Long QT Syndrome other diagnostic studies: Difference between revisions
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==Overview== | ==Overview== | ||
The diagnosis of long QT syndrome can be difficult when abnormalities on [[electrocardiogram]] are borderline or intermittent. In cases where the history and symptoms are suggestive of long QT syndrome, but few or no abnormalities are seen on electrocardiogram, further testing can be done to unmask long QT syndrome with the use of exercise treadmill testing, and [[catecholamine]] provocation testing. | The diagnosis of long QT syndrome can be difficult when abnormalities on [[electrocardiogram]] are borderline or intermittent. In cases where the history and symptoms are suggestive of long QT syndrome, but few or no abnormalities are seen on electrocardiogram, further testing can be done to unmask long QT syndrome with the use of exercise treadmill testing, and [[catecholamine]] provocation testing. | ||
==Non-exercise Catecholamine Stress Testing== | |||
During this type of test, an [[EKG]] is performed while the patient is given an infusion of [[epinephrine]]. This test can unmask what is known as concealed long QT syndrome, which shows a normal [[QT interval]] on EKG at rest. This test will usually show a prolonged QT interval in persons who have a history of fainting spells in response to intense exercise or emotional upset. | |||
==References== | ==References== | ||
Revision as of 15:45, 7 October 2012
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Long QT Syndrome Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Long QT Syndrome other diagnostic studies On the Web |
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American Roentgen Ray Society Images of Long QT Syndrome other diagnostic studies |
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Risk calculators and risk factors for Long QT Syndrome other diagnostic studies |
Overview
The diagnosis of long QT syndrome can be difficult when abnormalities on electrocardiogram are borderline or intermittent. In cases where the history and symptoms are suggestive of long QT syndrome, but few or no abnormalities are seen on electrocardiogram, further testing can be done to unmask long QT syndrome with the use of exercise treadmill testing, and catecholamine provocation testing.
Non-exercise Catecholamine Stress Testing
During this type of test, an EKG is performed while the patient is given an infusion of epinephrine. This test can unmask what is known as concealed long QT syndrome, which shows a normal QT interval on EKG at rest. This test will usually show a prolonged QT interval in persons who have a history of fainting spells in response to intense exercise or emotional upset.