Atrial repolarization - Study guides, Class notes & Summaries

NCLEX RN QUESTIONStreatment for PVC and v tach lidocaine treatment for atrial dysrhythmias A: adenosine B: beta blockers C: calcium channel blockers D: digitalis (digoxin) DO NOT GIVE BETA BLOCKERS TO WHAT PATIENTS ASTHMA TREATMENT FOR V FIB D FIB ASYSTOLE TREATMENT epinephrine and atropine Reason for chest tubes reestablish pressure in pleural space what type of space is in the pleural cavity negative calcium channel blockers are like __________ fo...

P wave - ANSWER Depolarization of the atria PR interval - ANSWER -Normal is 0.12 to 0.2 seconds - onset of atrial depolarization until onset of ventricular polarization QRS complex - ANSWER -Normal is 0.06 to 0.11 seconds -Ventricular depolarization -systole T wave - ANSWER -appears after QRS complex - Ventricular repolarization -Spiked T-wave occurs with hyperkalemia U wave - ANSWER - repolarization of the purkinje fibers - seen in patients with hypokalemia SA node - ANSWER...

CSEP CEP Study Guide Exam Questions & Answers 2024/2025 Autorythmic - ANSWERSSelf Exciteable, and repeatedly generate action potential eg. natural pace maker Cause of fundamental heart rhythm - ANSWERSNOT by nerve impulses or hormones, rather electrical impluse SA Node - ANSWERSMain natural pacemaker, faster conduction than autorhytmic fibres The Heart's electrical flow - ANSWERSSA Node to AV Node - AV Node to AV Bundle - Bundle of HIS to L and R branches to Apex and Purkinje FIbr...

On an electrocardiogram (EKG), the P wave represents which of the following? A) Atrial depolarization B) Ventricular depolarization C) Atrial repolarization D) Ventricular repolarization - ANSWER-A) Atrial depolarization Select all that apply. Which lab values are incorrect? A. Na+ 135-145 B. K+ 2.3-2.9 C. Mg 1.8-2.4 D. Calcium 2-3 - ANSWER-B. K+ 2.3-2.9 D. Calcium 2-3 What electrolyte, if too high or low, can cause cardiac arrhythmias? A. Mg B. Na+ C. K+ D. Ca - ANSWER-C. K+ A p...

-treats atrial and ventricular tachydysrhyhmias -adverse effects: dysrhythmias, blood disorders, lupus like syndrome, vomiting, diarrhea, prolonged QT interval, - Procainamide (Pronestyl) -Class Ib -block sodium channels -accelerate repolarization -increase or decrease APD -used for atrial and ventricular tachydysrhythmias caused by digitalis toxicity or prolonged QT interval - Phenytoin -used to treat ventricular tachydysrhythmias -raises ventricular fibrillation threshold -can cause...

Relative refractory periods - ️️occurs towards the end of the T-wave when most ventricular cells are repolarized and vulnerable to new stimuli; can lead to VT if PVC lands during this time Refractory = resistant Supraventricular Tachycardia (SVT) - ️️§ regular but fast rhythm § rate 150-250 § P wave merged with T wave § PRI variable & difficult to measure § QRSà typically narrow § Common causes: stimulants, electrolyte imbalance, hypoxia Sinoatrial Node (SA node) Rate? ...

NURS 420 Exam #1 Questions and Answers | 100% Verified and Updated a wide QRS is defined as - Answer-greater than .12 sec Conduction system of the heart - Answer-SA node, AV node, bundle of His, r and l bundle branches, and Purkinje fibers What is the P wave of an ECG? - Answer-atrial depolarization What is the QRS complex of an ECG? - Answer-ventricular depolarization and atrial repolarization What is the T wave of an ECG? - Answer-ventricular repolarization PR interval - Answer-delay ...

Critical Care Exam 1 Questions and Answers 100% Pass P wave - Correct Answer ️️ -Depolarization of the atria PR interval - Correct Answer ️️ --Normal is 0.12 to 0.2 seconds - onset of atrial depolarization until onset of ventricular polarization QRS complex - Correct Answer ️️ --Normal is 0.06 to 0.11 seconds -Ventricular depolarization -systole T wave - Correct Answer ️️ --appears after QRS complex - Ventricular repolarization -Spiked T-wave occurs with hyperkalemia U...

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 ___...

NU 606 Exam 3 Questions with Verified Answers- Regis. What are the two layers of the pericardial sac ️ outer fibrous pericardium anchors the heart to diaphragm visceral pericardium (epicardium) has a serous membrane what is unique about cardiac muscle (myocardial fibers) ️ - no nerves are present intercalated discs at the junctions between fibers (they contain desmosomes, connections to prevent muscle cells from separating during contraction, and gap junctions, which permit ions to ...