Epidemiology and risk factors associated with surgical site infection following surgery on thoracic aorta

Extensive analysis of risk factors associated with surgical site infections post-cardiothoracic open surgery

Surgical site infections (SSIs) post-cardiothoracic surgery represent a significant challenge in patient care. Understanding the risk factors contributing to SSIs is essential for improving surgical outcomes and patient safety. A comprehensive retrospective analysis was conducted at our institution from January 2021 to December 2022. This study included 30 patients with SSIs and 60 without, following cardiothoracic open surgery. Data were collected on various variables, including hypertension, anaemia, operation time, hospital stay, alcohol consumption, smoking habits, Body Mass Index, age, and drainage tube placement. Univariate and multivariate logistic regression analyses were employed using SPSS software to identify significant predictors of SSIs. Univariate analysis indicated a strong correlation between SSIs and factors like smoking, diabetes mellitus, drainage tube placement, anaemia, and significant intraoperative blood loss (≥800 mL). These factors were statistically significant with p-values < 0.05. Multivariate logistic regression further confirmed the impact of these factors, with high odds ratios indicating a substantial increase in SSI risk associated with these conditions. This study highlights intraoperative blood loss, anaemia, drainage tube placement, smoking, and diabetes mellitus as key risk factors for SSIs post-cardiothoracic surgery. Recognising and addressing these factors through targeted preventive measures is crucial in clinical practice to reduce the incidence of SSIs and improve postoperative care in cardiothoracic surgery.

Infectious complications following major heart surgery from the day of the surgery to hospital discharge

BACKGROUND

At some point in their lives, many people will require major heart surgery (MHS). Patients are generally older adults with various risk factors for infection. However, the incidence of infection after MHS is poorly known, as reported infection data are frequently biased due to different factors like the surgical procedure, postoperative timing, and infectious syndromes or etiologic agents, among others. In addition, most patient data are retrospectively obtained.

PURPOSE AND METHODS

Data were prospectively collected regarding the incidence of all nosocomial infections produced from the time of surgery to hospital discharge in a cohort of 800 adults consecutively undergoing a MHS procedure.

RESULTS

During postoperative hospitalization, 124 of the 800 participants developed one or more infections (15.5%): during their ICU stay in 68 patients (54.8%), during their stay on the general ward post ICU in 50 (40.3%), and during their stay in both wards in 6 (4.8%). The most common infections were pneumonia (related or not to mechanical ventilation), surgical site and bloodstream. As etiological agents, 193 pathogens were isolated: mostly Gram-negative bacilli (54.4%), followed by Gram-positive bacteria (30%), viruses (4.6%) and fungi (1.5%). In our cohort, all-cause mortality was recorded in 33 participants (4.1%) and 9 infection-related deaths (1.1%) were produced. Among subjects who developed infections, overall mortality was 13.7% and in those who did not, this was only 2.3%.

CONCLUSION

Infection following MHS remains frequent and severe. Our data suggest that hospital-acquired infection studies should consider episodes of infection in all populations during their entire hospital stay and not only those related to specific clinical syndromes or acquired while the patient is in intensive care.

Factors Contributing to Surgical Site Infections: A Comprehensive Systematic Review of Etiology and Risk Factors

Surgical site infections persist as a substantial concern within the realm of hospital-acquired infections. This enduring issue is further compounded by the mounting challenge of antibiotic resistance, a surge in surgical interventions, and the presence of comorbidities among patients. Thus, a comprehensive exploration of all discernible risk factors, as well as proactive preventive and prophylactic strategies, becomes imperative. Moreover, the prevalence of multidrug-resistant microorganisms has reached alarming proportions. Consequently, there is an acute need to investigate and scrutinize all potential therapeutic interventions to counter this burgeoning threat. Consequently, the primary objective of this review is to meticulously assess the origins and risk elements intertwined with surgical site infections across a diverse spectrum of surgical procedures. As the medical landscape continues to evolve, this critical analysis seeks to provide a nuanced understanding of the multi-faceted factors contributing to surgical site infections, with the overarching aim of facilitating more effective management and mitigation strategies. By exploring these dimensions comprehensively, we endeavor to enhance patient safety and the quality of surgical care in this era of evolving healthcare challenges.