todays quiz

STEMI

ST Elevation Myocardial Infarction

ST Deppression

6 months after cardiac injury

ischemic event

event where heart is slowly dying

P wave shape

smooth and positive

P wave duration

0.12s or less

P wave amplitude

0.25mV or less

QRS Shape

R- positive and sharp

Q+S- negative and sharp

QRS duration

0.12s or less

T shape

positive and smooth

U wave shape

after T, very very small

define segment

region between 2 waves (wave not included)

P-R segment placement

end of P to beginning of Q

PR segment shows

slowing of conduction through AV node (gatekeeper)

ST segment placement

end of QRS to beginning of T

ST segment shows?

time between ventricular depolarization and repolarization

Define J point

point of when S reaches isoelectric line

define Interval

a segment + 1 or 2 waves

PR interval

beginning of P to beginning of QRS

PR interval measures what?

time from start of atrial depolarization to beginning of ventricular depolarization ;

;l time it takes for an electrical impulse to travel from SA node all the way through the AV node