What is a bundle of Kent?
Bundle of Kent is an abnormal pathway present in a small percentage of the general population that results in a condition known as Wolff-Parkinson-White syndrome (WPW). The anatomic substrate is a band of myocytes that bridges the fibrous junction between the atrium and the ventricle.
What is Kent syndrome related to?
The bundle of Kent is an abnormal extra or accessory conduction pathway between the atria and ventricles that is present in a small percentage (between 0.1 and 0.3%) of the general population.
Who discovered bundle of Kent?
Discovery of the mechanism underlying WPW In 1913, Stanley Kent claimed to have described a human heart with an extra connection between right atrium and right ventricle (Fig. 4A; Kent, 1913).
What is the bundle of His made of?
The bundle of His comprises of a complex organization of cells, predominantly consisting of Purkinje-type cells, slender transitional cells, broad transitional cells, and varying amounts of pacemaker cells.
Why is it called a bundle of His?
Bundle-of-his definition It conducts the electrical impulses that regulate the heartbeat from the right atrium to the left and right ventricles. The bundle of His is named after its discoverer, German cardiologist Wilhelm His (1836–1934).
Can WPW cause torsades?
Although generally asymptomatic , the most common clinical symptom is “palpitations of the heart .” In rare, severe cases, WPW has been linked to Torsades de pointes and sudden cardiac death .
What is WPW pattern type B?
Type B has a predominantly negative delta wave and QRS complex in V1 and V2 and becomes positive in transition to the lateral leads, much as in left bundle-branch block (LBBB).
How was WPW discovered?
In 1930, Wolff, Parkinson and White described a distinct electrocardiograph (ECG) pattern in healthy young people with short bursts of tachycardia. In 1933, other doctors noted the reason for this irregular rhythm was a faster passage of impulses traveling through the ventricles.
Where is the bundle of Kent?
The Kent bundle, or an anomalous pathway of AV conduction, is now thought to result from the persis- tence of the atrial and ventricular muscle continuity that is present in the early embryonic stages of man.
Why is flecainide used in WPW?
Administered during preexcited atrial fibrillation, flecainide consistently slows the ventricular response and converts the majority of cases to sinus rhythm. Serious ventricular proarrhythmia is seen almost exclusively in patients with structural cardiac disease.
Which drugs are contraindicated in WPW syndrome?
Safe practice in SVT with WPW
|Arrhythmia||Drugs contraindicated||Drugs Recommended|
|Antidromic AVRT||Adenosine Verapamil Diltiazem β-blockers Digoxin||Procainamide Flecainide Propafenone Amiodarone|
|AF||Adenosine Verapamil Diltiazem ß-blockers Digoxin||Procainamide Ibutilide Dofelitide Flecainide Amiodarone|