Atrioventricular Nodal Re-entry Tachycardia (AVNRT) ECG скачать в хорошем качестве

Atrioventricular Nodal Re-entry Tachycardia (AVNRT) ECG

AVNRT is a paroxysmal supraventricular tachycardia that occurs due to a functional re-entrant circuit within the nodal tissue. The electrical impulse goes round and round – typically down the slow pathway and up the fast - resulting in a regular rate of QRS complexes. The ventricular rate is rapid, usually between 140 and 280 beats per minute. Anterograde activation of the ventricles via the normal pathways from the AV node results in a narrow QRS complex. However, pre-existing aberrancy (e.g., left bundle branch block), can result in AVRNT rhythms with a wide QRS complex. Putting all that together, we could thus far describe our findings on this ECG as a fast, regular rhythm with narrow QRS complexes - all typical features of a supraventricular tachycardia. Now if you look closely, you will notice that there aren’t any p waves before the QRS complexes. Instead, there is a terminal deflection right after the QRS complex. 📺 Subscribe To My Channel and Get More Great Quizzes and Tutorials    / @med4vl   #FOAMed #cardiology #ECG Disclaimer: All the information provided by Medical Education for Visual Learners and associated videos are strictly for informational purposes only. It is not intended as a substitute for medical advice from your health care provider or physician. It should not be used to overrule the advice of a qualified healthcare provider, nor to provide advice for emergency medical treatment. If you think that you or someone that you know may be suffering from a medical condition, then please consult your physician or seek immediate medical attention.