Sa node rate Study guides, Class notes & Summaries

AMCA EKG - Practice Exam New Questions 2024 with 100% Correct Answers | Verified | Latest Update | 100% Pass | Already Graded A+ what is the most accurate method for acquiring heart rate? 1500 method As an impulse moves toward a positive electrode it produces what type of deflection? upward on ECG papers horizontal measurements are used to determine what? heart rate the initiation of the impulse in the SA Node and its movement through the atria produce? P-wave repolarization of the ventric...

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...

What period follows depolarization of the myocardium and represents a period during which no new cardiac potential can be propagated? Correct! Refractory Threshold Sinoatrial (SA) Hyperpolarization During the refractory period, no new cardiac action potential can be initiated by a stimulus. This selection is the only option that accurately identifies the period described in the question. Question 2 2 / 2 pts What is the suggested mean blood pressure for an 8- to 9-year-old ch...

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...

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...

PCT NHA Exam Questions and answers, 100% Verified. Graded A 1. The lavender-topped tube contains: a. No additive b. SPS c. Na+ citrate d. EDTA - -d. EDTA 1. The additive in a gray-topped tube is: a. K+ oxalate b. Na+ citrate c. EDTA d. None of the above - -a. K+ oxalate 1. Which of the needle has the largest gauge? a. 16 g b. 20 g c. 21 g d. 25 g - -a. 16 g 1. Which of the following gauge needle is used for the typical adult venipuncture? a. 23 g b. 16 g c. 21 g d....

QUESTIONS AND ANSWERS

Study OMSA 2024 Updated final certification exam Pathway of Blood Flow from Lungs Carrying Oxygen - CORRECT ANSWER-Through the Pulmonic vein to the Left Atrium, through Mitral Valve, to the Left Ventrical , through the Aortic Valve to the Aorta. (P,LA,MV, LV,AV,A) Pathway of Blood flow Through the Heart - CORRECT ANSWER-Superior and Inferior Vena Cava to Right Atrium, through Tricuspid Valve into Right Ventrical, past the Pulmonic Valve to the Pulmonary Artery How many Chambers does...

1. A client with asthma receives a prescription for high blood pressure during a clinic visit. Which prescription should the nurse anticipate the client to receive that is least likely to exacerbate asthma? A. Carteolol (Ocupress). B. Propranolol hydrochloride (Inderal). C. Pindolol (Visken). Incorrect D. Metoprolol tartrate (Lopressor). Correct The best antihypertensive agent for clients with asthma is metoprolol (Lopressor) (C), a beta2 blocking agent which is also cardiosel...

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...