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Anticholinergic overdose, both antinicotinic and antimuscarinic, can exert toxic effects on both central and peripheral systems. The following symptoms could be presented: [21] [22] Mydriasis. Mild symptoms include tachycardia, flushed face, mydriasis and blurred vision, fever, dry mouth
produce mydriasis and cycloplegia in diagnostics [5] may cause ocular hypertension [5] Short acting, CD [5] Diphenhydramine: NS: for EPS from typical and atypical antipsychotic medications; antihistamine; sleep aid; PD; management of asthma symptoms; sedation; dry mouth; constipation; UR; Acts in the central nervous system, blood vessels and ...
Mydriasis can be induced via modulation of adrenergic or cholinergic signalling. Drugs that can cause mydriasis include: Stimulants (typically monoaminergics) such as amphetamines, cocaine, MDMA, and mephedrone. Anticholinergics such as diphenhydramine, atropine, hyoscyamine, and scopolamine antagonize the muscarinic acetylcholine receptors in
Anticholinergics (anticholinergic agents) are substances that block the action of the acetylcholine (ACh) neurotransmitter at synapses in the central and peripheral nervous system. [ 1 ] [ 2 ] These agents inhibit the parasympathetic nervous system by selectively blocking the binding of ACh to its receptor in nerve cells .
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.
Most drugs with parasympatholytic properties are anticholinergics. Parasympatholytic agents and sympathomimetic agents have similar effects to each other, although some differences between the two groups can be observed. For example, both cause mydriasis, but parasympatholytics reduce accommodation (cycloplegia), whereas sympathomimetics do not.
"Given all the research evidence, physicians might want to consider alternatives to anticholinergic medications, if available, when working with older patients," a researcher told CNN.
[1] [2] Patients observe these symptoms and seek medical advice from healthcare professionals. Because most people are not diagnostically trained or knowledgeable, they typically describe their symptoms in layman's terms, rather than using specific medical terminology. This list is not exhaustive.