CV review & Visuals

automaticity

cells ability to generate an impulse
excitability

non-pacemaker cells ability to respond to an impulse
conductivity
- cardiac cells ability to send an impulse to another cell
- creates "P" wave & QRS complex
contractility

contraction of atrial and ventricular cells from electrical stimuli
Which node begins conduction and creates the "P" wave

SA
Which node allows electrical stimulation to travel to ventricles and creates the P-R interval

AV (gatekeeper)
What causes a delay in conduction occur resulting in a widening of the QRS interval, made of purkinje fibers

Bundel of his
artifact

muscle movement that appears on an EKG
"P" waves are
- sinus rhythm
- atrial depolarization
QRS complex is

depolarization of ventricles
an elevated ST segment indicates
(fireman's hat)

ischemia
T wave is

repolarization of ventricles
Regular sinus rhythm
Sinus tachycardia
Sinus bradycardia
A-fib
- Atrial flutter ( sawtooth, more regular pattern than A-fib)
- can't be seen w/out EKG
- pulse feels normal
- PVC
- compensatory pause after PVC to get SA node to provide P wave
Ventricular tachycardia
Ventricular fibrillation
Asystole
What do we need to teach pt with dysrhythmias
- Take pulse
- avoid caffine
- CPR

Author

tville01

198348

Card Set

CV review & Visuals

Description

CV review & Visuals

Updated

2013-02-06T14:08:05Z

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