“…[4–6,17,18,21–23,27] Five studies did not report on postoperative antibiotic regimen. [16,19,20,25,26] Four studies reported a re-dosing regimen within 4 hours after first administration, [6,17,25,26] 3 studies reported a procedure duration not requiring re-dosing, [20,22,23] 7 studies reported no information on re-dosing. [4,5,16,18,19,21,25,28] All but one study used fast infusing antibiotics such as cephalosporin with varying half times.…”