EXAM 1 Critical Care- Kahoot ?s

what is a normal PR interval?

.12-.20

how many seconds in time is 1 small box on ekg paper?

0.04

what is the pacemaker rate of the purkinje fibers

20-40

what is a normal QRS duration?

less than .12

electrical activity through heart?

SA node, atria, AV node, purkinje fibers

what part of the ecg represents atrial depolarization?

P

how many boxes above the isoelectric line would make an ST segment elevated?

2

what makes normal sinus rhythm, NSR?

P for every QRS and QRS on every P, PR interval 0.12-0.20, QRS duration less than 0.12.

what 3 factors do you need to have SVT?

narrow QRS

HR greater than 150

regular rhythm

what rhythm is known as the "dying heart"

agonal

how many pvc's in a row do you need to have a run of v-tach

4

what is it called when your patient has no pulse but an organized rhythm on the monitor?

pulseless electrical activity

atrial flutter has p waves

false

what rhythm has a PR interval of greater than .20

1st degree AV block

which heart rhythm is always regular but may not have a P wave and if there is one it is inverted

junctional

a rhythm with QRS complexes are greater than .12 and HR is greater than 100

v-tach

what two things makes atrial fibrillation?

irregular

no P waves

what do you see in a V paced rhythm

spike followed by a QRS

when someone has a suspected MI, what findings will you look for on an EKG?

ST segment elevation greater than/ equal to 2 boxes above baseline

which STEMI would you use caution with admin of nitro?

inferior