Exam 3 Pediatrics part 2 Flashcards
Herbal Remedies are associated with:
CV instability
Coagulation Disturbance
Prolonged Anesthesia
Immunosuppression
Which herbal supplements can prolong bleeding?
Garlic, Ginsing, Ginko Biloba (3Gs) and Feverfew (FG3?)
St. Johns Wort can do what?
Decrease Effectiveness of Drugs Metabolized by CYP3A4
Which Herbal supplement messes with immunosuppression?
Echinacea
Which herbal supplements POTENTIATES Sedative Effects of Anesthetic Agents?
Valerian Root and Kava
Pt has fever >38.4C, malaise, productive cough, wheezing, rhonchi and is scheduled for a non-emergent elective surgery. How would you proceed?
Postpone case 4-6 weeks
Pt has mild symptoms, nonproductive cough, sneezing and nasal congestion. Plans for nonemergent surg. How do you proceed.
Reginal or GA with mask can proceed.
Need ETT? - Wait 2-4 weeks
What drugs can help reduce airway secretions and hyperreactivity?
Anticholinergics and Beta Agonist
Check Hgb with these:
Risk of Potential for blood loss
Risk of Hemoglobinopathy
Former preterm infants and those <6mos old
Pediatric Considerations that effect PK/PD \_\_\_\_\_\_\_\_\_\_\_ composition \_\_\_\_\_\_\_\_ of metabolic degradation pathways \_\_\_\_\_\_\_\_\_ protein binding, Immaturity of \_\_\_\_\_\_\_\_barrier Greater blood flow to \_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_ in GFR \_\_\_\_\_\_\_ FRC \_\_\_\_\_ MV Immature receptor responses
Pediatric Considerations that effect PK/PD Total body water (TBW) composition Immaturity of metabolic degradation pathways Reduced protein binding, Immaturity of blood-brain barrier Greater blood flow to vessel-rich organs Reductions in GFR Smaller FRC ↑ MV Immature receptor responses
Total Body Water % for Preterm, Full-term, and Adult
90%, 80%, 60%
Extracellular Fluid % for Preterm, Full-term, and Adult
50%, 40%, 20%
Intracellular Fluid % for Preterm, Full-term, and Adult
40%, 40%, 40%
Fat % by Weight for Preterm, Full-term, and Adult
3%, 12%, 18%
Muscle Mass % by Weight
15%, 20%, 50%
How to calculate Volume of Distribution
Divide dose of administered drug by plasma concentration.
Infants have a _____ Extracellular fluid and _____ TBW. This leads to _____ plasma concentration of water soluble drugs and _____ plasma concentration of lipid soluble drugs.
Larger, greater
lower plasma concentration (diluted) H2O-soluble drugs – higher dose; lipid-soluble has higher plasma concentration due to decreased fat & muscle
Infants will need a _____ dose of water soluble drug
Higher
Infants will need a ____ dose of lipid soluble drug
Lower
Infants have ______plasma proteins, which means
Reduced plasma proteins, so more free drug available
Proteins reach adult equivalence by ______
5-6 months
Protein binding is fully functional by _______
1 year old
What are Phase 1 reactions
3 enzyme reactions catalyzed by P450 System
Hydrolysis
Oxidative
Reduction
What are Phase 2 Reactions
Conjugation- couples drug with substrate for excretion