The principle of painkiller injections

Nov 25, 2022 Source: Cainiu Health

Dr. Yang Shuwen

Introduction

The mechanism of pain-relieving injections mainly includes blocking the neural pathways of pain sensation, improving systemic blood circulation, and reducing inflammatory responses. When using pain-relieving injections, it is essential to strictly follow medical instructions. If the diagnosis is unclear, it is advisable to avoid using pain-relieving injections as much as possible, to prevent interference with the doctor's assessment of the patient's condition and delay in treatment.

The mechanism of pain-relieving injections mainly includes blocking the neural pathways of pain sensation, improving blood circulation, and reducing inflammation.

1. Blocking Pain Signal Transmission Pathways

Pain-relieving injections can effectively inhibit the movement of sodium and potassium ions across nerve cell membranes, potentially causing membrane degeneration or necrosis, thereby effectively interrupting the conduction of nerve impulses.

2. Improving Blood Circulation

If pain is caused by poor blood flow, using pain-relieving injections as prescribed by a doctor can effectively alleviate sympathetic nerve blockage and promote systemic blood circulation, helping to relieve pain.

3. Reducing Inflammation

Some pain may be related to local inflammatory responses. Taking non-steroidal anti-inflammatory drugs (NSAIDs) or corticosteroid injections as directed by a physician can effectively control the body's inflammatory response, aiding in pain relief.

It is essential to strictly follow medical instructions when using pain-relieving injections. If the diagnosis is unclear, it is advisable to avoid using such injections to prevent interference with the physician's assessment of the patient's condition.

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How long does dizziness and vomiting last after receiving a pain-relief injection?

In general, dizziness and vomiting after receiving a painkiller injection will subside within about 1 to 2 hours. If symptoms persist, prompt medical evaluation and treatment at a hospital are necessary. Dizziness and vomiting following a painkiller injection may be caused by side effects of the medication. If such symptoms occur, it is best to consult a doctor about discontinuing the drug or switching to an alternative medication.

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How long can a postoperative pain-relief injection provide pain relief?

Pain-relieving injections are usually administered via intramuscular, intravenous, or subcutaneous routes. These methods allow the medication to enter the bloodstream more rapidly and quickly distribute throughout the body to the site of pain or to nerve endings involved in pain perception, thereby providing analgesic effects. Commonly used drugs include morphine and celecoxib, which can offer relatively long-lasting pain relief.

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How long should one wait before receiving a second pain-relief injection?

Painkiller injections are generally repeated every 6 to 8 hours. Since different types of painkillers vary in their effects and duration, the interval between injections may differ and should be administered under a doctor's guidance. It is recommended not to use painkiller injections too frequently, as this may lead to dependence. Engaging in enjoyable activities to distract attention can also help alleviate pain.

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What should I do if I still have pain after receiving a painkiller injection for kidney stones?

If the location of the patient's low back pain can be confirmed, local spasms may be relieved through manual pressure to alleviate symptoms. Patients may also follow medical advice to use M-cholinergic receptor blockers such as progesterone injection or atropine sulfate injection for treatment. If conservative treatment fails, surgical interventions such as extracorporeal shock wave lithotripsy or percutaneous nephrolithotomy may be performed.

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What should I do if I still have pain after receiving a painkiller injection for gallstones?

Gallstones are solid crystalline formations that develop in the gallbladder or bile ducts and may cause symptoms such as biliary colic. When the pain is severe, analgesic injections may be required to relieve discomfort. If the pain does not respond to analgesic injections, the cause of the pain might not be related to gallstones. In such cases, a reassessment of the underlying cause is necessary to determine whether alternative treatments are needed.

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Can gout patients receive pain-relieving injections?

In general, patients with gout can receive pain-relieving injections. During a gout attack, patients may experience severe joint pain, swelling, redness, and other symptoms that are often unbearable. Under the guidance of a physician, they may be treated with injections such as dexamethasone acetate injection or diclofenac sodium injection. These pain-relieving injections have anti-inflammatory and analgesic effects.

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Is it okay to administer a pain-relieving injection for kidney stones?

If kidney stones cause severe pain, pain-relieving injections can generally be administered as directed by a physician. However, if the cause of the pain is unclear or the condition of the stone is mild, pain-relieving injections are usually not recommended. When intense pain is caused by kidney stones, a pain-relieving injection is an effective method for alleviating discomfort. In such cases, the injection can help reduce the patient's pain and improve their quality of life.

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Does getting pain relief injections during childbirth harm a pregnant woman's body?

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