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Example 25: Difference between revisions
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(New page: thumb| The ECG * Following the 7+2 steps: **Rhythm ***'''The ECG shows a regular fast rhythm. P waves are not easily discernible but might well be located just afte...) |
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'''A regular small-QRS tachycardia at about 300bpm with normal looking QRS complexes is most likely an [[Atrial flutter]] with 1:1 conduction over the AV node. Carotid sinus massage or adenosine would slow down AV conduction and would uncover the typical 'saw-tooth' P-waves at 300bpm. | '''A regular small-QRS tachycardia at about 300bpm with normal looking QRS complexes is most likely an [[Atrial_Flutter|Atrial flutter]] with 1:1 conduction over the AV node. Carotid sinus massage or adenosine would slow down AV conduction and would uncover the typical 'saw-tooth' P-waves at 300bpm. | ||
It might be that such a fast ventricular rhythm causes myocardial ischaemia without coronary artery disease. Most likely this is a young individual, older individuals often do not have AV node-conduction abilities at these high rates and they would show for example 1:2 or 1:3 AV-block whith the atrial frequency still at 300bpm but with the ventricles activated at 150 or 100bpm.''' | It might be that such a fast ventricular rhythm causes myocardial ischaemia without coronary artery disease. Most likely this is a young individual, older individuals often do not have AV node-conduction abilities at these high rates and they would show for example 1:2 or 1:3 AV-block whith the atrial frequency still at 300bpm but with the ventricles activated at 150 or 100bpm.''' | ||