Duration of qt interval - Study guides, Class notes & Summaries
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UCLA EKG Test Questions And Answers All Verified
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UCLA EKG Test Questions And Answers, All Verified 
 
AV node rate 
40-60 bpm 
 
 
SA node rate 
60-100 bpm 
 
 
Purkinje fibers rate 
20-40 bpm 
 
 
PR interval is from _ to _? 
beginning of P wave to beginning of Q wave 
 
 
QRS interval is from _ to _? 
beginning of Q to end of S 
 
 
QT interval is from _ to _? 
beginning of Q to end of T 
 
 
PR interval normal duration 
0.12-0.20 s 
 
 
QRS normal duration 
0.04-0.12 s 
 
 
QT interval normal duration 
0.36-0.44 
 
 
Normal Sinus Rhythm (N...
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ADVANCED ARRHYTHMIA EXAM PREP WITH 100% CORRECT ANSWERS ALREADY GRADED A+.
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Conduction System 
SA Node 
AV Node 
Bundle of His 
Right and Left bundle branches 
Purkinje Fibers 
 
 
 
SA Node 
primary pacemaker 
rate 60-100 
 
 
 
 
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AV Node 
slightly delays impulse from atria to ventricles 
 
 
 
Bundle of His 
conducts impulses to left and right bundle branches 
 
 
 
Purkinje Fibers 
relay impulses to ventricular myocardium 
 
 
 
Depolarization ...
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BKAT ICU POST TEST QUESTIONS WITH 100% CORRECT ANSWERS
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Nitroprusside purpose CORRECT ANSWER decreases preload and afterload by vasodilation (mainly afterload) 
 
Dobutamine mechanism of action CORRECT ANSWER contractility 
 
Dopamine at a low-end dose "renal dose" CORRECT ANSWER 0.5-4mcg/kg/min 
increases renal and mesentric perfusion 
 
Dopamine at a mid-range dose CORRECT ANSWER 4-10mcg/kg/min 
increases contractility and heart rate 
 
Dopamine at a high-range dose CORRECT ANSWER greater than 10mcg/kg/min 
vasoconstriction and increases BP 
 
...
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BKAT ICU Post Test Questions And Answers
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Nitroprusside purpose - Answer- decreases preload and afterload by vasodilation (mainly afterload) 
 
Dobutamine mechanism of action - Answer- contractility 
 
Dopamine at a low-end dose "renal dose" - Answer- 0.5-4mcg/kg/min 
increases renal and mesentric perfusion 
 
Dopamine at a mid-range dose - Answer- 4-10mcg/kg/min 
increases contractility and heart rate 
 
Dopamine at a high-range dose - Answer- greater than 10mcg/kg/min 
vasoconstriction and increases BP 
 
Dopamine and Levophed inf...
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NHA NOW EKG Technician Practice Test 2023 (solved)
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Which of the following EKG machine functions should an EKG technician use to control and regulate the height of EKG waveforms on the tracing? 
a. Speed 
b. Output display 
c. Artifact filter 
d. Gain - Answer- d. Gain 
 
Which of the following methods should a EKG technician use when removing hair from electrode placement sites for telemetry monitoring? 
a. Dry shave 
b. Wet shave 
c. Tape 
d. Clippers - Answer- d. Clippers 
 
An EKG technician notes periods of sinus arrest on a patient's EKG t...
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Exam 1: NSG223/ NSG 223 (New 2024/ 2025 Update) Med Surg 2 Exam| Questions and Verified Answers| 100% Correct| Graded A- Herzing
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Exam 1: NSG223/ NSG 223 (New 2024/ 2025 
Update) Med Surg 2 Exam| Questions and 
Verified Answers| 100% Correct| Graded A- Herzing 
 
 
QUESTION 
 
What is the PR Interval 
The PR interval is measured from the beginning of the P wave to the beginning of the QRS 
complex. It represents the time needed for sinus node stimulation, atrial depolarization, and 
conduction through the AV node before ventricular depolarization 
 
 
 
QUESTION 
 What is the ST Segment 
 
 
Answer: 
The ST segment, w...
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BKAT ICU Post Test Exam 2023 With 100% Correct Answers.
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BKAT ICU Post Test Exam 2023 With 100% Correct Answers. 
Nitroprusside purpose - correct answer decreases preload and afterload by vasodilation 
(mainly afterload) 
Dobutamine mechanism of action - correct answer contractility 
Dopamine at a low-end dose "renal dose" - correct answer 0.5-4mcg/kg/min 
increases renal and mesentric perfusion 
Dopamine at a mid-range dose - correct answer 4-10mcg/kg/min 
increases contractility and heart rate 
Dopamine at a high-range dose - correct answer greate...
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CPHON Exam 93 Questions with Verified Answers,100% CORRECT
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CPHON Exam 93 Questions with Verified Answers 
 
G1 - CORRECT ANSWER The first gap, or growth phase, of the cell cycle, consisting of the portion of interphase before DNA synthesis begins. Cell grows larger and produces ribosome and proteins. 
 
S - CORRECT ANSWER All 46 chromosomes are replicated in the cells nucleus 
 
G2 - CORRECT ANSWER The second gap, or growth phase, of the cell cycle, consisting of the portion of interphase after DNA synthesis occurs. DNA is condensed into rod form . 
 
(...
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PCCN practice exam notes (2024/2025) Already Passed
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PCCN practice exam notes (2024/2025) 
 
Already Passed 
 
Pt on Vtach, HR 135, RR 32, BP 90/48, conscious but c/o dizziness, recent K+ lvl is 3.4. What 
action would you do first? 
a. emergent defib 
b. amio 300mg IVP 
c. emergent cardioversion 
d. hang 10 mEq KCL/50mL D5W C 
 
The nurse notes the following when analyzing a patient's telemetry strip: HR, 65/min and 
regular; PR interval, 0.22 seconds; QRS complex, 0.10 seconds; QTc, 0.52 seconds. Which of 
the following dysrhythmias is the pati...
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PCCN practice exam questions with correct answers
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Pt on Vtach, HR 135, RR 32, BP 90/48, conscious but c/o dizziness, recent K+ lvl is 3.4. What action would you do first? 
a. emergent defib 
b. amio 300mg IVP 
c. emergent cardioversion 
d. hang 10 mEq KCL/50mL D5W CORRECT ANSWER C 
 
The nurse notes the following when analyzing a patient's telemetry strip: HR, 65/min and regular; PR interval, 0.22 seconds; QRS complex, 0.10 seconds; QTc, 0.52 seconds. Which of the following dysrhythmias is the patient at risk for? 
 
A. Atrial fibrillation bec...
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