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NUR 635 - Midterm Exam Study Guide.Latest Updates 2023 GCU NUR-635 Mid-Term Study Guide – Dr. Don Marsh - Pharmacology (from the Greek word ‘pharmakon,’meaning drug): the study of drugs and their structure, targets of action, mechanisms of action (MOA), distribution (how the body disburses them throughout the body), desired physiologic effects (efficacy) and undesirable side effects (toxicity). - Pharmacokinetics includes ADME (absorption, distribution, metabolism and elimination). - Absorption: absorption from the administration site either directly or indirectly into the blood/plasma. - Distribution: reversibly/irreversibly movement of drug from the bloodstream into the interstitial and intracellular fluid. - Metabolism: drug biotransformation via metabolic pathways, primarily the liver, or by other tissues. - Elimination: how parent drug & its metabolites are eliminated from the body Absorption Factors: - Gastrointestinal pH changes - Gastric emptying - Gastric/intestinal enzymes - Bile acids & biliary function - Gastrointestinal flora (type and quantity of bacteria) - Food & nutrient interactions (most common interaction influencing GI drug absorption) - Lipid solubility of the drug Distribution: - Membrane permeability: Cross membranes to site of action - Blood brain barrier reduces the speed of drug passage into and out of brain tissue - Plasma protein binding: drugs bound to plasma proteins do not cross membranes (Note: Malnutrition = albumin = free drug = greater pharmacologic response) - Aging cause a reduction in production of plasma proteins - Lipophilicity of drug: lipophilic drugs concentrate in adipose tissue; remain in the body for a longer period of time

NUR 635 - Midterm Exam Study Guide.Latest Updates 2023  GCU NUR-635 Mid-Term Study Guide – Dr. Don Marsh  - Pharmacology (from the Greek word ‘pharmakon,’meaning drug): the study of drugs  and their structure, targets of action, mechanisms of action (MOA), distribution (how  the body disburses them throughout the body), desired physiologic effects (efficacy)  and undesirable side effects (toxicity).  - Pharmacokinetics includes ADME (absorption, distribution, metabolism and elimination). - Absorption: absorption from the administration site either directly or indirectly into  the blood/plasma. - Distribution: reversibly/irreversibly movement of drug from the bloodstream into the  interstitial and intracellular fluid. - Metabolism: drug biotransformation via metabolic pathways, primarily the liver, or by  other tissues. - Elimination: how parent drug & its metabolites are eliminated from the body Absorption Factors: - Gastrointestinal pH changes - Gastric emptying - Gastric/intestinal enzymes - Bile acids & biliary function - Gastrointestinal flora (type and quantity of bacteria) - Food & nutrient interactions (most common interaction influencing GI drug  absorption) - Lipid solubility of the drug Distribution: - Membrane permeability: Cross membranes to site of action - Blood brain barrier reduces the speed of drug passage into and out of brain tissue - Plasma protein binding: drugs bound to plasma proteins do not cross  membranes (Note: Malnutrition = albumin = free drug = greater pharmacologic  response) - Aging cause a reduction in production of plasma proteins - Lipophilicity of drug: lipophilic drugs concentrate in adipose tissue; remain in the body  for a longer period of time

NUR 635 - Midterm Exam Study Guide.Latest Updates 2023
GCU NUR-635 Mid-Term Study Guide – Dr. Don Marsh
- Pharmacology (from the Greek word ‘pharmakon,’meaning drug): the study of drugs
and their structure, targets of action, mechanisms of action (MOA), distribution (how
the body disburses them throughout the body), desired physiologic effects (efficacy)
and undesirable side effects (toxicity).
-
Pharmacokinetics includes ADME (absorption, distribution, metabolism and elimination).
- Absorption: absorption from the administration site either directly or indirectly into
the blood/plasma.
- Distribution: reversibly/irreversibly movement of drug from the bloodstream into the
interstitial and intracellular fluid.
- Metabolism: drug biotransformation via metabolic pathways, primarily the liver, or by
other tissues.
- Elimination: how parent drug & its metabolites are eliminated from the body
Absorption Factors:
- Gastrointestinal pH changes
- Gastric emptying
- Gastric/intestinal enzymes
- Bile acids & biliary function
- Gastrointestinal flora (type and quantity of bacteria)
- Food & nutrient interactions (most common interaction influencing GI drug
absorption)
- Lipid solubility of the drug Distribution:
- Membrane permeability: Cross membranes to site of action
- Blood brain barrier reduces the speed of drug passage into and out of brain tissue -
Plasma protein binding: drugs bound to plasma proteins do not cross
membranes (Note: Malnutrition = albumin = free drug = greater pharmacologic
response)
- Aging cause a reduction in production of plasma proteins
- Lipophilicity of drug: lipophilic drugs concentrate in adipose tissue; remain in the body
for a longer period of time

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