MAYO ECG Exam Test Questions Answers Verified 100% Correct

MAYO ECG Exam Test Questions Answers Verified 100% Correct Where do you place the lead? - ANSWER -right sternal border, 4th intercostal space L! Rhythm with only p waves - ANSWER -Ventricular standstill SA node - ANSWER -the node consisting of specialized cells capable of automaticity at a rate of 60-100 Sinus Tachycardia - ANSWER -a rhythm characterized by 100-160 beats per minute Automaticity - ANSWER -the ability of the cell to spontaneously initiate an impulse Normal SR - ANSWER -Impulse that initiates within the SA node at a rate of 60 100 bpm Escape Rhythm or beat - ANSWER -when the sinus node fails and a lower pacemaker takes over Sinus Pause or Arrest - ANSWER -the sinus node fails to generate an impulse for one or more beats rate 40-60 p wave inverted, occurs before, during, or after qrs PR less than 0.12 - ANSWER -junctional escape rhythm rate 60-100 p wave inverted, occurs before, during, or after qrs PR less than 0.12 - ANSWER -accelerated junctional rhythm rate 100-159 p wave inverted, occurs before, during, or after qrs PR less than 0.12 - ANSWER -junctional tachycardia primary pacemaker of the heart - ANSWER -SA node carry the impulse to allow for ventricular filling - ANSWER -intra atrial pathways Delays impulse to allow for ventricular filling - ANSWER -AV node Connects av node to bundle branches - ANSWER -Bundle of HIS carry electrical impulses to the respective ventricles - ANSWER -right and left bundle branches terminal conduction system of ventricles - ANSWER -purkinje fibers SA node rate - ANSWER -60-100 Junctional Tissue rate - ANSWER -40-60 Ventricular Tissue - ANSWER -20-40 narrow QRS, rate 160 - ANSWER -SVT rate less than 40 beats per minute and has a wide QRS - ANSWER Idioventricular rhythm vfib, v tach, agonal, ventricular standstill - ANSWER -lethal every other p wave is blocked somewhere in the AV conduction system - ANSWER -second degree AV block 2:1 conduction PR interval progressively lengthens on consecutively conducted beats - ANSWER -second degree av block type 1 no p waves are blocked but AC conduction (PR time) is prolonged - ANSWER first degree av block some p waves are blocked from being conducted through to the ventricle, the PR interval is constant on those that are conducted - ANSWER -second degree AV block type 2 atrial and ventricular activity are regular, pr intervals are variable - ANSWER third degree AV block Pathway of heart conduction - ANSWER -SA node Intra atrial pathway AV node Bundle of HIS Right and Left Bundle Branches Purkinje Fibers 1st degree AV block - ANSWER -prolonged PR interval 2nd degree AV block type 1 - ANSWER -PR interval long, longer, drop the drop is a P wave not followed by a QRS 2nd degree AV block type 2 - ANSWER -Constant PRI w .2, random dropped QRS R waves irregular 3rd degree AV block - ANSWER -atria and ventricles beat independently of each other (P waves have no relation to QRS waves) P and R waves both regular Sinus Bradycardia - ANSWER -60 normal sinus rhythm normal sinus rhythm - ANSWER -heart rhythm originating in the sinoatrial node with a resting rate of 60 to 100 beats per minute Atrial Flutter - ANSWER -Rate:Atrial 250-350 Ventricular: 100 -175 P: Irregular or absent, often "saw tooth" QRS: Normal Conduction: AV Block (2:1 3:1, 4:1) Rhythm: Regular (usually) PVC (Premature Ventricular Contraction) - ANSWER -in many cases no P wave followed by a large QRS complex that is premature, followed by a compensatory pause ventricular pacing - ANSWER -spike prior to QRS Complex