ECHELON EXAM|QUESTIONS AND VERIFIED ANSWERS|NEW UPDATE
2026/2027|GRADED A+
When the sympathetic nerve fibers are stimulated, the heart rate is ____________.
CORRECT|ANSWER
elevated
Electrode location sites should be rotated _______________ or when the pt is sweaty or has had a bath.
CORRECT|ANSWER
q24h
What method is used to calculate atrial and ventricular rate for irregular rhythms?
CORRECT|ANSWER
6 second rule
T or F: The qrs complex in MCL1 can be negative and still be normal.
CORRECT|ANSWER
T
A wave form is a movement ______________ the isoelectric line in either a positive or negative
direction.
CORRECT|ANSWER
away from
, Lead II is helpful in detecting....
CORRECT|ANSWER
sinus node and atrial arrhythmias
What affects preload: volume in the veins, pressure in the arteries or ventricles, or volume of blood in
the ventricles?
CORRECT|ANSWER
volume in the veins
Along with Lead II, lead III is most helpful in monitoring changes in what part of the heart?
CORRECT|ANSWER
Inferior wall MI
What are the best areas to place electrodes?
CORRECT|ANSWER
on soft tissue
The ekg produces an upright pattern on the paper in response to electrical activity in the heart flowing
towards a
CORRECT|ANSWER
positive electrode
The QT interval represents
CORRECT|ANSWER
total ventricular activity
2026/2027|GRADED A+
When the sympathetic nerve fibers are stimulated, the heart rate is ____________.
CORRECT|ANSWER
elevated
Electrode location sites should be rotated _______________ or when the pt is sweaty or has had a bath.
CORRECT|ANSWER
q24h
What method is used to calculate atrial and ventricular rate for irregular rhythms?
CORRECT|ANSWER
6 second rule
T or F: The qrs complex in MCL1 can be negative and still be normal.
CORRECT|ANSWER
T
A wave form is a movement ______________ the isoelectric line in either a positive or negative
direction.
CORRECT|ANSWER
away from
, Lead II is helpful in detecting....
CORRECT|ANSWER
sinus node and atrial arrhythmias
What affects preload: volume in the veins, pressure in the arteries or ventricles, or volume of blood in
the ventricles?
CORRECT|ANSWER
volume in the veins
Along with Lead II, lead III is most helpful in monitoring changes in what part of the heart?
CORRECT|ANSWER
Inferior wall MI
What are the best areas to place electrodes?
CORRECT|ANSWER
on soft tissue
The ekg produces an upright pattern on the paper in response to electrical activity in the heart flowing
towards a
CORRECT|ANSWER
positive electrode
The QT interval represents
CORRECT|ANSWER
total ventricular activity
