Wide q waves in leads ii - Study guides, Class notes & Summaries

FoEM CBR22- Cardiology Exam What underlying pathologic process distinguishes myocardial infarction from angina/unstable angina? Atherosclerotic plaque rupture → exposed endothelium → clot attaches → reduced blood flow; if cell death occurs (usually due to complete vascular obstruction) then positive trop and MI; if no cell death occurs then negative trop and angina/unstable angina. What is the difference between transmural and nontransmural infarction? Transmural: usually STEMI, la...

Normal PR segment length 0.12 - 0.2 sec 3 - 5 small boxes Normal QRS interval 0.06 - 0.1 sec 1 - 3 small boxes Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:02 / 0:15 Full screen Normal QT interval 40% of cardiac cycle Normal P amplitude & duration < 0.12 sec (3 small boxes) < 0.25 mV (2.5 small boxes) Positive P waves in? left lateral (I, aVL, V5, V6) & inferior (II, III, aVF); usually most posi...

Right ventricular infarction (RVI) lead changes - II, III, AVF R ventricular infarction s/s - clear breath sounds, hypotension, JVD. R ventricular dilation and dec contractility>> dec preload and CO Reperfusion therapy standard - Within 60 min of ED arrival Common causes of PEA - Hypoxia, tension pneumo, cardiac tamponade BNP as a marker - of L ventricular dysfunction bc ventricles make BNP and an inc of over 100 pg/ml indicates symptomatic HF Transcutaneous pacing (TCP) - A beat af...

What are the 6 parts of the cardiac conduction cycle? correct answer: -SA node -Internodal pathways -AV node -Bundle of His -R and L bundle branches -Purkinje fibers What is the SA node? correct answer: -Small cluster of cells located in the upper R atrium *-Pacemaker of the heart* What are internodal pathways? correct answer: Impulses sent by the SA node that travel through the atrial muscle fibers via the intra-atrial pathways Allows for simultaneous depolarization and contra...

A branch of the _______________ supplies the right atrium and right ventricle with blood. correct answer: right coronary artery (RCA) Stimulation of parasympathetic nerve fibers typically results in which of the following actions? correct answer: Slowed conduction through the atrioventricular (AV) node The contribution of blood that is added to the ventricles and results from atrial contraction is called correct answer: atrial kick. Which of the following are semilunar valves? correc...

CEN SAMPLE TEST QUESTIONS & ANSWERS, GRADED A+. VERIFIED/ Right ventricular infarction (RVI) lead changes - -II, III, AVF R ventricular infarction s/s - -clear breath sounds, hypotension, JVD. R ventricular dilation and dec contractility>> dec preload and CO Reperfusion therapy standard - -Within 60 min of ED arrival Common causes of PEA - -Hypoxia, tension pneumo, cardiac tamponade BNP as a marker - -of L ventricular dysfunction bc ventricles make BNP and an inc of over 100 pg/ml ...

CEN SAMPLE TEST EXAM REVIEW QUESTIONS & ANSWERS, GRADED A+/ VERIFIED/ Right ventricular infarction (RVI) lead changes - -II, III, AVF R ventricular infarction s/s - -clear breath sounds, hypotension, JVD. R ventricular dilation and dec contractility>> dec preload and CO Reperfusion therapy standard - -Within 60 min of ED arrival Common causes of PEA - -Hypoxia, tension pneumo, cardiac tamponade BNP as a marker - -of L ventricular dysfunction bc ventricles make BNP and an inc of over...

Right ventricular infarction (RVI) lead changes II, III, AVF R ventricular infarction s/s clear breath sounds, hypotension, JVD. R ventricular dilation and dec contractility>> dec preload and CO Reperfusion therapy standard Within 60 min of ED arrival Common causes of PEA Hypoxia, tension pneumo, cardiac tamponade BNP as a marker of L ventricular dysfunction bc ventricles make BNP and an inc of over 100 pg/ml indicates symptomatic HF Transcutaneous pacing (TCP) A beat after...

PCCN study cards Exam 53 Questions with Verified Answers PSVT- Paroxysmal supraventricular tachycardia- simultaneous activation of A & V - retrograde P waves almost lost in QRS - CORRECT ANSWER PSVT mimicking a more serious rhythm called V tach - CORRECT ANSWER Retrograde P waves can be seen in this PSVT - CORRECT ANSWER Good example of the pseudo-R' configuration in lead V1, representing the retrograde P waves of PSVT. - CORRECT ANSWER Episode of PSVT that is broken up wit...

APEX EKG Test - Questions and Answers (Complete Solutions) Phase 0 of the cardiac action potential correlates to what event, EKG piece, and ion movement? Depolarization QRS Na+ influx Phase 1 of the cardiac action potential correlates to what event, EKG piece, and ion movement? Initial repolarization QRS Cl- influx K+ efflux Phase 2 of the cardiac action potential correlates to what event, EKG piece, and ion movement? Plateau ST segment Ca+2 influx K+ efflux Phase 3 of the cardiac action poten...