cardiovascular system

• Cardiovascular diseases


  Diseases of the heart and blood vessels
• Coronary heart disease


  1. Layers of fatty material build up inside the coronary arteries

  2. Coronary arteries narrow

  3. Reduces blood flow and oxygen to the heart muscle

  4. Can result in a heart attack
• Statins


  • Effective at reducing the risk of coronary heart disease
  • Can cause unwanted side effects like liver problems
• Stent insertion


  1. Stent is a tube inserted into the coronary artery to keep it open

  2. Allows normal blood flow but does not treat underlying causes
• Heart valve issues


  Valves do not fully open or are leaky, causing the heart to work harder
• Biological heart valves


  From animals, do not last as long and may need replacement, but no need for anti-clotting drugs
• Heart failure


  Heart cannot pump enough blood around the body
• Heart transplant


  Donated heart or heart and lungs, but limited availability and risk of rejection
• Artificial heart


  Temporary solution, increases risk of blood clotting, not a long-term treatment for heart failure