Anti-emetics

Thehaine stands at the other end of the series from morphine and is a convulsant poison rather than a narcotic (see table, p. 261). Hildebrandt states that it excites the reflexes of cold-blooded animals but in dogs it exerts a narcotic and anti-emetic effect resembling that of morphine rather than that of chloromorphide. The alkaloid is scarcely used in medicine as such, but is a primary material for the preparation of certain of the modern morphine derivatives, such as hydroxydihj dro-codeinone and methyldihydromorphinor.e. 

Define the terms nausea, vomiting, anti emetic, and antivertigo. 

Use the nursing process when administering an anti emetic or antivertigo drug. 

Gnger Zingiber Anti emetic, cardiotonic, Excessive doses may Theoretically, ginger could... 

ATC A03FA06 A04AD Use anti-emetic, specific antagonist of peripheral and central dopamine receptors, reversible MAO-inhibitor... 

ATC D04AA32 R06AA02 Use antihistaminic, anti-emetic, sedative, antitussive... 

Emesis No distinct pathway DA receptors in chemoreceptor pathway zone Vomiting Anti-emetic (not motion sickness) D2 ... 

DA antagonists are anti-emetic, elevate plasma prolactin and have major motor and behavioural effects. Thus DA must be involved in the initiation of vomiting, the secretion of prolactin and control of motor and behavioural activity. Its role in emesis and as the prolactin release inhibitory factor have been adequately covered above. Its motor and behavioural function will now be considered. 

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