Belajar EKG PREMATURE JUNCTIONAL COMPLEX (PJC), JUNCTIONAL RHYTM, ACCELERATED JUNCTIONAL, JUNCTIONAL TACHICARDIA
NSR WITH PJC
A Premature junctional Complex (PJC) arises an irritable focus within the AV junction. Characteristic of a PJC include: 1) an absent or inverted P wave in lead II; 2) a shortened PR interval - less than 0,12 second; and 3) the complex comes early or premature.
JUNCTIONAL RHYTM
Junctional Rhytm - also called junctional escape rhytm- originates from the AV Junction (AV node and Bundle of HIS). The expected pacemaker rate of the AV junction 40-60/minute. in lead II, a junctional rhytm presents with inverted or absent P waves. Note: an Absent P wave in junctional rhytm is also associated with loss of atrial kick.
ACCELERATED JUNCTIONAL
Accelerated Junctional rhytm results from enhanced automaticity, increased symphatetic nervous system activity (catecholamines) or ischemia. key features of this rhytm include a rate between 60-100/minute, inverted or absent P waves (in lead II), shortened PR interval, And QRS complexes that are usually narrow.
JUNCTIONAL TACHICARDIA
Junctional Tachicardia results from enhanced automaticity, increased sympathetic activity (cathecolamines) and ischemia. Key features of this rhytm include a rate over 100/minute, inverted or absent P wave buried in each QRS complex displayed here in this ECG.
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