Review for CET Practice Test Latest Update Graded A+
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Course
CET Practice
Institution
CET Practice
Review for CET Practice Test Latest
Update Graded A+
0.04 sec Small boxes on grid - horizontal
1mm Small boxes on grid- vertical
25mm/sec Normal paper speed
U waves Normal, large ________ indicate decreased potassium
Sinus rhythm -P wave upright and rounded and before every QRS
-...
Review for CET Practice Test Latest Update Graded A+ 0.04 sec ✔✔Small boxes on grid - horizontal 1mm ✔✔Small boxes on grid - vertical 25mm/sec ✔✔Normal paper speed U waves ✔✔Normal, la rge ________ indicate decreased potassium Sinus rhythm ✔✔-P wave upright and rounded and before every QRS -narrow QRS < 0.12 sec, -rate: 60 -100 -PR interval - 0.12 to 0.20 sec Somatic tremors ✔✔Can be caused by muscle movement/seizures Wandering basel ine ✔✔This almost always represents the patient's respiration, but can also be caused by movement, dirty leads/electrodes and loose electrodes. An easy way to eliminate this is to move limb leads to wrists and ankles. 60 cycle interference ✔✔Electric inte rference caused by cell phones/non -grounded appliances/frayed wire making the baseline of the ECG appear wavy, bumpy, or tremulous; Dry electrodes may also cause this problem because of poor contact lead III ✔✔What Lead is created between left arm and left leg? Einthoven's triangle ✔✔ Holter monitoring ✔✔Records EKG over 24 hours, using 5 leads; wear loose fitting clothes to reduce artifact, patient presses "event" button if they experience spontane ous symptoms, should carry on normal activities but record exercise, can't get wet, only technician can replace loose leads, tobacco products can be used up to 2 to 3 hours prior to the exam; erectile dysfunction drugs/caffeine products should be avoided f or 24 hr. before the test
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