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Lecture 9

Lecture 9 Cardiovascular Disease and Diabetes.docx

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Health Sciences
Brent Faught

Cardiovascular Disease and Diabetes CVD: Some good news - Rates have decreased (32% from 47% in 1979) –Diagnosed - Improvements in: - Diagnosis - Emergency and medical care - Drugs - Public awareness - Prevention Imaging Diagnostic tests **Largest artery in the body: Aortic - Oxygenated blood (red) - Depleting / Deoxygenated blood (Blue) (veins) - Brachial Artery – Pulse - Radial Artery – Bypass surgery - Great Saphenous vein Aorta Artery –Pulmonary artery carries deoxygenated blood as well **** Arterials Capillaries – Contains oxygen and carbon dioxide Venuals Veins Vena Cava – Superior (above heart)…Inferior (Below heart) Heart is made of four parts: Right side- atria and ventricle (deoxygenated blood from superior, into right atrium (tricuspid valve), to right ventricle to pulmonary semi-lunar valve, out pulmonary artery) (oxygenated blood, left atrium , mitral valve, left ventricle exits the aorta (aortic semi lunar valve) Left side – “ Why do we breathe? – Desire to get rid of CO2 in blood Space between right and left ventricle – Septum –undeveloped at child birth (blue baby) 6 Liters of blood in body Types of CVD: Atherosclerosis: Plaque developing on vessels, Coronary artery disease Arteriosclerosis: Hardening of the arteries, loose elasticity, can be result of plaque development Coronary Heart Disease: Heart attack=Myocardium infarction (MI) most often happens on left ventricle, heart deprived of oxygen and nutrients, go into state of estemia (heart works without presence of oxygen) angina pectoris…what helps? Nitro glycerin dilates vessels in body and decreases blood flow to the heart which puts less demand on the heart to work in an esteemic environment Stroke: Brain attack, TIA attack on the brain depriving the brain of oxygen and nutrients, often go unnoticed (minor stroke, precursor to full blown stroke) Hypertension: High blood pressure, measure from brachial artery, two measurements systolic (top number) and diastolic (bottom number) when heart is at rest. Two types…essential- 90% of people with high blood pressure no cause, secondary- 10% link it to a cause such as obese, tumor Arrhythmia: Irregular heartbeats such as tachycardia or brachicardia Congestive Heart Failure: overworked heart Congenital heart disease: At birth (pre natal factors) every 1 in 125 Rheumatic heart disease: linked to streptococcal infection, attacks the infants heart Symptoms of Stroke: Left
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