Comprehensive tutorial on ECG interpretation, covering normal waves, durations, intervals, rhythm and abnormal findings. From basic to advanced ECG reading. Includes a complete e-book, video lectures, clinical management, guidelines and much more.

Oct 8, 2024 · Special interests in diagnostic and procedural ultrasound, medical education, and ECG interpretation. Co-creator of the LITFL ECG Library. Twitter: @rob_buttner.

Dec 31, 2024 · Normal 12-lead ECG Features of a normal ECG. Heart rate: 60 – 100 beats per minute; Rhythm: regular, originating from the sinoatrial node (sinus rhythm) Cardiac axis: between -30° and +90° P waves: present, and each P wave is followed by a QRS complex; PR interval: 120-200 ms (3-5 small squares)

A normal ECG is illustrated above. Note that the heart is beating in a regular sinus rhythm between 60 - 100 beats per minute (specifically 82 bpm). All the important intervals on this recording are within normal ranges.

Normal = 0.42 s. causes of small, flattened or inverted T waves are numerous and include ischaemia, age, race, hyperventilation, anxiety, drinking iced water, LVH, drugs (e.g. digoxin), pericarditis, PE, intraventricular conduction delay (e.g. RBBB)and electrolyte disturbance. The 12 lead ECG library - ecglibrary.com.

Feb 28, 2011 · A simple, step-by-step guide to reading an ECG (also known as ECG interpretation), with included ECG examples and ECG quiz questions.

Jan 18, 2025 · Sinus rhythm (which is the normal rhythm) has the following characteristics: (1) heart rate 50–100 beats per minute; (2) P-wave precedes every QRS complex; (3) the P-wave is positive in lead II and (4) the PR interval is constant.