Exam (elaborations)
Exam 1 Part 2_ Cardiac Dysrhythmias (1).
Exam 1 Part 2_ Cardiac Dysrhythmias (1).
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Exam 1 Part 2: Cardiac DysrhythmiasRefers to the passage of oxygenated capillary blood through body tissues. - ANS-What does
perfusion refer to?
SA Node -> AV Node -> Bundle of His -> Perkin Fibers -> Contraction of ventricles. - ANS-What
is the processes of the normal electric conduction system?
Contraction - ANS-What does depolarization mean?
Relaxation - ANS-What does Repolarization mean?
Throughout the Atria downward and then ventricles upward. - ANS-When SA Node fires what
part of the heart gets activity first and then second?
60-100 - ANS-Whats the normal range for SA Node electrical impulse?
40-60 - ANS-What is the normal range for AV Node electrical impulse?
SA Node - ANS-What is the main pacemaker in the heart?
AV Node - ANS-What is the delay of transmission that helps ensure that all blood into
ventricles?
15-40 - ANS-Whats the normal range for Purkinje Fibers electrical impulse?
AV Node - ANS-What kicks in if the SA Node doesn't fire?
P -> QRS -> T - ANS-What is the order of the Normal ECG waveform?
SA Node and Atrial Contraction/depolarization - ANS-What does the P wave represent?
Bundle of His, Perkin Fibers, and Ventricular Depolarization. - ANS-What does the QRS wave
represent?
Ventricular repolarization - ANS-What does the T wave represent?
Around the AV Node Depolarization. - ANS-When does the Atrial repolarization occur?
Movement of NA, K, and Calcium. - ANS-What is Action Potential?
EKG - ANS-What do you use to measure Action Potential?
, 0.12-0.20 - ANS-What is the normal measure for the P-R Interval?
Less than 0.12 - ANS-What is the normal measure for the QRS Interval?
0.32-0.44 - ANS-What is the normal measure for the Q-T Wave?
Q-T Interval. - ANS-Which interval is the most vulnerable?
Millimeter squares box that equals 0.4 seconds. - ANS-How do you measure the ECG Paper?
1. Get HR
2. Observe the R-R Interval: QRS "R"
3. Examine the P Wave
4. Measure the Pr Interval: Count # of boxes
5. Determine if each P Wave is followed by a QRS complex
6. Examine and measure the QRS Complex
7. Examine and measure the QT Interval
8. Diagnose and Interpret the rhythm - ANS-What are the eight step process to interpret the
ECG?
6 Seconds - ANS-How long is the ECG paper strip?
60-100 - ANS-What is a normal HR?
HR less than 60 - ANS-What is Sinus Bradycardia?
HR is greater than 100 - ANS-What is Sinus Tachycardia?
ST segment depression or T wave inversion. - ANS-What would be an indicative of Myocardial
Ischemia?
3.5-5.5 - ANS-Normal Patients Potassium Levels?
4.0-4.5 - ANS-What is a Heart Patient Normal Potassium Level?
Magnesium, Oxygen, and Potassium. - ANS-If you see a Premature Ventricular Contraction,
what do you want to check?
Hypokalemia, Bradydysrythemias, and conduction blocks. - ANS-When you have U Wave
present what does that mean?
Ventricular Tachycardia. - ANS-PVC's can also occur and lead to?
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