A beat that arises from ventricular in origin, the myocardium itself, or the conduction pathways in the ventricles. ---Beat is usually wide and bizzarre looking Can be unifocal (all PVC's look the same) or multifocal (different PVC's - indicative of more irritation to heart)
CHAOTIC RHYTHM, NO DISTINCT PATTERN Rate & rhythm: indeterminable and irregular, NO P, R chaotic PRI: None QRS: indeterminable !!!!!!Life-threatening!!!!!!!!!
What is the treatement for pulse-less V Tach, or V Fib?
1. Attempt defibrillation 120-200 J Biphasic, 360 J Mono. 2. Followed by immediate CPR (chest comp for 2 min before pulse check) 3. Drugs delivered during CPR, after rhythm checks: Epi, Vasopressin, Amiodarone, Lidocaine
Rate: varies Rhythm: R-R irregular; P-P regular PRI: varies, PRI increases in size until a QRS complex is dropped (norm-longer-longer-longer-dropped QRS-normal...) QRS: 0.04-0.12
2nd degree heart block Classic Heart block, TYPE 2
Rate & Rhythm: rate varies, rhythm normal (occ dropping of QRS - random) - similar to Wenckebock but no progression towards QRS drop PRI & QRS: normal except when QRS is dropped !!!!!!!!!LIFE THREATENING!!!!!!!! can lead to complete block
3rd degree heart block COMPLETE BLOCK
Rate & Rhythm: Regular PRI: varies, no relationship with QRS complexes QRS: normal duration !!!!!!!LIFE THREATENING, W/O A PACEMAKER, PT WILL DIE!!!!!! p wave & QRS complexes march out independently of eachother