Whether an [[ischemic stroke]] is due to a noncardiogenic or cardiogenic source, the mechanism of causing a [[stroke]] is the same. Both sources are involved with the development of thrombi or emboli that move from their original source to the brain blocking blood flow in the process. Known as Virchow’s triad, venous stasis, vascular injury, and [[hypercoagulability]] are major components in the development of [[thrombi]].