CONDITIONS THAT IMPACT PK/PD TERMS B Flashcards
name this medication for the elderly?
increased sensitivity to sedation an psychomotor impairment
benzodiazepine
name this medication for the elderly?
increased confusion, urinary retention, and constipation
anticholinergics
name this medication for the elderly?
increased sedation, cognitive impairment, constipation-increased risk of respiratory depression/overdose
opioids
name this medication for the elderly?
greater effect on R
beta-blocker
toxicity which causes structural or functional defects in the developing fetus/embryo
name an example?
teratogenesis
thalidomide
based on all available data will the drug increase the risk of developmental abnormalities in humans
fetal risk summary
information on predictable risk of inadvertent or intentional exposure to the fetus or pregnant women
clinical considerations
preterm infants, low muscle mass=low perfusion
variable with age
absorption at site of administration
enzyme activities tend to be lower in newborn than in the adult
gastric emptying slower in neonates
gastric pH 6-8 in neonates
GI function
total body water is 87% preterm, 75% full term, 55% adult
1% fat (preterm) vs 15% (full term)
less albumin in neonates
distribution
neonate metabolism much lower in early life
approaches adult values by 6 months
toddlers (12-36 mo), metabolism exceeds that of adults
-may need higher dosage than adults (mg/kg)
metabolism
GFR is much lower in newborns than older infants
2-4 mL/min at birth
elimination
this equation is the gold standard that estimates creatinine clearance used for drug dosing
Cockcroft-gault
creatinine clearance in children with or without chronic kidney disease
Schwartz equation
this is the score used to estimate hepatic function in patient with cirrhosis
child-pugh score