Prevention methods for accidents during pig injection

Injection is simple to perform and easy to master, but neglecting certain necessary precautions during injection can also easily lead to accidents that should not happen. For example, poor disinfection of the syringe and injection site or improper site selection, animals biting, contamination by manure and urine, etc., can cause inflammation and suppuration at the injection site. If inflammation occurs, it can be treated according to the therapies for inflammation and suppurative wounds. If proper restraint of the affected animal is not attended to before injection and then the procedure is carried out, the result is restlessness of the livestock and strong muscle contraction, or uneven force when inserting the needle, or the needle being inserted its full length into the tissue, causing bending and breaking of the needle, which is mostly seen in intramuscular injection. If a bent needle is found before injection, another needle can be used instead; do not straighten the bent needle and use it again. If the needle breaks, and a little of the needle is found still outside the skin, the surrounding skin can be pressed downward, and when the needle is exposed, secure the needle and remove it with an instrument. If not even a little of the needle can be felt outside the skin because it is deep, local anesthesia should be given, the skin incised, and the needle removed. In addition, during intravenous injection, if the needle is not inserted accurately or because of restlessness of the animal, the injected medicinal liquid is easily leaked outside the blood vessel into the subcutaneous tissue or muscle, and the skin and muscle will immediately swell, especially if highly irritating liquids such as chloral hydrate, calcium chloride and hypertonic saline leak outside the blood vessel, which can easily cause tissue inflammation and necrosis. At this time, part of the medicinal liquid that has leaked outside the blood vessel should be aspirated back in a timely manner. If calcium chloride leaks into the subcutaneous tissue, 10 to 20 milliliters of 10% sodium thiosulfate or 10% sodium sulfate can be injected in a timely manner, turning it into non-irritating calcium sulfate and sodium chloride. When too much medicinal liquid leaks outside into the subcutaneous tissue, it should be incised early, drained with hypertonic fluid, or the local area can be hot-compressed with 5% magnesium sulfate or hot vinegar, 4 to 6 times daily, half an hour each time, so as to make the circulation vigorous, relieve pain and promote absorption.