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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 symptoms of an opiate toxidrome include the classic triad of coma, pinpoint pupils and respiratory depression [3] as well as altered mental states, shock, pulmonary edema and unresponsiveness. Complications include bradycardia, hypotension and hypothermia. Substances that may cause this toxidrome are opioids.
Pinpoint pupils, or miosis, caused by opioids. Because of their effect on the part of the brain that regulates breathing, opioids can cause very slow or stopped breathing, during overdoses, leading to hypoxia [16] or death if left untreated. [1] Hypoxia is typically caused by respiratory depression.
Experts share how to discuss drugs with kids, including the risk of taking pills or gummies from a friend. ... Saucier points to symptoms like somnolence or lethargy, pinpoint pupils and slow ...
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.
Other symptoms include increased sweating, salivation, bronchial secretions along with miosis (constricted pupils). This crisis may be masked by the concomitant use of atropine along with cholinesterase inhibitor medication in order to prevent side effects.
Other symptoms to note: Drug rashes can be a side effect of or a reaction to a new medication; almost any medication can cause a drug rash, but antibiotics and NSAIDs are the most common culprits ...
Dilation and constriction of the pupil. Pupillary response is a physiological response that varies the size of the pupil, via the optic and oculomotor cranial nerve.. A constriction response (), [1] is the narrowing of the pupil, which may be caused by scleral buckles or drugs such as opiates/opioids or anti-hypertension medications.