Subject: Basic Science Applied to Nursing
Promethazine is a phenothiazine antihistamine. Promethazine appears to act by blocking H; receptor sites, preventing the action of histamine on the cell. The sedative effect of promethazine may be due to the blockade of dopaminergic receptors in the medulla. Nausea and vomiting (hydrochloride): 12.5 to 25 mg every 4 hours (Maximum 100mg/24 hours) IM/IV. Children: 2 to 5 years 5 to 15 mg daily (po), 5 to 10 years 10-25 mg daily (po). Narrow-angle glaucoma, premature & term infants, pyloroduodenal obstruction, paralytic ileus, prostatic hypertrophy, bladder neck obstruction, epilepsy, bone marrow depression, Reye's syndrome, encephalopathy, hepatic diseases.
Promethazine is a phenothiazine antihistamine.
2 to 5 years 15 to 20 mg hs (po).
5 to 10 years 20 to 25 mg hs (po)
2 to 5 years 5 mg (po).
5 to 10 years 10 mg (po).
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