Antibiotic Guidance for Hospital at Home

Warning

Sepsis of unknown cause

Important: Therapy

Oral therapy

Co-trimoxazole 960mg 12 hourly

+

Metronidazole 400mg 8 hourly if abdominal source suspected

 

IV Therapy

Hospital admission

Duration: depends on eventual diagnosis

If IV treatment is still needed after three days, discuss with Microbiology

True penicillin allergy: Discuss with Microbiology

Notes:

Intra-abdominal and hepatobiliary infection

Important: Therapy

Oral therapy

Co-trimoxazole 960mg 12 hourly

+

Metronidazole 400mg 8 hourly

 

IV Therapy

Hospital admission

Duration: depends on eventual diagnosis. Usually 5-7 days

PO Metronidazole is as good as IV if route available

If IV treatment is still needed after three days,  discuss with Microbiology

True penicillin allergy: Discuss with Microbiology

Notes:

Exacerbation of COPD with clinical evidence of bacterial infection

Important: Therapy

Oral therapy

Amoxicillin 500mg 8 hourly

Or

Doxycycline 200mg stat, then 100mg 24 hourly

 

IV Therapy unless otherwise stated

Co-amoxiclav2 1.2g 8 hourly

Where it is not possible to give TDS IV dosing, the evening dose of co-amoxiclav could be replaced by an oral dose of Co-amoxiclav 625mg + amoxicillin 500mg if oral route available. See above3. Alternatively, discuss with Cons. Microbiologist.

Duration 5 days

If clinical failure of oral therapy, send sputum and consider Co-amoxiclav2 625mg TDS PO / 1.2g 8 hourly IV

Notes:

Aspiration Pneumonia

Important: Therapy

Oral therapy

Amoxicillin 500mg -1g  8 hourly

Plus

Metronidazole 400mg 8 hourly

Or

Doxycycline 200mg stat, then 100mg 24 hourly

+

Metronidazole 400mg 8 hourly

 

IV Therapy unless otherwise stated

Amoxicillin 1g 8 hourly

+

Gentamicin5

+

Metronidazole 500mg 8 hourly (400mg 8 hourly PO if route is available)

 

True penicillin allergy:

Discuss with Microbiology

Where it is not possible to give TDS IV dosing, the evening dose of amoxicillin could be replaced by an oral dose of amoxicillin 1g if oral route available. See above3. Alternatively, discuss with Cons. Microbiologist

Duration 5-7 days

If IV treatment is still needed after three days, discuss with Microbiology

Notes:

Hospital or Nursing Home acquired Pneumonia

Important: Therapy

Oral therapy

Doxycycline 200mg stat, then 100mg 24 hourly

Or

Co-trimoxazole 960mg 12 hourly

 

IV Therapy unless otherwise stated

Amoxicillin 1g 8 hourly

+

Gentamicin5

True penicillin allergy: discuss with Microbiology

 

Where it is not possible to give TDS IV dosing, the evening dose of amoxicillin could be replaced by an oral dose of amoxicillin 1g if oral route available. See above3. Alternatively, discuss with Cons. Microbiologist

Duration 5-7 days

If IV treatment is still needed after three days, discuss with Microbiology

True penicillin allergy: discuss with Microbiology

Notes:

Community-acquired pneumonia

Important: Therapy

CURB-65 score can help assess severity.

Score 1 point for each of:

-             New confusion (AMT ≤ 8)

-             Urea > 7 mmol / L

-             Resp rate ≥ 30 / minute

-             BP (diastolic ≤ 60 mmHg or systolic < 90 mmHg)

-             Age ≥ 65

Treatment regimens are suitable for use in patients with or without suspected or known COVID-19 infection

Treat only if there is clinical suspicion of bacterial infection, such as purulent sputum, or evidence of consolidation

CURB-65 = 0 or 1

Oral therapy

Doxycycline 200mg stat, then 100mg 24 hourly

Or

Amoxicillin 500mg-1g 8 hourly

 

IV Therapy

Amoxicillin 1g 8 hourly

 

CURB-65 = 2

Oral therapy

Amoxicillin500mg-1g 8 hourly

 

True penicillin allergy

Doxycycline 200mg stat, then 100mg 24 hourly

 

IV Therapy (unless otherwise stated)

Seek medical advice

Amoxicillin 1g 8 hourly

+

If Legionella, Mycoplasma or other atypical bacterial pathogens suspected, add clarithromycin4 500mg 12 hourly

True penicillin allergy:

Clarithromycin4 oral 500mg 12 hourly

CURB-65 ≥ 3

Use IV

Seek medical advice

Co-amoxiclav2 1.2g 8 hourly

+

Clarithromycin4 oral 500mg 12 hourly

Where it is not possible to give TDS IV dosing, the evening dose of co-amoxiclav could be replaced by an oral dose of Co-amoxiclav 625mg + amoxicillin 500mg if oral route available. See above3. Alternatively, discuss with Cons. Microbiologist.

True penicillin allergy

Levofloxacin 2, 6 oral 500mg 12 hourly

Duration 5 days

Notes:

Lower UTI (uncomplicated)

Important: Therapy

If treated for UTI in the last 6 months, check Microbiology history for suitable antibiotic choice

Oral therapy

Nitrofurantoin1

100mg MR 12 hourly

Or

Trimethoprim 200mg 12 hourly

 

IV Therapy

See upper UTI

 

Duration

Females 3 – 5 days

Males 7 days

Notes:

Upper UTI

Important: Therapy

Oral therapy

Co-trimoxazole 960mg BD for 7 days

Or, if eGFR<30, Ciprofloxacin 2, 6 see BNF for dosing in renal impairment

 

IV Therapy (unless otherwise stated)

Amoxicillin 1g 8 hourly

+

Gentamicin5

Where it is not possible to give TDS IV dosing, the evening dose of amoxicillin could be replaced by an oral dose of amoxicillin 1g if oral route available. See above3. Alternatively, discuss with Cons. Microbiologist

 

True penicillin allergy

Gentamicin5 as a single agent

 

Duration

Oral: as per antibiotic choice

IV: aim to convert to oral and complete total duration as per IV choice

 

If IV treatment is still needed after three days discuss with Microbiology

True penicillin allergy: Discuss with Microbiology

Notes:

Catheter-related UTI

Important: Therapy

Do not use dipsticks with catheter samples. Treat only if symptomatic

Assess need for ongoing therapy after stat dose of gentamicin

Catheter change AND

Amoxicillin IV 1g 8 hourly

+

Gentamicin5

 

Where it is not possible to give TDS IV dosing, the evening dose of amoxicillin could be replaced by an oral dose of amoxicillin 1g if oral route available. See above3. Alternatively, discuss with Cons. Microbiologist

Or, if true penicillin allergy

Gentamicin5 as a single agent

Notes:

Cellulitis / soft tissue infection

Important: Therapy

If no features of systemic infection or osteomyelitis and infection is localised, PO can be used

Therapeutic drug monitoring of teicoplanin is not required for short courses

Duration 7-14 days

Oral therapy

Flucloxacillin 1g 6 hourly

 

If true penicillin allergy

Clarithromycin4 500mg 12 hourly

 

If MRSA suspected or known

Doxycycline 100mg 12 hourly

(check isolate is sensitive)

 

IV Therapy

Teicoplanin

NOTE: there are other teicoplanin regimens in use in NHS Borders. This guideline is for HOSPITAL AT HOME USE ONLY

Teicoplanin is loaded over three consecutive days (Days 1, 2 and 3) and this will provide equivalent to 5 days of treatment.

Teicoplanin should not be extended past the initial 5 days loading duration without input from an Infection specialist.

Patient’s age, height, weight and a stable serum creatinine are required to calculate the teicoplanin loading dose using the following steps:

 

Step 1:

Calculate creatinine clearance

•        Use Cockroft-Gault formula

CrCl (ml/min)=[(140-Age) X weight* X 1.23(male)or 1.04(female) ]

                                     Serum creatinine (micromol/L)**                                        

*Use total body weight (Kg)

**If Cr <60 micromol/L , use a value of 60 micromol/L

Step 2:

Decide on using Ideal or Actual Body Weight

• Use SAPG weight tables

 

• Use either Ideal or Total bodyweight, whichever is LOWER

Step 3:

Prescribe doses

Prescribe daily for first 3 days:

Creatinine Clearance (ml/min)

Ideal/Total body weight (kg)

40-59 kg

60-79 kg

>80 kg

<60

600mg

800mg

1000mg

≥60

800mg

800mg

1000mg

See Medusa monograph for reconstitution guidance.

Doses <800mg as IV infusion in 100ml over 30 minutes

Doses ≥800mg as IV infusion in 100ml over 60 minutes

 Reference

Lamont et al. Journal of Antimicrobial Chemotherapy 2009; 64 : 181-187

Notes:

Diabetic foot infection

Important: Therapy

See NHS Borders Diabetic Foot Infection guidance

Notes:

Important: Notes

  • All doses given are for normal renal function. Do not use Nitrofurantoin if eGFR is < 451; do not use Co-trimoxazole or Trimethoprim if eGFR is < 30
  • Review MHRA safety advice when prescribing fluoroquinolones
  • Always check the BNF for drug interactions before prescribing antibiotics
  • If no agent listed is suitable due to allergy or resistant isolates, discuss with Microbiology
  • Stop Gentamicin after 3 days unless advised by Microbiology. Check culture results when available. Ask daily if hearing or balance are affected
  • In suspected or confirmed COVID-19 infection, antibiotics should only be given if there is purulent sputum, or clinical evidence of consolidation
  • Guidance is for adult patients only
  • Guidance adapted from NHS Fife and NHS Lothian

*1 May be used with caution if eGFR 30-44 ml/minute as a short course only (3-7 days) to treat uncomplicated lower UTI if caused by suspected or proven multidrug resistant bacteria only if potential benefit outweighs risk.

2These antibiotics are associated with a higher risk of developing Clostridium difficile infection, particularly in elderly patients

3Substitution of the evening IV dose of co-amoxiclav or amoxicillin with an oral dose is suboptimal treatment and should only be considered where the clinician considers the risk versus benefit of the alternative of hospital admission to be outweighed by the benefits of treatment via Hospital at Home. The patient or their appropriate representatives should give consent to this regimen and this should be recorded in the patient’s medical notes. 

4Significant drug interactions

5See Gentamicin dosing calculator.  Do not give more than 3 days of Gentamicin unless advised by Microbiology. Check culture results to guide ongoing treatment

6Fluroquinolones

Refer to important safety information for all quinolones prior to prescribing.

See MHRA Drug Safety Update January 2024: Fluoroquinolones must only be used in situations when other antibiotics, that are commonly recommended for the infection, are inappropriate such as:

  • there is resistance to other first-line antibiotics recommended for the infection
  • other first-line antibiotics are contraindicated in an individual patient
  • other first-line antibiotics have caused side effects in the patient requiring treatment to be stopped
  • treatment with other first-line antibiotics has failed

Patients should be advised to stop fluoroquinolone treatment at the first signs of a serious adverse reaction, such as tendinitis or tendon rupture, muscle pain, muscle weakness, joint pain, joint swelling, peripheral neuropathy and central nervous system effects, and to contact their doctor immediately

Refer to MHRA’s sheet for patients (regular print or large print) for further advice

Editorial Information

Last reviewed: 31/01/2025

Next review date: 31/01/2028

Version: 2.0

Author email(s): anne.duguid@nhs.scot.

Approved By: NHS Borders Antimicrobial Management Team