Antibiotics Flashcards

0
Q

Community/hospital-acquired septicaemia (unknown source) - penicillin allergy

A

Ciprofloxacin 400mg IV bd + Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg)

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1
Q

Community-acquired septicaemia (unknown source) - 1st line for non-penicillin allergic

A

Cefuroxime 1.5g IV tds

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2
Q

Community/hospital-acquired septicaemia (unknown source) + hypotension

A

+ Gentamycin 7mg/kg IV stat

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3
Q

Community/hospital-acquired septicaemia (unknown source) - anaerobe suspected e.g. bowel-derived flora

A

+ Metronidazole 500mg IV tds

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4
Q

Hospital-acquired septicaemia (unknown source) - 1st line for non-penicillin allergic

A

Piperacillin/tazobactam 4.5g IV tds

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5
Q

Neutropenic sepsis (all haematology except myeloma, all oncology except high risk neuroblastoma/sarcoma) - 1st line for non-penicillin allergic

A

Piperacillin/tazobactam 4.5g IV tds + Gentamycin 7mg/kg IV od
Avoid Gentamycin if creatinine clearance <70ml/min)
Stop gentamycin after 1 dose if cultures negative

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6
Q

Neutropenic sepsis (all haematology except myeloma, all oncology except high risk neuroblastoma/sarcoma) + endoprosthesis in situ/tunnel infection/rigors with central line access/suspicion of line colonisation

A

+ Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg)

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7
Q

Mild-moderate CAP (CURB-65 0-2) - 1st line for non-penicillin allergic

A

Amoxicillin 500mg-1g IV tds +/- Clarithromycin 500mg IV bd
Switch to oral when appropriate
Total duration 5 days

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8
Q

Mild-moderate CAP (CURB-65 0-2) - penicillin allergy

A

Clarithromycin 500mg IV bd
Switch to oral when appropriate
Total duration 5 days

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9
Q

Severe CAP (CURB-65 3+ or clinical judgement) - 1st line for non-penicillin allergic

A

Co-amoxyclav 1.2g IV tds + Clarithromycin 500mg IV bd
Switch to oral when appropriate
Total duration 7 days

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10
Q

Severe CAP (CURB-65 3+ or clinical judgement) - Non-severe penicillin allergic (e.g. delayed rash)

A

Cefuroxime 1.5g IV tds + Clarithromycin 500mg IV bd
Switch to oral when appropriate
Total duration 7 days

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11
Q

Severe CAP (CURB-65 3+ or clinical judgement) - Severe penicillin allergic (e.g. anaphylaxis, bronchospasm, urticaria)

A

Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg) + Clarithromycin 500mg IV bd
Switch to oral when appropriate
Total duration 7 days

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12
Q

Simple HAP (early admission, no ITU) - 1st line for non-penicillin allergic

A

Cefuroxime 1.5g IV tds -or- Co-amoxyclav 1.2g IV tds
Switch to oral when appropriate
Total duration 5 days

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13
Q

Simple HAP (early admission, no ITU) - penicillin allergy

A

Clarithromycin 500mg IV bd
Switch to oral when appropriate
Total duration 5 days

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14
Q

Aspiration pneumonia - 1st line for non-penicillin allergic

A

Co-amoxyclav 1.2g IV tds -or- 625mg PO tds
Review diagnosis after 3 days
Total duration 5 days

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15
Q

Aspiration pneumonia - penicillin allergy

A

Clindamycin 300mg IV/PO qds
Review diagnosis after 3 days
Total duration 5 days

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16
Q

Infective exacerbation of COPD (no consolidation on CXR) - 1st line for non-penicillin allergic

A

Amoxicillin 500mg PO tds

Total duration 5 days

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17
Q

Infective exacerbation of COPD (no consolidation on CXR) - penicillin allergy

A

Doxycycline 200mg PO od

Total duration 5 days

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18
Q

Uncomplicated community-acquired lower UTI - 1st line

A

Trimethoprim 200mg PO bd
F: 3 days
M: 7 days

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19
Q

Uncomplicated community-acquired lower UTI - alternative unless creatinine clearance <60ml/min

A

Nitrofurantoin 50mg PO qds
F: 3 days
M: 7 days

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20
Q

Uncomplicated community-acquired lower UTI - pregnant

A

Cefadroxil 500mg PO bd

7 days

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21
Q

Uncomplicated hospital-acquired lower UTI - 1st line

A

Trimethoprim 200mg PO bd

7 days

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22
Q

Uncomplicated hospital-acquired lower UTI - alternative unless creatinine clearance <60ml/min

A

Nitrofurantoin 50mg PO qds

7 days

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23
Q

Acute pyelonephritis - 1st line for non-penicillin allergic

A
Cefuroxime 750mg-1.5g IV tds for 48h
Then
Oral therapy per sensitivities -or-
If no sensitivities, Ciprofloxacin 500mg PO bd
Total duration
7 days if Ciprofloxacin
10 days for all other antibiotics
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24
Acute pyelonephritis - penicillin allergy
Ciprofloxacin 500mg PO bd | 7 days
25
Acute pyelonephritis + refractory hypotension (septic shock)
+ Gentamycin 7mg/kg IV od
26
Mild-moderate cellulitis - 1st line for non-penicillin allergic
Flucloxacillin 500mg-1g PO qds (or 1g IV qds if oral route compromised) 7 days
27
Mild-moderate cellulitis - penicillin allergy
Clindamycin 300mg-450mg PO qds (or 600mg IV tds if oral route compromised) 7 days
28
Severe cellulitis - 1st line for non-penicillin allergic
Benzylpenicillin 1.2g IV qds + Flucloxacillin 2g IV qds Switch to oral when appropriate Flucloxacillin 1g PO qds Total duration 14 days
29
Severe cellulitis - penicillin allergy
Clindamycin 600mg IV tds Switch to oral when appropriate Clindamycin 600mg PO qds Total duration 14 days
30
Community-acquired necrotising fasciitis - 1st line for non-penicillin allergic
Benzylpenicillin 2.4g IV 2-4 hourly + Ciprofloxacin 400mg IV bd + Clindamycin 600mg IV qds
31
Community-acquired necrotising fasciitis - penicillin allergy
Ciprofloxacin 400mg IV bd + Clindamycin 600mg IV qds
32
Facial / peri-orbital cellulitis - 1st line for non-penicillin allergic
Co-amoxyclav 625mg PO tds | 10 days
33
Facial / peri-orbital cellulitis - penicillin allergy
Clindamycin 300mg PO qds | 10 days
34
Animal and human bites - 1st line for non-penicillin allergic
Co-amoxyclav 625mg PO tds | 7 days
35
Animal and human bites - penicillin allergy
Metronidazole 400mg PO tds + Doxycycline 100mg PO bd | 7 days
36
Acute osteomyelitis / Septic arthritis - 1st line for non-penicillin allergic
Flucloxacillin 1-2g IV qds + Sodium fusidate 500mg PO tds
37
Acute osteomyelitis / Septic arthritis - penicillin allergy
Clindamycin 600mg IV qds
38
Acute osteomyelitis / Septic arthritis - MRSA
Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg) + Sodium fusidate 500mg PO tds Minimum duration 6 weeks (IV for first 2 weeks)
39
Acute prosthetic joint injection
Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg) + Sodium fusidate 500mg PO tds Total duration 2 weeks, then discuss with microbiology
40
MRSA infection
Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg) MRSA is resistant to all penicillins, cephalosporins, carbapenems
41
Mild-moderate C.difficile - 1st line
Stop precipitating antibiotics, if possible Metronidazole 400mg PO tds 10-14 days
42
Mild-moderate C.difficile - 2nd line
If not responding to 1st line after 1 week, switch to Vancomycin 125mg PO qds 10-14 days
43
Severe C.difficile (WBC>15, acute rising creatinine >50% above baseline, temp >38.5oC, dilated oedematous colon on AXR)
Vancomycin 125mg PO qds | 10-14 days
44
Mild acute gastroenteritis / travellers' diarrhoea
Antibiotics not necessary
45
Moderate-severe acute gastroenteritis / travellers' diarrhoea - 1st line
Ciprofloxacin 500mg PO bd | 3 days
46
Moderate-severe acute gastroenteritis / travellers' diarrhoea - 2nd line/SE Asia
Azithromycin 500mg PO od | 3 days
47
Acute colangitis - 1st line for non-penicillin allergic
Co-amoxyclav 1.2g IV tds
48
Indolent native valve infective endocarditis - 1st line for non-penicillin allergic
Amoxicillin 2g IV 4o + Gentamycin 1mg/kg (Max 80mg) IV bd
49
Rapidly progressing native valve infective endocarditis or IVDU - 1st line for non-penicillin allergic
Flucloxacillin 2g IV 4o (>85kg) or 6o (<85kg)
50
Native valve infective endocarditis - penicillin allergy
Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg) + Gentamycin 1mg/kg (max 80mg) IV bd
51
Prosthetic valve infective endocarditis
Teicoplanin 400mg IV bd (6mg/kg if >85kg) for 3 doses, then 400mg IV od (6mg/kg if >85kg) + Gentamycin 1mg/kg (max 80mg) IV bd + Rifampicin 300mg PO bd
52
Meningitis - 1st line for non-penicillin allergic
Ceftriaxone 2g IV bd (IM if no IV access)
53
Meningitis - penicillin allergy
Chloramphenicol 12.5mg/kg (max 1g) IV qds
54
Meningitis + Gram positive cocci
+ Dexamethasone 0.15mg/kg IV qds | 4 days
55
Meningitis + GCS<15, recent seizures or suspect acute viral encephalitis
+ Aciclovir 10mg/kg IV tds
56
Meningitis + >50y, immunocompromised or pregnant
Discuss with microbiology as may be Listeria monocytogenes
57
Meningitis - treatment duration
Organism not identified: 7-14 days per clinical response Neisseria meningitidis: 7 days Strep. pneumoniae: 14 days HSV/VZV: Acyclovir IV 14-21 days
58
Gentamycin dosing
7mg/kg OD unless >70y, creatinine clearance <1mg/L - Post (peak) 3-5mg/L
59
Penicillin allergy - contra-indicated (red)
``` Amoxicillin Co-amoxyclav (Augmentin) Flucloxacillin Benzylpenicillin Penicillin V (Phenoxymenthylpenicillin) Piperacillin/Tazobactam (Tazocin) ```
60
Penicillin allergy - use with caution provided no Hx of severe allergy (amber)
Cephalosporins: Cefadroxil, cefuroxime, cefotaxime, ceftriaxone, ceftazidime, cefixime Carbapenems: Meropenem, imipenem, ertapenem
61
Penicillin allergy - safe (green)
Amikacin, azithromycin, ciprofloxacin, clarithromycin, clindamycin, chloramphenicol, colistin, co-trimoxazole, doxycycline, erythromycin, gentamycin, linezolid, metronidazole, nitrofurantoin, rifampicin, sodium fusidate, teicoplanin, tetracycline, trimethoprim, vancomycin