessment of the QT interval (QTc interval)

Video lecture ECG interpretation and cardiac electrophysiology

You are not logged in. Please log in to view all video lectures, all chapters in the ECG book, ECG tests and much more. Log in or Register.

← Previous ECG topic Next ECG topic →

ECG course Content

Expand All | Collapse All
ECG lessons Status
1

INTRODUCTION TO ECG INTERPRETATION
  • Basic Cardiac Anatomy (Anatomy of the Heart)
  • Introduction to Electrocardiology and ECG Interpretation
  • Cardiac electrophysiology: action potentials and electrical vectors

2

THE ECG: NORMAL FINDINGS, NORMAL VARIANTS & PATHOLOGY
  • Approach to ECG Interpretation, Assessment of Rhythm and the P-wave
  • The PR Interval & PR segment
  • The QRS Complex: Q-wave, R-wave, S-wave, R-wave progression
  • The ST segment: J-point, J-60 point, ST depression, ST elevation
  • The T-wave: T-wave inversions, hyperacute T-waves, large T-waves, flat T-waves
  • The QT and QTc Interval
  • The Electrical Axis of the Heart

ECG testsStatus
1

ECG TEST 1

Chapters

  • Introduction to ECG
  • Cardiac arrhythmias
  • Myocardial ischemia
  • Conduction defects
  • Hypertrophy
  • Drugs & electrolytes
  • Genetics & syndromes
  • Exercise stress testing
  • Videos & tests

More

  • About
  • Our friends
  • Contact & support

Learn ECG Interpretation

This e-book and course covers all topics from basic cardiac electrophysiology to advanced ECG interpretation. It is suitable for physicians, assistant physicians, nurses, paramedics, biomedical analysts, students and researchers. The content is in line with guidelines issued by the American Heart Association (AHA), American College of Cardiology (ACC) & the European Society for Cardiology (ESC).

Copyright © 2018 | All Rights Reserved (US CR, EU PP)

error: Contact us for permission to use contents. Permission will be granted for non-profit sites.