Av node conduction - Study guides, Class notes & Summaries

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 depol...

CALAOMS FINAL EXAM QUESTIONS AND ANSWERS LATEST UPDATE 2023-2024. Name the two systems that comprise the autonomic nervous system: - Answer Parasympathetic and sympathetic The heart is divided into _____ chambers. The upper chambers are called _____ while the lower chambers are called _____. - Answer 4, atria, ventricles Continue the pathway of the blood flow: From the lungs where it picked up oxygen, blood travels through the _____ vein to the _____ atrium, past the _____ valve to the ___...

A nurse is monitoring a client who has just returned to the unit following surgery. The client received an initial dose of morphine 5 mg IV bolus for pain relief. Which of the following adverse effects should the nurse report immediately to the provider? Respiratory rate 11/min ​When using the airway, breathing, circulation approach to client care, the priority finding is a respiratory rate of 11/min indicating respiratory depression. A nurse is reinforcing teaching with a client who ...

Exam 1: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Test Review Study Guide | 100% Correct | Grade A - Chamberlain Question: cardiac pacemaker cells Answer: SA nodes Question: SA node Answer: Sodium, potassium and calcium Question: Slow influx of Na+ Answer: Results of this depolarization Question: Electrical conduction system Answer: SA node, AV node, Bundle of His, Purkinje fibers Question: P wave Answer:...

Artifact Name the ECG tracing. Right Bundle Branch Block Name the ECG tracing. NSR with QRS widening + Bundle branch block Name the ECG tracing. Third Degree Heart Block (Complete Heart Block) Name the ECG tracing. 2:1 AV Block (Type II AV Block- High Grade) Name the ECG tracing. Atrial Quadrigeminy Name the ECG tracing. Atrial Triplet with Aberrant Conduction Name the ECG tracing. Sinus Bradycardia with Artifact Name the ECG tracing. ...

Exam 2: BIO 202/ BIO202 (Latest 2024/ 2025 Update) Human Anatomy and Physiology II|| 100% Correct| Grade A (Verified Answers)- GCU Q: "partial obstruction of coronary blood flow can cause chest pain, pain caused by ischemia, often activity dependent"? Answer: Angina Pectoris Q: "Complete obstruction causes death of cardiac cells in affected area, pain or pressure in chest that often radiates down left arm"? Answer: Myocardial Infraction Q: "Vessels that ha...

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...

NREMT Advanced-EMT Exam 2023 Initial Assessment: B-SMNAC - ANS-- BSI (body substance isolation); - Scene Safety; - Mechanism of Injury (MOI)/Nature of Illness (NOI); - Number of Patients; - Assistance (additional units, Fire, Police, etc.); - C-spine (and/or C-collar) Initial Assessment: G-CAAT - ANS-- General Impression; - Chief Complaints, Life Threats (hemorrhage); - AVPU; - ABC's (airway, breathing, circulation); - Transport Decision (Load and Go or Stay and Play) Components of...

Which of the following is NOT a component of effective perfusion? A. Adequate blood volume B. Efficient heart pumping action C. Patent and responsive blood vessels D. High blood glucose levels D. High blood glucose levels (Adequate blood volume ensures that there is enough blood to be circulated throughout the body. Efficient heart pumping action is necessary for moving blood through the circulatory system. Patent and responsive blood vessels are needed to allow blood to flow freely to t...

Advent Health EKG Questions and Answers Rated A Afib The impulse originates in the Atria • The Atrial rate is > 300 and unable to measure [N/A] • No discernable P waves - PRI & Atrial rhythm cannot be measured [N/A] • The Ventricular rhythm is irregular • QRS within normal limits • If the Ventricular rate is <100 the rhythm is controlled A-fib; if the Ventricular rate is > 100 the rhythm is uncontrolled A-fib • This is a chronic rhythm for some patients Treatment: controlle...