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Resultant plasma levels after subcutaneous (SC), intramuscular (IM), and IV injection are all comparable. After IM or SC injections, morphine plasma levels peak in approximately 20 min, and, after oral administration, levels peak in approximately 30 min. [81] Morphine is metabolised primarily in the liver and approximately 87% of a dose of ...
Sensory side effects include paresthesias, dysesthesias, numbness, altered proprioception, and loss of dexterity in fingers and toes. Motor and autonomic symptoms are less frequent but possible. Symptoms may start days after the patient receives their first dose of chemotherapy, are dose dependent, and tend to improve after completion of treatment.
Morphine is effective in relieving cancer pain, [38] although oxycodone shows superior tolerability and analgesic effect, though cost may limit its value in certain healthcare systems. [39] Side effects of nausea and constipation are rarely severe enough to warrant stopping of treatment. [38]
Depending on the person, the cancer, the stage of cancer, the type of chemotherapy, and the dosage, intravenous chemotherapy may be given on either an inpatient or an outpatient basis. For continuous, frequent or prolonged intravenous chemotherapy administration, various systems may be surgically inserted into the vasculature to maintain access.
Opioid-induced hyperalgesia (OIH) or opioid-induced abnormal pain sensitivity, also called paradoxical hyperalgesia, is an uncommon condition of generalized pain caused by the long-term use of high dosages of opioids [1] such as morphine, [2] oxycodone, [3] and methadone.
Common side effects include dizziness, sleepiness, nausea, itchiness, and constipation. [7] Serious side effects may include abuse, low blood pressure, seizures, respiratory depression, and serotonin syndrome. [7] Rapidly decreasing the dose may result in opioid withdrawal. [7] Generally, use during pregnancy or breastfeeding is not recommended ...
They both cause severe side effects, including severe pain that must be controlled with morphine, and a high risk of infusion reaction that must be controlled with antihistamines and anti-inflammatory drugs. They both work by binding to neurons and causing the body's immune system to destroy them.
Extended-release (or slow-release) formulations of morphine are those whose effect last substantially longer than bare morphine, availing for, e.g., one administration per day. Conversion between extended-release and immediate-release (or "regular") morphine is easier than conversion to or from an equianalgesic dose of another opioid with ...