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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
Natural Fibres used for the preparation of Surgical Dressings are obtained from	Plants Animals Minerals Synthetic & other Fibres
1 Material used alone or in combination to cover wound Made up of fibres Material which holds the dressing in desired position………BANDAGE 2 OS means __	1 Surgical dressings 2 Operating sponge
Surgical Dressings Functions Why do we use it?	1 Reduce or prevent infection 2 Mechanical support to the tissues 3 Arrest bleeding 4 Protection to healing wound RAMP
Pharmacopoeial Requirements for Surgical Dressings	1 Sterilized before use 2 Stored in dry, well-ventilated place below 25 C 3 Permitted antiseptics in prescribed concentrations be used 4 Dyed unless mentioned in monograph 5 Adhesive products not allowed to freeze 6 No loose threads, fibre ends
1 Types of Dressing	1 Natural and Manmade
1 Cheap and used a lot as filtering medium and in surgical dressings 2 Example 3 Source	1 Vegetable fibres 2 Cotton (syn. Raw Cotton, Purified Cotton, Absorbent Cotton) 3 Epidermal Trichomes covering seeds of Gossypium herbaceum, Fam Malvaceae
1 Composed mainly of cellulose and lignin The 2nd most important vegetable fibre next to cotton 2 __ are used to disintegrate bundles	1 JUTE 2 Lignocellulose; nitric acid, potassium chlorate
Pericyclic fibres of the stem of Linum usitatissimum Fam.Linaceae Commercial fibres show fine tranverse injuries from preparation Good quality fibre only lignified in middle lamella Utilized as raw material for high-quality paper such as currency notes and cigarette paper	FLAX
pericyclic fibres of Cannabis sativa stem Fam. Cannabinaceae Mostly cellulose, minimal lignification The original Levi’s jeans were made from this	HEMP
Used as Cellulose wadding (thick lining) Derived from pine and spruce wood ‘off cuts’ ‘ Delignified wood’ produced by “Sulphite process” to leave the cellulose	Chemical Wood Pulp (WOOD)
Vegetable Fibres List	1 JUTE 2 FLAX 3 HEMP 4 CHEMICAL WOOD PULP
From the fleece of the sheep Ovis aries, Fam Bovidae Treated before use to degrease it Washed with water, then soap solution, then bleached with sulphuric acid, (acetone removes wool fat), combed, graded Odor absorbent gives elasticity and warmth	WOOL
Prepared fibre from the cocoons of silk worms Bombyx mori, Fam Bombycidae/Moraceae Used pharmaceutically in the preparation of sutures, sieves and ligatures	SILK
Animal Fibres List	1 WOOL 2 SILK