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| | {{Case| |
| | |previouspage= Case 2 |
| | |previousname= Case 2 |
| | |nextpage= Case 4 |
| | |nextname= Case 4}} |
| [[Image:KJcasus9.jpg|thumb| The ECG]] | | [[Image:KJcasus9.jpg|thumb| The ECG]] |
| * Following the 7+2 steps:
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| **Rhythm
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| ***'''The ECG shows a regular rhythm with normal P waves (positive in I, III and AVF, negative in AVR), followed by QRS complexes. Sinusrhythm'''
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| **Heart rate
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| ***'''78 bpm'''
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| **Conduction (PQ,QRS,QT)
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| ***'''PQ: 180ms QRS: 160ms QT: 370ms QTc: 420ms
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| **Heartaxis
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| ***'''Negative in III, AVF and AVR, positive QRS complexes in I, II and AVL: horizontal heart axis'''
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| **P wave morphology
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| ***'''The P waves have normal morphology.'''
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| **QRS morphology
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| ***'''Wide QRS complexes with [[[LBBB|left bundle branch block]]] pattern.'''
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| **ST morphology
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| ***'''ST elevation in V1-V3, AVR. ST depression in I, II, III, AVF, V4-6. The Sgarbossa criteria for ischemia in LBBB are not met (nog concordant ST deviation, no ST depression V1-V3, nog discordant ST elevation > 5 mm).'''
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| **Compare with the old ECG (not available, so skip this step)
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| **Conclusion?
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| '''Sinusrhythm with left bundle branch block, comparison with an old ECG is mandatory to evaluate whether the LBBB is new (a sign of [[myocardial infarction]]) or old.'''
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| {{clr}} | | {{clr}} |
| | Try to interprete this ECG using the 7+2 step method |
| | [[Answer Case 3|Answer]] |