Switching the hypothesis and conclusion of a conditional statement. For example, the converse of If it is raining then the grass is wet is If the grass is wet then it is raining.. Note: As in the example, a proposition may be true but have a false converse. See also.
In many instances, clogged arteries do not cause any symptoms until a major event, such as a heart attack or stroke, occurs. At other times, especially when the the artery is blocked by 70% or more, the buildup of arterial plaque may cause symptoms that include: 1  Chest pain. 2  Shortness of breath. 3  Heart palpitations.4  Weakness or dizziness. 5  Nausea.6  Sweating.t other times, especially when the the artery is blocked by 70% or more, the buildup of arterial plaque may cause symptoms that include: 1  Chest pain. 2  Shortness of breath. 3  Heart palpitations. 4  Weakness or dizziness.
Symptoms of a Leaky Heart Valve. Frequently, a leaky heart valve causes no symptoms. Many healthy people have one or more valves that are slightly leaky. If the heart valve leak is severe, it may impair the forward flow of blood. This can cause symptoms of congestive heart failure, which include: 1  Shortness of breath, especially with exertion or when lying flat. 2  Leg swelling or fluid retention elsewhere in the body.