https://ecgvn.com/en/tags/r-wave/ Recent content in R Wave on ECG Library – LITFL Basics Hugo en-us Thu, 04 Feb 2021 00:00:00 +0000 https://ecgvn.com/en/posts/r-wave/ Thu, 04 Feb 2021 00:00:00 +0000 https://ecgvn.com/en/posts/r-wave/ <p><a href="https://litfl.com/ecg-library/basics/">↪  ECG Basics Homepage</a></p> <h4 id="r-wave-overview">R wave Overview</h4> <p>The R wave is the first upward deflection after the P wave. The R wave represents early ventricular depolarisation</p> <p><img alt="ECG basics: waves, segments and intervals LITFL ECG library" loading="lazy" src="https://litfl.com/wp-content/uploads/2018/10/ECG-waves-segments-and-intervals-LITFL-ECG-library-3.jpg"></p> <h4 id="abnormalities-of-the-r-wave">Abnormalities of the R wave</h4> <p>There are three key R wave abnormalities:</p> <ol> <li>Dominant R wave in V1</li> <li>Dominant R wave in aVR</li> <li>Poor R wave progression</li> </ol> <hr> <h3 id="1-dominant-r-wave-in-v1">1. Dominant R wave in V1</h3> <h5 id="causes-of-dominant-r-wave-in-v1">Causes of Dominant R wave in V1</h5> <ul> <li>Normal in children and young adults</li> <li><a href="https://litfl.com/right-ventricular-hypertrophy-rvh-ecg-library/">Right Ventricular Hypertrophy</a> (RVH) <ul> <li><a href="https://litfl.com/ecg-changes-in-pulmonary-embolism/">Pulmonary Embolus</a></li> <li>Persistence of <a href="https://litfl.com/paediatric-ecg-interpretation-ecg-library/">infantile pattern</a></li> <li>Left to right shunt</li> </ul> </li> <li><a href="https://litfl.com/right-bundle-branch-block-rbbb-ecg-library/">Right Bundle Branch Block</a> (RBBB)</li> <li><a href="https://litfl.com/posterior-myocardial-infarction-ecg-library/">Posterior Myocardial Infarction</a> (ST elevation in Leads V7, V8, V9)</li> <li><a href="https://litfl.com/pre-excitation-syndromes-ecg-library/">Wolff-Parkinson-White</a> (WPW) Type A</li> <li><a href="https://litfl.com/ecg-limb-lead-reversal-ecg-library/">Incorrect lead placement</a> (e.g. V1 and V3 reversed)</li> <li><a href="https://litfl.com/dextrocardia-ecg-library/">Dextrocardia</a></li> <li><a href="https://litfl.com/hypertrophic-cardiomyopathy-hcm-ecg-library/">Hypertrophic cardiomyopathy</a></li> <li>Dystrophy <ul> <li>Myotonic dystrophy</li> <li>Duchenne Muscular dystrophy</li> </ul> </li> </ul> <hr> <h5 id="examples-of-dominant-r-wave-in-v1">Examples of Dominant R wave in V1</h5> <h6 id="normal-paediatric-ecg-2-yr-old">Normal paediatric ECG (2 yr old)</h6> <p><a href="https://litfl.com/wp-content/uploads/2018/08/Normal-paediatric-ECG-R-wave.jpg"><img alt="Normal paediatric ECG R wave" loading="lazy" src="https://litfl.com/wp-content/uploads/2018/08/Normal-paediatric-ECG-R-wave.jpg"><img alt="Normal paediatric ECG R wave" loading="lazy" src="https://litfl.com/wp-content/uploads/2018/08/Normal-paediatric-ECG-R-wave.jpg"></a></p>