With Verified Solutions
sympathetic autonomic innervation of the heart - ANSWER--releases epi,
increases hr, CO and BP, Increased firing of the SA node
Automaticity electrical heart cells - ANSWER--Cells ability to spontaneously
generate impulses
p wave - ANSWER--atrial depolarization
QRS complex - ANSWER--ventricular depolarization
pr interval - ANSWER--time from sa node to av node
t wave - ANSWER--ventricular repolarization
sa node impulse rate - ANSWER--60-100 bpm
av node impulse rate - ANSWER--40-60 bpm
ventricular impulse rate - ANSWER--20-40 bpm
small box ecg - ANSWER--0.04 seconds
big box ecg - ANSWER--0.20 second
, NYU ECG Exam Questions & Answers 2025-2026
With Verified Solutions
6 second strip method - ANSWER--Count QRS complexes on a 6-second strip and
multiply by 10.
BETWEEN THE 3 TICKS !!
PR interval - ANSWER--0.12-0.20. ( 3-5 boxes)
qrs complex - ANSWER--<0.12 ( 3 boxes )
p wave regularity - ANSWER--of all p waves are in the same direction,
depolarizations is coming from the same foci
normal sinus rhythm - ANSWER--60-100bpm
pr interval : 0.12-.20
p wave : regular
qrs: <.12
Sinus Tachycardia - ANSWER--regular 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