Mnemonics Flashcards
Inputs of vomiting centre
CHILL - Barf Prep
CTZ, higher cortical centres, GIT, labyrinth, limbic system, baroreceptors, peripheral pain pathways
Liver functions
BSC SMID
Biotransformation, synthetic, capacitance, storage, metabolic, immunological, digestive.
Hypoxia
HASH
Hypoxic, anaemic, stagnant, histotoxic
Osmolality and osmolarity
OsmoLality in the Lab but not in Litres
Osmolality = osmoles/kg of solvent (more accurate as not temperature dependent) Osmolarity = osmoles/L of solution
Describing a drug
Physicochemical: chemical structure, presentation, storage
Indications, contraindications, dose, toxicity
PD: mechanism, effects by system
PK: ADME
Mechanisms of heat loss
RCECR
Radiation (40%), convection (30), evaporation (15), conduction (10), respiration (5).
Layers of adrenal cortex
GFR ACT
Glomerulosa, fasciculata, reticularis (outer to inner)
Aldosterone (mineralocorticoids), cortisol (glucocorticoids), testosterone (androgens) respectively
Medulla makes NA and A from chromaffin cells
Catecholamine synthesis
Paternity: Long Live DNA
Phenylalanine, L-tyrosine, L-dopa, dopamine, NA, A
Roles of endothelium
V SCOF BID
Vasomotor tone, secretion (ACE) coagulation (damage –> exposure of tissue factor), osmosis, filtration, barrier, inflammation, diffusion
Types: continuous (BBB), discontinuous (sinusoids), fenestrated (glomeruli)
Risks of transfusion
RIM(ember): Transfusion Has Its Downsides
Reactions (haemolytic, febrile), infection (bacterial, viral, parasite, prion), metabolic (low Ca, high K, acidosis if liver failure), TRALI/TACO/GVHD, hypothermia, iron overload, depletion of platelets/clotting factors (5 and 8).
RBC storage solutions
ACCS
ACD, CPD, CAPD, SAGM (in order of increasing RBC survival)
Coagulation: classical and cell based
XTF (“Cross the line To Finish”)
X to Xa, prothrombin to thrombin, fibrinogen to fibrin –> clot
Cell based: initiation, amplification, propagation
Oral hypoglycaemics
Big Tall Sugar Daddy Mega Increased Adiposity
Increase insulin sensitivity
- Biguanides (metformin)
- Thiazolidinediones (pioglitazone)
Increase insulin secretion
- Sulphonylureas (gliclazide)
- Dipeptidyl peptidase IV inhibitors (sitagliptin)
- Meglitinides (repaglinide)
- Incretin mimetics (exenatide)
Other
- Alpha glucosidase inhibitors (acarbose) - reduce carbohydrate absorption
Mechanisms of drug action
RENT-a-HIP
Receptors, enzymes, neurotransmitters, transport systems, hormones, ion channels, physicochemical.
Factors influencing drug absorption (and passage across placenta)
CLIPPR-M
Concentration gradient (Fick’s law), lipid solubility, ionisation and pKa, protein binding, route of administration, molecular weight (Graham’s law).
Extra factors for placenta:
- pH maternal blood and fetal blood (more acidotic fetus means more basic drugs will cross e.g. opioids and LAs –> ion trapping)
- placental blood flow
Also thickness of membrane and surface area.