APEX TESTS COMPILATION BUNDLE ACTUAL TEST PAPER WITH
COMPLETE ANSWERS
⩥ 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
COMPLETE ANSWERS
⩥ 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
