Predictors of wound infection in hip and knee joint replacement: results from a 20 year surveillance program

107

Background Patients with diabetes have increased risk of infections and wound complications after total knee arthroplasty (TKA). Glycemic markers identifying patients at risk for complications after TKA have not yet been elucidated. Questions/purposes We aimed to determine the correlations among four commonly used glycemic markers and to identify the glycemic markers most strongly associated with the occurrence of surgical site infections and postoperative wound complications in patients with diabetes mellitus after undergoing TKA. Methods Our retrospective study included 462 patients with diabetes, who underwent a total of 714 TKAs. Blood levels of glycemic markers, including preoperative fasting blood glucose (FBG), postprandial glucose (PPG2), glycated hemoglobin (HbA 1c ), and levels obtained from random glucose testing on postoperative days 2, 5, and 14, were collected on all patients as part of a medical clearance program and an established clinical pathway for patients with diabetes at our center. Complete followup was available on 93% (462 of 495) of the patients. Correlations among markers were assessed. Associations between the markers and patient development of complications were analyzed using multivariate regression analyses of relevant cutoff values. We considered any of the following as complications potentially related to diabetes, and these were considered study endpoints: surgical site infection (superficial and deep) and wound complications (drainage, hemarthrosis, skin necrosis, and dehiscence). During the period of study, there were no fixed criteria applied to what levels of glycemic control patients with diabetes needed to achieve before undergoing arthroplasty, and there were wide ranges in the levels of all glycemic markers; for example, whereas the mean HbA 1c level was 7%, the range was 5% to 11.3%.Each author certifies that he or she, or a member of his or her immediate family, has no funding or commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc) that might pose a conflict of interest in connection with the submitted article. All ICMJE Conflict of Interest Forms for authors and Clinical Orthopaedics and Related Research 1 editors and board members are on file with the publication and can be viewed on request. Each author certifies that his or her institution has approved the human protocol for this investigation, that all investigations were conducted in conformity with ethical principles of research, and that informed consent was obtained. This work was performed at the Joint Reconstruction Center, Seoul National University Bundang Hospital, Seoul, Republic of Korea. Results There were positive correlations among the levels of the four glycemic markers; the strongest correlation was found between the preoperative HbA 1c and PPG2 levels (R = 0.502, p \ 0.001). After controlling for potential confounding variables using multivariate analysis, the HbA 1c cutoff level of 8 (odds ratio [OR], 6.1; 95% confidence interval...

Section: Discussionmentioning

confidence: 62%

Do Glycemic Markers Predict Occurrence of Complications After Total Knee Arthroplasty in Patients With Diabetes?

Hwang

Kim

Bamne

et al. 2015

107

“…Saleh et al [8] reported 19 out of the 33 (58%) study subjects with superficial surgical site infection developed deep wound infection. Of the preoperative, intraoperative, and postoperative factors examined, only hematoma formation and days of postoperative drainage were noteworthy predictors of superficial surgical site infection.…”

Section: Discussionmentioning

confidence: 99%

“…One study suggests deep wound infection after total knee and hip arthroplasty correlates with superficial surgical site infection [8]. Saleh et al [8] reported 19 out of the 33 (58%) study subjects with superficial surgical site infection developed deep wound infection.…”

Section: Discussionmentioning

confidence: 99%

“…Postoperative hematoma formation is a well-known complication after hip and knee arthroplasty [1,2,8,9] and in one study was associated with superficial and deep infection [8]. Large hematomas that cause persistent drainage are rare after total joint arthroplasty but may require a return to the operating room for evacuation, irrigation, débridement, and wound closure.…”

Section: Introductionmentioning

confidence: 99%

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Infection Associated With Hematoma Formation After Shoulder Arthroplasty

Cheung

Sperling

Cofield

2008

129

Hematoma formation requiring operative treatment after shoulder arthroplasty may be associated with higher patient morbidity. We therefore determined whether there was an association of hematoma formation requiring operative treatment with deep infection after shoulder arthroplasty. Between 1978 and 2006, we performed 4147 shoulder arthroplasties in 3643 patients. Of these, 12 shoulders (0.3%) underwent reoperation for hematoma formation. The mean time interval from arthroplasty to surgery for the hematoma was 7 days (range, 0.5-31 days). Among nine cases in which cultures were taken, six had positive cultures; the organisms included Propionibacterium acnes in three, Staphylococcus epidermidis in one, Streptococcus species in one, and Staphylococcus epidermidis with Peptostreptococcus in one. The minimum followup was 12 months (mean, 68 months; range, 12 to 294 months

“…Few studies adhere to these criteria [3,30,35,37]. This requires 12-month followup and we were able to classify cases into deep and superficial infection based on the Centers for Disease Control and Prevention criteria.…”

Section: Discussionmentioning

confidence: 99%

Relationship Between Perioperative Urinary Tract Infection and Deep Infection After Joint Arthroplasty

Koulouvaris¹,

Sculco²,

Finerty³

et al. 2009

Surgical wound infection is a serious and potentially catastrophic complication after joint arthroplasty. Urinary tract infection is a common infection that creates a potential reservoir of resistant pathogens and increases patient morbidity. We asked whether treated preoperative and postoperative urinary tract infections are risk factors for deep joint infection. We examined the medical records of 19,735 patients. The minimum had joint infections develop. Of these, three had preoperative and four had postoperative urinary tract infections. The majority of bacteria were not enteric. The bacteria in the two types of infections were not identical. Control subjects were randomly selected from a list of patients matched with patients having infections. Of these, eight had preoperative and one had postoperative urinary tract infections. We found no association between the preoperative urinary tract infection (odds ratio, 0.341; 95% confidence interval, 0.086-1.357) or postoperative urinary tract infection (odds ratio, 4.222; 95% confidence interval, 0.457-38.9) and wound infection. Only one of the 58 patients with wound infections had a urinary tract infection with the same bacteria in both infections. Given the infection rate was very low (0.29%), the power of the study was only 25%. Although limited, the data suggest patients with urinary tract infections had no more likelihood of postoperative infection. We believe treated urinary tract infection should not be a reason to delay or postpone surgery. Level of Evidence: Level III, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.