Fever (Pyrexia)
- Created by: Aoife___
- Created on: 17-10-22 23:22
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- Fever (Pyrexia)
- 1. Rise in body temperature above the normal i.e oral temperature (37.2oC)
- 1. Pyrogens a circulating protein – agent that produce a fever – can reset the thermostat in the hypothalamus & cause rise in body temperature
- 2. Exogeneous pyrogens – derived from outside the host
- 3. Endogeneous pyrogens –produced by individual
- 4. Pathogens, bacterial toxins & antigen-antibody complexes may act as pyrogens OR stimulate release of pyrogens by macrophages
- 3. Endogeneous pyrogens –produced by individual
- 2. Exogeneous pyrogens – derived from outside the host
- Fever
- Pyro = Heat
- 3. Healing cells stop releasing chemicals
- 4. Sweating = Vasodilation
- 1. Injured cells start releasing chemicals
- 2. Shivering = Vaso-constriction
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