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Resp 16 IV

electrocardiograms Description of waves

QuestionAnswer
Normal sinus rhythm rate 60-100 Normal complexes
Sinus Bradycardia everything is normal but it's a slower rate (longer difference between R's)
PVC (Premature ventricular contraction) an abnormal complex originating in ventricle --wide QRS, --compensatory pause follows
Sinus tachycardia SINUS= normal, rate greater than 100. (exercise, smoking, anxiety, etc) Faster (shorter distance between R's)
PAC (premature atrial contraction) caused by irritability of atria -early contraction
Sinus arrhythmia rate varies between breathing.. common in children R-R intervals differenitate
Atrial fibrillation Atria depolarized (contracts) at high rate (up to 600/min)... Produces irregular, wavy pattern in place of normal P waves, -- baseline is irregular
Atrial flutter Atria simulated about 300 times/min ---charc by saw-toothed shape waves
Ventricular tachycardia 3 or more consecutive PVC's.. HR usually 120-200/min.. LIFE THREATENING... Wide QRS=PVC (heart does not have time to fill up so BP decreases).. P waves are hard to see
Ventricular fibrillation Ventricles do not beat in coordinated fashion... no blood flow... PT unconcious..waves in irregular, CHAOTIC fashion
Asystole flat line Do not shock unless last option do CPR instead
PEA (pulseless electrical activity) no pulse or cardiac output Pattern appears normal... assess with doppler
Acute hypoxia occurs first (tachycardia)
severe hypoxia prolonged time (bradycardia)
Created by: TnJFarrington12