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