Other Abnormal Rhythms
·
Atrial tachycardia (paroxysmal
atrial tachycardia) – SVT (Supraventricular Tachycardia):
o Narrow QRS complex (always exclude atrial flutter with 2:1 block)
o Often abrupt onset, last for seconds to many hours, then abrupt offset
o Rate is usually 160 – 200/min
o Therapy: vagal stimulation (carotid massage, one side at a time),
adenosine, amiodarone, beta-blockers or digoxin. If LV failure, chest pain or
HR > 220 bpm then synchronised counter-shock
·
Premature Atrial Complexes (PAC):
atrial ectopic beats. Small spike before premature but normal width QRS
·
Junctional or Nodal rhythm:
regular rhythm. May be no detectable P wave (due to retrograde firing into
atrium) or inverted P-wave with short PR interval. P wave may be buried in QRS
complex. Rate of 40 – 60 bpm. Reduction in atrial filing. Treatment often not
indicated
·
Premature Ventricular Complexes
(PVC‟s): bizarre, wide QRS complexes triggered by an ectopic ventricular focus.
Most common post-MI rhythm. Unifocal PVC‟s (each complex looks the same) or
multifocal (each complex looks different from others)
Related Topics
Privacy Policy, Terms and Conditions, DMCA Policy and Compliant
Copyright © 2018-2023 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.