tetanus immune globulin
Definition
Noun: - A sterile medicinal preparation containing concentrated antibodies (immunoglobulins) obtained from the blood plasma of human donors who have been immunized against tetanus. It is used to provide immediate, temporary protection against tetanus toxin following a potential exposure to the tetanus bacterium.
Usage
- Primary Use: Administered as an injection for post-exposure prophylaxis (preventive treatment) after a wound that carries a risk of tetanus infection, especially when a person's vaccination history is unknown or incomplete.
- Medical Context: It provides passive immunity by directly introducing ready-made antibodies to neutralize the tetanus toxin, offering protection for a short period (weeks). This is different from a tetanus vaccine, which stimulates the body's own long-term active immunity.
Examples
- Medical Instruction:
- The doctor administered tetanus immune globulin immediately after the patient's deep puncture wound from a rusty nail.
- Comparative Explanation:
- While the tetanus toxoid vaccine is for long-term prevention, tetanus immune globulin is for emergency treatment of recent exposures.
Advanced Usage
- Abbreviation: Often abbreviated as TIG in medical charts and literature.
- The standard protocol calls for a dose of 250-500 units of TIG for post-exposure prophylaxis.
- Administration: It is typically given intramuscularly, at a site different from where the tetanus toxoid vaccine is administered if both are required.
Variants and Related Words
- Tetanus Immunoglobulin: A synonymous term used interchangeably with tetanus immune globulin.
- Human Tetanus Immune Globulin (HTIG): The full technical name, specifying the human source of the antibodies.
- Tetanus Antitoxin: A related but distinct product derived from horse serum; TIG (human-derived) is now preferred due to a lower risk of adverse reactions.
Synonyms
- Tetanus IG
- TIG
- Hyperimmune tetanus globulin
Notes on Meaning
This term refers specifically to the antibody product itself. It is not a verb, adjective, or a general state of being immune. Its meaning is highly specialized within the field of immunology and emergency medicine.
Noun
-
sterile solution of globulins derived from the blood plasma of a person who has been immunized for tetanus; provides short-term immunization against tetanus in cases of possible exposure to the tetanus bacillus
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