Practice Q Flashcards
What is local anaesthetics cellular mechanism of action?
Inhibits sodium getting into cell
Some disadvantages of local anaesthetics?
Hypotension & arrhythmias
Anaesthetics are usually fat soluble meaning they can..
Cross the blood brain barrier
What are the disadvantages of Ketamine?
High BP
What are the disadvantages f Thiopental?
Rapid awakening and long lasting sedation
Cell Membrane
Likely target for a drug to act on
Which drug binds to an enzyme to cause its actions?
Aspirin
Agonist
Binds to a receptor and causes a response
Glyceryl Trinitrate
Via spray
Via transdermal patch
Sublingually
Consider the oral administration of drugs:
The drug should be largely lipid soluble
Phase 1 Reactions:
Products can be more chemically active the parent drug
If a patient has cirrhosis of the liver
The plasma half-life will increase
Facilitated Diffusion:
Can become saturated
Inhibitory Neurotransmitter in the brain
GABA
Gylcine
Hypothroidism:
Can be caused by iodine deficiency
Glucocorticoids
Must be withdrawn gradually
Contraceptive Pill
Interacts with some hepatic enzyme inducers
Fibrinolytic drugs
Are used to treat cardiovascular thrombosis
Which drug interferes with the COX enzyme?
Aspirin
Heparin
Inhibits action of thrombin, Factors X & IX
Calcium Channel Blockers work by..
Reducing the force of contraction of the heart
Captopril blocks the formation of..
Angiotensin 2
Technique to diagnose a cardiac dysrhythmias..
ECG
Salbutamol acts on..
B-receptors
Preventers..
Baclomesasone
Sodium cromoglicate
Monteluskast
Relievers..
Salbutamol
Salmeterol
Ipratropium
Theohyiline
Cotransporter on the ascending limb of the loop of Henle..
Bumetanide
Example of potassium sparing diuretic
Sprironolactone
Diuretics
May cause postural hypotension
May be used to treat acute diarrhoea
Opioid derivatives
Antacids
Relive dyspepsia
Can cause respiratory depression..
MORPHINE
Nociceptors
Are sensitive to the chemical substance released by damaged cells or tissues
What causes the symptoms of hyperthyroidism?
Cardiovascular system and CNS are depressed metabolism rate increases.
What is a goitre?
Abnormal swelling of the thyroid gland causing a lump to form
What causes hyperthyroidism?
Graves Disease,
Activation of TSH by antibodies
Long term treatment for hyperthyroidism
Surgery
Radioactive Iodine
How is Carbimazole is excreted?
URINE
A drug that inhibits the synthesis of thyroxin and is the treatment for hyperthyroidism.
Converted into ACTIVE drug in the liver
Carbimazole
What causes hypothyroidism
Not enough Iodine in diet causing insufficient T3/T4 (thyroid hormones) causing patient to need thyroxin substitute
Severe Hypothryoidism
IV Triirothyronine T3