Effect of anaemia on the circulatory system

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Unformatted text preview: reduction in O2 ­ carrying capacity of the blood. This reduction in O2 carriage is due to: 1. Decrease in no. of RBC. 2. Decrease in Hb amount in RBC. Clinical features of anaemia Clinical Are mostly due to the decrease in O2 carriage by blood. These include: fatigue, breathlessness on exertion, palpitation, dizziness, headache, dimness of vision, insomnia, parashtesia in fingers and toes, pallor of the skin and mucous membranes and conjunctivae tachycardia. Effect of Anaemia on the circulatory system: circulatory Due to decrease in RBC’s number, the Viscosity of blood is decreased. This decreases the resistance to blood flow in the peripheral vessels and this increases the venous return to the heart hypoxia caused by anaemia causes vasodilatation and this leads to an increase in venous return. So there will be an increase in cardiac output (i.e. increased workload on the heart). The increase in COP offsets some effects of anaemia on tissues (hypoxia). However when tissue demands of O2 during exercise. Cause...
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