Random stuff Flashcards
Which hepatitis types are faeco-oral spread rather than blood?
A+E
Which hepatitis is most likely to be asymptomatic?
C
Which hepatitis types have vaccines against them?
A and B
Hep A and B might cause what syndrome?
Immunological- rash, fever, polyarthritis, rarely glomerulonephritis
Rarely, hepatitis is caused by which viruses?
CMV, EBV, HSV
What can you give in Hep C to prevent it becoming chronic?
Interferon
Which types of hepatitis do not develop into chronic infection?
A and E
What is the treatment for uncomplicated hepatitis?
Symptomatic
What is a marker of acute Hep B infection
Surface antigen
What does an IgG core hep b antibody show?
Past infection
What does an IgM core hep b antibody show?
Acute infection
What is a marker of being vaccinated against hep b?
Surface antibody
What is a marker of being infectious with hep b?
HbeAg infectivity marker
Which drugs are metabolised by the p450 system?
Carbamezapine OCP Warfarin Phenytoin Theophyline
Which drugs induce the p450 system?
Carbamezapine Rifampicin Alcohol (chronic) Phenytoin Griseofulvin Phenobarbitone Sulphonylureas and St John's Wort
Which drugs inhibit the P450 system?
Sodium valproate Isoniazid Cimetidine Ketoconazole Fluconazole Alcohol (binge) Chloramphenicol Erythromycin Sulfonamides Ciprofloxacin Omeprazole Metronidazole, Miconazole Grapefruit and Cranberry juice Clarithromycin
What is isoniazid?
Antibiotic used for TB
What is cimetidine?
H2 antagonist (like ranitidine)
What is chloramphenicol?
Antibiotic eye drop
What are sulphonamides?
Antimicrobials that start with ‘sulf-‘
Diuretics that end in ‘-amide’/-‘emide’
Anticonvulsants
Antiretrovirals
What drugs do you give for secondary prevention following an MI?
Aspirin 75mg OD Clopidogrel 75mg OD Beta blocker – Bisoprolol 10mg OD ACE Inhibitor – Ramipril 10mg OD Statin – Atorvastatin 80mg OD
What is a side effect of amlodipine?
Swollen ankles
Where in the body are lipophilic drugs distributed?
Whole body
Where in the body are hydrophilic drugs distributed?
Stay in plasma
Which of lipophilic and hydrophilic drugs need to be metabolised before excretion?
Lipophilic only, they are metabolised into a hydrophilic substance
Where does metabolism of lipophilic drugs occur?
Liver
What are the stages of lipophilic drug metabolism?
Phase I- oxidation/reduction/hydrolysis
Phase II- conjugation with glucuronide/sulphate
→ hydrophilic drug.
How are hydrophilic drugs metabolised?
Unchanged
When lipophilic drugs have been metabolised into hydrophilic drugs, where are they excreted?
Kidneys, gall bladder
Some lipophilic drugs are metabolised into active metabolites e.g. opioids. When might this be a problem?
Accumulate in renal failure
What is ‘steady state’ of a drug?
When you give several doses, the plasma conc rises and falls but doesn’t fall back to 0 so a small increase with every dose. Steady state is when it is in equilibrium with its elimination. Normally 4 to 5 times the drug’s half-life. So may need a loading dose.
What is meant by the prescribing cascade?
When a medication is given to counteract the side-effects of another medication
What can drug reactions be sub-divided into?
ABCDE:
A- predictable from the way the drug works
B- bizzare- cannot be predicted from how the drug works
C- chronic- only after long term use
D- delayed- years later
E- end of treatment effects e.g. withdrawal
Can you give augmentin in penicillin allergy?
No- it is co-amoxiclav which contains amoxicillin
Can you give ceftriaxone in penicillin allergy?
With caution- it is a cephalosporin which 10% are also allergic to
Can you give Magnapen in penicillin allergy?
No it is aka co-fluampicil
Can you give tazocin in penicillin allergy?
No
Can you give Selexid in penicillin allergy?
No it is pivmecillinam
Can you give Timentin in penicillin allergy?
No
Can you give co-amoxiclav in penicillin allergy?
No
Can you give meropenem in penicillin allergy?
With caution- it is a carbapenem which 10% are also allergic to
Can you give aztreoman or other monobactams in penicillin allergy?
With caution 10% are also allergic
Can you give co-fluampicil in penicillin allergy?
No
For staph aureus you give which antibiotic?
Flucloxacillin
For strep pyogenes you give which antibiotic?
Benzylpenicillin
For gram -ve you give which antibiotic?
Cephalosporins (not in elderly though)
For anaerobes you give which antibiotic?
Metronidazole
For gram +ve (e.g. MRSA) you give which antibiotic?
Vancomycin
UTI normally caused by which bacteria?
Gram -ve rods
Enterococci
UTI antibiotics?
Trimethoprim
Nitrofurantoin (lower UTI only)
Pivmecillinam (lower only)
Bacteria causing sinusitis?
Mixed- strep pneumoniae, staph aureus, H. Influenzae
Abx for severe/prolonged sinusitis?
Amoxicillin
Clarithromycin
Bacteria causing CAP?
Strep pneumoniae
Antibiotics for CAP?
Co-amox and clarithromycin
or levofloxacin
Causative organism of HAP?
Enterobacteriaceae
Causative organism VAP?
Pseudomonas ssp
Aspiration pneumonia causative organism
Anaerobes
Endocarditis pathogen?
Strep (esp strep viridans)
Staph aureus
Endocarditis additional pathogen in prosthetic valve?
Coagulase negative staph
what is duke’s criteria used in?
Infective endocarditis diagnosis
What bloods do you do in endocarditis?
3x blood cultures separated in time over 24hrs
Antibiotics for endocarditis?
Vancomycin + rifampicin + ciprofloxacin (native) or gentamicin (prosthetic)
Causative organisms of surgical site infection?
Staph aureus
Group A beta-haemolytic strep (strep pyogenes)
Trimethoprim should be avoided in…
first trimester of pregnancy
Trimethoprim interferes with ____ _____ synthesis
Folic acid
Strep pneumoniae is a…..?
alpha haemolytic streptococcus (gram +ve)
Strep pyogenes is a?
Group A beta haemolytic strep (gram +ve)
Staph aureus is a?
Coagulase positive staphylococcus (gram +ve)
Staph epidermis is a?
Coagulase negative staphylococcus (gram +ve)
are coagulase negative staphs problematic?
Only with prostheses
Clostridium ssp. are?
Spore forming gram positive bacilli
Listeria ssp are?
Non-spore forming gram positive bacilli
Are mycobacteria gram positive or negative?
Weakly positive, but better to use an acid fast stain
What are enterococci?
Streptococci (gram positive catalase negative cocci)
What is neisseria meningitidis?
Gram negative (diplo)coccus
What is haemophilus ssp?
Gram negative cocco-bacillus
What are enterobactericaea?
Gram negative bacillus
what is coombs test for?
Haemolytic anaemia
SACDC is caused by?
B12 deficiency
Which type of lymphoma might present with a single enlarged lymph node?
Hodgkins
What organomegaly is present in lymphoma?
Hepatomegaly
Splenomegaly
Ramsey Hunt is
Bells palsy plus ear symptoms
Ramsey Hunt is caused by
VZV