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Plasma drug concentration pediatric patients

The plasma clearance of theophylline varies widely. Theophylline is metabolized by the liver, so usual doses may lead to toxic concentrations of the drug in patients with liver disease. Conversely, clearance may be increased through the induction of hepatic enzymes by cigarette smoking or by changes in diet. In normal adults, the mean plasma clearance is 0.69 mL/kg/min. Children clear theophylline faster than adults (1-1.5 mL/kg/min). Neonates and young infants have the slowest clearance (see Chapter 60 Special Aspects of Perinatal Pediatric Pharmacology). Even when maintenance doses are altered to correct for the above factors, plasma concentrations vary widely. [Pg.476]


See other pages where Plasma drug concentration pediatric patients is mentioned: [Pg.11]    [Pg.355]    [Pg.181]    [Pg.50]    [Pg.320]    [Pg.853]    [Pg.1172]    [Pg.258]    [Pg.1627]    [Pg.769]   
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