EKG Flashcards
what is hypoxia
no oxygen
what s ischemia
no blood flow
what does too much K do
stops the heart, causes high T wave first
normal K
3.5 to 5
normal Ca
8.6 to 10.3
normal Mg
1.5 to 2.5
normal Na
136 to 145
normal Cl
98 to 106
size of small sq and big sq
0.04 sec and 0.20 sec
bpm of normal sinus rhythm
60-100 bpm
describe sinus bradycardia
- <60 bpm
- avoid suctioning d/t gag
- treatment: pacemaker and atropine
describe first degree heart block
- PR is prolonged
- rate is <60
- treatment is atropine
describe wekenbach
- second degree HB
- PR gets longer longer longer then drops a beat
- treatment: pacemaker or atropine
describe mobitz type two
- second degree HB
- beat drops every other
- poor perfusion
describe third degree HB
- AV dissociation
- P wave is independent from QRS
- treatment is pacemaker
describe PACs
do NOT treat
irregular beat d/t sympathetic stimulation
cardiac conduction
1) sa node (initiates rate)
2) av node
3) bundles of His
4) purkinjie fibers
describe dubins method
300, 150, 100, 75, 60, 50, 43, 38, 33, 30
_______ of chambers provokes their contraction
depolarization
this is the resting between beats
straight line on paper
isoelectric line
ability to contract
automaticity
describe atrial flutter
saw tooth
atrial rate about 250-350
describe atrial fib
- no p waves
- always irregular
- *most common dysrthythmia d/t CHF
treatment of atrial fib
- cardizem (CCB)
- digoxin (glycoside)
- amiodarone
- cardioversion
- anticoagulant