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Chapt.14 Extempo...
Chapter 14 Extemporaneous Prescription Compounding
Class-A prescription balance: | A two-pan device that may be used for weighing small amounts of drugs (not more than 120 g). |
Compounding slab: | A plate made of ground glass with a hard, flat, and nonabsorbent surface for mixing compounds. |
Conical graduates: | Devices used for measuring liquids that have wide tops and wide bases and taper from the top to the bottom. |
Counter balance: | A device capable of weighing large quantities of bulk products, up to about 5 kg. It is a double-pan balance. |
Cylindrical graduates: | Devices used for measuring liquids that have narrow diameters that are the same from top to base. |
Electronic balance: | An instrument used to electronically weigh small amounts of drugs; the measurement is indicated on a digital screen. |
Extemporaneous compounding: | The preparation, mixing, assembling, packaging, and labeling of a drug product based on a prescription order from a licensed practitioner for the individual patient. |
Geometric dilution: | A process by which a uniform distribution of substances in a mixture is achieved. When mixing agents, the medicament is first mixed with an equal weight of diluent. |
Levigate: | To grind into a smooth substance with moisture. |
Master formula sheet: | A list of all ingredients, lot numbers, compounding instructions, and expiration dates of a compounded substance. |
Mortar: | A cup-shaped vessel in which materials are ground or crushed. |
Pestle: | A solid device that is used to crush or grind materials in a mortar. |
Pipette: | A long, thin, calibrated hollow tube, which is made of glass used for measuring liquids. |
Solvent: | The liquid substance in which another substance is being dissolved. |
Tablet triturates: | Solid, small, and usually cylindrically molded or compressed tablets. |
Tare: | The weight of an empty capsule used to compare with the full capsule. |
Triturate: | To reduce to a fine powder by friction. |
Types of balances: | Class A and counters. |
Weights must be picked up using forceps: | Because the oils from the person's hand, making it inaccurate in measurement. |
Elixirs: | Contains alcohol and water; water-soluble is added to the alcohol-soluble. |
Emulsion: | Has oil-in-water (non-greasy and oral use) or water-in-oil (greasy and external use), prepared with wet gum or dry gum methods. |
Ointments: | Oil-based |
Creams: | Water-based |
Pastes: | Contains higher amount of solids, will not melt at body temperature. |
Gels: | Consist of small or large particles in suspension |
Suppositories: | A solid that is inserted rectally, vaginally, or urethrally |