Once you have made the decision to have heart valve replacement surgery, you, along with your surgeon, will need to decide what type of replacement valve is best for you. There are several types of ...

Want to preserve the planetary parade or capture the Lynx constellation? The best lenses for astrophotography can help you take beautiful, breathtaking images of the night sky. If you're stepping ...

As the heart muscle contracts, it propels the blood out into the vascular system. The heart’s chambers and valves are arranged to direct the flow of the blood as the heart beats. The heart has two ...