Shaina
Forum Elite
Topics: 23
Posts: 239
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how can i dx heart block by just stem of question,i am asking this coz am not good at ECG,but sometimes few q's can be answered by ruling out other options,so can come one give me hints
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| cirus
Forum Guru
Topics: 108
Posts: 740
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1st look at heart rate..
HB 1st degree---> QRS > 0.2sec
2nd dgree--> Dropped beats
regular PR intervals--> Mobitz type 2
progressively widening---> Mobitz type one
3rd dgree---> loss of relation between QRS & P waves
LBBB & RBBB---> QRS >0.12 (i always mix them up)
then look on V1 & V6--->
If only rS in V1 & bifid R in V6---> LBBB
If rSR in V1 & wide S in V6 --> RBBB
hope that helps
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| Step2300
Forum Newbie
Topics: 2
Posts: 10
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My 2 additional cents:
Type 1 Mobitz is also known as Wenckebach
First Aid uses the mnemonic "WiLLiam MaRRow" for LBBB & RBBB
- LBBB--> "W" QRS pattern in V1-2 and "M" QRS pattern in the other precordial leads
- RBBB--> "M" QRS pattern in V1-2 and "W" QRS pattern in the other precordial leads.
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| Step2300
Forum Newbie
Topics: 2
Posts: 10
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That should be WiLLiaM MaRRoW
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| hello123
Forum Newbie
Topics: 5
Posts: 11
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LAD + M pattern in v5, v6 + deep S in v1 , v2 = LBBB
RAB + rsr' in V1, V2 + deep s v5, v6 = RBBB
I go by axis first.
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