Midterm Exam Flashcards
Chloramphenicol caused
gray baby syndrome
thalidomide caused
phocomelia
sulfonamides caused
kernicterus
Geriatric PK considerations
Decreased muscle mass and increased total body fat increasing distribution of lipophilic drugs
Fried’s rule infant < 2
month/150 x adult dose
Modified weight rule infant > 2
wt(kg)/50 kg x adult dose
Young’s rule infant > 2
[age/(age +12)] x adult dose
Body weight dosing
Most commonly used calculation
Body surface area dosing
Most accurate calculation
Neonatal gastric emptying
peristalsis may be absent up to 1st four days of life
Neonatal gastric emptying rate factors
Decreased: CHD, GERD, high caloric feeds, RDS
Increased: Human milk
Infant gastric pH
Neutral at birth
Acidic (pH 1-3) in 24 h
Neutral (pH 6-8) in 1 wk
Acidic through childhood
Why is IM not preferred for infants?
Less muscle mass, erratic peripheral perfusion, decreased muscular contraction
What vitamin is given IM at birth?
Vitamin K
Why is topical route not preferred for infants?
Increased skin absorption because of undeveloped epidermal layer