EKG Stuff Flashcards
What is the normal time frame of a PR interval?
0.12-0.20 seconds
3-5 small boxes)
What is the normal time frame of QRS?
0.04-0.10
1-2 1/2 boxes
What is the normal time frame of QT?
~0.36
Long PR indicates…
1st degree AV block
Long QRS indicates…
bundle branch block
Long QT indicates…
heart isn’t relaxing soon enough (meds can do this)
Peaked T wave indicates…
hyperkalemia
Flat T wave indicates…
hypokalemia or ischemia
How do you check to see if the heart is in regular rhythm?
measure between Ts, if equal than it’s a regular rhythm
What is CK?
byproduct of break down of muscle tissue
What is abnormal in the ECG in a 1st degree AV block?
PR interval is too long, >0.20 seconds
-can be benign or severe
Asystole is only asystole if …
you have checked all leads (no loose leads) and it’s asystole in all leads
What is abnormal in the ECG in a sinus tachycardia?
All complexes present (QRST) but over 100 bpm
100-160 bpm
What 2 meds treat sinus tachycardia?
beta blockers and calcium channel blockers
What medication can treat sinus bradycardia?
atropine
Bradycardia= ____ bpm
less than 60 bpm
What is abnormal in the ECG in a premature atrial contraction (PAC)
- irregular rhythm
- P wave: premature and abnormal, or hidden
PVS usually has no …..
the ECG looks…
no perfusion, ECG looks really weird and irregular weird QRSs
What is abnormal in the ECG in Atrial Fibrillation?
Heart rate: A-350-650 bpm, V-slow to rapid
Rhythm: irregular
P wave: fibrillatory (fibbing out, fine-course)
Normal QRS
What is abnormal in the ECG in Atrial Flutter
Heart Rate: A-220-430 bpm V- <300bpm
Rhythm: irregular or variable
QRS: normal
What is abnormal in the ECG in angina pectoris?
ST segment depression
T wave flattening or inversion
What abnormal ECG change occurs with left ventricular hypertrophy?
tall R wave
For which cardiac rhythms is defibrillation used?
Ventricular fibrillation or pulseless ventricular tachycardia
Pacemakers are for pts with…
bradycardia
