Telemetry Exam 68 Questions with Verified Answers,100% CORRECT
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Course
Nursing Telemetry
Institution
Nursing Telemetry
Telemetry Exam 68 Questions with Verified Answers
Cardiac conduction - CORRECT ANSWER
ECG components - CORRECT ANSWER
Heart auscultation - CORRECT ANSWER All people enjoy time magazine
Aortic, pulmonic, Erb's point, tricuspid, mitral
P wave - CORRECT ANSWER P wave= time for passage o...
Telemetry Exam 68 Questions with Verified Answers
Cardiac conduction - CORRECT ANSWER ECG components - CORRECT ANSWER Heart auscultation - CORRECT ANSWER All people enjoy time magazine
Aortic, pulmonic, Erb's point, tricuspid, mitral
P wave - CORRECT ANSWER P wave= time for passage of the electrical impulse through the atrium causing atrial depolarization (contraction)
Normal: 0.06-0.12 sec (remember, p for preteen: 6-12)
What is a source of possible variation in P wave? - CORRECT ANSWER disturbance in conduction w/in atria
PR interval (PRI) - CORRECT ANSWER -Measured from beginning of P wave to beginning of QRS complex
-Represents time for impulse to spread thru atria, AV node, bundle of His, bundle branches, and Purkinje fibers (to point immediately preceding ventricular contraction)
Normal: 0.12-0.20 sec
What is a source of possible variation in PRI? - CORRECT ANSWER Disturbance in conduction- usually in AV node, bundle of His, or bundle branches but could also be in atria
Normal duration of Q wave - CORRECT ANSWER < 0.03 sec
What is a source of possible variation in QRS complex? - CORRECT ANSWER MI may result in pathologic wide (>=0.03 sec) and deep Q wave QRS interval - CORRECT ANSWER -Measured from beginning to end of QRS complex
-Represents time for depolarization (contraction) of both ventricles (systole)
Normal: < 0.12 sec
What is a source of possible variation in QRS interval? - CORRECT ANSWER Disturbance in conduction in bundle branches or ventricles
ST segment - CORRECT ANSWER -Measured from S wave to beginning of T wave
-Represents time btwn ventricular depolarization and repolarization (diastole)
-Should be isoelectric (flat)
Normal: 0.12 sec
What is a source of possible variation in ST segment? - CORRECT ANSWER Disturbances (elevation or depression) usually d/t ischemia, injury or infarction
T wave - CORRECT ANSWER -Represents time for ventricular repolarization
-Should be upright
Normal: 0.16 sec
What is a source of possible variation in T wave? - CORRECT ANSWER Disturbances (tall, peaked; inverted) usually d/t electrolyte imbalances, ischemia, or infarction
QT interval - CORRECT ANSWER -Measured from beginning of QRS complex to end of T wave
-Represents time for entire electrical depolarization and repolarization of the ventricles
Normal: 0.34-0.43 sec
Common cardiac causes of dysrhythmias - CORRECT ANSWER -Accessory pathways
-Cardiomyopathy
-Conduction defects
-HF
-Myocardial ischemia/infarction
-Valve disease
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