Before exam Flashcards
What are the types of adverse drug reaction
A
- Common
- unlikely to be fatal
B
- Rare
- likely to be fatal
C
- related to cumulative dose
- time related
D
- delayed
- usually dose related
- occurs or becomes apparent some time after use of drugs
E
- happens when you suddenly stop taking the drug
F
- failure
- drug interactions leads to failure
ADRs are common in
- more than 10% of patients
ADRs that are uncommon occur in
- more than 0.1% but less than 1% of patients
ADRs that are rare occur in
- more than 0.01% but less than 0.1% of patients
ADRs that are very rare occur in
- less than 0.01% of patients
What is the volume of distribution ratio
Vd = total amount of drug in the body/ plasma drug concentration
What drugs have a higher and low Volume Distribution
- Drugs which are highly water soluble (gentamicin, atenolol and insulin_ or extensively protein bound( e.g. warfarin) have a relatively low Vd since they stay in the plasma
- Drugs which are highly lipid soluble (e.g. digoxin, morphine, and diazepam) have a larger volume distribution since these drugs go out of plasma into tissues and organs
What is first order elimination
- this is when half life is independent of drug concentration
What is zero order elimination
- when the enzyme is saturated only a fixed amount per hour is removed from the body
name the sum of total body clearance
CL=CLh +CLr
- total body clearance is the sum of the individual clearances for each elimination tissue or organ (renal and hepatic)
what is the elimination rate constant (K)
- K= Cl/Vd
- the greater the fraction of drug removed in unit time the shorter the half life, thereofre half life varies inversely with elimination rate cnstant
What are unlicensed preparations
this is when there is a need to use a medicine that doesn’t have a product authorisation in the UK
What are the three categories of unlicensed preparations
- the medicine is produced and licensed in another country and imported
- the medicine is unlicensed and produced in a licensed manufacturing unit in this country
- the medicine is unlicensed and produced in an unlicensed manufacturing facility such as a pharmacy department
How do you know if a person can make a specific decision
- understand information about the decision to be made
- be able to retain that information
- be able to use that information to make their decision
- be able to communicate that decision back to you
what drugs can induce nephrotoxicity
- aminoglycosides
- amphotericin
- cytotoxic chemotherapy
- diuretics
- immunosuppressants
- lithium salts
- NSAIDs/COX-2 inhibitors
- radiocontrast media
Who should ACE/ARB inhibitors be offered to patients with CKD and..
- diabetes mellitus and an ACR of 3 mg/mmol or more (ACR A2 or A3)
- Hypertension and an ACE or 30 mg/mmol or more (ACE A3).
- an ACR of 70 mg/mmol or more, irrespective of whether the patient is hypertensive or has cardiovascular disease
what level of potassium concentration should be treated straight away
- Treat hyperkalaemia urgently if the serum potassium concentration reaches 6.5 mmol/k
How many
- Grams in a Kg
- how many mg in a g
- how many micrograms in an mg
- how many nanograms in a microgram
- 1Kg = 1000g
- 1g = 1000mg (milligrams)
- 1mg = 1000 micrograms
- 1 microgram = 1000 nanograms
What is % w/v
- this represents percentage weight per volume
- this is used when a defined weight of a medicine (or chemical) is added to a volume of diluent
- in a 1% w/v solution there is 1g of drug in 100ml of the final product
TH1 cytokines
IL-12 causes proliferation into TH1
TH1 produces - IL-2, Interferon gamma, TNF alpha
TH2 cytokines
IL-4 causes proliferation into TH2
TH2 produces - IL-4, IL-5, IL-13
What antibody test is used in pernicious anaemia
Anti intrinsic factor antibodies
What do the blood results of GP6D show
Heniz bodies
Bite and blister cells
What is the difference between sequestration and aplastic anaemia in sickle cell disease
Sudden fall in haemoglobin and reduced reticulocyte is indicative of aplastic crisis whereas sequstration has raised reticulocytes