NYU ECG Exam Questions & Answers 2024/2025

NYU ECG Exam Questions & Answers
2024/2025

sympathetic autonomic innervation of the heart - ANSWERSreleases epi, increases hr, CO and BP,
Increased firing of the SA node



Automaticity electrical heart cells - ANSWERSCells ability to spontaneously generate impulses



p wave - ANSWERSatrial depolarization



QRS complex - ANSWERSventricular depolarization



pr interval - ANSWERStime from sa node to av node



t wave - ANSWERSventricular repolarization



sa node impulse rate - ANSWERS60-100 bpm



av node impulse rate - ANSWERS40-60 bpm



ventricular impulse rate - ANSWERS20-40 bpm



small box ecg - ANSWERS0.04 seconds



big box ecg - ANSWERS0.20 second



6 second strip method - ANSWERSCount QRS complexes on a 6-second strip and multiply by 10.

BETWEEN THE 3 TICKS !!

, PR interval - ANSWERS0.12-0.20. ( 3-5 boxes)



qrs complex - ANSWERS<0.12 ( 3 boxes )



p wave regularity - ANSWERSof all p waves are in the same direction, depolarizations is coming from the
same foci



normal sinus rhythm - ANSWERS60-100bpm

pr interval : 0.12-.20

p wave : regular

qrs: <.12



Sinus Tachycardia - ANSWERSregular rhythm

rate : 101-160

pr interval : 0.12-.20

qrs<.12

cx: normal tone, fever ,exercise

tx: Underlying cause

significance : inceeased o2 demand is a warning sign



sinus bradycardia - ANSWERSrhythm: regular

rate : < 60

p wave : norm

pr interval : 0.12-0.20

qrs: < .12



sinus arrhythmia : - ANSWERSrhythm : irregular ( normal variation with respirations )

rate 60-100