Therapeutic Drug Monitoring Flashcards
What is the place known as that a drug targets in the body?
Site of Action
What does the Therapeutic range represent?
The relationship between Minimum Effective Concentration (MEC) and Minimum Toxic Concentration (MTC)
What do we want to give our next dose to the patient?
During a trough or low point
What is the highest concentration achieved during a dosing cycle?
Peak Concentration
What is the equilibrium of rate of drug administration and elimination known as?
Steady State
How long does it take to reach a Steady State?
5 doses
What is the term for what the body does to the drug?
Pharmacokinetics
What is the term for what the drug does to the body?
Pharmacodynamics
What are the key processes of drug disposition?
Absorption
Distribution
Metabolism
Excretion
What is the most direct route for administering a drug?
Intravenous Delivery (IV)
What is the most common route for delivering a drug?
Oral Administration
What is Bioavailability?
Amount of drug absorbed relative to the quantity given
Where are drugs absorbed from the small intestine transported to?
Liver by the portal vein
Where do drugs go once in the bloodstream?
Some stay in the plasma
Others go to tissue
What does Distribution patters of a drug depend on?
Molecular size
Degree of Ionization
Lipid Solubility
Extent of Protein Binding
Body Composition
What is the free fraction of drug considered as?
Active Component
Why are metabolites easily excreted by the kidney or the liver?
They are usually more polar and water soluble
What are the major routes of excretion?
Kidney into urine
Liver into bile and feces
What are other pathways of excretion of metabolites?
Skin
Lungs
Mammary Glands
Salivary Glands
How does a TDM program improve quality of life?
Optimizing Dose
Supporting Compliance
Minimizing Toxicity
What is baseline therapeutic concentration used over time for?
Assess compliance
Address changes
Maintain optimal dosing
What are the categories of TDM drugs?
Antiepileptic
Antimicrobial
Antineoplastic
Cardioactive
Psychoactive
Bronchodilators
What are some prevalent Neurologic disorders?
Epilepsy
Convulsions
Seizures
What are some common Antiepileptic drugs?
Phenobarbital
Phenytoin
Valproic Acid