Wave of depolarization Study guides, Class notes & Summaries
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![Advanced Patho NURS 5315 exam 1| Questions With Verified Answers 2024](/docpics/5032330/6620270845207_5032330_121_171.jpeg)
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Advanced Patho NURS 5315 exam 1| Questions With Verified Answers 2024
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Advanced Patho NURS 5315 exam 1| Questions With Verified Answers 2024 
 	 
Action potential Correct Answer: The process by which excitable cells transmit information from one to another. 
 
How is the action potential altered by a potassium imbalance? (Hyperkalemia) Correct Answer: The ECF has more K+ ions. The membrane potential becomes more positive (hypopolarized). 
Cells become MORE excitable. 
T waves peak. 
QRS complexes widen. 
Causes dysrhythmias, weakness, paresthesia. 
{If membrane p...
![Test Bank - Applied Pathophysiology for the Advanced Practice Nurse 1ST Edition Lucie By Dlugasch, Lachel Story | Complete 2023/2024](/docpics/3337740/64ef31dbd0fef_3337740_121_171.jpeg)
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Test Bank - Applied Pathophysiology for the Advanced Practice Nurse 1ST Edition Lucie By Dlugasch, Lachel Story | Complete 2023/2024
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Test Bank - Applied Pathophysiology for the Advanced Practice Nurse 1ST Edition Lucie By Dlugasch, Lachel Story | Complete 2023/2024. 
A 50-year-old man is having an acute myocardial infarction and will be administered recombinant 
tissue plasminogen activator (t-PA). The medication activates plasminogen in order to: 
A) decrease platelet adhesion. 
B) increase clotting time. 
C) promote fibrinolysis. 
D) promote coronary vasodilation. 
Ans: C 
Complexity: Easy 
Ahead: Hematopoietic System 
Subj...
![Hondros Bio 117 Final Exam Anatomy & Physiology PN](/docpics/3800688/654cbd232d3d2_3800688_121_171.jpeg)
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Hondros Bio 117 Final Exam Anatomy & Physiology PN
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allows blood to flow directly from the right atrium into the left atrium to bypass pulmonary circulation - foramen ovale 
 
carries blood from the umbilical vein to inferior vena cava; allows some blood to bypass the liver - ductus venosus 
 
atrial contraction; systole; p wave - atrial depolarization 
 
max volume of air that can be exhaled following maximal inhalation - vital capacity 
 
allows blood in pulmonary artery to flow directly into the descending aorta to bypass the pulmonary circula...
![Advanced - Dysrhythmias | Questions with 100% Correct Answers | Verified | Updated 2024](/docpics/4349377/65b53d64622c9_4349377_121_171.jpeg)
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Advanced - Dysrhythmias | Questions with 100% Correct Answers | Verified | Updated 2024
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Excitability - Answer- the ability of non-pacemaker heart cells to respond to an electrical impulse that begins in pacemaker cells. Depolarization - Answer- occurs when the normally negatively charged cells within the heart muscle develop a positive charge. Conductivity - Answer- the ability to send an electrical stimulus from cell membrane to cell membrane. As a result, excitable cells depolarize in rapid succession from cell to cell until all cells have depolarized. Ex: the wave of depolarizat...
![NHA CCMA Test | 2023/ 2024| Questions and 100% Verified Answers| LATEST!!](/docpics/3108224/64bafa0cb539b_3108224_121_171.jpeg)
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NHA CCMA Test | 2023/ 2024| Questions and 100% Verified Answers| LATEST!!
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NHA CCMA Test | 2023/ 2024| Questions and 
100% Verified Answers| LATEST!! 
 
1. What is the epicardium? 
 
 
 Answer: The outer most layer of the heart. 
 
 
 
 
 
2. The sudden rush of blood pushed into the ventricles as a result of atrial contraction is 
known as 
 Answer: Atrial kick 
 
 
 
3. The U wave represents 
 
 
 Answer: repolarization 
 
 
 
4. What is not necessary in administering an ECG? 
 
 
 Answer: Sterilizing the leads 
 
 
 
5. Which type of lead is lead III? 
 
 ...
![ASET CNIM Exam](/docpics/3094819/64b8513661d83_3094819_121_171.jpeg)
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ASET CNIM Exam
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Resting membrane potential is created by differences between the inside and outside of the cell in ion concentrations of 
 
1. K+ 
2. K+ and Ca++ 
3. K+, Na+ and Cl- 
4. Na+, Ca++ and Cl- - Answer- K+, Na+, and Cl- 
 
Excitation of the postsynaptic neuron is caused by the neurotransmitter 
 
1. gamma amino butyric acid 
2. glycine 
3. para amino butyric acid 
4. glutamate - Answer- Glutamate 
 
Wave III of the BAER is generated by the 
 
1. superior olivary complex 
2. inferior colliculus 
3. la...
![NR 329: Exam 1 Questions With COMPLETE sOLUTIONS](/docpics/2991123/649f3060e67d0_2991123_121_171.jpeg)
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NR 329: Exam 1 Questions With COMPLETE sOLUTIONS
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What lab level should be checked for a possible MI? correct answer: Troponin 
 
What indicates metabolic acidosis? correct answer: Low bicarb and low pH 
 
What signs would be expected for sustained blood loss? correct answer: Hypotension and a weak, thready pulse 
 
What does the P wave indicate on a rhythm strip? correct answer: Atrial depolarization before the QRS 
 
What is a possible reason for lower extremity edema and what lab is used to diagnose? correct answer: R sided heart failur...
![CARDIAC HEALTHSTREAM TELEMETRY EXAM Q & A 2023/2024](/docpics/3383304/64f85874904a1_3383304_121_171.jpeg)
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CARDIAC HEALTHSTREAM TELEMETRY EXAM Q & A 2023/2024
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CARDIAC HEALTHSTREAM TELEMETRY 
EXAM Q & A 2023/2024 
Normal Conduction System - CORRECT ANSWER--SA Node = Primary Pacemaker of 
the Heart, rate of 60-100 bpm 
-Internodal Pathways = Pathways connecting SA Node and AV Node 
-AV Node = Backup pacemaker, rate of 40-60 bpm 
-Bundle of His = splits nerve fibers down Left & Right Sides, His-Purkinje is conduction 
system of heart 
-L & R Bundle Brancehs = lead to left & right of the myocardium 
-Purkinje Fibers / Network = ends of the muscle, last...
![HEALTHSTREAM TELEMETRY & ECG EXAM 2023/2024](/docpics/3383605/64f861d70ad33_3383605_121_171.jpeg)
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HEALTHSTREAM TELEMETRY & ECG EXAM 2023/2024
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HEALTHSTREAM TELEMETRY & ECG 
EXAM 2023/2024 
Mechanical & Electrical Activity - CORRECT ANSWER-- Correlation between the 
electrical and mechanical functions of the heart 
- Electrical activity stimulates the heart to contract 
- Electrocardiogram (ECG) show both functions 
- Electrical pulse= action potntial 
Cardiac Monitoring - CORRECT ANSWER-- Used to diagnose dysrhythmias, chamber 
enlargement, MI/myocardial ischemia, monitor effects of electrolyte imbalances of 
medication administrat...
![Cardiology Nursing 1 Humber Final exam |302 questions and answers(including diagrams).](/docpics/3550957/651c3c7c9a831_3550957_121_171.jpeg)
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Cardiology Nursing 1 Humber Final exam |302 questions and answers(including diagrams).
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sinus rhythm 
regular rhythm 
Set by SA node at 60 to 100 bpm 
P waves normal 
normal qrs 
PR 0.12 - 0.2 
normal qrs less than 0.10 
 
 
wide qrs is 
greater than 0.12 
 
 
Sinus Tachycardia 
100-160 bpm 
SA node 
reduced time for ventricle filling 
assess for SOB or chest pain 
 
 
a prolonged QT interval 
more prone to arrhythmia 
 
 
NSR reflects the heart's 
normal electrical activity, providing synchrony between the atria and the ventricles. 
 
 
Sinus tachycardia occurs when the 
sinus no...
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