HomeMy WebLinkAboutTimes-Advocate, 1985-02-13, Page 16oxygenated blood to every
Cell 1n the body and carry
off wastes
The enure body depends
upon this system An
undeistanding of the
diseases and abnormalities
which afleci this proper
lona/0111ng rs .mporlaat'
Page 4A
Times -Advocate, February 13, 1985
SOMEDAY 'NUMMI' MAY
Heart
-Disease
Stroke are
Canada's
No. 1
Health
Problem.
Know the Facts 0.
Heart and
Circulatory System
•
The heart is a lour -chambered double pump that beats
100,000 times a day while moving 4,300 gallons of oxygen -rich
blood through the circulatory system to the entire body.
As the heart beats, contractions of the thick muscle wall
(myocardium) pump blood from the hears through 60,000
miles of blood vessels. The heart rests only a fraction of a
second between beats. The normal adult circulatory system
contains about 8 pints of blood, which is recirculated contin-
uously through the body.
The heart has two pumping stations. One pump (the right
heart) receives blood which has just come from the body after
delivering nutrients and oxygen to the body tissues. It pumps
this dark, bluish red bood to the lungs. where the blood gets
rid of a waste gas (carbon dioxide) and picks up a fresh supply
of oxygen. which turns it bright red again. The second pump
(the left heart) receives the oxygenated blood fromthe lungs
and pumps it out through the large trunk -artery (aorta) to be
distributed by smaller arteries to all parts of the body and
eventual return to the right heart.
arteries
morrows
venules
•.----w reins
The Cncul`tOry system .s a
complex arrangement of
vessels - arteres and
arterioles Ismail arteltest
capillaries (minute blood
vessels) and veins and
venules *smaII veins) They
branch out iron one to
another to dtshlbute
Cardiovascular System
The heart and blood vessels, because they are so inter-
dependent. are referred to as the cardiovascular system.
Diseases affecting this system can be inherited. can result from
living habits. or can be caused by infections or injuries during
embryonic life or at any time following birth.
Some diseases primarily affect the blood vessels; others
only the heart itself. Among the major disetses are those which
cause the blood vessels to narrow and deteriorate with
resultant damage 10 the heart, brain. kidneys, or other parts of
the body.
RIGHT HEAI1t 1 , lEf T HEART •
5e,rn,ra hlnnd hu,n
the 1.44 anti p., .•u+1
nnn,.gh env poli..,, ..
Ntrry lu.lhr hinny, A...,
a pass °p lora. ..
R,,,..et o.ygen cull
hluud 11e lungs
and pumps ,.
n:oa,g. 15. .114 to
1... hoop
NEED in
Atherosclerosis, as an underlying cause, contributes
directly to more than 66,000 deaths annually from heart attack
and stroke.
Early identification and modification of the risk factors -
particutarly high blood pressure and elevated blood choles-
terol - could help prevent or retard the development of
atherosclerosis and the heart attack and stroke which may
result.
'isle Deterioration of Arteries
The deterioration of a normal artery
(top) is seen as atherosclerosis
develops and begins depositing fatty
substances and roughening the
channel lining (middle) until a clot
forms (bottom) and plugs the artery
to deprive the heart muscle of
vital blood which results in
heart attack.
Cardiovascular Diseases Heart Attack
Heart and -blood vessel disease is the leading cause of
death and disability in Canada. It afflicts more than 2,600.000
men, women, and children in Canada and kills over 80,000
annually - more than all other.iauses of death combined.
Most of this damage is caused by (our inajoi iypes of heart
disease - atherosclerosis, hypertension, rheumatic heart
disease and congenital defect's. These diseases may produce
congestive heart failure, heart attack and stroke.
Artherosclerosis
Atherosclerosis. rhe most common form of arterioscle-
rosis. is generally known as "hardening of the arteries". It is a
slow progressive process by which the inner linings of the
artery become thickened and roughened by deposits of fat,
labrin, cellular debris and calcium. These deposits (orm a
rough. thick surface inside the blood vessels, and interfere
with both the smooth flow of blood and the amount of blood
carried through the artery.
As the inner walls become heavy and thick, they lose their
ability to expand and contract. The blood rnovt I with difficulty
through the scarred, roughened walls and this makes it easier
for a dot to form. blocking the channeF and depriving the
heart, brain.. or other organs of blood. If such a blockage
occurs in one of the heart's own arteries, the result is coronary
thrombosis. one lorm of heart attack. When it occurs in the
brain the result is a cerebral thrombosis. one form of stroke.
Heart attacks or strokes may occur suddenly. but the
condition of atherosclerosis usually has been budding up for
years, corroding the inner lining of the arteries.
Usually, when we speak of n heart attack, we mean a
sudden blocking of one of the arteries that supply the heart
muscle with blood.
Although the heart attack is sudden, it is the result of
slowly -developing atherosclerosis of the coronary arteries, in
which the passageway through the arteries becomes -rough-
ened and narrowed by fatty deposits.
When this happens, a blood floe *thrombus) may form in
the narrowed artery and block the Ilow of blood to the part of
the heart muscle supplied by the artery. The result is heart
attack, which physicians may calf coronary thrombosis. coro-
nary occlusion or myocardial infarction.
In myocardial infarction, the heart muscle supplied by the
blocked artery does nut gel enough oxygen and other
nutrients and begins to die.
To enable the damaged heart muscle to heal, small blood
vessels open up to detour more blood through the damaged
area. This is called collateral circulation. As healing progresses.
part of the injured muscle may be replaced by scar tissue.
Collateral circulation may also commence long before a
heart attack occurs, to take on some of the functions of
coronary blood vessels narrowed by atherosclerosis
In other types of heart attack, a wandering blood clot may
wedge at a narrow point and block the blood flow
Narrow but unclogged coronary arteries may not be able
to delivet the additional oxygen required in emotional excite-
ment or severe physical exertion, and this may lead ro a serious
or even fatal disruption of he4rt rhythm.
When the heart fails to get enough blood to meet its
oxygen needs, a warning pain often dedelops. This chest pilin.
angina pectoris. is indicated by a sensation of tightening in the
them and pressure os pain behind the breastbone. sometimes
radiating to the shoulder. neck, arm, hand or back.
Stroke
Stroke occurs when there Is intederence with the blood
supply to the brain. One of the commonest causes is the
blocking of one of the brain's arteries by a clot inside the
artery. This condition is called cerebral thrombosis. A clot is
not likely to occur in a healthy artery. However. when arteries
are damaged by atherosclerosis. clots are apt to form around
the rough deposit on the artery wall.
Sometimes a wandering blood clot becomes wedged In
one of the cerebral arteries. This is called a cerebral embolism.
When any clot plugs a cerebral"artery, doctors cab the
condition cerebrovascular occlusion.
Stroke also occurs when an artery in the brain bursts. This •
is called a cerebral haemorrhage. Cells nourished by the artery
are deprived of blood and cannot function. The accumulation
of blood from the burst artery forms a clot. By displacing brain
tissue, it may interfere with brain function and cause mild or
severe symptoms. A cerebral haemorrhage is more likely to
occur when the patient suffers from a combination of ather-
osclerosis and high blood pressure.
Haemorrhage of an artery in the brain may also be caused
by a head injury or a burst aneurysm- Aneurysms are blood-
filled pouches that balloon out from a weak spot in the artery
wall and are often associated with high blood pressure. When
one bursts in the brain, the result is a stroke.
When a stroke occurs, the nerve cells in that area cannot
function. These cells control sensation and most of our bodily
movements. When nerve cells cannot function, the part of the
body controlled by these cells cannot lunction either.
The result may be difficulty in speaking, Inability to walk or
loss of memory. The effect may be slight or severe, temporary
or permanent, depending on which brain .cells have been
damaged. how widespread the damage is. how effectively the
body can repair its system of blood supply, -or -how rapidly
other areas of brain tissue can lake over the walk of the
damaged cells.
Brain cells must have a continuous and ample supply of
oxygen -rich blood. If deprived of blood for more than a few
minutes. they will die. Presenbnn of stroke through -modifi-
cation of risk factors. therefore. is particularly important since
injured brain cells. unlike those of other organs. cannot
regenerate.
•
The 3 Billion Dollar Problem:
-Cardiovascular disease is
estimated to cost the Canadian
economy over $3 billion
annually
Lail
wages awd
$1,11111~foo
MILLION
The •
Heart Fund
IMAM
A national campaign - the Canadian
Heart Fond.
1 To rare urgently -needed funds to fight
heart and blood vessel disease - our No. 1
enemy
2 Because the results to date justify further
morkm
SIAM WS
MILLION MILLION
Total $3,245,000,000
5mrtr 44,..E Irorwnv A.p..w al ow Iondny d 4.40 Reran
! D I.aw 40 O Moo at H or.o•nr. Queen • Un.eo.ry
eaired.. chows ^ Co,..rww, erre ode. b Nara
Canadian
Achievements
Canadian scientists have
played an important role in
pioneering:
•C.ett el
emeatellee
tn-w
MILLION
I. Pacemakers to control, heart rhythm.
2. Artery transplants to improve blood
supply to the heart muscle.
3. Human heart valve replacement.
4. Coronary Core Units which can reduce
hospital mortality rates from heart
attacks by 30°..
5. Hypothermia - o blood -cooling techni•
que which hos been an invaluable
adjunct to modern heart surgery.
6. Surgery to correct one of the
defects resulting in "blue babies".
Who can put a volue on the tremendous
savings in lives alone. which hove
resulted from these developments/
WHOM
Heart Month. February.
WHIM
In all len provinces and both semitones
MOM
By a volunteer canvass of blasnesses and
indivduah. by mail and by special events
conducted by supporting poonps.
WflOr
Thousands of Canadian who have vdun•
leered their time so help the Heart fund help
you heap
Taos
Pamphlets. posters, newspaper. radio and
tetesssion musette/5. canvassers' km and
many oche. miseries are available through
the ProMncial icI.danom. listed on page 12
THEME
"SOASDAY YOUR HART MAY P410 IFS AS
MACH AS WI MED YOU'
Achievements
Elsewhere
Scientists in other parts of the world
Have also made outstanding contribu-
tions, such as:
) . Heart and valve transplants
2. Artificial heart-lung machines. which
made open-heart surgery possible.
3. Rheumatic heart disease prevention.
4. Cordic catheterization. which added o
new dimension to diagnosis.
5. The development of artificial heart
valves orad artery grafts.
6. New techniques for treating stroke
and reducing disability.
These and many other life-saving ad-
vances ore the result of research.
The Risk Factors
of Heart Attack and Stroke
These charts show the extent to which particular risk factors increased
the risk of heart attack and stroke in the male population aged 30.62 of Framingham,
Mass. For each disease, columns below the black horizontal line indicate lower
than average risk; columns above the line, higher than average risk. .
Blood Pressure
• man nho.e hh..nt pt.. n .ron.r
nhe moment the hoar r,,.,vap. ,..,,,, 150
or
an ono i.rne,
twa.M,u. 4. and nearly 1. i, Ir••t.,hr,,.4
o/ .anile M a man 015,1,1•11.11.
Mavvl p.rnurr,mt4r 17(1
Average Rid
a• 40
alsz
1
Cigarette Smoking
A nun who undies more Ihan
• park of O'Ste10s a day hat
nearly snore the rn& 04
Man snack and nearly
hw times the ..M or node
at a non.s.noke.
121
IO(
Average Obi
ya
NON! Iq,I
0.144‘
111
tae
Mor.
than
1 p..1
a
i
E
r
•
■ slra.t 6,12,4
119
Cholesterol
A n.40 MO, • h.00.lhole..root
ens 01 250 nr •Dote 1J.
,Ivan Vm
,hrre nem.. the int o1
bean Ann\ andia...40 of • a..n
A ah , hnle..e.o1 beh.n 194
•
Average Rid
q0 - 69
Il
Age
A nun on his SO% has 40w holes
rhe.elle d• nun on his 1101
5,1% 1,90511N MIN 46(15114. 6144. W0511%
10 19 (1 5x5 •0 W (1 kg, 50 59 yl AR%
Air al twin
104
144
165
The Danger of
Heart Attack & Stroke
Increases with the
Number of Risk
Factors Present
Ir.ample 46 roar old mile,
Avenge MA
77
r
120
ro
2%
200
`00
fie es'
1�
die
Canadians can reduce the cost. of Heart
Disease and Stroke. (It is over 3 billion dollars
annually in lost wages and medical care.)
We can reduce our risk, by keeping our weight down
and controlling high blood pressure (have it checked).
Exercise re:ularl ► • our d:• _.,_:.R.�_..-•=< -
onto ing. y e s ou • also know the symptoms of
Heart Attack and Stroke - and what to do if they occur.
Support the Heart Fund.
Your Heart Fund donation fights Heart Disease.
(88% goes\o Research and Education.)
... Save your life and those you love.
A
00
0
r
Heart Attack Symptoms
• Prolonged heovy pressure or squeezing pain in the centre of chest.
• behind the breastbone.
• Pain may spread to the shoulder, orm, neck or jaw.
• Pain or discomfort is often accompanied by sweating, Nausea,
vomiting, or shortness of breath may also occur.
• Symptoms may subside and then return
Stroke symptoms
• Sudden. temporary weakness or numbness of face. orm or leg.
• temporary loss of ,speech or trouble in speaking or understanding
speech.
• Temporary dimness or loss of vision. particularly in one eye.
• Episodes of double vision.
• Unexplained dizziness, headaches. etc. in conjunction with other
symptoms. .
140141 flare's,. clarrn . .gonanes
and s.d
.h.,4ue
ol
and
Mood pressure
Ot..o\y IA.Mn.th.,xe.hnott Penn lnlar< non.
if Symptoms Occur
A('T IMMEDIATELY
• Get to a hospital emergency rooro at once, if your doctor is not
immediately available.
• Keep a list of emergency phone numbers handy. near the telephone.
• The decision to call for help is too important to leave to the patient
alone.lt is also the responsibility of the patient's family. friends and
associates.
• Half of all heart attack deaths occur before the victim gets to the
hospital.
This Community Minded Message is Made Possible Through the Generous
1
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137 Thames Rd. E.
235-1516 ,INS
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143 Main St. N., 235-0410
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