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HLTC22H3 (110)
Lecture 4

HLTB01 Lecture 4.pdf

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Department
Health Studies
Course
HLTC22H3
Professor
Michelle Silver
Semester
Fall

Description
HLTB01 Lecture 4 October-02-12 3:00 PM Cue Column: Note-TakingArea: • Cardiovascularaka circulatorysystem ○ Carryoxygenand nutrients;removesCO2 and wastes ○ Normalcircumstances,6L of blood;circulate 5L ○ Age-related changes  Heart gets larger □ Functioning gets less efficient as aging  Increased BP due to thickened arteries  Which body systemsdo similarthings? (mightbe asked)  Loses abilityto cool/heat, down/up ○ BP:  Moreblood heartpumps,narrowarteries =highBP  normal 120/80  Systolic: 1st #; Diastolic:2nd #  Hypertension □ Higher than normal BP □ Hard to ID; not much symptoms or can be related to other conditions  Dull headaches, dizzy spells, nosebleeds;only happen when reallysevere stage □ Can only ID by checking BP  Arteriosclerosis □ Narrowand stiffen of arteriesdue to fatty deposits in it □ restrictsblood flow  Atherosclerosis ◊ Mostcommon formof arteriosclerosis ◊ Depositsof plaque in arterywall  Peripheralvascular disease □ Common problem □ Narrowarteriesreduce blood flow  Extremities- usuallylegs } don't get enough blood □ Sign for more widespread accumulationof fat deposits  Heart disease □ Range of diseasesaffecting heart  CHD (coronaryheartdisease) □ Angina pectoris  Needs blood but not enough supply □ Heart attacks  Blood clots; arteryblocked CPR = cardio pulmonary □ <3 failure  Can't pump enough blood resuscitation; 30 pumps,  fluid backs up 2 rests  Pretty much exclusive to older people  Promoteoptimal aging □ Exercise □ Avoid smoking □ Diet □ Social support • Respiratorysystem ○ Transferoxygen fromair to blood ○ ExchangeO2 and CO2 ○ >200 diff types of cold virus ○ Commonof all disordersin all age groups ○ Diseases  Lung cancer □ Leading cause of death (Canada) □ Mostly due to tobacco smoking  Cigarette smokehas >4800 chemicals  69 known to cause cancer (carcinogens) □ Used to be more common among men; now morewomen □ Signs/symptomsoccur in advanced stages  Pneumonia □ Lung inflammation □ Bacterialor virus infection □ Leading cause of death among older adults and younger children □ Aspirationpneumonia  Inhale substancesinto respiratorytract  Chronicobstructive pulmonarydisease □ Difficultybreathing □ Broughtfrom smoking □ Pulmonary= lungs □ Chronicbronchitis  Lining in tubes □ Emphysema  Morecommon with smokers  Ends of air sac graduallydestroyed  TB □ 'consumption' □ Killsapprox. 2M people/year □ Bacterialinfection □ Diseaseof poverty □ Vitamin D deficiency □ co-morbidityHIV/AIDS  Weak immunesystem ○ Promoteoptimal aging HLTB01 Page 1 □ Diseaseof poverty □ Vitamin D deficiency □ co-morbidityHIV/AIDS  Weak immunesystem ○ Promoteoptimal aging  Avoid overcrowding  Exercise  Avoid smoking  Diet • GastrointestinalSystem (GI) ○ Main:small and large }intestines ○ Age relatedchanges  Nutrientabsorptionchanges □ Tends to deviate from normal □ Diff nutritionalrequirements  Moresusceptibleto infection  Less mucous secreted  Liver's proteinsynthesis  Increased riskof gallstones ○ Disease  Periodontaldisease □ Diseaseof structural tissues □ Bacterialinfection  Constipation  Diverticulosis - not enoughfiberand fluids  Cancer  Under nutrition □ Culturalissues (gender roles)  Not knowing how to cook can lead
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