CVA from the neurological branch can be cross linked with CHF from the cardiovascular branch. In CHF, there is a back of blood sometimes in both the periphery and lungs. With all this congestion, the body and it's vital organs often do not get enough perfusion and the heart has to continue to work harder and harder. This can lead to arrhythmias such as atrial fibrillation, which is one of the leading causes of stroke. Atrial fibrillation usually includes blood pooling in the atria and not being pumped properly due to the quivering of the atria. With the blood standing in the atria, it can create clots. Once the atrium does get a good contraction, it can launch the clots with it, often times resulting in an ischemic CVA.