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12 Cards in this Set
- Front
- Back
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Criteria for LBBB
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QRS =/> 0.12
RSR' in V5 & V6 ST-T changes in 1, V5, V6 QRS mostly negative in V1 Left Axis deviation |
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Criteria for RBBB
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QRS =/> 0.12
RSR' in V1 & V2 S wide in 1, V5, V6 ST-T changes in 1, V5, V6 QRS upright with tall notched R in V1 Right Axis deviation |
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Determining VT vs SVT
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R-R
Usually regular but may vary in VT. Regular or irreg. in SVT AV dissociation in VT QRS > 0.16 in VT If axis is between -90 to +/-180 then VT |
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Quick Determination of hexaxical axis-
Normal axis (between (0 & +90) |
Lead 1 (+)/AVF (+)
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Quick Determination of hexaxical axis-
right deviation(between +90 & +/-180) |
Lead 1 (-)/AVF (+)
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Quick Determination of hexaxical axis-
Extreme right deviation (between (+/-180 & -90) |
Lead 1 (-)/AVF (-)
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Quick Determination of hexaxical axis-
left deviation(between -90 & +/0) |
Lead 1 (+)/AVF (-)
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Criteria for r/atrial enlargement
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Diphasic P-wave in V1 with first portion larger than second portion.
Tall peaked P-waves in 11, 111 & AVF |
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Cause of r/atrial enlargement
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COPD
R/atrial enlargement is sometimes called P-Pulmonale |
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Criteria for l/atrial enlargement
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Diphasic P-wave in V1 with second portion larger
Wide notched P-waves may be present in 11, 111 & AVF |
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Criteria for r/ventricular enlargement
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In V1 tall R-wave with small S-wave with the R waves from V1 to V6 becoming progressively smaller. These tracings are the reverse of normal
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Criteria for l/ventricular enlargement
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Tall QRS complexes in chest leads.
In V1, deep S wave & tall R-wave in V5 - both adds up to >35mm. R-wave in either V5 or V6 is =/>26mm |
