Adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)

Abstract Background Surgical antimicrobial prophylaxis (SAP) is essential for preventing surgical site infections (SSI) but is often improperly administered. This study assessed SAP adequacy and its association with SSI and other nosocomial infections (NI) to identify areas for improvement. Methods...

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Main Authors: Marco Piscaglia, Dolores Martín Sierra, Antonio Huelva Millán, Maria Teresa Garcia Poo, Jesús Rodríguez Baño, Maria Dolores del Toro López
Format: Article
Language:English
Published: BMC 2025-07-01
Series:Antimicrobial Resistance and Infection Control
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Online Access:https://doi.org/10.1186/s13756-025-01601-x
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author Marco Piscaglia
Dolores Martín Sierra
Antonio Huelva Millán
Maria Teresa Garcia Poo
Jesús Rodríguez Baño
Maria Dolores del Toro López
author_facet Marco Piscaglia
Dolores Martín Sierra
Antonio Huelva Millán
Maria Teresa Garcia Poo
Jesús Rodríguez Baño
Maria Dolores del Toro López
author_sort Marco Piscaglia
collection DOAJ
description Abstract Background Surgical antimicrobial prophylaxis (SAP) is essential for preventing surgical site infections (SSI) but is often improperly administered. This study assessed SAP adequacy and its association with SSI and other nosocomial infections (NI) to identify areas for improvement. Methods This cross-sectional and retrospective cohort study included adults undergoing elective cardiovascular, orthopaedic, colorectal surgeries and cystectomy in 2022 at a teaching hospital. SAP was considered adequate if it met all local guideline criteria: indication, drug, dose, timing of administration, redosing and duration. Associations between SAP adequacy and SSI were analyzed using generalized mixed models. Results Among 723 patients included (median age 68 years; 57.7% male), 714 (98.8%) received SAP. Overall multidomain adherence to SAP guidelines was 34.6%, with high compliance for regimen (92.8%), dose (97.5%), and timing (98.3%), but lower compliance for redosing (63.4%) and duration (53.9%). Regimen adequacy was significantly lower in patients with beta-lactam allergies (55.6% vs. 94.8%, p < 0.001) and in cystectomy cases compared to other procedures (41.2% vs. 94.1%, p < 0.001). Non-compliant regimens were independently associated with a higher SSI rate (adjusted OR 3.4; 95% CI: 1.8–8.3; p = 0.003), but not with non-SSI NIs. Inadequate SAP was also associated with a length of stay (LOS) exceeding 10 days (RR 4.61; p < 0.001) and higher 90-day mortality (RR 3.37; p = 0.007). Patients who developed an SSI were significantly more likely to develop additional non-SSI NIs (adjusted OR 6.1; 95% CI: 2.8–13.4; p < 0.001). Median LOS was longer in patients with SSI (16.5 vs. 7 days, p < 0.001), and SSI was also associated with increased 90-day mortality (14.7% vs. 2.7%; RR 5.42; p < 0.001). Conclusion Non-adherence to SAP guidelines was associated with an increased risk of SSI, prolonged LOS, and greater crude mortality. Key areas for improvement include regimen selection, appropriate redosing, and limiting SAP duration. Patients with beta-lactam allergies were specially at risk of receiving inadequate SAP. Although SAP non-compliance was not independently associated with other NIs, SSIs significantly increased their occurrence.
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spelling doaj-art-1255766a8cf3441f869ceed1eb4227042025-08-20T03:41:57ZengBMCAntimicrobial Resistance and Infection Control2047-29942025-07-011411910.1186/s13756-025-01601-xAdequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)Marco Piscaglia0Dolores Martín Sierra1Antonio Huelva Millán2Maria Teresa Garcia Poo3Jesús Rodríguez Baño4Maria Dolores del Toro López5Infectious Diseases Department, Luigi Sacco University HospitalInfectious Diseases and Microbiology Clinical Unit, Virgen Macarena University HospitalInfectious Diseases and Microbiology Clinical Unit, Virgen Macarena University HospitalInfectious Diseases and Microbiology Clinical Unit, Virgen Macarena University HospitalInfectious Diseases and Microbiology Clinical Unit, Virgen Macarena University HospitalInfectious Diseases and Microbiology Clinical Unit, Virgen Macarena University HospitalAbstract Background Surgical antimicrobial prophylaxis (SAP) is essential for preventing surgical site infections (SSI) but is often improperly administered. This study assessed SAP adequacy and its association with SSI and other nosocomial infections (NI) to identify areas for improvement. Methods This cross-sectional and retrospective cohort study included adults undergoing elective cardiovascular, orthopaedic, colorectal surgeries and cystectomy in 2022 at a teaching hospital. SAP was considered adequate if it met all local guideline criteria: indication, drug, dose, timing of administration, redosing and duration. Associations between SAP adequacy and SSI were analyzed using generalized mixed models. Results Among 723 patients included (median age 68 years; 57.7% male), 714 (98.8%) received SAP. Overall multidomain adherence to SAP guidelines was 34.6%, with high compliance for regimen (92.8%), dose (97.5%), and timing (98.3%), but lower compliance for redosing (63.4%) and duration (53.9%). Regimen adequacy was significantly lower in patients with beta-lactam allergies (55.6% vs. 94.8%, p < 0.001) and in cystectomy cases compared to other procedures (41.2% vs. 94.1%, p < 0.001). Non-compliant regimens were independently associated with a higher SSI rate (adjusted OR 3.4; 95% CI: 1.8–8.3; p = 0.003), but not with non-SSI NIs. Inadequate SAP was also associated with a length of stay (LOS) exceeding 10 days (RR 4.61; p < 0.001) and higher 90-day mortality (RR 3.37; p = 0.007). Patients who developed an SSI were significantly more likely to develop additional non-SSI NIs (adjusted OR 6.1; 95% CI: 2.8–13.4; p < 0.001). Median LOS was longer in patients with SSI (16.5 vs. 7 days, p < 0.001), and SSI was also associated with increased 90-day mortality (14.7% vs. 2.7%; RR 5.42; p < 0.001). Conclusion Non-adherence to SAP guidelines was associated with an increased risk of SSI, prolonged LOS, and greater crude mortality. Key areas for improvement include regimen selection, appropriate redosing, and limiting SAP duration. Patients with beta-lactam allergies were specially at risk of receiving inadequate SAP. Although SAP non-compliance was not independently associated with other NIs, SSIs significantly increased their occurrence.https://doi.org/10.1186/s13756-025-01601-xSurgical antimicrobial prophylaxisSurgical site infectionNosocomial infectionElective surgical proceduresAntimicrobial stewardship program
spellingShingle Marco Piscaglia
Dolores Martín Sierra
Antonio Huelva Millán
Maria Teresa Garcia Poo
Jesús Rodríguez Baño
Maria Dolores del Toro López
Adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)
Antimicrobial Resistance and Infection Control
Surgical antimicrobial prophylaxis
Surgical site infection
Nosocomial infection
Elective surgical procedures
Antimicrobial stewardship program
title Adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)
title_full Adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)
title_fullStr Adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)
title_full_unstemmed Adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)
title_short Adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital: a cross sectional and retrospective cohort study (ADEQUAP)
title_sort adequacy and implications of antimicrobial prophylaxis for elective surgeries in a tertiary hospital a cross sectional and retrospective cohort study adequap
topic Surgical antimicrobial prophylaxis
Surgical site infection
Nosocomial infection
Elective surgical procedures
Antimicrobial stewardship program
url https://doi.org/10.1186/s13756-025-01601-x
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