Download - Ms. He's Circulatory Disease
Cardiovascular Diseases• Atherosclerosis leading to:
– Coronary Artery Disease– Heart attack– Stroke– Hypertension
• Arrhythmias• Heart Murmurs
Introduction to Atherosclerosishttp://www.youtube.com/watch?v=M0NF2ODfd9Ehttp://www.youtube.com/watch?v=1TAFuOGXem8&feature=fvwrel
Atherosclerosis• Thickening of artery
wall due to buildup of plaque in the wall
• Plaque is mainly made up of fat, cholesterol, blood clotting materials
What is the function of Artery?
Atherosclerosis: Hardening of Artery
What happens when artery loss its elasticity?
• Plaque limits the elasticity of the artery wallWhy is it important for artery to have elastic wall?
• Narrow artery• Higher the arterial
pressure -> causes hypertension
Arteriosclerosis-Related Diseases
• Coronary Artery Disease• Heart Attack
• Stroke
Affected artery that supply blood to heart
Affecrtery that supply blood to brain
Coronary Artery • Artery around the heart• Coronary arteries transport blood from
heart TO heart muscle cellsWhy is it important to circulate blood to heart cells through coronary artery?
Atherosclerosis: Heart Attack
• Rupture of plaque result in blood clot
• Heart attack is the result of blocked blood flow in coronary artery• Lack of oxygen
flow to heart muscle cells
Buildup of Plaque
Blood Clot
Which blood cell is responsible for blood clot?
What will happen to the heart muscle cells?
Heart Attack
• Death of cardiac muscle cells due to lack of oxygen
• Heart may stop pumping
What type blood is transported through coronary artery?
Stroke• “Brain attack”• Lack of oxygen flow to brain• Blocked or bursted arteries that transport
blood to brain
Types of AtherosclerosisAffected Artery Blood flow
Coronary Artery Disease Coronary Artery Reduced
Heart Attack Coronary Artery Blocked
Stroke Artery that transfer blood to brain
Blocked
Hypertension• Prolonged high
blood pressure • Often due to
narrowing of arteries from plaque buildup
• Heart is constantly pumping harder
• Overuse leads to thickening of heart muscles making them less flexible and more inefficient at pumping
Atherosclerosis TreatmentsANGIOPLASTY and STENThttp://www.youtube.com/watch?v=S9AqBd4RExk&feature=related
Electrocardiographs (ECGs)
• The electrical signals of the heart can be measured using a machine called an electrocardiograph (ECG).
Arrhythmia Treatment
• Treatment may include implanting an artificial pacemaker
• Pacemaker controls heart beats using electrical impulses