Презентация на тему Injections. Punctures

fluid into the body, usually with a syringe and

a hollow needle which is pierced through the skin to a sufficient depth for the material to be administered into the body. An injection follows a parenteral route of administration; that is, administration via a route other than through the digestive tract.

or infusion used in animals, including intradermal, subcutaneous, intramuscular,

intravenous, intraosseous, intraperitoneal, intrathecal, epidural, intracardiac, intraarticular, intracavernous, and intravitreal. Rodents used for research are often administered intracerebral, intracerebroventricular, or intraportal injections as well.

to consumers for intramuscular injections. In cattle, for example,

intramuscular injections where possible, are often given in the neck area instead of the hip.
Give intramuscular injections deep into a muscle. Use a needle long enough to penetrate skin, subcutaneous tissue and fat to reach the muscle. The needle should enter the skin perpendicular to the skin surface.
Insert the needle into the animal, and then attach the syringe to the needle. Check that the needle is not in a blood vessel by pulling back on the plunger and observing for blood flow in the tip of the syringe. If blood appears, remove the needle and put it in a different location at least one inch away from the original injection site.

neck in front of the shoulder, or over the

ribs well behind the shoulder.
Use a 0.5 to 1 inch long needle.
To give Subcutaneous injections for cattle, lift a fold of skin to make a skin "tent". Insert the needle through one side of the tent at an angle of 30 to 45 degrees relative to the surface of the body. For swine, it won't be possible to make a "tent", so slide the needle under the skin at an angle of about 30 degrees from parallel to the skin surface and inject.

substances directly into a vein. Intravenous simply means "within

vein". Therapies administered intravenously are often included in the designation of specialty drugs. It is commonly referred to as a drip because many systems of administration employ a drip chamber, which prevents air from entering the blood stream (air embolism), and allows an estimation of flow rate.
Intravenous therapy may be used to correct electrolyte imbalances, to deliver medications, for blood transfusion or as fluid replacement to correct, for example, dehydration. Intravenous therapy can also be used for chemotherapy.
Compared with other routes of administration, the intravenous route is the fastest way to deliver fluids and medications throughout the body. The bioavailability of the medication is 100% in Intravenous therapy.

absorption is delayed or blocked.
Drug residues in meat or

milk if the drug can not be absorbed and metabolized in a timely manner.
Animal suffering and incapacitation due to nerve damage and swelling from tissue reactions.
Excessive trim at slaughter due to abscess, scarring, broken needles.
Shock or death of the animal being treated, if medications unintentionally enter the bloodstream.
Accidental human injection.

should be permanently recorded to ensure withdrawal time requirements

are met and to improve treatment decisions and success.
Keep permanent written records of treatments administered to individuals or groups of animals.
Record the animal's identification, date(s) the treatment was given, product name, amount given, the route, site and time when meat or milk will be ready for sale.

obtain a single, large, good quality sample from a

euthanised mouse or a mouse under deep terminal anaesthesia if coagulation parameters, a separate arterial or venous sample or cardiac histology are not required. It is appropriate for all strains of mouse.
Cardiac puncture should not be used if the peritoneum needs to be lavaged to harvest cells, as this technique can cause blood to escape into the peritoneal cavity.

or infection of a peripheral joint. Cytologic and microbiologic

analyses of joint fluid help differentiate septic and infectious arthritis from immune-mediated or simple inflammatory arthritis. Aspiration of a joint may also help confirm hemarthrosis following trauma or in association with clotting abnormalities. One or more joints may be aspirated, depending upon the clinical presentation and history. In cases of polyarthritis, multiple joints are often aspirated.
Arthrocentesis is also performed for the purpose of insertion of radiologic contrast medium when positive contrast arthrography is undertaken. Occasionally arthrocentesis is used to administer therapeutic medications intrasynovially.

sedation for the procedure. Ill and debilitated animals may

only require manual restraint. A subcuticular infusion of 2% lidocaine provides local anesthesia and is particularly helpful in animals with painful joints. Care must be taken to avoid infusing the lidocaine into the joint space. Contrast arthrography is routinely performed under heavy sedation or general anesthesia.
Positioning - The animal is placed in lateral recumbency when arthrocentesis of the shoulder, elbow, stifle or hock joints is performed. The carpal joint may be aspirated in either sternal or lateral recumbency.
Materials - A 3 or 6 ml syringe with a 22 g. needle is most commonly used. An EDTA tube should be available for collection of fluid for cytologic analysis. A culturette in transport medium or thioglycolate broth is used when samples are submitted for bacterial culture.

and prepared using aseptic technique. The joint capsule is

usually distended and is carefully palpated to identify the ideal point of insertion of the needle.
When aspirating the stifle, the joint is flexed and the distal portion of the patella is located. The proximal edge of the tibial tuberosity is also palpated and the needle is inserted approximately 2/3 the way between the tuberosity and the patella, just lateral to the patellar tendon. The needle is directed towards the center of the joint, between the two femoral condyles.

the carpus partially flexed. The needle is usually inserted

into the medial aspect of the radiocarpal joint, but may be inserted into any of the distended intercarpal spaces.