Pharmacology And Anesthesiology Flashcards
Concerned with the effects of the drugs and the mechanism of acrion
Pharmacodynamics
Concerned with the movement of drugs within the body
Pharmakokinetics
Study of drugs’ harmful effect
Toxicology
Prevents orally taken drugs toxicity
Activated charcoal
Induces vomiting
Syrup of ipecac
It is the accumulation of drugs that cant be eliminated un the body
Cumulatiom
Drugs cotnraindicated for glaucoma
Diazepam, anti cholinergic
What is the most allergenic drug
Penecillin
Group of drugs Safe for pregnancy
Local anes, analgesics and sedative hypnotics
Study of damage to fetus during development
Teratology
Study of drug dosage
Posology
Most comkom and the easiest to administer
Oral route
Suppositories and enema
Rectal route
Routenin which bypasses the membrane
Parenteral route
Intravenous angulation
35-40 degrees
Intramuscular injection angulation
90 degrees
Intradermal injections angulation
0-15 degrees
Subcutaneous injection angulation
45 degrees
Intrathecal injection
Between 3rd and 4th lumbar vertebrae
Fastest route in which the target site is the brain
Inhalation
In terms of ph levels drugs must be..
Weak acids and weak bases
Amount of drug that teaches the circulatory system after administration
Bioabavailability
Bioavailability is influenced by
Drug solubility, route and first pass effect
According to solubility drugs must be..
Slightly hydrophilic and largely hydrophobic
Very hydrophilic drugs are..
Unable to cross the phospholipid bilayer
Drugs that are purely hydrophobic are most likely..
Unable to be absorbed due to insolubility in aquaeus fluids
Ability of drug to move from circulatory system into the target sites
Distribution
Free floating drug
Free ionized drug
Drugs bound to plasma protein
Bound drugs
Tendency of substanves to separate or dissociate from its bindig
Dissociation constant
Liver enzymes which helos in drug and compound metabolism
Miscromomal enzymes
Non microsomal enzymes
Example of micromal enzymes in liver
Cytrochrome P450
Drugs metabolized in liver are
Amide local anesthetics
Most drugs
Plasma enzyme
Plasma Pseudochokinesterase
Drugs metabolised in plasma
Ester Local Anesthetics
Succinylcholine
Major organ for excretion of drugs
Kidney
Site of excression for nitrous oxide
Lungs
Drugs excreted in breast milk
Alchohol, cafffeine, cocaine and nicotine
The time required for a drig to reduce half of its initial value
Half life
Rate at which the active drug is removed from the body
Clearance
Amount of drugs eliminated is constant and is not dependent on the concentration of drug plasma
Zero order kinetics
Drugs with zero order kinetics
Alchohol, phenytion, aspirin
Amount of drug eliminated is dependent on tje concentration of drug in plasma fluid
First order kinetics
Dosage of drugs needed to produce an effect
Potency
Refers to the effect of the drug
Efficacy
Maximum effect of drug where no effect is added even though drug dose is increased
Maximal effect
Refers to how well the drug can be used in the real world
Effectiveness
Dose response curve thay describes the degree of respons eof a single biological unit to a given drug dose
Graded Dose-effect curve
Curve that describes relationship between the increasing drug dosage and the percentage of the population that shows the drugs pharmacologic and lethal effects
Quantal Dose-effect curve
Detects the margin of safety of a drug by conparing the therapeutic and toxic dose
Qunatal-dose effect curve
Targets of drug action
Receptors
Enzymes
Ability of drugs to bund to its target site
Affinity
Ability of drug to produce an effecr after bindingnto its target site
Intrinsic activity
Results in decreased potency and competes with the receptor
Competitive antagonism
Has its own receptor and doesnt compete. It results to a decrease in efficacy
Non-competitive antagonism
Naloxone is an antagonist of what drug
Narcotics
Flumazenil is an antagonist of what drug?
Benzodiazepine
Intrinsic activity of 1
Full agonists
Intrinsic activity of 0
Antagonist
Intrinsic acrivity of >0 and <1
Partial Agonist
Drug effect is proportional tot he number of receptors occupied
Clarks occupational theory
Drug effect is proportional to the rate at which the drug and receptor combine; drug produces an effect when bound to ita receptor
Patons rate theory
Sedative hypnotivs are drugs used for
Sedation
Hypnosis
Muscle relaxation
Types of sedation
Minimal
Moderate
Deep
Awake and relaxed; rrlieve anxiety
Minimal or conscious sedation
Classification of sedative hypnotic drugs
Barbiturates and non barbiturates
4 classes of barbiturates
Ultra short acting
Short acting
Intermediate acting
Long acting
Used for induction of general anesthesia
Ultra short acting barbiturates
Barbiturates that are ultra short acting
Thiopental and methohexital
Classes of barbiturates used for insomnia
Short acting and intermediate acting barbiturates
Short acting barbiturates
Secobarbital
Pentobarbital
Intermediate barbiturates
Amobarbital
Butabarbital
Class of barbiturate used for epileptic seizures
Long acting Barbiturates
Long acting barbiturates
Phenobarbital
Mephobarbital
Primidone
Non barbiturate drug used as sedative drugs in Pediatrics
Chloral hydrate
Non barbiturate drug for insomnia
Flurazepam
Sedative found in alchohol beverages
Ethanol
An antihestamine sedative
Diphenhydramime
Anticonvulsant drugs are used for
Anti-Epileptic
Anti anxiety
Sedation
Absence of consciouness; absence of movements for few seconds
Absence seizures
Petit mal
Absence seizures
Awake; muscles are jerking for few seconds to a few minutes
Myoclonic
Awake; muscle relaxation for few seconds to few minutes
Atonic
Drop seizure
Atonic
Unconscious; muscle stiffness; jerking movements few minutes
Tonic clonic seizures
Grand mal
Tonic clonic seizures
Repeated grand mal or 30 min seizure
Status epilepticus
Common drugs used as anticonvulsants
Benzodiazepin Pgenytoin Carbamazepin Valproic acid Barbiturates (least used)
Blocks sodium ions
Carbamazepine
Blocks sodium and calcoum ions
Valproic acid
Potentiates GABA receptors and inhibitory neurotransmitters
Anticonvulsants
Affects Reticular Activating sustem and activates Gaba receptors
Sedative hypnotics
Stimulates porphyrin production
Sedative hypnotics
Drug induced gingival hyperplasia
Anticonvulsants
Paradoxical Excitement
Anticonvulsants
Diazepam is slowly and poorly absorbed in what route of administration
Intramuscular
Drugs with slight anticholinergic effects
Diphenhydramide Tricyclic antidepressants Benzodiazepine Antipsychotics Meperidine
Drugs with morphime like properties that acts in CNS
Narcotic drugs
Other name for narcotics
Opiods or opiates
Opiod receptors in the body
Limbic system
Area postrema
Sokitary nuclei
Substantia gelatinosa of Rolando
Area in the medulla pblongata responsible for nausea and vomiting
Area postrema
Area in medulla oblongata for gag reflex, cough, baroreceptor reflex and chemoreceptor
Solitary nuclei
Gate in gate control theory
Substantia gelatinosa of rolando
Endogenous opiods in our body
Endorphine
Enkeohaline
Serotonine
Combination of dIphenoxylate and atropine
Lomotil
Most comkon side effect for narcotic drugs
Nausea
Most serious side effect for narcotic drugs
Respiratory depression
Morphine triad
Miosis
Respiratory depression
Coma
Components of neuroleptic analgesia
Narcotics
Neuroleptic analgesia
Drigs that causes dissociative anesthesia
Ketamine
Phencyclidine
Narcotic drug contraindicared for glaucoma
Meperidine
Narcotic drugs that can be administered orally
Codeine
Oxycodone
Methadone
Tylox
Oxycodone
Acetaminophen
Narcotic drug for parenteral administration
Morphine
Meperidine
More potent than morphine
Fentanyl
Diacetylmorphine
Heroin
Demerol; has anticholinergic effects
Meperidine
Guedels stages of anesthesia for analgesia and amnesia
Stage 1
Guedels stages of anesthesia for surgical anesthesia
Stage 3
Guedels stages of anesthesia for medullary paralysis
Stage 4
Guedels stages of anesthesia for excitement and delirium
Stage 2
Inhalation drugs used for General anesthesia
Halothane
Desflurane
Benzodiazepines used for induction of general anesthesia
Midazolam
Diazepam
Lorazepam
Short acting hypnotic agent
Propofol
Blocks pain mainly in the Peripheral nervous system
Non-narcotic Analgesics
Pain, fever, inflammation and gasteic protection
Prostaglandin
Two pathways for arachidonic acid
Lipooxygenase
Cyclooxygenase
Catalizes the phospholipid bilayer in producing arachidonic acid
Phospholipase a2
Cox1
Thromboxane a2 (platelets) Prostaglandin for stomach
Cox2
Prostaglandin for pain, fever and inflammation (endothelial tissue)
Prostacyclin for vasodilation (Endothelial tissue)