Algarny, Saeed Mohammad Abdullah Alqohaiby (2023). Pathologische Wundheilungsstörungen nach Wirbelsäulenoperationen – Zusammenhang zwischen Operationsdauer und isoliertem Keim. PhD thesis, Universität zu Köln.
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Abstract
Introduction: Various factors have been known to influence the risk of developing postoperative surgical site infections (SSI). One of the most common risk factors for SSI is the duration of the surgery itself. The objective of this study is to examine if a relationship between the duration of surgery and the spectrum of pathogens causing postoperative surgical site infections exists. Methods: Patients who had at least one revision surgery of the spine due to SSI, with at least one positive intraoperative culture were selected chronologically through the hospital patient management system. Patients who were operated primarily due to spondylodiscitis were excluded from this study. Age, gender, ethnicity, and nationality of patients were not deemed as exclusion criteria for this study. Patient data such as age, gender, body mass index, ASA classification, diagnoses, duration of primary surgery, pathogens discovered through postoperative blood cultures and intraoperative cultures, among others, were collected anonymously and stored electronically. The statistical analysis of the data was carried out through the Statistical Package for the Social Sciences software version 28 (SPSS, Chicago, Illinois, USA) with a significance level of 0,05. Results: 75 patients were included in this study. There were 36 male and 39 female patients. The median age of the population was 64 years. Patients were primarily operated mainly due to spinal stenosis, spinal disc herniation, vertebral fracture, and metastasis. The mean duration of the primary surgery was 131,5 minutes. There were 19 positive postoperative blood cultures in the study population. The most common species were Staphylococcus aureus, Staphylococcus haemolyticus and Staphylococcus hominis. The difference of mean of the surgical duration between the groups of pathogen species discovered in postoperative blood cultures was tested and was found out to be statistically significant (ANOVA p = 0,002). Discussion: The duration of surgery has been known to increase the risk of postoperative SSI through numerous studies. This study further analysed the relationship between surgical duration and SSI and found out that the surgical duration predisposes SSI to be caused by certain pathogenic species. Conclusion: The knowledge of pathogen predisposition according to the duration of surgery must be further studied through clinical research and incorporated into guidelines for the selection of an appropriate antibiotic or antibiotic combination for the empiric treatment of postsurgical SSI.
Item Type: | Thesis (PhD thesis) | ||||||||
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URN: | urn:nbn:de:hbz:38-705620 | ||||||||
Date: | 21 June 2023 | ||||||||
Language: | English | ||||||||
Faculty: | Faculty of Medicine | ||||||||
Divisions: | Faculty of Medicine > Orthopädie | ||||||||
Subjects: | Medical sciences Medicine | ||||||||
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Date of oral exam: | 21 June 2023 | ||||||||
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Refereed: | Yes | ||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/70562 |
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