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Resp 16 IV
electrocardiograms Description of waves
Question | Answer |
---|---|
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) |