This document summarizes various tests and procedures used in diagnosing and treating cardiovascular conditions. It discusses cardiac enzyme blood tests that can detect heart attack by monitoring enzyme levels. It also describes cardiac CT scans used to detect issues like coronary artery disease. Additionally, it outlines thrombolytic therapy which dissolves blood clots using drugs to treat heart attacks, strokes, and pulmonary embolisms within 12 hours. The document provides details on the uses, procedures, and contraindications for these diagnostic and treatment options.