Clinical Research Directory

Thromboelastography With Platelet Mapping to Guide Antiplatelet Therapy After Lower Extremity Revascularization

The goal of this clinical trial is to learn if a blood clotting test called thromboelastography with platelet mapping (TEG-PM) can guide blood-thinning medication decisions in adults more than 60 years and older with peripheral artery disease (PAD) who have undergone infrainguinal endovascular surgery. The main questions it aims to answer are: * Does TEG-PM-guided antiplatelet therapy lower the rate of thrombosis or clinically significant stenosis of the treated artery within 12 months compared with a historical standard-of-care cohort? * How does TEG-PM-guided therapy affect major amputation, amputation-free survival, mortality, and bleeding? Participants will: * Have blood samples taken before the procedure and at 1, 3, and 6 months afterward * Have antiplatelet medications (aspirin, clopidogrel, and/or ticagrelor) escalated or de-escalated based on TEG-PM results through 6 months * Have one additional blood test to check clopidogrel response if taking clopidogrel * Be followed for clinical outcomes through 12 months

Bleeding Management İn Open Heart Surgery

This study aims to develop an algorithm that can guide targeted bleeding management through thromboelastography (TEG) viscoelastic testing performed on blood samples from patients undergoing open heart surgery. The goal is to develop an algorithm that supports targeted bleeding management based on TEG parameters. The study is prospective, in vitro, and non-invasive. The material will consist of residual blood samples from open heart surgery patients. Analyses will be performed using TEG parameters (R time, K time, MA, LY30). Patients will be randomized using a closed-envelope method and divided into two groups: anesthesiologist standard clinical observation-control (Group K) and anesthesiologist standard clinical observation and TEG analysis (Group T). The sample size is 70 patients per group. From an ethical standpoint, this study uses anonymous data without additional blood collection and ensures patient safety.