The three hour test you need to fast for 12-14 hours prior because that test is fasting the lab needs a base fasting glucose to compare the rest of the blood after you drink the glucola. With that test you should still have nothing in between the blood draws, even though the taste is very bad.
Because valvular heart disease can cause the heart to work harder, enlarge, and ultimately lead to congestive heart failure, symptoms like shortness of breath, fatigue, fainting, chest pain, and ankle swelling may appear as the disease progresses.
There are several types of valve disease: Valvular stenosis. This occurs when a valve opening is smaller than normal due to stiff or fused leaflets. The narrowed opening may make the heart work very hard to pump blood through it. This can lead to heart failure and other symptoms (see below).