Pharmacology Flashcards
Which medications are contraindicated in a patient with gout?
Thiazide diuretics
When prescribing an ACE or and ARB what baseline labs should be checked?
serum potassium and serum creatinine should be monitored at baseline, within the first month, and periodically, especially in the elderly, diabetics, and those with chronic kidney disease
The herb feverfew is used for what conditions?
migraine, irregular menstrual periods, tinnitus
Pharmacology
The study of the interaction between the body and drugs.
Pharmacokinetics
The movement of drugs through the body (absorption, bioavailability, distribution, metabolism, and excretion
Pharmacodynamics
The study of the physiologic and biochemical effects of drugs (what a drug does to the body).
Pharmacogenomics
The study of how a person’s genes affect response to medications
Area under the curve
a measure of the bioavailability of a drug after it is administered.
Inducers
Speed up drug metabolism
Inhibitors
Slow down drug metabolism
Age related body changes that affect medication
- Increase in fat-to-water ratio
- Decrease in albumin and plasma proteins
- Decrease in liver blood flow and size
- Decrease in some CYP450 enzyme pathways (decreased drug clearance)
- Decrease in glomerular filtration rate (GFR)
Potent inhibitors
- Macrolides (erythromycin, clarithromycin, telithromycin)
- Antifungals (ketoconazole, fluconazole, itraconazole)
- Cimetidine (Tagamet)
- Citalopram (Celexa)
- Protease inhibitors (saquinavir, indinavir, nelfinavir)
- Antipsychotics (clozapine, olanzapine, quetiapine)
- grapefruit juice affects the CYP450 system.
Monitoring for lithium
blood levels and TSH (risk of hypothyroidism).
Monitoring for digoxin
Monitor digoxin level
EKG
electrolytes (potassium, magnesium, calcium
Drugs affected by kidney disease
NSAIDS
ACEi
Warfarin
Lithium
Contrast dye
Potassium-sparing diuretic
Fluoroquinolones black box warning
increased risk of tendinitis and acute tendon rupture, especially in patients older than 60 years and in those who are on steroid treatment or who have received an organ transplant
Which antibiotic should never be prescribed with wafarin?
Trimethoprim-sulfamethoxazole –> if needed closely monitor the patient’s INR
Topical steroid potentcy levels
Clobetasol (Temovate) is classified as a superpotent (group 1)
Halcinonide is classified as high potency (group 2)
Mometasone furoate is high/medium potency (group 3),
Desonide gel is considered medium/low potency (group 5).
Adverse effects of calcium channel blockers
Constipation
First line treatment for gonorrhea
ceftriaxone
First line treatment for MRSA
Bactrim
First line treatment for MRSA with a sulfa allergy
Clarithromycin
What medication is first line for Atrial flutter?
Non-dihydropyridine CCBs
Diltiazem
What medication is used to treat a genital herpes simplex virus (HSV) infection?
Valcyclovir