Surgical Prophylaxis Antibiotic Guidelines

 

Thoracic, neurosurgery (no spinal hardware), orthopedic (not total join or spine), vascular (no graft) and other surgeries not listed below 

 Drug

Dose

Timing

Infusion Duration

Re-dose Intraop

Cefazolin

<120 kg: 2 gm

≥120 kg: 3 gm

≤60 min before incision

Bolus over 3-5 mins

(with bolus, tissue levels adequate in a few mins)

2 gm q 4 hours

For Serious Beta-Lactam Allergy (i.e., Hives, Angioedema, Anaphylaxis)

Vancomycin

OR

1 gm

≤120 min before incision

Infuse over 60 mins in pre-op area

1 gm q 8 hours

Clindamycin

900 mg

≤60 min before incision

Infuse over 30 mins (not to exceed 30 mg/min)

900 mg q 6 hours


Urologic Surgery

TURP, TURBT, URS, ureteral stents, percutaneous nephrolithotomy (for TRUS, see Intra-Abdominal Surgery)

 Drug

Dose

Timing

Infusion Duration

Re-dose Intraop

Cefazolin

<120 kg: 2 gm

≥120 kg: 3 gm

≤60 min before incision

Bolus over 3-5 mins

(with bolus, tissue levels adequate in a few mins)

2 gm q 4 hours

For Serious Beta-Lactam Allergy (i.e., Hives, Angioedema, Anaphylaxis)

Ciprofloxacin

400 mg

≤120 min before incision

Infuse over 60 mins

400 mg q 6 hours


Intra-abdominal Surgery

Biliary, gastroduodenal, hernia repair

Drug

Dose

Timing

Infusion Duration

Re-dose Intraop

Cefazolin

<120 kg: 2 gm

≥120 kg: 3 gm

≤60 min before incision

Bolus over 3-5 mins

(with bolus, tissue levels adequate in a few mins)

2 gm q 4 hours

For Serious Beta-Lactam Allergy (i.e., Hives, Angioedema, Anaphylaxis)

Vancomycin

OR

1 gm

≤120 min before incision

Infuse over 60 mins in pre-op area

1 gm q 8 hours

Clindamycin

900 mg

≤60 min before incision

Infuse over 30 mins (not to exceed 30 mg/min)

900 mg q 6 hours


Intra-abdominal Surgery

Large and small bowel (including appendectomy), colon, transrectal ultrasound (TRUS)

Drug

Dose

Timing

Infusion Duration

Re-dose Intraop

Ceftriaxone

PLUS

Metronidazole

<40 kg: 1 gm

≥40 kg: 2 gm

500 mg

≤60 min before incision

≤60 min before incision

Bolus over 3-5 mins

(with bolus, tissue levels adequate in a few mins)

Infuse over 30 mins

<40 kg: 1 gm q 12 hr

≥40 kg: 2 gm q 12 hr

500 mg q 6 hours

For Serious Beta-Lactam Allergy (i.e., Hives, Angioedema, Anaphylaxis)

Ciprofloxacin

PLUS

400 mg

≤120 min before incision

Infuse over 60 mins

400 mg q 6 hours

Metronidazole

500 mg

≤60 min before incision

Infuse over 30 mins

500 mg q 6 hours


 

Obstetrics/Gynecology

Cesarean delivery, hysterectomy, midurethral sling, vaginal prolapse (uterosacral suspension, sacrocolpopexy)

Drug

Dose

Timing

Infusion Duration

Re-dose Intraop

Cefazolin

<120 kg: 2 gm

≥120 kg: 3 gm

≤60 min before incision

Bolus over 3-5 mins

(with bolus, tissue levels adequate in a few mins)

2 gm q 4 hours

For Serious Beta-Lactam Allergy (i.e., Hives, Angioedema, Anaphylaxis)

Clindamycin

PLUS

900 mg

≤60 min before incision

Infuse over 30 mins (not to exceed 30 mg/min)

900 mg q 6 hours

Gentamicin

OR

5 mg/kg**

≤60 min before incision

Infuse over 30 mins

No need to re-dose

**Secondary Alternative For Hysterectomy Only**

Ciprofloxacin

PLUS

400 mg

≤120 min before incision

Infuse over 60 mins

400 mg q 6 hours

Metronidazole

500 mg

≤60 min before incision

Infuse over 30 mins

500 mg q 6 hours


 

Surgeries with Prosthetic Material

Hip & knee arthroplasty, spinal hardware procedures, placement of vascular graft

Drug

Dose

Timing

Infusion Duration

Re-dose Intraop

Cefazolin

PLUS

<120 kg: 2 gm

≥120 kg: 3 gm

≤60 min before incision

Bolus over 3-5 mins

(with bolus, tissue levels adequate in a few mins)

2 gm q 4 hours

Vancomycin

1 gm

≤120 min before incision

Infuse over 60 mins

in pre-op area

1 gm q 8 hours

For Serious Beta-Lactam Allergy (i.e., Hives, Angioedema, Anaphylaxis)

Vancomycin

OR

1 gm

≤120 min before incision

Infuse over 60 mins in pre-op area

1 gm q 8 hours

Clindamycin

900 mg

≤60 min before incision

Infuse over 30 mins (not to exceed 30mg/min)

900 mg q 6 hours


 

Clean-contaminated head and neck surgery

Cefazolin

PLUS

<120 kg: 2 gm

≥120 kg: 3 gm

≤60 min before incision

Bolus over 3-5 mins (with bolus, tissue levels adequate in a few mins)

2 gm q 4 hours

Metronidazole

OR

500 mg

≤60 min before incision

Infuse over 30 mins

500 mg q 6 hours

Ampicillin-Sulbactam

3 gm

≤60 min before incision

Infuse over 30 mins

3 gm q 2 hours x 3 doses maximum; then q 6 hours

For Serious Beta-Lactam Allergy (i.e., Hives, Angioedema, Anaphylaxis)

Clindamycin

900 mg

≤60 min before incision

Infuse over 30 mins (not to exceed 30 mg/min)

900 mg q 6 hours


 

Pediatric Patients - Suggested Dosing*

Drug

Dose

Cefazolin

25 mg/kg

Vancomycin

15 mg/kg

(as an infusion over 30-60 min)

Gentamicin

2.5 mg/kg

Clindamycin

10 mg/kg

Ceftriaxone

50 mg/kg

Metronidazole

10 mg/kg

Ampicillin-Sulbactam

50 mg/kg of ampicillin component

*All pediatric doses should not exceed adult dosing recommendations. 


 
Notes:

In most instances, a single antibiotic dose prior to the procedure is sufficient for prophylaxis.

However:

Per protocol for clean-contaminated head and neck surgery, antibiotics should be continued for a maximum of 24 hours post surgery

Additional intra-operative doses should also be administered in circumstances of significant blood loss (Adults: ≥6 units or ≥1.5 L EBL or hemo dilution during surgery. Pediatrics ≥20-30 mL/kg).

With prolonged procedures, antibiotics may need to be re-dosed intraoperatively to ensure adequate levels until wound closure. Please refer to “Re-dose Intraop” column for information on specific antibiotics.

Prophylactic antibiotics should not be continued after wound closure

Always confirm with surgeons at the Time-Out or earlier before antibiotics are administered. In some cases they may wish to delay antibiotics until after cultures are obtained.

The entire antibiotic dose should be administered before the tourniquet is inflated

 

Surgical Prophylaxis Full Guideline PDF