Class Notes (808,229)
Canada (493,092)
Health Sciences (1,987)
Shauna Burke (266)
Lecture 7

HS1001 Lecture 7.docx

5 Pages
Unlock Document

Western University
Health Sciences
Health Sciences 1001A/B
Shauna Burke

Lecture 7 Cardiovascular Health Cardiovascular Disease - Affects nearly 120,000 Canadians - Heart disease and stroke surpass cancer as leading cause of death o Claim one life every 7 minutes o Most common life-threatening manifestations of CVD o Can occur at any age - Heart attack = number 1 killer of Canadian women o Because women experience symptoms that aren’t traditionally realized as heart attack symptoms  Ex. headache, vomit, back ache - CVD largely due to way of life Risk Factors for Cardiovascular Disease - 2 categories of increased risk of CVD o Major risk factors  Those that can be changed  Tobacco use  High blood pressure  High cholesterol  Physical inactivity  Obesity  Diabetes o Contributing risk factors High Blood Pressure - Hypertension o Risk factor for many forms of CVD o Too much force exerted against arterial wall o Physical activity and changing diet can reduce this o Inflammation  Huge contributor to disease in body  Can affect blood pressure  Diet like sugar and fat can cause inflammation - Causes o Atherosclerosis  Arteries become clogged and narrowed o Scarred and/or hardened arteries o Weakened and enlarged heart - Health Risks o Silent killer  don’t know you have it until get heart attack or stroke  Genetics and environment can contribute o Primary hypertension  Caused by genetics environment, lifestyle o Secondary hypertension  Caused by underlying illness - Prevalence o 20% Canadian adults have hypertension  Only 66% have it controlled o 20% of Canadian adults have prehypertension o Incidence increase with age, oral contraceptive use, First Nations Canadian adults, African and South Asian descent - Treatment o Can’t be cured but can be controlled o Have blood pressure tested once every two years High Cholesterol - Cholesterol = fatty, wax-like substance that circulate through bloodstream - Important component of o Cell membrane o Sex hormone o Vitamin D o Fluid that coat lungs o Protective sheaths around nerves - Excessive amounts clog artery and increase risk of CVD Good vs Bad Cholesterol - Low-density lipoprotein (LDL) o Bad cholesterol o Shuttle cholesterol from liver to organs and tissues - High-density lipoproteins (HDL) o Good cholesterol o Shuttle unused cholesterol back to liver for recycling o If there is more than body can use, put in blood vessels  So want to assess the vessels themselves instead of amount of cholesterol Cholesterol Myths - Fat and cholesterol NOT cause of heart disease - Cholesterol test not good predictor of risk o More accurate predictor – LDL particle number - High cholesterol due to insulin and leptin resistance Major Risk Factors that Can’t be Changed - Heredity o CVD has genetic component which lead to increases in cholesterol levels, blood clotting, and obesity - Aging o Over age of 65 - Being male o Men have higher risk earlier in life - Ethnicity o African Americans have higher risk of hypertension o Hispanics have greater risk of HBP and angina o Asians have lower risk of CVD - Inflammation and C-reactive protein Major forms of Ca
More Less

Related notes for Health Sciences 1001A/B

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.