Exam 5: Errors of Conduction: Tachycardia

The ____ is a slurring of the upstroke of the R wave that broadens the QRS slightly.

When polymorphic ventricular tachycardia is preceded by a rhythm with a prolonged QT interval, either congenital or medication induced, it is called ____.

____ syndrome is a genetic abnormality that causes the heart rhythm to degenerate into torsades de pointes (TdP).

____ is defined as changing the heart's rhythm.

____ can be distinguished by a number of minor changes in the precordial leads that distinguish WPW into types A, B, and C.

Since the pacemaker in ventricular tachycardia is in the ventricles, the deflection of the R waves is all in the same direction, or in ____________________ across the precordial leads.

The difference between ventricular flutter, which can be tolerated for a limited time, and ventricular tachycardia, which cannot be tolerated, is the rate.

All tachycardias that originate above the ventricles are called ____.

____ is a relatively rare tachydysrhythmia that results from a re-entry circuit around the SA node.

Electrophysiologic mapping has identified three mechanisms: AV nodal re-entry tachycardia (AVNRT), AV re-entry tachycardia (AVRT), and REAL paroxysmal atrial tachycardia (PAT).

Electrocardiograms are grouped in order of similar characteristics.

Cardioversion works best when the tachydysrhythmia is the result of an error of conduction.

Typically, ____ is a regular rhythm stimulated by a re-entry circuit within the ventricles.

The abnormal awareness of one's heart beating in one's chest is called a(n) ____________________.

When one branch of the AV node conducts the impulse forward and the other branch of the AV node conducts it backward, this is called ____ tachycardia.

Polymorphic ventricular tachycardia is associated with a short QT interval.

Beta/adrenergic blocking agents have an antidysrhythmic effect that is cardioprotective to patients with acute coronary syndrome.

The pathologic mechanism for a too fast heart rate is thought to be due to a ____.

____ is an error of conduction.

Strictly speaking, ____________________ is the procedure used to convert an organized rhythm into a sinus rhythm.