Difference between revisions of "Right bundle branch block"

(Created page with "#QRS > 0.12 in limb leads #Triphasic QRS (rSR'), often w/ ST depression & TWI in V1-V3 ##V1 must have a positive complex #Slurred S in 1 and V6 File:RBBB.jpg|thumb...")
 
 
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#QRS > 0.12 in limb leads  
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==Evaluation==
#Triphasic QRS (rSR'), often w/ ST depression & TWI in V1-V3  
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[[File:Bundle Branch Block.png|thumbnail]]
##V1 must have a positive complex  
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*QRS > 0.12 in limb leads  
#Slurred S in 1 and V6
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*Triphasic QRS (rSR') or biphasic (qR), often with ST depression & TWI in V1-V3  
[[File:RBBB.jpg|thumb|center|500px|RBBB]]
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**V1 must have a positive complex  
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**Second R wave in V1 is ''always'' taller than the first (rSR')
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*Slurred S in 1 and V6
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*ST depression and TWI in other leads should arouse suspicion
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*'''Any ST elevation is abnormal in RBBB and must prompt evaluation for [[STEMI]]'''
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[[File:Rbbb morphology lead vi wm.jpg|thumbnail|RBBB V1 Morphologies]]
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[[File:RBBB.jpg|thumb|RBBB]]
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==Differential Diagnosis==
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{{Tachycardia (wide) DDX}}
  
 
==See Also==
 
==See Also==
 
*[[ECG (Basics)]]
 
*[[ECG (Basics)]]
  
== Source ==
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==References==
*Adapted from Niemann, Lampe, Pani, Donaldson, ECGpedia.org
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<references/>
 
*Journal of Electrocardiology. Vol 43 (2010). 40-42.
 
*Journal of Electrocardiology. Vol 43 (2010). 40-42.
  
[[Category:Cards]]
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[[Category:Cardiology]]

Latest revision as of 06:36, 5 April 2019

Evaluation

Bundle Branch Block.png
  • QRS > 0.12 in limb leads
  • Triphasic QRS (rSR') or biphasic (qR), often with ST depression & TWI in V1-V3
    • V1 must have a positive complex
    • Second R wave in V1 is always taller than the first (rSR')
  • Slurred S in 1 and V6
  • ST depression and TWI in other leads should arouse suspicion
  • Any ST elevation is abnormal in RBBB and must prompt evaluation for STEMI
RBBB V1 Morphologies
RBBB

Differential Diagnosis

Wide-complex tachycardia

Assume any wide-complex tachycardia is ventricular tachycardia until proven otherwise (it is safer to incorrectly assume a ventricular dysrhythmia than supraventricular tachycardia with abberancy)

^Fixed or rate-related

See Also

References

  • Journal of Electrocardiology. Vol 43 (2010). 40-42.