I cannot figure out how they did not know that her heart valves
were bad. They could have done open heart
surgery, bypass and fixed the valves in one operation. Was she short of breath before this all happened? When heart valves are bad, a person becomes short of breath. Climbing stairs is hard, energy level drops, easily tired. Chest pains are usually caused by plugged arteries. It does happened when the artery tears during a stent placement. Sometimes the artery is weak.