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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 .
Wolff–Parkinson–White syndrome (WPWS) is a disorder due to a specific type of problem with the electrical system of the heart involving an accessory pathway able to conduct electrical current between the atria and the ventricles, thus bypassing the atrioventricular node.
The most efficient way to lower your heart rate is through breathing, says Dr. Wang. “Deep exhalations can decrease your heart rate. Breathing in through the nose for the count of 4, holding it ...
Pre-excitation syndrome is a heart condition in which part of the cardiac ventricles are activated too early. [1] Pre-excitation is caused by an abnormal electrical connection or accessory pathway between or within the cardiac chambers. Pre-excitation may not cause any symptoms but may lead to palpitations caused by abnormal heart rhythms.
Pre-excitation syndrome: Romano–Ward syndrome: Scimitar syndrome: Shone's syndrome: Short QT syndrome: Sick sinus syndrome: Taussig–Bing syndrome: double outlet right ventricle (DORV) and subpulmonic VSD. a cyanotic congenital heart defect: Timothy syndrome: Townes–Brocks syndrome: Triploid syndrome: Turner syndrome: VACTERL syndrome ...
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]
A medical monitoring device displaying a normal human heart rate. Heart rate is the frequency of the heartbeat measured by the number of contractions of the heart per minute (beats per minute, or bpm). The heart rate varies according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide.