Infection Flashcards
Preventing streptococcal
Phenoxymethylpenicillin, (erythromycin, azithromycin)
Meningococcal prevention
Ciprofloxacin or rifampicin or ceftriaxone
Influenza prevention
Rifampicin if not then ceftriaxone for all household contacts if there is a vulnerable individual
Diphtheria prevention
Erythromycin
Pertussis prevention (whoopig cough)
Clarithromycin (or azi/ery)
Pneumococcal infection treatment
Phenoxymethylpenicillin, (if pen allergic) erythromycin
Animal/human bites treatment
Co-amoxiclav (doxycycline+metronidazole if pen allergy)
Stomach/oesophagus operation antibiotics
Gentamicin, cefuroxime, co-amoxiclav (teicoplanin/vancomycin added if high MRSA risk, metronidazole added if biliary surgery)
Orthopaedic surgery antibiotics
Cefuroxime, flucloxacillin, gent, co-amox, metronidazole (if pen allergy or mrsa risk = teicoplanin/vancomycin)
Urological surgery antibiotics
Ciprofloxacin, metro, gent, cefuroxime
Cardio procedure prophylaxis
Cefuroxime or flucloxacillin+gentamicin or teic/vanc+gent
Enchinocandin drugs
Anidulafungin, caspofungin, micafungin
What are echnicondin used for
Only aspergilus (only caspo) and candida
Nystatin indications
Oral, oropharyngeal, perioral and candida albicans infection of skin
Polyene antifungals
Amphotericin, nystatin
Miconazole use
Oral infections, intestinal infections,
Imidazole antifungals
Clotrimazole, econazole, ketoconazole, tioconazole
When is voriconazole used
Broad spectrum used for life threatening infections
Itraconazole cautions
Liver damage
How to treat fungal meningitis and why
Fluconazole as it has good penetration into CSF
Triazole antifungals
Voriconazole, posaconazole, itraconazole. Fluconazole
Treating pityriasis
Itaconzaole or Fluconazole
Treating CNS candidiasis
Amphotericin
Vaginal candidiasis treatment
Locally (clotrimazole) or fluconazole if not then itraconazole
Oropharyngeal candidiasis treatment
fluconazole if not then itraconazole
Aspergillosis treatment
Voriconazole if not then amphotericin (itraconzole or caspofungin if refractory/intolerant to voriconazole) (fluconazole not effective)
What treats p aeruginosa
Aminoglycosides (tobramycin ideally), carbapenem
What treats pseudomonas
Ciprofloxacin
Treating MSRA
Vancomycin, Teicoplanin
Treating Staph
Flucloxacillin
Treating respiratory infections
Amox – clarithromycin/erythro
Treating skin infections
Flucloxacillin, co-amoxiclav if serious
Treating anaerobic infections
Metronidazole
treatment of acute uncomplicated falciparum malaria
Artemether with lumefantrine , Atovaquone with proguanil
prophylaxis acute uncomplicated falciparum malaria
Atovaquone with proguanil
When is doxycycline used in malaria
When travelling to areas of chloroquine resistance
When is primaquine used
To eliminate the liver stages of P. vivax or P. ovale following chloroquine treatment
When can you use quinine
if the infective species is not known
Non-pharmacological malaria prophylaxis
Net with permethrin, insect repellants DEET,
How long before travel should you take chloroquine+proguanil
1 week
How long before travel should you take mefloquine
2-3 weeks
How long before travel should you take atovaquone + proguanil/ doxycycline
1-2 days
How long should prophylaxis be taken after leaving the area for most antimalarials
4 weeks
What antimalarial has a short period of time that the drug should be taken after leaving the area and how long
Atovaquone with proguanil 1 week
Antimalarial drugs used in pregnancy
Chloroquine and proguanil give folic acid,quinine, mefloquine - weigh up benefits and negatives of all regimens
What antimalarial to use if a patient has epilepsy
Atovaquone with proquanil
Atovaquone with proquanil brand name
Malarone
Mefloquine brand name
Lariam
What to use if malaria infection is not known/mixed
Atovaquone with proquanil or Quinine
How to treat malaria if patient is pregnant
Quinine then use clindamycin
Treating falciparum malaria
Chloroquine, atovaquone with proguanil, primaquine
Treating Trichomonacides
Metronidazole
Trichomoniasis symptoms
Abnormal vaginal discharge ( yellow-green, fishy smell), soreness, swelling, itching, discomfort in sex or when urinating
men: pain when urinatic/ejaculating, frequent urinating, white discharge, swelling/soreness around head of penis
Treating septicaemia
Broad spectrum antipseudomonal penicillin or cephalosporin e.g pip taz, ticarcillin with clavulanic acid, cefuroxime
What to add to community septicaemia if MRSA suspected
Vancomycin/Teicoplanin
What to add to community septicaemia treatment if anaerobic
Metronidazole
What to use in community septicaemia treatment if resistant
Meropenem (broad spectrum beta lactam)
What sort of drug is need to treat hospital acquired septicaemia
Broad spectrum antipseudomonal beta lactam e.g. Pip taz, ceftazadime, meropenem
Treating septicaemia related to vascular catheter
Vancomycin/teic
Treating meningococcal septicaemia
Benzylpenicillin or cefotaxime or chloramphenicol
Covid-19 transmission
Respiratory droplets generated
Common COVID symptoms
Fever, cough, sob, delirium loss of smell, headache
Who is at risk developing severe pneumonia
Impaired immunity or reduced ability to cough/clear secretions
Characteristics of carbapenem
Broad-spectrum activity
Carbapenems gram characteristics
positive and negative
What carbapenems are active against p aeruginosa
Imipenem and meropenem
Common uses of carbapenem
Hospital acquired septicaemia and pneumonia, intra abdominal infections, skin and soft tissue ifections and complicated UTIs
Why is imipenem given with cilastatic
It is partially inactivated in the kidney by enzymatic activity
Examples of cabapenems
Meropenem, ertapenem, imipenem
What is ertapenem used for?
CAP, gynae and abdominal infections
Initial blind endocarditis treatment
Amoxicilin/ampicillin could add low dose gentamicin (Vancomycin if pen allergic)
Endocarditis staphylococci treatment
Flucloxacillin (vancomycin+rifampicin for pen allergy) 4 weeks
Endocarditis prosthetic valve staphylococci
Flucloxacillin (vancomycin if pen)+rifampicin+low dose gent - 6 weeks then review (review gent at 2 weeks)
Endocarditis caused by streptococci
Benzypenicillin (if less sensitive low dose gent added), vancomycin if pen allergy
When to stop gentamicin
Stop gentamicin at 2 weeks if micro-organisms moderately sensitive to penicillin
Endocarditis caused by HACEK treatment
Amoxicillin/ceftriaxone + low dose gent
Endocarditis caused by Enterococci treatment
Amoxicillin (vanc if pen)+ low dose gent (Benzypenicillin may also be added)
Mild diabetic foot infection treatment
Flucloxacillin first line.
If penicillin allergy/ C/I = clarithromycin, doxycycline, erythromycin (pregnancy)
Moderate diabetic foot infection treatment
Flucloxacillin+ gentamicin +/or metronidazole if not then amoxicillin + gentamicin or ceftriaxone+metronidazole (pen allergy = co-trimoxazole +gentamicin +metronidazole)
When to treat campylobacter enteritis and how
Immunocompromised/severe.
Clarithromycin (macrolide) or ciprofloxacin
First line diverticulitis
Co-amoxiclav(pen allergy , cefalexin+metronidazole, trimethoprim, metrondazole, or cipro+metronidazole)
Treating typhoid
Cipro or azithromycin
Treating salmonella
Cipro or cefotaxime
Treating c diff
Metronidazole then vancomycin, then fidaxomicin
Peritonitis treatment
Cephalosporin+ metronidazole or gent+metro
Otitis externa cause
P aeruginosa, staph a
Treating otitis externa
Flucloxacillin or clarithromycin/macrolide (if pen allergy)
Treating pseudomonas otitis externa
Ciprofloxacillin or aminoglycoside
Otitis media is
Infection in middle ear
Treating ear infection
Amoxicillin then co-amoxiclav. (if pen allergy = clarithromycin /erythromycin if pregnant)
Blepharitis cause
Staphylococci
Conjunctivitis cause
Streptococcus pneumoniae, Staphylococcus aureus, or Haemophilus influenzae
Blepharitis treatmebt
Chloramphenicol ointment, oral tetracyclines if >12yo
General HIV treatment strategy
2 NRTI+ Integrase inhibitor/NNRTI/Protease inhibitor
HIV backbone treatment
Emtricitabine+tenofovir or abacavir+iamivudine
HIV prep treatment
Emtricitabine with tenofovir or just tenofovir
Integrase inhibitors
bictegravir (BIC), dolutegravir (DTG), elvitegravir (EVG), and raltegravir (RAL).
nucleoside reverse transcriptase inhibitors (NRTI)
abacavir (ABC); emtricitabine (FTC), lamivudine (3TC); stavudine (d4T), tenofovir alafenamide fumarate (TAF), tenofovir disoproxil fumarate (TDF), and zidovudine (AZT).
CCR5 antagonist
Maraviroc
Protease inibitors
atazanavir (ATZ), darunavir (DRV), fosamprenavir (FOS-APV), lopinavir (LPV), ritonavir (RTV), saquinavir (SQV), and tipranavir (TPV).
Why do threadworms cause itching
Lay eggs on perianal skin
Treating threadworms
Mebendazole, single dose or another after 2 weeks
Treating Hep C
Interferon alfa, Ribavirin (not alone)
Treating chronic hepatitis b
Peginterferon alfa or interferon alfa(stop after 4 months) entecavir (if unresponsive after 6-9 months), tenofovir (if unresponsibe after 6-9 months)
Herpes labialis is
Cold sores
When is aciclovir used
Against all herpesviruses
Treating cytomegalovirus
Ganciclovir , valganciciclovir