ECG interpretation

P wave indicates…

atrial depolarization

P wave duration

0.11 sec

PR segment location

end of P wave to beginning of QRS

PR interval indicates…

time required for atrial depolarization and delay

PR interval duration

0.12-0.20 sec

QRS complex indicates…

ventricular depolarization

QRS complex duration

0.04-0.10 sec

J point location

where QRS ends and ST begins

ST segment indicates…

ventricular depolarization to repolarization

T wave indicates…

ventricular repolarization

is the P or T wave taller?

T

inversion on ECG meaning

ischemia

peak on ECG meaning

hyperkalemia/injury

U wave indicates…

delay in repolarization from purkinje fibers

P-P indicates

rate of atrial kicking

PR interval location

beginning of P wave to beginning of QRS

segments are…

isoelectric

R-R indicates…

rate of ventricles kicking

is HR measured through atrial or ventricular contraction?

ventricular

QT interval location

beginning of QRS to end of T

QRS location

end of PR segment to J point