Cefazolin for Antibiotic Prophylaxis in Left Total Knee Replacement

Recommended Antibiotic Protocol for Total Knee Arthroplasty

The American Society of Anaesthesiologists recommends cefazolin 2g IV slow infusion as the initial dose, administered within 60 minutes before surgical incision, for patients undergoing total knee replacement surgery 1, 2, 3
An additional dose of 1g of cefazolin is recommended if the surgical duration exceeds 4 hours, to maintain adequate antibiotic levels throughout the procedure 1, 2
The American Society of Anaesthesiologists suggests limiting the duration of prophylaxis to the operative period, with a maximum of 24 hours 1, 3

For patients with beta-lactam allergy, the American Society of Anaesthesiologists recommends clindamycin 900 mg IV slow infusion or vancomycin 30 mg/kg over 120 minutes as alternative options 1, 2, 3
Vancomycin infusion should be completed at the latest by the beginning of the procedure, ideally 30 minutes before, to ensure adequate tissue concentrations 1, 2

The use of antibiotic prophylaxis, such as cefazolin, can reduce infection rates in prosthetic joint surgery from 3-5% to less than 1% 4

Vancomycin should be reserved for specific indications, including beta-lactam allergy, known or suspected MRSA colonization, recent antibiotic therapy, or reoperation in a unit with MRSA ecology, as recommended by the American Society of Anaesthesiologists 1, 2, 3
The duration of prophylaxis should generally be limited to the operative period, with a maximum of 24 hours, to minimize the risk of antibiotic resistance and side effects 1, 3