ARC Preliminary Review Set #3 EDIT

Regarding the junctional rhythms, the ____  usually is inverted and might follow, precede, be absent or coincide with the QRS complex.

Two similar electrically-appearing rhythms/phenomena which are sometimes confused for Ventricular Fibrillation include: Ventricular Tachycardia and _________.

If the rate of an Idioventricular Rhythm is more rapid then 40 bpm, it is referred to as an _________  Idioventricular Rhythm.

Sometimes the electrical axis will aid in the determination of Ventricular Tachycardia vs wide-complex SVT.  Although it is certainly not diagnostic, if the electrical axis is _____  you should lean in the direction of V. Tach.

It is well known that QT prolongation can lead to a life threatening rhythm of Torsades de Pointes.  It is also recognized that there are two distinct categories of prolonged QT- intervals: Congenital (Long QT Syndrome) and ______ .  Please know that in many cases of QT prolongation – no treatment is required, but if treatment is indicated, the treatment mode is different in each category.

The QT interval varies with rate and the question of QT prolongation must take into account the rate, especially if tachy or brady.  The computer interpretation and the rate adjusted QT is usually accurate (QTc) to assist you in your interpretation.  There are several formulas available to adjust the QT interval for rate.  A commonly used equation is the _______  Equation (pg 80 of the Field Guide).

The ICU nurse has asked you to interpret a rhythm strip.  Your analysis uncovers the following:  1…Narrow QRS complex, 2…Regular Rhythm, 3…Ventricular rate of 150 bpm.  Your differential diagnosis should include SVT with rate of 150 bpm and ______ . To be more certain of the interpretation, you should ask for the 12-Lead.

Regarding electronic pacemakers, the term _____  refers to the depolarization of the myocardium following the pacer spike i.e. a QRS complex will follow the pacer spike.

The broad category of “short PR’ is also referred to as the “Pre-excitation Syndrome”.  The WPW is a member of this category.  Another member you will occasionally encounter is the ________  which does not show QRS widening.  (pg 69 of Field Guide).

The hallmark of the _____  is that there is no relationship between the P-waves and the QRS complexes (they are beating independently). This is because no electrical pathway exists between the atria and the ventricles in ______.  The QRS complex duration will be narrow or widened depending on the location of the escape rhythm (high up in the HIS bundle {narrow QRS} or from the Purkinje fibers {wide QRS}).