The heart is generally the size of a first it contains 4 chambers
· 2 atria (upper)
· 2 ventricles (lower)
Blood flows from the right atrium to the right ventricle through a value called the tricuspid (3 cusps or flaps) valve. Similarly, the left atrium is divided from the left ventricle by a septum. Blood flows from the left atrium to the left ventricle via the mitral valve. The mitral valve has only 2 flaps.
The other 2 valves our heart process are:
· 1 pulmonary valve: located in between a large vessel known as the Pulmonary artery and function when the right ventricle pumps blood into the lungs through the pulmonary artery.
· Aortic valve: Located in an even larger vessel known as the aorta which allows the blood from the left ventricle to flow To the rest of the body
If there is a valve heart disease, there is likely to be something wrong with one of these 4 valves.
The blood flow:
· Valves act as one way inlets to allow only the one path way of blood flow.
· Blood is only allowed to flow from the right atrium to the right ventricle.
· Which then pumps blood to the lungs.
· Thereafter, the blood is re-oxygenated.
· The blood then enters the left atrium from the lungs
· The blood goes into the left ventricle and get pumped out the rest of the body
All these valves work in an efficient pattern by opening and closing in succession. After the left ventricle has contracted, the aortic valve closes and the mitral valve open to allow blood to flow from the left atrium into the left ventricle. As the left ventricle contract, the mitral valve closes and the aortic valve opens so that the blood flows into aorta.
Heart valve disease
o the valve does not close fully. This causes the blood to flow backward instead of forwards.
· Stenosis (or Contraction)
o the valve is narrowed or not properly formed. This prevents the blood from flowing properly through the chambers. The heart then has to pump ever harder and with more force to push blood through the valve.
Symptom of heart disease
(You can have both regurgitation and stenosis at the same time in one heart valve).
· Shortness of breath
· Especially when exerting or lying down flat
· This happen because blood cannot clear your lungs efficiently and/or there is backflow of blood into the lungs.
· Weakness and dizziness
· Not enough blood being pumped into your body
· Chest discomfort
· Swelling in ankles, feet or even abdomen
o Caused by heart failure, when heart cannot pump out enough blood to meet the demands of the body and there is a backflow
· Weight gain
o Caused by water retention and swelling.
The severity of heart disease experiences does not always correlate with how serious the valve disease is. People may have very severe valve disease and no symptoms and all, and vice versa.
Cause of heart disease
· Develop even before birth
· Most likely the artic or pulmonary valve is affected
· May have deformed cusps or leaflet that has are not attached properly.
· Can also be the wrong size?
· Rheumatic fever
· Untreated bacterial throat infection can sometimes infect and in flames the heart valve.
· The symptoms can only be seen 20 to 30 years later
· The valve mostly affected is the mitral valve.
· Infection of the inner heart lining
· Coronary heart disease
· Cardiomyopathy (heart muscle disease).
· Aortic aneurysm
Dr. Y. L. M Tell me
Star 2 Thursday,
21 January 2016