Normal pri interval - Study guides, Class notes & Summaries

EKG STUDY MATERIAL FOR ADVENTHEALTH Exam Questions With Verified Answers 3 pacemakers of the heart - answer1. SA node 2. AV node 3. bundle branch intrinsic rate of SA node - answer60-100 bpm intrinsic rate of AV node - answer40-60 bpm intrinsic rate of bundle branches - answer20-40 bpm electrical pathway through the heart - answer1. normal conduction impulse originates in the *SA Node* 2. impulse travels to *AV Node* causing atrial depolarization (contraction) 3. AV Node slightly del...

Bulbus cordis correct answer: Smooth parts (outflow tract) of left and right ventricles endocardial cushions correct answer: Atrial septum, membranous interventricular septum; AV and semilunar valves neural crest left horn of the sinus venosus correct answer: coronary sinus posterior, sub cardinal, and supra cardinal veins correct answer: IVC Right common cardinal vein and right anterior cardinal vein correct answer: SVC Right horn of sinus venosus correct answer: Smooth ...

Know how to measure the PR interval ( PRI)Know how to measure the QRSKnow the normal values for the PRI and the QRS Know what electrical activity triggers which mechanical event. For example what electrical event represents atrial contraction? Know the blood circulation through the heart, starting from the superior vena cava and progressing through the right side of the heart, the lungs and the left side, ending up finally going through the aortic valve and into the aorta. Know the electrical co...

Normal PRI interval - correct answer0.12-0.20 Normal QRS interval - correct answer0.11 or less What does the P wave represent? - correct answerAtrial depolarization What does the QRS complex represent? - correct answerAtrial repolarization and ventricular depolarization Q wave indicates what? - correct answerDead myocardial tissue. Always a negative deflection What is the natural pacemaker of the heart? - correct answerSA node 3 types of pacemakers - correct answer1) single (ei...

SA Node - ANS 60-100 bpm; first line pacemaker The SA node firing is represented by the P wave and shows atrial depolarization AV Node - ANS 40-60 bpm Ventricular Rate - ANS Purkinje Fibers 20-40bpm PRI - ANS PR interval Travel time of the impulse from the SA node through the AV node and to the ventricles Normal PRI range - ANS 0.12-0.20s QRS - ANS represents ventricular depolarization Less than or equal to 0.12s QT - ANS Length of time it take...

First Degree Atrioventricular Heart Block - ANS prolonged PR interval-measures the time required for an impulse to travel from the SA to the AV node. PRI longer than 0.20 Second degree AV block Type I - ANS progressive prolongation of PRI, gradual shortening of R to R intervals P wave not followed by a QRS wave a pause with an R to R interval less than the sum of two P to P intervals first conducted atrial impulse after the pause shows a shorter or normal PRI S...

First Degree Atrioventricular Heart Block prolonged PR interval-measures the time required for an impulse to travel from the SA to the AV node. PRI longer than 0.20 Second degree AV block Type I progressive prolongation of PRI, gradual shortening of R to R intervals P wave not followed by a QRS wave a pause with an R to R interval less than the sum of two P to P intervals first conducted atrial impulse after the pause shows a shorter or normal PRI Previous Play Next ...

Normal Conduction System -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 escape pacemaker sites rate of 14-40 Tele Strip Paper -ANSWER ...

ECG Exam 2 Questions With 100% Correct Answers Where does a junctional rhythm originate - answerAV Node Why do we call it AV Junction and not AV Node? - answerAV junction is the space between the atrial and ventricle, while the AV node is the back up pacemaker Where will the P waves be located with a junctional rhythm? - answerImmediately before, after, or hidden within QRS What is the rate of a junctional rhythm - answer40 to 60 bpm What is an accelerated junctional rhythm? - answerRate...

Normal Conduction System -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 escape pacemaker sites rate of 14-40 Tele Strip Paper -ANSWER -S...