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A short PR interval (of less than 120ms) may be associated with a Pre-excitation syndromes such as Wolff–Parkinson–White syndrome or Lown–Ganong–Levine syndrome, and also junctional arrhythmia like atrioventricular reentrant tachycardia or junctional rhythm. A variable PR interval may indicate other types of heart block. [citation needed]
Lown–Ganong–Levine syndrome (LGL) is a pre-excitation syndrome of the heart. Those with LGL syndrome have episodes of abnormal heart racing with a short PR interval and normal QRS complexes seen on their electrocardiogram when in a normal sinus rhythm .
The diagnosis of WPW occurs with a combination of palpitations and when an electrocardiogram (ECG) show a short PR interval and a delta wave. [3] It is a type of pre-excitation syndrome. [3] WPW syndrome may be monitored or treated with either medications or an ablation (destroying the tissues) such as with radiofrequency catheter ablation. [4]
The presence of a short PR interval and a delta wave (Wolff-Parkinson-White syndrome) is an indication of the existence of ventricular pre-excitation. [1] Significant left ventricular hypertrophy with deep septal Q waves in I, L, and V4 through V6 may indicate hypertrophic obstructive cardiomyopathy. [1]
Video explanation. Author: Tanner Marshall, MS Editor: Rishi Desai, MD, MPH, Tanner Marshall, MS Wolff-parkinson-white pattern, or WPW, is a type of heart arrhythmia caused by an accessory pathway, or an “extra” electrical conduction pathway connecting the atria and ventricles, or upper and lower chambers of the heart.
The normal PR interval is from 120 ms to 200 ms in length. This is measured from the initial deflection of the P wave to the beginning of the QRS complex. [3] In first-degree heart block, the AV node conducts the electrical activity more slowly. This is seen as a PR interval greater than 200 ms in length on the surface ECG.
Called multi-system inflammatory syndrome (MIS), this rare condition sets off severe inflammation in different parts of the body and can lead to critical health problems, long-term complications ...
Acute myocardial infarction, carotid sinus syndrome, eating disorders (such as anorexia nervosa), rhodotoxin poisoning, hypothermia, hypothyroidism, infections (such as diphtheria, acute rheumatic fever, or viral myocarditis), intrinsic disease of the SA node (such as sick sinus syndrome), Roemheld syndrome, sleep apnea; Physiological causes: