Antibiotic man Flashcards
What NEWS score coupled with infection would make you think Sepsis and what do you need to complete thereafter ?
A NEWS score of equal to or greater than 5
You must complete sepsis 6 bundle within 1 hr (BUFALO)
What SIRS score and likely source of infection would make you think Sepsis and thereafter what must you do ?
SIRS of equal to or greater than 2:
- Temperature >38°C < 36°C
- HR > 90 beats per minute
- Altered mental state
- RR >20 breaths/min
- WCC <4 or >12
- Known or suspected neutropenia
Complete Sepsis 6 bundle within 1 hr (BUFALO)
How often should IV antibiotic therapy be reviewed ?`
Every 12-24hrs
What are the indications to continue with IV antibiotics and not change to oral ?
Continuing serious sepsis (2 or more of the following):
- temp > 38°C or < 36°C
- tachycardia ≥ 90/min
- tachypnoea > 20 breaths/min
- WCC > 12 or < 4
- Febrile with neutropenia (WCC <1.0) or immunosuppression
Specific infections which require high dose IV therapy eg endocarditis, septic arthritis, osteomyelitis, meningitis, abscess, cystic fibrosis patients, prosthetic infection
Oral route compromised:
- vomiting
- nil by mouth
- reduced absorption e.g. severe diarrhoea or steatorrhoea
- mechanical swallowing disorder
- unconscious
Patient post surgery not tolerated 1 litre of oral fluids
IV antibiotic not included in IVOST protocol
What should you always check prior to prescribing gentamicin ?
Exclusion criteria
What is the exclusion criteria for giving a patient Gentamicin?
- Children < 16 years old
- Ascites > 20% body weight
- Major burns > 20% body surface
- Decompensated Liver Disease
- Myasthenia Gravis
- Renal Transplant
- Acute Kidney Injury (AKI 3) on dialysis or eGFR <20ml/min
- End stage renal failure on dialysis with residual kidney function
What 3 things should be done if IV gentamicin is still indicated after 72hrs of treatment (or if poor/deteriorating renal function)?
- Check microbiology results & sensitivities
- Consider switch to aztreonam
- If required ask Infectious diseases (ID) or microbiology for advice
What is the standard treatment for bacterial meningitis ?
IV ceftriaxone + IV dexamethasone (started with or just before first dose of antibiotics)
What is the treatment of bacterial meningitis in those equal to or >60 or immunocompromised ?
IV ceftriaxone + IV dexamethasone + IV amoxicillin
What is the treatment of suspected encephalitis ?
IV aciclovir
What is the treatment of epiglottis/supraglottis ?
- IV ceftriaxone
- Step down to Co-amoxiclav PO (or in penicillin allergy: PO Doxycycline + Metronidazole)
What should be done to assess the severity of a pneumonia and ==> decide the treatment ?
CURB65 score
- Confusion
- Urea > or equal to 7 mmol/l
- RR > or equal to 30
- BP: SBP < 90 or DBP < 60
- Age > or equal to 65
What is the treatment of a mild/moderate community acquired pneumonia (CAP) and what CURB65 score classifys it as one ?
Score of 0-2
Amoxicillin IV/PO (If penicillin allergic: Doxycycline PO on day 1 then or IV Clarithromycin if NBM - nil by mouth)
What is the standard treatment of a severe CAP and what CURB65 score classifys it as one ?
- Score of 3-5
- Co-amoxiclav IV + Doxycycline PO (If penicillin allergic: IV Levofloxacin)
What is the standard treatment of a severe CAP in ICU/HDU or one who is NBM ?
Co-amoxiclav IV + Clarithromycin IV (If penicillin allergic: IV Levofloxacin)
What is the stepdown treatment for ALL patients with severe CAP?
Doxycycline IV/PO
What is the treatment of a non-severe hospital acquired pneumonia (HAP)?
PO Amoxicillin (If penicillin allergic: Doxycycline)
What is the treatment of a severe HAP ?
IV Amoxicillin + Gentamicin (If penicillin allergic:IV Co-trimoxazole + Gentamicin)
What is the step down treatment of a severe HAP ?
PO Co-trimoxazole
What should be done if a patient has a severe HAP with a previous ICU admission or history of MRSA?
seek advice
What is the treatment of a non-severe aspiration pneumonia ?
PO Amoxicillin + Metronidazole (If penicillin allergic: PO Doxycycline + Metronidazole)
What is the treatment of a severe aspiration pneumonia ?
IV Amoxicillin + Metronidazole + Gentamicin (If penicillin allergic: replace amoxicillin with PO Doxycycline or IV Clarithromycin)
What is the stepdown treatment of a severe aspiration pneumonia ?
PO Amoxicillin + Metronidazole (If pencillin allergic replace amoxicillin with doxycyline)
When should antibiotics be given and when should they not be in an acute exacerbation of COPD?
- Give antibiotics if ↑ sputum purulence.
- If no ↑ sputum purulence then no antibiotics unless consolidation on CXR or signs of pneumonia
What is the 1st and 2nd line treatment of acute exacerbations of COPD ?
- 1st line = Amoxicillin
- 2nd line = Doxycyline
When are antibiotics given for acute cough/bronchitis ?
They are not usually given as they provide no significant benefit in clinical improvement but may be considered in the frail elderly
If antibiotics where to be given for acute cough/bronchitis what is 1st and 2nd line ?
- 1st line = Amoxicillin
- 2nd line = Doxycyline
What 3 things should always be done for endocarditis?
- Take blood cultures
- Start empirical antibiotic therapy and refer to ID/microbiology
- Always check full endocarditis guidance for gentamicin/vancomycin dosing especially if reduced renal function
What is the treatment of Native valve indolent (Subacute) endocarditis ?
IV Amoxicillin + Gentamicin (If true penicillin allergy use Vancomycin + Gentamicin)
What is the treatment of Native valve severe sepsis (Acute) endocarditis ?
IV Flucloxacillin (If true penicillin allergy use Vancomycin + Gentamicin)
What is the treatment of Prosthetic valve or Suspected MRSA endocarditis ?
IV Vancomycin + Gentamicin + when therapeutic vancomycin levels reached add Rifampicin PO
How is the severity of C.diff assessed ?
Severe if one or more of the following severity markers:
- Temperature > 38.5°C
- Ileus, colonic dilatation >6cm on AXR/CT, toxic megacolon and/or pseudomembranous colitis
- WBC >15 cells x 109 L
- Acute rising serum creatinine >1.5 x baseline
- Has persisting CDI where the patient has remained symptomatic and toxin positive despite 2 courses of appropriate therapy
What is the treatment of non-severe C.diff ?
- 1st line = Metronidazole PO
- 2nd line = Vancomycin
What is the 1st and 2nd line treatment of severe C.diff?
- 1st line = PO Vancomycin if oral not available give via NG tube
- 2nd line = If ileus is detected or NG route not available treat with IV metronidazole + vancomycin (via NG or intracolonic) until ileus is resolved.
What is classified as recurrent C.diff infection and what is the treatment of it ?
Recurrent if positive CDI in previous 8 weeks
Fidaxomicin +/- Vancomycin tapering regime
What is the antibiotic treatment of acute gastroenteritis or acute pancreatitis ?
Antibiotics unlikely to affect outcome. Seek advice
What is the treatment of Peritonitis/biliary tract/ intra-abdominal infection ?
- IV Amoxicillin + Metronidazole + Gentamicin (Think GAM)
- (If penicillin allergic: IV Vancomycin + Metronidazole + Gentamicin
What is the step-down treatment of Peritonitis/biliary tract/ intra-abdominal infection ?
PO Co-trimoxazole + Metronidazole
What is the treatment of mild proven spontaneous bacterial peritonitis ?
PO Co-trimoxazole
What is the initial and stepdown treatment of severe proven spontaneous bacterial peritonitis ?
- IV Piperacillin/Tazobactam
- then step down to Co-trimoxazole PO
What are the 3 key things to remember when investigating and treating UTI’s in catheterised patients ?
- Do not use urinanalysis
- Do not treat unless clinical signs/symptoms of infection
- If definite infection treat as per complicated UTI guidance
What are the 3 key things to remember when investigating and treating UTI’s in older adults ?
- Do not use urinanalysis
- Do not treat unless clinical signs/symptoms of infection
- If definite infection treat as per normal guidelines
What is the initial and step-down treatment of complicated UTI/pyelonephritis/ urosepsis ?
- IV Amoxicillin + Gentamicin (If penicillin allergic: IV Co-trimoxazole + Gentamicin)
- Step down: PO Co-trimoxazole or as per sensitivities
What is the treatment of uncomplicated female lower UTI’s and for how long?
- 1st line = Nitrofurantoin
- 2nd line = Trimethoprim
3 days
What is the treatment of uncatheterised male UTI’s and for how long?
- 1st line = Nitrofurantoin
- 2nd line = Trimethoprim
7 days
What is the treatment of acute bacterial prostatits ?
1st line = PO Ofloxacin or Ciprofloxacin or PO Trimethoprim if high CDI risk
If IV required: Amoxicillin IV + Gentamicin IV then step down as per oral options above
What is the treatment of Epididymo-orchitis ?
- If urethral discharge, new sexual partner in last 3/12 or <35yrs old then treat as likely STI and give Doxycyline (unless history of anal then give Ofloxacin or ciprofloxacin)
- If no urethral discharge, No recent change sexual partner And >35 years old then ask about Any fever or back pain or signs of sepsis? ==> If YES then treat as Upper UTI, if NO then treat with Ofloxacin or ciprofloxacin
How is the severity of cellulitis assessed ?
(essentially assessing if they have sepsis or not)
- Mild = No signs of systemic toxicity
- Sepsis = Systemically unwell and/or NEWS ≥5
- Septic Shock and/or Necrotising Fasciitis (NF) = Evidence of end organ dysfunction despite fluid resuscitation and/or local signs of necrotising fasciitis (e.g. pain / systemic upset disproportionate to appearance, bullae, haemorrhage / bruising, rapid progression, crepitus)
What is the treatment of mild cellulitis ?
- 1st line = Flucloxacillin PO for 7 days
- 2nd line = If not resolving or penicillin allergy: Doxycycline for 7 days
What is the treatment for septic cellulitis ?
1st line = IV flucloxacillin with stepdown to PO flucloxacillin (if penicillin allergy IV vancomycin with stepdown to PO doxycycline)
What is the treatment of Septic Shock and/or Necrotising Fasciitis cellulitis ?
1st line = IV Flucloxacillin + Clindamycin + Gentamicin (if penicillin allergy then IV Clindamycin + Gentamicin +/- Vancomycin if risk of MRSA)
How is the severity of diabetic foot infections classified ?
Mild:
- Either: 2 or more features of inflammation: pus,erythema, pain, tender, warmth, induration Or (b) Cellulitis <2cm. Confined to skin or subcutaneous tissue and No evidence of systemic illness
Moderate:
- As per mild with either: (a) Lymphatic streaking, deep tissue infection (subcutaneous, fascia, tendon, bone), abscess Or (b) Cellulitis >2cm and No evidence of systemic illness
Severe:
- Any infection with evidence of severe sepsis.
Osteomyelitis
What is the treatment of a mild infected diabetic foot ?
- 1st line = PO flucloxacillin
- 2nd line = PO doxycycline
What is the treatment of a moderate infected diabetic foot ?
- 1st line = PO Flucloxacillin + Metronidazole
- 2nd line = If deep tissue infection: IV Flucloxacillin + PO Metronidazole
What is the treatment of a severe diabetic infected foot ?
- IV Flucloxacillin + Gentamicin (or Aztreonam) + IV/PO Metronidazole
What is the treatment of acute septic arthritis/ostemyelitis ?
- IV flucloxacillin and seek ID advice
What is the open fracture prophylaxis treatment and when should it be started ?
- IV Co-amoxiclav (or IV Co-trimoxazole + Metronidazole)
- Start within 3 hours for max 72 hours
What is the antibiotic treatment for severe systemic infections of unknown origin ?
1st line = IV Amoxicillin + Metronidazole + Gentamicin (GAM) (If PWID add S. aureus cover IV Flucloxacillin)
(If penicillin allergy IV Vancomycin + Metronidazole + Gentamicin)