APEX EKG Test Exam Questions And Answers Verified 100% Correct

APEX EKG Test Exam Questions And Answers Verified 100% Correct Sinus Bradycardia - ANSWER -Regularity: atrial and ventricular rate are regular Rate: 60 beats per minute P wave: upright, smooth, round and uniform shape, one for every QRS complex PRI : 0.12 to 0.20 seconds QRS: 0.06 to 0.10 seconds QTI: 0.36 to 0.46 seconds T wave: upright, smooth and round uniform shape Sinus Tachycardia - ANSWER -Regularity: atrial and ventricular rate are regular Rate: 100 beats per minute P wave: upright, smooth, round and uniform shape, one for every QRS complex PRI : 0.12 to 0.20 seconds QRS: 0.06 to 0.10 seconds QTI: 0.36 to 0.46 seconds T wave: upright, smooth and round uniform shape Sinus Arrhythmia - ANSWER -Regularity: atrial and ventricular rate are the same but the rhythm will be slightly irregular Rate: variable, can be bradycardia to normal P wave: upright, smooth, round and uniform shape, one for every QRS complex PRI : 0.12 to 0.20 seconds QRS: 0.06 to 0.10 seconds QTI: 0.36 to 0.46 seconds T wave: upright, smooth and round uniform shape Sinus Arrest and Sinus Pause - ANSWER -Regularity: Regular but interrupted (by a pause) Rate: can occur at any heart rate P wave: normal sinus P waves before the pause PRI: 0.12 to 0.20 seconds before the pause, may be shorter or absent after the pause QRS: 0.06 to 0.10 seconds on the sinus beats, on the escape beats the QRS may be narrow or wide depending on which pacemaker of the heart resumes after the pause QTI: 0.36 to 0.46 seconds for the sinus beats Premature Atrial Contractions PACs - ANSWER -Regularity: underlying atrial rate is regular except for early beat, ventricular rate is regular Rate: determined by the underlying rhythm P wave: upright, smooth, round and uniform shape, EXCEPT for the premature beat, it will shaped differently PRI : 0.12 to 0.20 seconds except for early beat QRS: 0.06 to 0.10 seconds and all are uniform QTI: 0.36 to 0.46 seconds T wave: upright, smooth and round uniform shape Other: because the electrical stimulus is originating somewhere in the atria (but NOT the SA node) it affects the P wave formation Atrial Fibrillation - ANSWER -Regularity: atrial and ventricular rate irregularly irregular Rate: Atrial rate: unable to determine they are beating in excess of 350 to 700 beats per minute Ventricular rate: when the HR is 100 or less beats per minute, the rate is said to be "controlled"; if the ventricular rate is 100 beats per minute then the rhythm is said to have a RVR (rapid ventricular response) P wave: absent, indiscernible, replaced by fibrillatory waves PRI : indiscernible QRS: 0.06 to 0.10 seconds QTI: may be indiscernible T wave: may be indiscernible Atrial Flutter - ANSWER -Regularity: atrial usually regular, ventricular rate may be irregular depending on the conduction rate thru the AV node Rate: Atrial rate: 250 to 350 beats per minute Ventricular rate: usually 60 to 150 beats per minute depending on the conduction thru the AV node P wave: abnormal, sawtoothed appearance known as "flutter waves", also described as "picket fence shaped or V-shaped" PRI : indiscernible, because there are no true P waves QRS: 0.06 to 0.10 seconds QTI: indiscernible T wave: indiscernible Atrial Tachycardia - ANSWER -Regularity: R-R intervals are regular, overall rhythm is regular Rate: Atrial and ventricular rates are the same. The rate is usually between 160-250 beats/min P wave: There is one p wave in front of every QRS. The P waves may appear different than a sinus P wave due to the rapid rate. They can be notched or flattened, and in some cases the P wave may be lost within the QRS complex PRI : 0.12 to 0.20 seconds, PRI is consistent, but may not be easily measured due to the rate QRS: 0.06 to 0.10 seconds and all are uniform QTI: usually indiscernible T wave: usually indiscernible Supraventricular Tachycardia (SVT) - ANSWER -Regularity: atrial and ventricular rate regular Rate: greater than 160 beats per minute, (can be 200 beats per minute or more) P wave: abnormal, small and upright, may be hidden in QRS if rate is very fast PRI : less than 0.12 seconds, if present QRS: typically less than 0.06 - 0.08 seconds, very narrow QTI: indiscernible T wave: indiscernible Paroxysmal Supraventricular Tachycardia (PSVT) - ANSWER -Paroxysmal refers to a rhythm that starts and stops suddenly