An artificial atrial pacemaker stimulates the atria to generate a rhythm. The most common type is AAI, where the atria are sensed to detect if there is an adequate intrinsic rhythm and pacing is only delivered if required. This causes a pacemaker spike before the p wave.
- Thaler, MS (2018) - The Only EKG Book You'll Ever Need, 9th edn, Lippincott Williams and Wilkins
- Wagner, GS and Strauss, DG (2013) - Marriott's Practical Electrocardiography, 12th edn, LWW
- Goldberger, A (2006) - Clinical Electrocardiography: A Simplified Approach, 9th edn, Elsevier
- Michele Kunz (2009) - EKG Training: Watching and Interpreting the Defibrillator Monitor, (Accessed: 06/09/2019)
- Simple Nursing (2019) - EKG Pacemakers with Nurse Blake, (Accessed: 07/09/2019)
Groups of Signs
This ECG is from an elderly woman who presented with 2 hours of chest pain on a background of multiple stents, a pacemaker, stroke and COPD.
This ECG shows paced rhythm with excessively discordant ST segments (modified Sgarbossa positive). The cause was a 95% thrombotic lesion of the RCA.
This ECG is from a man in his 50s who presented with chest pain on a background of previous CABG and dual chamber pacemaker. This was the second repeat ECG after intervention.
This ECG shows dual chamber paced rhythm with some native beats.
This ECG is from a man in his 50s who presented with chest pain on a background of previous CABG and dual chamber pacemaker. This was the repeat ECG post intervention.
This ECG shows atrial pacing with resolved ST elevation but T wave inversion in inferior leads and upright T wave in aVL. The cause was an inferior and right ventricular MI.
Where did they come from?
These ECGs were collected from Free Open Access Medical Education (#FOAMed) blogs, with the permission of their authors. You can find out more about each ECG's source by clicking on it.
Why are they here?
This is an experiment in digital curation. The idea is to collect resources to increase awareness and accessibility. Over time, more ECGs in the collection will be tagged to make it easier to find them and reused in new interactive quizzes.
How can I use these ECGs?
You can use these ECGs for your own learning, teaching or research - as long as you abide by the terms of each ECG's copyright licence as stipulated by the original author.