Prognostic value of electrocardiographic stress testing compared to thallium scintigraphy
Language English Country Czech Republic Media print
Document type Comparative Study, Journal Article
PubMed
1344598
Knihovny.cz E-resources
- MeSH
- Angina Pectoris diagnosis diagnostic imaging physiopathology MeSH
- Adult MeSH
- Electrocardiography * MeSH
- Myocardial Ischemia diagnosis diagnostic imaging physiopathology MeSH
- Middle Aged MeSH
- Humans MeSH
- Prognosis MeSH
- Thallium Radioisotopes * MeSH
- Aged, 80 and over MeSH
- Aged MeSH
- Tomography, Emission-Computed * MeSH
- Exercise Test * MeSH
- Check Tag
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Aged, 80 and over MeSH
- Aged MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Comparative Study MeSH
- Names of Substances
- Thallium Radioisotopes * MeSH
The highly sensitive and specific thallium scintigraphy is compared to loading electrocardiography with regard to the two crucial parameters: loaded angina pectoris (AP) and horizontal or descendant depression of ST segment of 1.5 mm and deeper (ST). Effectiveness of loading ecg test was determined quantitatively in terms of sensitivity, specificity, prognostic value and test accuracy. Those criteria of positivity of the loading test showed that sensitivity was higher for AP than for ST (73% and 63%, resp.), but specificity was higher for ST (100%) than for AP (79%). The result of thallium test was estimated according to AP occurrence with 80% probability for positive prognosis and 70% probability for negative prognosis; with ST, probability of positive prognosis was 100% and that of negative prognosis was 69%. Test accuracy is 75% for AP and 79% for ST. The 100% probability of positivity of thallium scintigraphy in ST depressions of 1.5 mm and deeper discredits indication of this method in this cases. In the absence of ST depressions, the origin of typical pain during the loading ECG enhances probability of positivity of thallium scintigraphy more than twofold (53 vs. 21%).