CIRCULATORY SYSTEM
Made up of the heart and a network of blood vessels.
Work constantly to keep all parts of the body supp...
COMPOSITION OF BLOOD
Volume of blood
5 – 6 litres (M)
4 – 5 litres (F)
SHOCK
Insufficient blood supply to the body’s vital organs
Causes
Heart fails to work
Blood vessels dilates, reducing bloo...
SHOCK
Recognition
A rapid pulse
Pale, grey-blue skin
Sweating & cold and
clammy skin
Weakness & giddiness
Nausea, possibly...
SHOCK
Body’s reaction to blood loss
Approx.
Volume
Effect on the body
0.5 litre Little or no effect.
2 litres Quick pulse,...
TREATMENT FOR SHOCK
Lay casualty down on blanket and keep his head low.
Reassure the casualty.
Raise and support his legs....
TREATMENT FOR SHOCK
Protect casualty from cold (DO NOT warm casualty
with
hot water bottle or any direct source of heat).
...
FAINTING
Temporary loss of normal blood supply to the brain
Causes
Standing still for a long time.
Sudden change of positi...
FAINTING
Recognition
Giddiness
Blurred vision
Weakness
“Hot and Cold” feeling
Yawning
Slow, weak pulse
Pale, cold,
clammy ...
TREATMENT FOR FAINTING
Lay casualty down with legs raised, head and body on
the ground.
Loosen tight clothing.
Check for i...
TREATMENT FOR FAINTING
After recovery
Let the casualty rest for a few minutes before
moving.
Make sure the casualty has pl...
TREATMENT FOR FAINTING
If casualty does not regain consciousness quickly,
perform ABC check and be ready to resuscitate if...
DISORDERS OF THE HEART –
HEART ATTACK
Occurs when blood supply to a part of the heart is
interrupted.
Causes
Central chest...
DISORDERS OF THE HEART –
HEART ATTACK
Causes
Sudden faintness or giddiness
“Ashen” skin and cyanosis at the lips
Rapid, we...
DISORDERS OF THE HEART –
HEART ATTACK
Treatment
Help casualty to a half sitting position, with the
casualty’s head & shoul...
DISORDERS OF THE HEART –
CARDIAC ARREST
Any sudden stoppage of the heart
Causes
Heart attack
Severe blood loss
Suffocation...
DISORDERS OF THE HEART –
CARDIAC ARREST
Recognition
Absence of pulse
Absence of breathing
Treatment
CPR
Send to hospital i...
Sec1.fa3   disorders of the circulatory system
Sec1.fa3   disorders of the circulatory system
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Sec1.fa3 disorders of the circulatory system

  1. 1. CIRCULATORY SYSTEM Made up of the heart and a network of blood vessels. Work constantly to keep all parts of the body supplied with blood which contains oxygen & nutrients. System can fail for 3 main reasons Severe bleeding & fluid loss Age Disease
  2. 2. COMPOSITION OF BLOOD Volume of blood 5 – 6 litres (M) 4 – 5 litres (F)
  3. 3. SHOCK Insufficient blood supply to the body’s vital organs Causes Heart fails to work Blood vessels dilates, reducing blood pressure Blood loss or loss of other body fluids
  4. 4. SHOCK Recognition A rapid pulse Pale, grey-blue skin Sweating & cold and clammy skin Weakness & giddiness Nausea, possibly vomiting Thirst Rapid, shallow breathing Restlessness, anxious & even aggressive May yawn or gasp for air Unconsciousness
  5. 5. SHOCK Body’s reaction to blood loss Approx. Volume Effect on the body 0.5 litre Little or no effect. 2 litres Quick pulse, sweating. Evident of shock. 3 litres Pulse at wrist might be undetectable. Casualty usually lost consciousness, breathing and heart may fail.
  6. 6. TREATMENT FOR SHOCK Lay casualty down on blanket and keep his head low. Reassure the casualty. Raise and support his legs. (Take note of any fractures) Loosen tight clothing.
  7. 7. TREATMENT FOR SHOCK Protect casualty from cold (DO NOT warm casualty with hot water bottle or any direct source of heat). Check breathing, pulse and level of response at regular intervals.
  8. 8. FAINTING Temporary loss of normal blood supply to the brain Causes Standing still for a long time. Sudden change of position Injury (often minor) An unpleasant sight
  9. 9. FAINTING Recognition Giddiness Blurred vision Weakness “Hot and Cold” feeling Yawning Slow, weak pulse Pale, cold, clammy skin Sweating Temporary loss of consciousness
  10. 10. TREATMENT FOR FAINTING Lay casualty down with legs raised, head and body on the ground. Loosen tight clothing. Check for injury or illness.
  11. 11. TREATMENT FOR FAINTING After recovery Let the casualty rest for a few minutes before moving. Make sure the casualty has plenty of fresh air. Reassure casualty. Help casualty to sit up gradually. Look for and treat any injury that has been sustained from the fall.
  12. 12. TREATMENT FOR FAINTING If casualty does not regain consciousness quickly, perform ABC check and be ready to resuscitate if necessary. Place casualty in recovery position. Dial 995 for an ambulance.
  13. 13. DISORDERS OF THE HEART – HEART ATTACK Occurs when blood supply to a part of the heart is interrupted. Causes Central chest pain, often spreading to jaw and left arm. Dyspnea & discomfort high in abdomen, often feeling similar to severe indigestion.
  14. 14. DISORDERS OF THE HEART – HEART ATTACK Causes Sudden faintness or giddiness “Ashen” skin and cyanosis at the lips Rapid, weak or irregular pulse Collapse, often without any warning.
  15. 15. DISORDERS OF THE HEART – HEART ATTACK Treatment Help casualty to a half sitting position, with the casualty’s head & shoulders well supported and his knees bent. Call for ambulance and state that you suspect a heart attack. Constantly monitor and record the casualty’s breathing and pulse rates. Prepare to resuscitate if necessary.
  16. 16. DISORDERS OF THE HEART – CARDIAC ARREST Any sudden stoppage of the heart Causes Heart attack Severe blood loss Suffocation Electric shock Hypothermia Drug overdose
  17. 17. DISORDERS OF THE HEART – CARDIAC ARREST Recognition Absence of pulse Absence of breathing Treatment CPR Send to hospital immediately.

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