Coronary heart disease electrocardiogram: Difference between revisions
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Revision as of 13:56, 23 October 2012
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Coronary heart disease Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Coronary heart disease electrocardiogram On the Web |
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American Roentgen Ray Society Images of Coronary heart disease electrocardiogram |
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Risk calculators and risk factors for Coronary heart disease electrocardiogram |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Stress testing is used for risk stratification and diagnosis of coronary artery disease.
Electrocardiogram
Exercise EKG is preferred initial test unless the patients have uninterpretable EKG not in a condition to exercise. Few uninterpretable EKG conditions are
- WPW syndrome
- > 1 mm of ST depression at rest
- Left bundle branch block
- Ventricular pacing
- Resting abnormalities of ST segment and T waves
In patients with left bundle branch block the following are recommendations.
| Class I |
| Class III (No Benefit) |
| Class IIa/b |
Prognostic Markers: Exercise EKG
- In ECG recording
- Maximum ST elevation
- Number of leads showing changes
- Duration for onset of ST segment changes
- Duration for ST segment change recovery
- ST/HR indices
- Occurrence exercise induced ventricular arrhythmia
- Hemodynamic markers
- Maximum heart rate, blood pressure, RPP
- Exertional hypotension
- Chronotropic incompetence
- Heart rate recovery
- Exercise capacity
- Duration
- Workload
- Ischemia
- Angina
- Time of onset