Wave of depolarization Study guides, Class notes & Summaries

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...

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...

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!! 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? ...

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...

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 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...

Excitability correct answers the ability of non-pacemaker heart cells to respond to an electrical impulse that begins in pacemaker cells. Depolarization correct answers occurs when the normally negatively charged cells within the heart muscle develop a positive charge. Conductivity correct answers 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:...

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...

ATI CARDIAC 2023/ 2024 Updated Questions and Verified Answers| 100% Correct| Grade A Q: You are providing teaching to a group of PTs which of the Pts is at risk for developing PAD? 1. PT with hypothroidism 2. PT with Diabetes Mellitus 3. PT whose daily diet consists of 25% fat 4. Pt who consumes 2 bottles of beer a day Answer: 2. PT with Diabetes Mellitus-at risk for microvascular and progressive peripheral arterial disease Q: You are planning a presentation about HTN which...