A comparison of ischemic patients and non-ischemic controls will be done. The plasma level of sST2 will be withdrawn at baseline and 24-48 hours after the intervention in ischemic group. Then a study ischemic group will be divided into three subgroups; subgroup-1: single vessel disease, subgroup-2: two vessels disease and subgroup-3: multivessels disease. On admission, there will be a significant difference between the group of acute/chronic coronary syndrome cases and controls as regard sST2 plasma level or not. Moreover, the differences between the three ischemic subgroups at the baseline ST2 level will be assessed. The plasma sST2 level after PCI and the correlation between the acute change in pot-PCI sST2 level and the severity of ischemia by Modified Gensini Score (MGS) will be evaluated. The final question that will be answered by this study does the rapid impact of PCI on sST2 level will be mainly related to the severity of ischemia rather than left ventricular function or not.
The role of soluble circulating suppression of tumorigenicity 2 biomarker (sST2) in the ischemic heart disease patient is a debatable point. Therefore the aims of this study are to assess the plasma level of sST2 in ischemic heart disease patients versus non-ischemic ones, the acute changes in its level after percutaneous coronary intervention (PCI) and its relation to the severity of ischemia.