Mitral valve stenosis can be treated using percutaneous (keyhole), minimally invasive or standard surgery. Keyhole techniques, where a balloon is inflated inside the valve via a wire in the groin (balloon valvotomy), are the first line of treatment if the mitral valve is not heavily calcified. This can be repeated as needed over several years.
You can only mount a tire of equivalent load or higher load than indicated for your vehicle. The higher the tire's load index number, the greater its load carrying capacity. Typically, the load indexes of the tires used on passenger cars and light trucks range from 70 to 130. See full table
Additionally, while a tire's maximum load is the most weight the tire is designed to carry, its load carrying capacity at lower inflation pressures is proportional to how much inflation pressure is used.