Echelon quiz questions: EKG and Cardiac Rhythms
Comprehensive Questions and Correct Answers
(100% Accuracy, 2024)
1.When the sympathetic nerve fibers are stimulated, the heart rate is .: elevated
2.Electrode location sites should be rotated or when the pt is sweaty or has had a bath.: q24h
3.What method is used to calculate atrial and ventricular rate for irregular rhythms?: 6 second rule
4.T or F: The qrs complex in MCL1 can be negative and still be normal.: T
5.A wave form is a movement the isoelectric line in either a
positive or negative direction.: away from
6.Lead II is helpful in detecting....: sinus node and atrial arrhythmias
7.What affects preload: volume in the veins, pressure in the arteries or ven- tricles, or volume of blood in the ventricles?: volume in the veins .Along with Lead II, lead III is most helpful in monitoring changes in what part of the heart?: Inferior wall MI
9.What are the best areas to place electrodes?: on soft tissue
10.The ekg produces an upright pattern on the paper in response to electrical activity in the heart flowing towards a: positive electrode
11.The QT interval represents: total ventricular activity
12.What are the AV valves?: mitral and tricuspid
13.What part of the EKG reflects the refractory period?: The QRS to the peak of the T wave
14.5 large EKG strip boxes totals how much time?: 1 second
15.The PRI is considered abnormal or prolonged if it is: >0.20 secs
16.What is the most common cause for an alarm sounding?: a loose lead wire
17.Which lead is the most useful for routine monitoring and monitoring the sinus node?: Lead II
18.Which lead is helpful in monitoring atrial rhythms and hemiblocks?: Lead I
19.What is the normal measurement of a QRS complex?: 0.04-0.10
20.What are EKG artifacts?: false cardiac waveforms
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