SLP

  Dressings: They are used to protect a wound and prevent infection, but also to allow healing. A dressing should be large enough to totally cover the wound, with a safety margin of about 2.5 cm on all sides beyond the wound. A sterile dressing may be used to control bleeding from a major wound or to absorb any discharge from a minor wound. Burn gel dressing: instantly removes heat from a burn or scald, dissipating the heat and preventing the burn from progressing deeper into the skin tissue. Bandages: A bandage is used in combination with a dressing where a wound is present. a)       Roller bandage is used to: • hold a dressing in place on a wound • maintain pressure over a bulky pad to control bleeding • support an injured limb or joint • apply pressure to a limb Roller bandages are made from lightweight cotton, crepe or elasticized crepe, depending on the pressure to be achieved. A lightweight cotton bandage is used to hold a dr...

  COMMON LABORATORY ACCIDENTS Causes of accidents Poorly designed laboratory and overcrowding Poor or careless handling of hand tools Inadequate lighting / ventilation Fall on hard, slippery floor, on sharp objects or heavy objects falling on a person Careless handling, storage and transportation of chemicals or lab animals Lack of or improper use appropriate personal protective equipment   Main accidents linked to the laboratory: Infections: entry points include: mouth pipetting could lead to ingestion of pathogens, entry of pathogens through cuts, punctures …etc.   Burns and scalds: through use of flammable chemicals or spills of chemical corrosive on skin.   Cuts: handling breakages, using glassware with cracked edges. A wound is a break in the continuity of the body surface (skin) which allows escape of blood and entry of micro-organisms.   Types of wounds Ø   Incised wounds: caused by a cutting by a sharp edged objec...