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Opiate overdose symptoms and signs can be referred to as the "opioid toxidrome triad": decreased level of consciousness, pinpoint pupils and respiratory depression. Other symptoms include seizures and muscle spasms. Sometimes an opiate overdose can lead to such a decreased level of consciousness such that the person will not wake up.
The symptoms can often be divided into differing toxidromes. This can help one determine what class of drug or toxin is causing the difficulties. Symptoms of opioid overdoses include slow breathing, heart rate and pulse. [6] Opioid overdoses can also cause pinpoint pupils, and blue lips and nails due to low levels of oxygen in the blood.
These include the severity of withdrawal symptoms, the time elapsed since the last opioid use, and the type of opioid involved (long-acting vs. short-acting). [132] A standard induction method involves waiting until the patient exhibits moderate withdrawal symptoms, as measured by a Clinical Opiate Withdrawal Scale, achieving a score of around 12.
Nerves involved in the resizing of the pupil connect to the pretectal nucleus of the high midbrain, bypassing the lateral geniculate nucleus and the primary visual cortex. From the pretectal nucleus neurons send axons to neurons of the Edinger-Westphal nucleus whose visceromotor axons run along both the left and right oculomotor nerves .
“The brain changes, and it doesn’t recover when you just stop the drug because the brain has been actually changed,” Kreek explained. “The brain may get OK with time in some persons. But it’s hard to find a person who has completely normal brain function after a long cycle of opiate addiction, not without specific medication treatment.”
When death occurs, it is most commonly due to respiratory failure due to paralysis of respiratory muscles and depression of central nervous system, which is responsible for respiration. For people affected by cholinergic syndrome, atropine sulfate combined with an oxime is used to combat the effects of the acute OP poisoning.
Due to the difference in lipophilicity and mode of release between opioid analgesics, the severity, and duration of withdrawal symptoms may differ. The followings are the general descriptions of duration of opioid withdrawal symptoms: [8] High intake for a long duration (> 6 Months) is associated with a more severe level of withdrawal symptoms.
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