Adenosine is an example of a class ___ antiarrhythmic - Class V/ Non
Classed
During phase 2 of the action potential, what ion is responsible for heart
muscle contraction? - CA2+
If lead insulation is fractured, lead impedance will - Decrease
If VT originates in the LV, there will be a _____________________ morphology?
- Right Bundle Branch Block (positive in lead V1)
Of the blocks listed below, which would be an indication for for a
pacemaker? (Select all that apply)
A: 1st degree heartblock
B: 2nd degree, type 1 heartblock
C: 2nd degree, type 2 heartblock
D: 3rd degree heartblock
E: Left bundle branch block more than 120ms - C, D, E
On which catheter would you first see PVCs - RV catheter
Referring to equation V=IR, which relates voltage to current flow and
resistance, reducing the voltage by half will do what to the resistance? -
it will decrease by half
, The irregular bands of tissue projecting from the inner surfaces of the
ventricles are called - Trabeculae carnea
The resting membrane potential of the ventricular action potential is: -
-90 to -100 mV
The second letter in the NBG Device code refers to: - chamber sensed
The two primary cardiac responses associated with a
Sympatheticneural discharge are ________heart rate and _________ AV
conduction - increased, increased
True of False: The AV node is located at the apex of the triangle of Koch?
- True
True or False:
A SNRT is used to evaluate the health of the AV node - False
True or False: administering adenosine will terminate Atrial Tachycardia
- False
True or False: An HV interval of 120ms would be an indication for a
pacemaker? - True