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Answer Case 2: Difference between revisions
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***'''This is a regular rhythm and every QRS complex is preceded by a p wave. The p wave is positive in II,III, and AVF and thus originates from the sinus node. Conclusion: sinus rhythm.''' | ***'''This is a regular rhythm and every QRS complex is preceded by a p wave. The p wave is positive in II,III, and AVF and thus originates from the sinus node. Conclusion: sinus rhythm.''' | ||
**Hartfrequency | **Hartfrequency | ||
***'''Use the 'count the squares' method (a bit less than 3 large squares ~> 300-150-100), thus about 110 bpm.''' | ***'''Use the 'count the squares' method (a bit less than 3 large squares ~> 300-150-100), thus about 110 bpm and thus sinustachycardia.''' | ||
**Conduction (PQ,QRS,QT) | **Conduction (PQ,QRS,QT) | ||
***'''PQ-interval=0. | ***'''PQ-interval=0.10sec (2.5 small squares), QRS duration=0.10sec, QT interval=320ms''' | ||
**Hartaxis | **Hartaxis | ||
***'''Positive in I, II, III | ***'''Positive in I, II, negative in III and AVF. Thus a horizontal (normal) heart axis.''' | ||
**P wave morphology | **P wave morphology | ||
***'''The p wave is rather large in II, but does not fulfill the criteria for right atrial dilatation.''' | ***'''The p wave is rather large in II, but does not fulfill the criteria for right atrial dilatation.''' | ||
**QRS morphology | **QRS morphology | ||
***''' | ***'''The QRS shows a slurred upstroke or delta wave.''' | ||
**ST morphology | **ST morphology | ||
*** | ***Negative T wave in I and AVF. Flat ST in V3-V5.''' | ||
**Compare with the old ECG (not available, so skip this step) | **Compare with the old ECG (not available, so skip this step) | ||
**Conclusion? | **Conclusion? | ||
''' | '''[[Sinustachycardia]]] in a patient with a [[WPW|WPW pattern]]''' | ||
{{clr}} | {{clr}} | ||