Post-operative site infections among surgical patients at Southern Ethiopia: A prospective cohort study
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ABSTRACT:
SUBMITTER: Abdu Seid M
PROVIDER: S-EPMC10998209 | biostudies-literature | 2024 Mar
REPOSITORIES: biostudies-literature
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Project description:The impact of glucose control on surgical-site infection (SSI) and death remains unclear. We examined how pre- and post-operative glucose levels and their variability are associated with the risk of SSI or in-hospital death.This retrospective cohort study employed data on 13,800 hospitalized patients who underwent a surgical procedure at a large referral hospital in New York between 2006 and 2008. Over 20 different sources of electronic data were used to analyze how thirty-day risk of SSI and in-hospital death varies by glucose levels and variability. Maximum pre- and post-operative glucose levels were determined for 72 hours before and after the operation and glucose variability was defined as the coefficient of variation of the glucose measurements. We employed logistic regression to model the risk of SSI or death against glucose variables and the following potential confounders: age, sex, body mass index, duration of operation, diabetes status, procedure classification, physical status, emergency status, and blood transfusion.While association of pre- and post-operative hyperglycemia with SSI were apparent in the crude analysis, multivariate results showed that SSI risk did not vary significantly with glucose levels. On the other hand, in-hospital deaths were associated with pre-operative hypoglycemia (OR = 5.09, 95% CI (1.80, 14.4)) and glucose variability (OR = 1.14, 95% CI (1.03, 1.27) for 10% increase in coefficient of variation).In-hospital deaths occurred more often among those with pre-operative hypoglycemia and higher glucose variability. These findings warrant further investigation to determine whether stabilization of glucose and prevention of hypoglycemia could reduce post-operative deaths.
| S-EPMC3446927 | biostudies-other
Project description:BackgroundSurgical site infections are one of the leading health care-associated infections in developing countries. Despite improvements in surgical technique and the use of best infection prevention strategies, surgical site infections remained the major cause of hospital acquired infections. Therefore, this study aimed to determine incidence, risk factors, and outcomes of surgical site infections among patients admitted to Jimma Medical Center, South West Ethiopia.MethodsA hospital based prospective cohort study design was employed to follow adult patients admitted to general surgery ward, orthopaedic ward and gynaecologic/obstetrics ward of Jimma Medical Centre, from April 20 to August 20, 2019. All patients were followed daily before, during and after operation for 30 days to determine the incidence of surgical site infection and other outcomes. Data was entered using EpiData version 4.2 and analyzed using statistical software package for social science version 20.0. To identify the independent predictors of outcome, multiple stepwise backward cox regression analysis was done. Statistical significance was considered at p-value <0.05.ResultsOf total of 251 participants included to the study, about 126 (50.2%) of them were females. The mean ± SD age of patients was 38 ± 16.30 years. Considerable number of patients 53(21.1%) developed surgical site infections. American Society of Anaesthesiologists score ≥3 [ Adjusted Hazard Ratio (AHR) = 2.26; 95%CI = (1.03-4.93)], postoperative antibiotic prescription [AHR = 3.2; 95%CI = (1.71-6.01)], contaminated-wound [AHR = 7.9; 95%CI = (4.3-14.60)], emergency surgery [AHR = 2.8; 95% CI = (1.16-6.80)], duration of operation ≥ 2 h [AHR = 4; 95% CI = (2.17-7.50)] and comorbidity [AHR = 2.52; 95%CI = (1.28-4.94)] were independent predictors for surgical site infections. Twenty nine (11.6%) patients returned to operation room. The result of the multivariate cox regression analysis showed that SSI [AHR (95% CI) = 7(3.16-15.72)], and incision site [AHR (95% CI) = 2.5(1.14-5.42)] had statistically significant association with re-operation.ConclusionThe incidence of surgical site infection was high in the study setting. There were significant numbers of contributing factors for the occurrence of surgical site infections. Although no mortality observed during the study period, significant number of patients re-operated. Large multicenter study is urgently needed to confirm the outcome of this study.
| S-EPMC8058519 | biostudies-literature
Project description:ObjectiveThis study aimed to assess the prognostic value of the Nutritional Risk Score 2002 (NRS2002) and patient-generated subjective global assessment (PG-SGA) for post-operative infections in patients with gastric cancer (GC) and colorectal cancer (CRC) who underwent curative surgery.MethodsThis prospective study included 1,493 GC patients and 879 CRC patients who underwent curative surgery at 18 hospitals in China between April 2017 and March 2020. The NRS2002 and PG-SGA were performed on the day of admission. The relationship between the nutritional status of patients before surgery and post-surgical incidence of infection was analyzed using univariate and multiple logistic regression analyses.ResultsAccording to NRS2002, the prevalence of nutritional risk was 51.1% in GC patients and 63.9% in CRC patients. According to the PG-SGA, 38.9% of GC patients and 54.2% of CRC patients had malnutrition. Approximately 4.4% of the GC patients and 9.9% of the CRC patients developed infectious complications after surgery. The univariate and multiple logistic regression analyses showed that the risk of infections was significantly higher in GC patients with a high nutritional risk score (NRS2002 ≥5) than in those with a low score (NRS2002 <3), and the PG-SGA score was identified as a predictor of post-operative infection complications of CRC.ConclusionThe pre-operative nutritional status of patients with GC or CRC has an impact on post-operative infection occurrence. NRS2002 ≥5 was a risk factor for post-operative infection in patients with GC, and the PG-SGA B/C was a predictor of infections in patients with CRC.
| S-EPMC9184816 | biostudies-literature
Project description:ObjectivesSurgical site infections occur within 30 days of an invasive surgical procedure in the parts of the body where the surgery is performed. Therefore, this study aimed to determine the prevalence, antimicrobial susceptibility patterns, and associated risk factors of surgical site infections at Bule Hora University Teaching Hospital, Southern Ethiopia.MethodsAn institution-based cross-sectional study was conducted with 183 consecutively enrolled participants between 1 January and 30 June 2023. Microbiological identification and antimicrobial susceptibility testing of the organisms isolated from clinical samples were performed aseptically. Data were collected using a questionnaire and analysed using SPSS version 26.ResultsThe overall prevalence of surgical site infections was 15.8% (95% CI, 10.9-22). The predominant isolate was Staphylococcus aureus (n = 14; 34.1%). There were 18 (43.9%) multidrug-resistant isolates. Age group >54 (adjusted odds ratio [AOR] = 4.76, 95% CI, 1.10-20.560), hospital stay ≥10 days (AOR = 2.66, 95% CI, 1.06-6.66],), operation duration ≥2 hours (AOR = 2.64, 95% CI, 1.01-6.90), clean-contaminated wound (AOR = 3.17, 95% CI, 1.21-8.30), open surgical site (AOR = 2.64, 95% CI, 1.02-6.86), and malnutrition (AOR = 4.3, 95% CI, 1.42-12.97) were significantly associated with surgical site infections.ConclusionsThe prevalence of surgical site infections and multidrug-resistant isolates is higher compared with World Health Organisation reports or previous studies. This finding emphasises the need for routine screening and antimicrobial susceptibility testing to prevent and control site infections.
| S-EPMC11771276 | biostudies-literature
Project description:ObjectiveThere are limited data in Ethiopia on common childhood illnesses. We aimed to measure the incidence and risk factors of common childhood illnesses in rural parts of southern Ethiopia.DesignA community-based cohort study.Participants and study settingA total of 903 children of 5 years or younger were included between July 2017 and January 2018. We randomly selected households from three administrative units (kebeles) in Wonago district in Ethiopia.OutcomesData on incidence of illnesses were collected by interviewing the mothers of the children every second week, in 6 months. Incidence densities per child-week of observation were calculated, and predictors or recurrent illnesses were evaluated in multilevel Poisson regression models.ResultsOut of 903 children, 882 were included (97.6%). At least one illness was experienced among 87.3% of the children. Overall illness incidence rate was 19.7 episodes per 100 child-weeks, 95% CI 18.4 to 20.7. The incidence rate of fever symptoms was 5.5 episodes per 100 child-weeks; of acute respiratory infections (ARIs) 4.2 episodes per 100 child-weeks; of diarrhoea, 3.4 episodes per 100 child-weeks. In the multilevel analysis, household wealth status, child age, child nutritional status, source of drinking water, place for cooking and number of children below 5 years of age in the household were main risk factors for illnesses.ConclusionsChildren below 5 years of age in Ethiopia often experience fever, ARIs and diarrhoea. The identified risk factors were related to poverty and highlighted the importance of preventive measures to reduce the incidence of these diseases.
| S-EPMC11423750 | biostudies-literature
Project description:BackgroundFollowing delivery by caesarean section, surgical site infection is the most common infectious complication. Despite a large number of caesarean sections performed at Debre Markos Referral Hospital, there was no study documenting the incidence of surgical site infection after caesarean section. Therefore, this study aimed to estimate the incidence of surgical site infection following caesarean section at Debre-Markos Referral Hospital in Amhara region, North-west Ethiopia.MethodsA prospective cohort study was conducted among 520 pregnant women who had a caesarean section between March 28, 2019 and August 31, 2019. Preoperative, intraoperative, and postoperative data were collected using a standardized questionnaire. Data was entered using EpiData™ Entry Version 4.1 software and analyzed using R Version 3.6.1 software. A descriptive analysis was conducted using tables, interquartile ranges and median. The time to development of surgical site infection was estimated using Kaplan-Meier method. The Cox regression model for bivariable and multivariable analyses was done. Adjusted Hazard Ratio (AHR) with 95% Confidence Interval (CI) was reported to show the strength of association.ResultThe mean age of the study cohort was 27.4 ± 4.8 years. The overall cumulative incidence of surgical site infection was 25.4% with an incidence of 11.7 (95% CI:9.8,13.9) per 1000 person/days. Not able to read and write (AHR = 1.30,95% CI:1.19,2.11), no antenatal care (AHR = 2.16, 95%CI:1.05,4.53), previous history of CS (AHR = 1.21, 95% CI:1.11,2.31), HIV positive (AHR = 1.39, 95% CI:1.21,2.57), emergency procedure (AHR = 1.13, 95% CI:1.11,2.43), vertical type of incision (AHR = 2.60, 95% CI:1.05,6.44), rupture of membrane (AHR = 1.50, 95% CI:1.31,1.64), multiple vaginal examination (AHR = 1.88, 95% CI: 1.71, 3.20) were significant predictors of surgical site infection in this study.ConclusionThis study concluded that the incidence of surgical site infection following caesarean section was relatively high compared to previous studies. Not able to read and write, have no ante natal care, previous history of caesarean section, HIV, emergency surgery, vertical type of incision, rupture of membranes before caesarean section, and multiple vaginal examinations were significant predictors of surgical site infection in this study. Therefore, intervention programs should focus on and address the identified factors to minimize and prevent the infection rate after caesarean section.
| S-EPMC7708170 | biostudies-literature
Project description:BackgroundOur objective was to assess the performance of machine learning methods to predict post-operative delirium using a prospective clinical cohort.MethodsWe analyzed data from an observational cohort study of 560 older adults (≥ 70 years) without dementia undergoing major elective non-cardiac surgery. Post-operative delirium was determined by the Confusion Assessment Method supplemented by a medical chart review (N = 134, 24%). Five machine learning algorithms and a standard stepwise logistic regression model were developed in a training sample (80% of participants) and evaluated in the remaining hold-out testing sample. We evaluated three overlapping feature sets, restricted to variables that are readily available or minimally burdensome to collect in clinical settings, including interview and medical record data. A large feature set included 71 potential predictors. A smaller set of 18 features was selected by an expert panel using a consensus process, and this smaller feature set was considered with and without a measure of pre-operative mental status.ResultsThe area under the receiver operating characteristic curve (AUC) was higher in the large feature set conditions (range of AUC, 0.62-0.71 across algorithms) versus the selected feature set conditions (AUC range, 0.53-0.57). The restricted feature set with mental status had intermediate AUC values (range, 0.53-0.68). In the full feature set condition, algorithms such as gradient boosting, cross-validated logistic regression, and neural network (AUC = 0.71, 95% CI 0.58-0.83) were comparable with a model developed using traditional stepwise logistic regression (AUC = 0.69, 95% CI 0.57-0.82). Calibration for all models and feature sets was poor.ConclusionsWe developed machine learning prediction models for post-operative delirium that performed better than chance and are comparable with traditional stepwise logistic regression. Delirium proved to be a phenotype that was difficult to predict with appreciable accuracy.
| S-EPMC7878663 | biostudies-literature
Project description:Staphylococcus aureus is a predominant cause of post-operative surgical site infections and persistent bacteremia. Here, we describe a patient who experienced three episodes of S. aureus infection over a period of 4 months following a total knee arthroplasty. The initial bloodstream isolate (SAB-0429) was a clonal complex 5 (CC5) and methicillin-resistant S. aureus (MRSA), whereas two subsequent isolates (SAB-0485 and SAB-0495) were CC5 isolates but methicillin-sensitive S. aureus. The two latter isolates harbored a plasmid encoding three superantigen genes that were not present in the primary MRSA isolate. SAB-0485 and SAB-0495 both expressed the plasmid-encoded staphylococcal enterotoxin R exotoxin and demonstrated increased superantigen activity compared with SAB-0429. Compared to SAB-0429, the latter isolates also demonstrated an increased bacterial burden in a mouse bacteremia model that was dependent on increased interferon-γ production. Curing of the plasmid from SAB-0485 reduced this virulence phenotype. These findings suggest that the superantigen exotoxins may provide a selective advantage in chronic post-surgical infections.IMPORTANCEIn this study, we investigated bacterial isolates from a patient who experienced three recurrent S. aureus infections over a 4 month period following total knee arthroplasty. Genomic and phenotypic characterization of these isolates revealed that they all belonged to clonal complex 5, yet the latter two strains contained an additional plasmid encoding superantigen exotoxins. Subsequent experimental infection experiments in mice demonstrated that the plasmid-encoded superantigens exacerbated bacteremia by promoting liver abscess formation. These experiments suggest that despite appropriate antibiotic therapy, bacterial superantigens may be able to promote persistent infection following post-surgery.
| S-EPMC11895439 | biostudies-literature
Project description:BACKGROUND:Perioperative vedolizumab (VDZ) and anti-tumour necrosis factor (TNFi) therapies are implicated in causing post-operative complications in inflammatory bowel disease (IBD). AIM:To compare the risk of surgical site infections (SSIs) between VDZ- and TNFi-treated IBD patients in propensity-matched cohorts. METHODS:The Optum Research Database was used to identify IBD patients who received VDZ or TNFi within 30 days prior to abdominal surgery between January 2015 and December 2016. The date of IBD-related abdominal surgery was defined as the index date. SSIs were determined by ICD-9/10 and CPT codes related to superficial wound infections or deep organ space infections after surgery. Propensity score 1:1 matching established comparable cohorts based on VDZ or TNFi exposure before surgery based on evidence-based risk modifiers. RESULTS:The propensity-matched sample included 186 patients who received pre-operative biologic therapy (VDZ, n = 94; TNFi, n = 92). VDZ and TNFi cohorts were similar based on age, gender, IBD type, concomitant immunomodulator exposure, chronic opioid or corticosteroid therapy, Charlson Comorbidity Index and malnutrition. VDZ patients were more likely to undergo an open bowel resection with ostomy. After propensity score matching, there was no significant difference in post-operative SSIs (TNFi 12.0% vs VDZ 14.9%, P = 0.56). Multivariable analysis indicated that malnutrition was the sole risk factor for developing SSI (OR 3.1, 95% CI 1.11-8.71) regardless of the type of biologic exposure. CONCLUSION:In the largest, risk-adjusted cohort analysis to date, perioperative exposure to VDZ therapy was not associated with a significantly higher risk of developing an SSI compared to TNFi therapy.
| S-EPMC6043399 | biostudies-literature
Project description:Every surgical wound is colonized by bacteria, but only a small percentage displays symptoms of infection. The distribution of pathogens isolated in surgical site infections has not significantly changed over the last decades. Staph. Aureus, Coag(-) Staphylococci, Enterococcus spp and E. Coli are the main strains appearing. In addition, a continuously rising proportion of surgical site infections caused by resistant bacterial species (MRSA, C. Albicans) has been reported.This prospective and randomized clinical study was performed in the 1st Surgical Clinic of Sismanoglion General Hospital of Athens, from February 2009 to February 2015. Patients undergoing elective surgery in the upper or lower digestive system were randomized to receive antimicrobial treatment as chemoprophylaxis. Each patient filled a special monitoring form, recording epidemiological data, surgery related information, surgical site infections (deep and superficial), as well as postoperative morbidity (urinary and respiratory infections included). The monitoring of patients was carried by multiple visits on a daily basis during their hospitalization and continued after they were discharged via phone to postoperative day 30.Our overall SSI incidence was 4,3% (31patients out of a whole of 715 patients). Specifically, the incidence of SSIs for scheduled surgery of the upper GI tract was 2,2% (11 out of 500 patients) and for the lower GI tract was 9,3% (20 out of 215 patients). Seven main pathogens were isolated from patients with SSIs: Escherichia coli, Klebsiella pneumoniae, Enterobacter cloacae, Pseudomonas aeruginosa, Bacteroides fragilis, Staphylococcus aureus and Enterococcus faecalis. Their growth rates were respectively: S. Aureus (17,3%), E. faecalis (19,5%), P. aeruginosa (10,5%), B. Fragilis (13,4%) E. coli (20,4%), Enterobacter cloacae (9,1%) and K. Pneumoniae (9,8%). In addition, all the SSIs were found to be multimicrobial. Several studies have already revealed that patient characteristics and coexisting morbidities such as obesity, smoking, heart or renal failure, pre-existing localized infections and patients' age (especially if age exceeds 65) seem to be independent prognostic factors for surgical field infections. Additionally, classification of the surgical wound, surgical operation complexity, preoperative hospitalization, prolongation of surgical time and need for transfusions have been proved to differentiate the incidence of SSIs.In conclusion, surgical site infections are important complications affecting the healthcare services, the cost of hospitalization and the patient himself. Future thorough studies are expected to reveal much more data, regarding predisposing and precautionary patient and hospital characteristics.
| S-EPMC5524225 | biostudies-other