injection /in·jec·tion/ (in-jek´shun)
Injection
injection
injection [in-jek´shun]
1. the forcing of a liquid into a part, as into the subcutaneous tissues, the vascular tree, or an organ.
2. a substance so forced or administered; in pharmacy, a solution of a medicament suitable for injection.
hypodermic injection subcutaneous i.
intracutaneous injection intradermal i.
intracytoplasmic sperm injection (ICSI) a micromanipulation technique used in male factor infertility, with insertion of a spermatocyte directly into an oocyte.
intradermal injection one made into the dermis or substance of the skin.
intramuscular injection one made into the substance of a muscle.
intrathecal injection injection of a substance through the theca of the spinal cord into the subarachnoid space.
intravenous injection one made into a vein.
jet injection one made through the intact skin by an extremely fine jet of the solution under high pressure.
lactated Ringer's injection a sterile solution of calcium chloride, potassium chloride, sodium chloride, and sodium lactate in water for injection, given as a fluid and electrolyte replenisher.
Ringer's injection a sterile solution of sodium chloride, potassium chloride, and calcium chloride in water for injection, used as a fluid and electrolyte replenisher.
subcutaneous injection one made into the subcutaneous tissues.
in·jec·tion ( n-j k sh n)n. 1. The act of injecting a substance into a tissue, vessel, canal, or organ. 2. Something that is injected, especially a dose of liquid medicine injected into the body. 3. Congestion or hyperemia. |
Injection
Forcing a fluid into the body by means of a needle and syringe.
Mentioned in: Transfusion
injection
[injek′shən]
Etymology: L, in, within, jacere, to throw
1 the act of forcing a liquid into the body by means of a needle and syringe. Injections are designated according to the anatomic site involved; the most common are intraarterial, intradermal, intramuscular, intravenous, and subcutaneous. Parenteral injections are usually given for therapeutic reasons, although they may be used diagnostically. Sterile technique is maintained. Compare infusion, instillation, insufflate.
2 the substance injected.
3 redness and swelling observed in the physical examination of a part of the body, caused by dilation of the blood vessels secondary to an inflammatory or infectious process. inject, v.
injection [in-jek´shun]
1. congestion.
2. the forcing of a liquid into a part, as into the subcutaneous tissues, the vascular tree, or an organ.
3. a substance so forced or administered; in pharmacy, a solution of a medicament suitable for injection.
Immunizing substances, or inoculations, are generally given by injection. Some medicines cannot be given by mouth because chemical action of the enzymes and digestive fluids would change or reduce their effectiveness, or because they would be removed from the body too quickly to have any effect. Occasionally a medication is injected so that it will act more quickly. In addition to the most common types of injections described below, injections are sometimes made into arteries, bone marrow, the spine, the sternum, the pleural space of the chest region, the peritoneal cavity, and joint spaces. In sudden heart failure, heart-stimulating drugs may be injected directly into the heart (intracardiac injection).
Immunizing substances, or inoculations, are generally given by injection. Some medicines cannot be given by mouth because chemical action of the enzymes and digestive fluids would change or reduce their effectiveness, or because they would be removed from the body too quickly to have any effect. Occasionally a medication is injected so that it will act more quickly. In addition to the most common types of injections described below, injections are sometimes made into arteries, bone marrow, the spine, the sternum, the pleural space of the chest region, the peritoneal cavity, and joint spaces. In sudden heart failure, heart-stimulating drugs may be injected directly into the heart (intracardiac injection).
Sites for injections. A, subcutaneous injection sites. B, intramuscular injection site for children in the vastus lateralis muscle. C, D, and E, intramuscular injection sites for adults: C, deltoid muscle injection site. D, injection site in the buttock (dorsogluteal site). E, injection site in the anterolateral thigh (ventrogluteal site).
hypodermic injection subcutaneous injection.
intracutaneous injection intradermal injection.
intracytoplasmic sperm injection (ICSI) a micromanipulation technique used in male factor infertility; a single spermatocyte is inserted into an oocyte by micropuncture.
intradermal injection injection of small amounts of material into the corium or substance of the skin, done in diagnostic procedures and in administration of regional anesthetics, as well as in treatment procedures. In certain allergy tests, the allergen is injected intracutaneously. These injections are given in an area where the skin and hair are sparse, usually on the inner part of the forearm. A 25-gauge needle, about 1 cm long, is usually used and is inserted at a 10- to 15-degree angle to the skin.
intramuscular injection injection into the substance of a muscle, usually the muscle of the upper arm, thigh, or buttock. Intramuscular injections are given when the substance is to be absorbed quickly. They should be given with extreme care, especially in the buttock, because the sciatic nerve may be injured or a large blood vessel may be entered if the injection is not made correctly into the upper, outer quadrant of the buttock. The deltoid muscle at the shoulder is also used, but less commonly than the gluteus muscle of the buttock; care must be taken to insert the needle in the center, 2 cm below the acromion.
Injections into the anterolateral aspect of the thigh are considered the safest because there is less danger of damage to a major blood vessel or nerve. The area permits multiple injections, is more accessible, and is easier to stabilize, particularly in pediatric patients or others who are restless and uncooperative. The vastus lateralis muscle is located by identifying the trochanter and the side of the knee cap and then drawing a visual line between the two. The distance is then divided into thirds and the needle inserted into the area identified as the middle third.
The needle should be long enough to insure that the medication is injected deep into the muscle tissue. The gauge of the needle depends on the viscosity of the fluid being injected. As a general rule, not more than 5 ml is given in an intramuscular injection for an adult. The maximum for an infant is 0.5 ml, and the injection is made into the vastus lateralis muscle. The needle is inserted at a 90-degree angle to the skin. When the gluteus maximus muscle is the site chosen for the injection, the patient should be in a prone position with the toes turned in if possible. This position relaxes the muscle and makes the injection less painful.
Injections into the anterolateral aspect of the thigh are considered the safest because there is less danger of damage to a major blood vessel or nerve. The area permits multiple injections, is more accessible, and is easier to stabilize, particularly in pediatric patients or others who are restless and uncooperative. The vastus lateralis muscle is located by identifying the trochanter and the side of the knee cap and then drawing a visual line between the two. The distance is then divided into thirds and the needle inserted into the area identified as the middle third.
The needle should be long enough to insure that the medication is injected deep into the muscle tissue. The gauge of the needle depends on the viscosity of the fluid being injected. As a general rule, not more than 5 ml is given in an intramuscular injection for an adult. The maximum for an infant is 0.5 ml, and the injection is made into the vastus lateralis muscle. The needle is inserted at a 90-degree angle to the skin. When the gluteus maximus muscle is the site chosen for the injection, the patient should be in a prone position with the toes turned in if possible. This position relaxes the muscle and makes the injection less painful.
intrathecal injection injection of a substance through the theca of the spinal cord into the subarachnoid space. Patients receiving intrathecal chemotherapy for metastatic malignancy of the central nervous system should maintain a flat or Trendelenburg position for one hour after treatment to achieve optimum distribution of the drug.
intravenous injection an injection made into a vein. Intravenous injections are used when rapid absorption is called for, when fluid cannot be taken by mouth, or when the substance to be administered is too irritating to be injected into the skin or muscles. In certain diagnostic tests and x-ray examinations a drug or dye may be administered intravenously. (See also intravenous infusion.)
jet injection injection of a drug in solution through the intact skin by an extremely fine jet of the solution under high pressure.
subcutaneous injection injection made into the subcutaneous tissues. Although usually fluid medications are injected, occasionally solid materials such as steroid hormones may be injected in small, slowly absorbed pellets to prolong their effect. Subcutaneous injections may be given wherever there is subcutaneous tissue, usually in the upper outer arm or thigh. A 25-gauge needle about 2 cm long is usually used, held at a 45-degree angle to the skin, and the amount injected should not exceed 2 ml in an adult. Subcutaneous insulin injections may be given at a 90-degree angle with an insulin syringe. Called also hypodermic injection.
Angle of needle insertion for administering a subcutaneous injection. From Lammon et al., 1995.
Z-track injection see z-track injection.
injection (injek´sh
n),n 1. the injection of material into an area.
2. the act of introducing a liquid into the body by means of a needle and syringe. Injections are designated according to the anatomic site involved. The most common injections are intraarterial, intradermal, intramuscular, intravenous, and subcutaneous. The colloquial term is
shot.
2. the act of introducing a liquid into the body by means of a needle and syringe. Injections are designated according to the anatomic site involved. The most common injections are intraarterial, intradermal, intramuscular, intravenous, and subcutaneous. The colloquial term is
shot.
injection, Gow-Gates (GG),
injection, interseptal
n an intraosseous injection of a local anesthetic agent in the interseptal bone between two teeth. Often used as a supplemental form of local anesthesia when more anesthesia is needed.
injection, intraosseous
(in´tros´-ēs),
n an injection of a local anesthetic agent directly into the alveolar bone. Can include an interseptal injection and periodontal ligament injection.
os´-ēs), n an injection of a local anesthetic agent directly into the alveolar bone. Can include an interseptal injection and periodontal ligament injection.
injection molding,
n See molding, injection.
injection, periodontal ligament (intra-ligamentary)
(per´ēōdon´tl lig´-mnt in´trlig´men´trē),
n an intraosseous injection of a local anesthetic agent directly to the alveolar bone surrounding the periodontal ligament. Often used as a supplemental form of local anesthesia when preliminary methods have proven ineffective.
l lig´-mnt in´trlig´men´trē), n an intraosseous injection of a local anesthetic agent directly to the alveolar bone surrounding the periodontal ligament. Often used as a supplemental form of local anesthesia when preliminary methods have proven ineffective.
injection
1. the forcing of a liquid into a part, as into the subcutaneous tissues, the vascular tree, or an organ.
2. a substance so forced or administered; in pharmacy, a solution of a medicament suitable for injection.
3. congestion.
4. immunizing substances, or inoculations, are generally given by injection. When a patient is unconscious, injection may be the only means of administering medication, and in some cases nourishment. Some medicines cannot be given by mouth because chemical action of the digestive juices or of hepatic enzymes would change or reduce their effectiveness, or because they would be removed from the body too quickly to have any effect. Certain potent medicines must be injected because they would irritate body tissues if administered any other way. A medication may be injected so that it will act more quickly.
In addition to the most common types of injections described below, injections are sometimes made under the conjunctiva, into arteries, bone marrow, the spine, the sternum, the pleural space of the chest region, the peritoneal cavity and joint spaces.
injection collar
a collar carrying an injection device which can be triggered from a remote site.
epidural injection
see epidural.
hypodermic injection
subcutaneous injection.
intradermal injection, intracutaneous injection
injection of small amounts of material into the corium or substance of the skin. This method is used in diagnostic procedures and in administration of regional anesthetics, as well as in treatment procedures. In certain allergy tests, the allergen is injected intracutaneously. These injections are given in an area where the skin and hair are sparse, usually on the inner part of the thigh in dogs or the caudal fold in cows. A small-gauge needle is recommended and it is inserted at a 10- to 15-degree angle to the skin.
intramuscular injection
injection into the substance of a muscle, usually the thigh or pectoral muscle, or the muscle of the neck or rump. Intramuscular injections are given when the substance is to be absorbed quickly. They should be given with extreme care, especially in the thigh, because the sciatic nerve may be injured or a large blood vessel may be entered if the injection is made without drawing back on the syringe first.
intraperitoneal injection
liquid injection, usually of antibacterial agent, rarely anesthetic or euthanatizing agents, administered to obtain systemic blood levels of the agent; faster than subcutaneous or intramuscular injection and used when veins not accessible. The needle is introduced into the upper flank and the syringe plunger withdrawn to ensure that intestine has not been penetrated. The injected solution should run freely.
intratesticular injection
a method of administering a general anesthetic agent to boars for castration.
intravenous injection
an injection made into a vein. Intravenous injections are used when rapid absorption is called for, when fluid cannot be taken by mouth, or when the substance to be administered is too irritating to be injected into the skin or muscles. In certain diagnostic tests and x-ray examinations, a drug or dye may be administered intravenously. Blood transfusions also are given by this route. See also intravenous infusion.
subarachnoid injection
the risk of injection is greatest at the atlanto-occipital space where the vertebral venous plexus is most likely to be lacerated.
subcutaneous injection
injection made into the subcutaneous tissues; called also hypodermic injection. Although usually fluid medications are injected, occasionally solid materials, such as steroid hormones, are administered subcutaneously in small, slowly absorbed pellets to prolong their effect. Subcutaneous injections may be given wherever there is subcutaneous tissue, usually in the loose skin on the side of the chest or in the flank. The amount injected should not exceed 2 ml for cats and small dogs, 5 ml for large dogs and 20 ml for horses. Cows are often given 200 ml because of their very loose skin. The needle is held at a 45-degree angle to the skin.
injection
1. A state of visible hyperaemia due to dilatation and engorgement of the small blood vessels. 2. The act of introducing a drug into the body.
ciliary injection Redness (almost lilac) around the limbus of the eye caused by dilatation of the deeper small blood vessels located around the cornea. It occurs in inflammation of the cornea, iris and ciliary body, and in angle-closure glaucoma. Each of these conditions is associated with loss of vision and usually pain. Syn. ciliary flush. See ocular decongestant; red eye; pericorneal plexus.
conjunctival injection Redness (bright red or pink) of the conjunctiva fading towards the limbus due to dilatation of the superficial conjunctival blood vessels occurring in conjunctival inflammations. There is no loss of vision but ocular discomfort and no pain. See ocular decongestant; red eye; thyroid ophthalmopathy; pericorneal plexus.
intravitreal injection Injection into the eye posterior to the limbus and directed towards the vitreous. It may be used to administer medication, corticosteroids (e.g. triamcinolone), an antiviral agent (e.g. ganciclovir) in extremely severe ocular inflammations, usually of a purulent nature, to inject antibiotics (e.g. amikacin, ceftazidime, vancomycin) immediately after vitrectomy, or to inject anti-VEGF drugs in the treatment of wet age-related macular degeneration.
peribulbar injection Injection of a local anaesthetic (e.g. bupivacaine, lidocaine, procaine) around the globe (either single or multiple injections) to produce anaesthesia of the globe and periocular tissues, as well as paralysis of the extraocular muscles. Peribulbar injection may also be used to administer medication (e.g. corticosteroids) in posterior segment inflammation. Syn. peribulbar block.
retrobulbar injection Injection of a local anaesthetic into the muscle cone behind the eye to produce anaesthesia of the globe and periocular tissues, as well as paralysis of the extraocular muscles. It is used less commonly than peribulbar block. Syn. retrobulbar block.
subconjunctival injection A method of administering medication (e.g. antibiotics, corticosteroids, mydriatics) postoperatively, or in acute anterior segment inflammations. An area of conjunctiva away from the limbus is lifted to form a bleb and an injection is made into it.
sub-Tenon's injection Injection of a local anaesthetic near or beyond the equator using a cannula, which has been inserted under the conjunctiva and Tenon's capsule a few mm from the limbus and slid posteriorly to produce anaesthesia of the globe as well as paralysis of the extraocular muscles. A sub-Tenon's injection may also be used to administer medication (e.g. corticosteroids) in posterior segment inflammation.
ciliary injection Redness (almost lilac) around the limbus of the eye caused by dilatation of the deeper small blood vessels located around the cornea. It occurs in inflammation of the cornea, iris and ciliary body, and in angle-closure glaucoma. Each of these conditions is associated with loss of vision and usually pain. Syn. ciliary flush. See ocular decongestant; red eye; pericorneal plexus.
conjunctival injection Redness (bright red or pink) of the conjunctiva fading towards the limbus due to dilatation of the superficial conjunctival blood vessels occurring in conjunctival inflammations. There is no loss of vision but ocular discomfort and no pain. See ocular decongestant; red eye; thyroid ophthalmopathy; pericorneal plexus.
intravitreal injection Injection into the eye posterior to the limbus and directed towards the vitreous. It may be used to administer medication, corticosteroids (e.g. triamcinolone), an antiviral agent (e.g. ganciclovir) in extremely severe ocular inflammations, usually of a purulent nature, to inject antibiotics (e.g. amikacin, ceftazidime, vancomycin) immediately after vitrectomy, or to inject anti-VEGF drugs in the treatment of wet age-related macular degeneration.
peribulbar injection Injection of a local anaesthetic (e.g. bupivacaine, lidocaine, procaine) around the globe (either single or multiple injections) to produce anaesthesia of the globe and periocular tissues, as well as paralysis of the extraocular muscles. Peribulbar injection may also be used to administer medication (e.g. corticosteroids) in posterior segment inflammation. Syn. peribulbar block.
retrobulbar injection Injection of a local anaesthetic into the muscle cone behind the eye to produce anaesthesia of the globe and periocular tissues, as well as paralysis of the extraocular muscles. It is used less commonly than peribulbar block. Syn. retrobulbar block.
subconjunctival injection A method of administering medication (e.g. antibiotics, corticosteroids, mydriatics) postoperatively, or in acute anterior segment inflammations. An area of conjunctiva away from the limbus is lifted to form a bleb and an injection is made into it.
sub-Tenon's injection Injection of a local anaesthetic near or beyond the equator using a cannula, which has been inserted under the conjunctiva and Tenon's capsule a few mm from the limbus and slid posteriorly to produce anaesthesia of the globe as well as paralysis of the extraocular muscles. A sub-Tenon's injection may also be used to administer medication (e.g. corticosteroids) in posterior segment inflammation.
injection
Forced adminstration of a fluid usually understood to be by needle. See Bolus injection, Intracellular sperm injection, Intrathecal injection, Intravenous injection, Nipent® (pentostatin) injection, Therapeutic
injection.
Patient discussion about injection.
Q. Should I vaccinate my newborn against Hepatitis B? I am 9 months pregnant and am expecting to give birth anytime soon. I understood that my newborn will receive a vaccine against Hepatitis B in the hospital. Why is this so?
A. because this is bullshit! Hey! Wake up! the lymph system of your baby will only be "ready and finished" after three years! so how should your baby manage a toxic vaccination? do you know what they put in the vaccination? they put hepatitis B pathogens/virus with the hope that your baby will be able to build an anti-hepatitis B pathogen and so manage itself in the future hepatitis B! how should your baby do that, when his lymph-system just started to develop itself and will only be ready in three years? please read in the links i send to you:
before you would like to go on with any vaccination, you should check out this very long list of links:
http://www.aegis.ch/neu/links.html
at the bottom you will also find links in english. vaccinations in general are very disputable/dubious and it is probably time that we learn about it.
before you would like to go on with any vaccination, you should check out this very long list of links:
http://www.aegis.ch/neu/links.html
at the bottom you will also find links in english. vaccinations in general are very disputable/dubious and it is probably time that we learn about it.
Q. Great depression after I lost huge amount of money in my business. I am very scared about injections... I am in a great depression after I lost huge amount of money in my business. Doctor described the symptoms of my severe depression. To be honest I am very scared about medicines and injections and would like to know whether depression can go away without seeking medical help? I like to concentrate on my new career soon.
A. Your fears are based on unknowns. You have to trust someone who can see you in the big picture. Often we patients just can't see how we really are, while the doctor is trained to recogize symptoms and make diagnoses. Lots of patients including myself are scared to take antidepressnats initially. It may take time to accept yourself as someone with a malady. Trust your doctor. Be patient. Don;t be too hard on yourself and let your doctor help you.
Q. I was diagnosed with "Baker's cyst". The pain in very irritating. what can I do to ease the pain? I was diagnosed with "Baker's cyst". The pain in very irritating but I prefer not to undergo surgery or steroid injections. is there another more "holistic" way to take care of my situation?
A. Here are some more "holistic" options that helped me (though you should consult your doctor before doing anything...):
Knee bracing and quadriceps physiotherapy.
If you don't want surgery and don't want to be injected with steroids, but it is OK with you to suction the cyst - I heard it can help a lot, but I must say I didn't try it.
Read more or ask a question about injectionKnee bracing and quadriceps physiotherapy.
If you don't want surgery and don't want to be injected with steroids, but it is OK with you to suction the cyst - I heard it can help a lot, but I must say I didn't try it.
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