Chronic Disease and Cancer Flashcards
what is the purpose of the DASH diet? what is the DASH diet?
- reducing high blood pressure
- limit sodium
- consume high amounts of fruit/veg
what are 5 major forms of cardiovascular disease?
- hypertension
- atherosclerosis
- heart disease and heart attacks
- stroke
- congestive heart failure
what is hypertension?
abnormally high blood pressure
what is systolic blood pressure?
pressure when blood exits heart during ventricular contraction
what is diastolic blood pressure?
pressure during relaxation and (blood) filling ventricles
what are the systolic and diastolic measurements for low, medium, and high risk of hypertension?
- low risk: 120/80 or below
- medium risk: 121-139/80-89
- high risk: 140+/90+
what are 2 factors that influence blood pressure?
- cardiac output (L/min)
2. vascular resistance
what is cardiac output?
amount of blood pumped from the heart
what is vascular resistance?
- sum of resistance to blood flow provided by all systemic blood vessels
- highly hereditary
what is atherosclerosis?
narrowing of arteries by deposits of fat, cholesterol, and other substances
what is plaque?
deposit of fatty substances on inner wall of arteries
what is the difference between a heart attack and a stroke?
- heart attack: blockage of a coronary artery
- stroke: blockage of a cerebral artery
what is coronary heart disease?
heart disease caused by hardening of arteries that supply oxygen to heart muscle
what happens when someone has a heart attack?
- damage/death to heart muscle from failure to deliver enough blood to the body
- caused by lack of oxygen
what are 3 signs of a heart attack?
- chest discomfort
- discomfort in areas of upper body
- shortness of breath
what are 2 signs of cardiac arrest?
- sudden loss of responsiveness
2. no normal breathing
what do you do if someone goes into cardiac arrest?
- CPR
- automated external defibrillator
what is angia pectoris?
- chest pain that occurs when cardiac tissue doesn’t receive enough blood
- symptoms mimic heart attack
what is arrhythmia?
- irregularity in form or rhythm of heartbeat
- caused by disruption to electrical impulses that control heartbeat
what is the difference between ischemic and hemorrhagic stroke?
- ischemic stroke: caused by blood clot
- hemorrhagic stroke: caused by ruptured blood vessel
what is the difference between a subarachnoid hemorrhage and a interracial hemorrhage?
subrachnoid hemorrhage
- bleed into space between brain and skull
- develops from aneurysms
intracerebral hemorrhage
- bleed from blood vessel inside brain
- caused by high BP and damage to arteries
what is the difference between a embolic stroke and a thrombotic stroke?
embolic stroke
- caused by emboli, blood clots that travel to brain blood vessels
- 25% related to atrial fibrilation
thrombotic stroke
- caused by thrombi, blood clots that form where an artery has been narrowed by atherosclerosis
- often develops when thrombus breaks away and causes and blockage
what is congestive heart failure?
- condition resulting from heart’s inability to pump out all blood received during diastole
- results in accumulation of fluid in body
what are 3 risk factors when smoking?
- damages lining of arteries
- reduces HDL and raises LDL
- raises blood pressure and heart rate
what is high blood pressure? what happens when you develop high blood pressure?
- too much force/pressure on artery walls
- strains, weakens, enlarges heart
- scars and hardens arteries
- increases risk of heart attack, stroke, atherosclerosis, and kidney failure
what is cholesterol? what is important for? where can it be obtained?
- fatty, wax-like substance
- important component of cell membranes, sex hormones, vitamin D, and protective nerve sheaths
- obtained from food or made by liver
how is cholesterol carried in the blood?
protein-fat packages called lipoproteins
what are low-density lipoproteins?
- “bad cholesterol”
- transports cholesterol to organs and tissues
what are high-density lipoproteins?
- transports cholesterol out of arteries and back to liver
- helps protect against heart disease by removing cholesterol from blood vessels