Foam
Foam (medicine)
Foam (pronounced: /foʊm/) is a substance that is formed by trapping pockets of gas in a liquid or solid. In the context of medicine, foam can refer to a type of dosage form for drugs, a type of medical dressing, or a type of ultrasound contrast agent.
Etymology
The word "foam" comes from the Old English word "fām", which has the same meaning.
Foam as a dosage form
In pharmaceuticals, a foam is a type of dosage form that is used to deliver certain types of medication. It is typically used for topical applications, such as in the treatment of skin conditions. The foam is designed to break down upon contact with the skin, releasing the active ingredient. Examples of medications that may be delivered in foam form include corticosteroids and antifungal medications.
Foam as a medical dressing
Foam can also refer to a type of medical dressing that is used to treat wounds. Foam dressings are highly absorbent and are used for wounds that have a high level of exudate. They can also provide a moist wound healing environment, which can promote the healing process.
Foam as an ultrasound contrast agent
In the field of medical imaging, foam can refer to a type of ultrasound contrast agent. These agents are used to enhance the images produced by ultrasound scans. The foam helps to reflect the ultrasound waves, creating a clearer image.
Related terms
- Emulsion: A mixture of two or more liquids that are normally immiscible. Foams are a type of emulsion.
- Aerosol: A suspension of fine solid particles or liquid droplets in air or another gas. Foams can be considered a type of aerosol.
- Surfactant: A substance that reduces the surface tension of a liquid. Surfactants are often used in the creation of foams.
External links
- Medical encyclopedia article on Foam
- Wikipedia's article - Foam
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