Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/25

Click to flip

25 Cards in this Set

  • Front
  • Back
P wave
atrial depolarization
PR interval
conduction delay through AV node
normal 0.12 - 0.2 sec (3-5 small boxes)
QRS complex
ventricular depolarization
normal < 120 msec
QT interval
mechanical contraction of ventricals

< 1/2 R-R @ HR < 100
normal QTc < 440 msec
T wave
inversion?
ventricular repolarization
inversion --> recent MI
masked w/in QRS
atrial repolarization
ST segment
ventricles depolarIZED
-isoelectric, tracing is flat
U wave
hypokalemia
bradycardia
-by definition follows the T-wave
ventricular tachycardia
shifting sinusoidal waveforms
Torsades de pointes

*can progress to V-fib
*anything that prolongs QT can predispose to this
irregularly irregular baseline
no discrete P waves
irregularly spaced QRS complexes
atrial fibrillation
atrial fibrillation tx
beta-blocker
Ca channel blocker
Digoxin
rapid succession of identical, back-to-back atrial depolarization
"sawtooth appearance"
atrial flutter
Tx of atrial flutter
attempt to convert to sinus rhythm
*class IA
*class IC
*class III
*beta blockers
PR interval prolonged (>200 msec)
asmptomatic
1st degree AV block
progressive lengthening of PR interval until beat is "dropped" (P wave not followed by QRS)
2nd degree AV block
Mobitz type I (Wenckebach)
dropped beats not preceded by change in length of PR interval
often 2:1
2nd degree heart block
Mobitz type II

may progress to 3rd degree
both P waves & QRS present, but bear no relation to each other
atrial rate faster than ventricular
3rd degree AV block (complete)
3rd degree heart block

-tx?
-causes?
3rd degree heart block

-tx?
**pacemaker

-causes?
**lyme dz
**(mobitz type II?)
completely erratic rhythm
no identifiable waves
ventricular fibrillation

fatal w/o CPR & defibrillation
ECG Strip Graph Paper
5 big boxes = 1 second
1 big box = 200 msec
1 small box = 40 msec
Infarct Location - leads w/Qwaves:

V1-V4
Anterior wall (LAD)
Infarct Location - leads w/Qwaves:

V1-V2
Anteroseptal (LAD)
Infarct Location - leads w/Qwaves:

V4-V6
Anterolateral (LCX)
Infarct Location - leads w/Qwaves:

I, aVL
Lateral wall (LCX)
Infarct Location - leads w/Qwaves:

II, III, aVF
Inferior wall (RCA)