Value of Duke's treadmill score and other parameters to predict coronary arterial disease

الملخص EN

Duke's treadmill score is a composite index that was designed to provide survival estimates based on results from the exercise test, including ST-segment depression, chest pain, and exercise duration.

Objectives : the objectives of this study were to correlate the angiographic findings of the patients with Duke's score and adding other parameters like risks factors and type of ST deviation to increase it's accuracy.

Setting : Merjan teaching hospital and Shahid Almihrab cardiac centre.

Methods :Across sectional study done on hundred patients whom underwant exercise treadmill test with calculation of Duke's score followed by coronary angiograph that was correlated with Duke's score and other parameter added to it.

Results : By comparing the result of exercise treadmill test and Duke's score with the result of coronary angiography it showed that in the low risk Duke's group, the coronary angiographic results were mainly normal (40%) or single vessel disease (40%) and rarely showed two (10%) or three vessels disease(10%) and no left main stem disease was found.

For the intermediate Duke's risk group the coronary angiographic results distributed on the normal (22.2%), single (30.2%), two (25.4%), and three vessels disease (19%) while it was rarely showed left main stem disease (3.2%).

For high Duke's risk group the coronary angiographic results showed mainly three vessels disease (40.8%) and left main stem disease (37%), while it showed two vessels disease in 18.5% and rarely showed single vessel disease (3.7%) and no normal vessel were shown, The P value for this relation was <0.001.

For intermediate Duke's risk group adding of patient's risk factors and the type of ST deviation were statistically significant in predict coronary lesion with P value 0.001, 0.028 respectively.

Conclusion : Duke's score can predict coronary lesion and adding of patient's risk factors and type of ST deviation can increase it's ability to predict coronary lesion.