Junctional arrhythmias

محاضرت دورة ECG COURSE

1. Junctional Arrhythmias Rami alkhatib

2. outlines Definition of junctional rhythm Causes of junctional rhythm Junctional rhythm ECG Accelerated junctional Junctional tachycardia Treatment complication

3. J u n c t i o n a l R h y th m s • The A V n o de c a n a c t a s a b a c k up p a c em a k er in t he e v e n t o f f a ilu r e o f t he S A n o de . ECG f e a t u r es t h a t a r e c o mm o n t o a ll jun ct i o n a l r h y t hms in c lude: l a c k o f P w a v e s , o r P w a v es t h a t a r e i n v e r t ed o r buried w i th in t he Q R S c o m p l e x e s , o r t h a t c o me a f t er t he Q R S c o mpl e x. The P R i n t e r v a l c a n be a b s e n t , s h or t , o r r e t r o g r a de. • •

4. Causes : J un c t io n a l R h y t h m • • • • • S A N o d e D is ea se I nc r ea s ed V a g al T o n e D i g i t a li s I n f e ri or W a l l M I

5. J u n c t i o n a l R h y th m • • • R at e: 4 –60 bpm R h y th m: R egul a r P W a v es: A b s e n t , i n v e r t ed, bu r ied, o r r e t r o g r a de P R I nt e r v a l: N o ne, s h or t , o r Q R S : N or m a l

6. A C C E LE R A TE D J UN C T IO N A L R H YT HM • • • • R at e: 6 1 –100 bpm R h y th m: R egul a r P W a v es: A b s e n t , i n v e r t ed, bu r ied, o r r e t r o g r a de P R I nt e r v a l: N o ne, s h or t , o r r e t r o g r a de Q R S : N or m a l

7. J UN CT I O N A L T A C H Y CA R DI A • • • • R a t e : 101–180 bp m R h yt h m : R e g ul a r P W a v e s: A b se n t, i n v er t e d , bu r i e d , or r e t r o g r a d e PR I n t e r v a l : N o n e, sh o r t, o r r e t r og r a d e Q R S : N o rm a l

8. References Huff, J. (2006). ECG workout: Exercises in arrhythmia interpretation. Lippincott Williams & Wilkins. Hampton, J. R. (2013). 150 ECG problems. Elsevier Health Sciences. Khan, M. G. (2008). Rapid ECG interpretation. Springer Science & Business Media