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Diagnostic Testing: Difference between revisions
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The QT interval is prolonged in congenital long QT syndrome, but QT prolongation can also occur be acquired as results of: | The QT interval is prolonged in congenital long QT syndrome, but QT prolongation can also occur be acquired as results of: | ||
*Medication (anti-arrhythmics, tricyclic antidepressants, phenothiazedes, for a complete list see | *Medication (anti-arrhythmics, tricyclic antidepressants, phenothiazedes, for a complete list see [http://en.ecgpedia.org/wiki/Torsades Torsades]); | ||
*Electrolyte imbalances; | *Electrolyte imbalances; | ||
*Ischemia. | *Ischemia. | ||
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Final conclusions should consist of one sentence, which sums up all important aspects of the ECG. It is not necessary to mention all 7 aspects, although one has to look at all of them to find the right conclusion! | Final conclusions should consist of one sentence, which sums up all important aspects of the ECG. It is not necessary to mention all 7 aspects, although one has to look at all of them to find the right conclusion! | ||
The normal characteristics of an ECG are shown below (tTable 1 and Figure 1). For more elaborate information on the ECG, please visit ecgpedia.org. | The normal characteristics of an ECG are shown below (tTable 1 and Figure 1). For more elaborate information on the ECG, please visit [http://en.ecgpedia.org Echopedia.org]. | ||
'''Characteristics of a normal ECG''' | '''Characteristics of a normal ECG''' | ||
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With TEE a smaller ultrasound probe is placed on a gastroscopic device for introduction in the oesophagus behind the heart. Besides overcoming structural problems, in general TEE produces much higher resolution images of posterior cardiac structures. With TEE left atrial thrombi, small mitral valve vegetations, and thoracic aortic dissection can be diagnosed a high degree of accuracy. The downside of the techniques is the invasiveness of the procedure; the introduction of a probe into the oesophagus is very often experienced as rather uncomfortable by patients. | With TEE a smaller ultrasound probe is placed on a gastroscopic device for introduction in the oesophagus behind the heart. Besides overcoming structural problems, in general TEE produces much higher resolution images of posterior cardiac structures. With TEE left atrial thrombi, small mitral valve vegetations, and thoracic aortic dissection can be diagnosed a high degree of accuracy. The downside of the techniques is the invasiveness of the procedure; the introduction of a probe into the oesophagus is very often experienced as rather uncomfortable by patients. | ||
For more information on echocardiography, please visit [http://en.ecgpedia.org Echopedia.org] | For more information on echocardiography, please visit [http://en.ecgpedia.org Echopedia.org]. | ||
==Cardiac stress test== | ==Cardiac stress test== | ||