Preoperative HbA1c Levels Research Articles

Effects of Intravenous Dexamethasone on Glycemic Control in Patients With Type 2 Diabetes Mellitus After Total Knee Arthroplasty.

We sought to determine whether administrations of intravenous (IV) dexamethasone jeopardize blood glycemic control, increase rates of postoperative complications, and diabetic medication change after TKA. This retrospective study included 427 patients with DM who underwent TKA. Patients were divided into two groups according to the use of IV dexamethasone (Dexa and No Dexa). For the Dexa, IV dexamethasone (5mg) was administered twice (surgery day, postoperative day 1). Blood glucose level until postoperative day 5, whether the mean blood glucose level was ≥200 mg/dL or not, the rate of a diabetic medication change, and postoperative complications (surgical site infection, delayed wound healing) were analyzed. The adverse effects of IV dexamethasone on glycemic control were limited to the day of injection. The mean blood glucose level was 168.8 mg/dL and 204.4 mg/dL on operation day and 193.0 mg/dL and 210.5 mg/dL on postoperative day 1 in the No Dexa and the Dexa, respectively. High preoperative glycated hemoglobin (HbA1c) levels, but not IV dexamethasone administration, increased the risk of postoperative blood glucose level ≥200 mg/dL (odds ratio [OR], 2.810) and diabetic medication change (OR, 3.635, P < .001). A preoperative HbA1c level of >7.05% was associated with the risk of diabetic medication change. There was increase of postoperative complications (OR, 0.693, P= .552). IV dexamethasone have transient effects on increasing the blood glucose level after TKA in patients with DM. However, patients with a preoperative HbA1c level of ≥7.05% may need to change their diabetic medication after TKA, regardless of IV dexamethasone administration.

Predictive role of preoperative hemoglobin A1c levels on atrial fibrillation developing after coronary artery bypass graft surgery

Objective: Atrial fibrillation (AF) is the most common cardiac arrhythmia seen after coronary artery bypass(CABG) surgery. Hemoglobin A1c (HbA1c) levels known to have correlation with the developement of post operative atrial fibrillation (POAF) after CABG surgery. In our study we investigated the predictability of preoperative HbA1c levels for postoperative POAF developement in patients who underwent isolated on-pump CABG operation in our clinic. Method: We retrospectiveley studied 85 isolated on-pump CABG patients. Male to female ratio was 3:1 and mean age was 63-year old. All patients monitored in intensive care unit and than service for the occurance of AF. Relationship between HbA1c levels and developement of AF after surgery was evaluated. Results: This study designed as cross-sectional array and performed in our clinic. 85 patients included in the study. Mean age of cohort was 63.5 years and ratio of the male to female found 3:1. During postoperative monitoring period, 22 patients (25.8%) developed POAF (p>0.05) . HbA1c levels found significiantly high in POAF- positive group (p=0.003). Conclusions: According to our data, preoperative HbA1c levels could be used as a predictor of post operative AF in patients undergoing CABG surgery.

Preoperative HbA1c>8% Is Associated With Poor Outcomes in Lumbar Spine Surgery: A Michigan Spine Surgery Improvement Collaborative Study.

Preoperative hemoglobin A1c (HbA1c) is a useful screening tool since a significant portion of diabetic patients in the United States are undiagnosed and the prevalence of diabetes continues to increase. However, there is a paucity of literature analyzing comprehensive association between HbA1c and postoperative outcome in lumbar spine surgery. To assess the prognostic value of preoperative HbA1c>8% in patients undergoing elective lumbar spine surgery. The Michigan Spine Surgery Improvement Collaborative (MSSIC) database was queried to track all elective lumbar spine surgeries between January 2018 and December 2019. Cases were divided into 2 cohorts based on preoperative HbA1c level (≤8% and>8%). Measured outcomes include any complication, surgical site infection (SSI), readmission (RA) within 30 d (30RA) and 90 d (90RA) of index operation, patient satisfaction, and the percentage of patients who achieved minimum clinically important difference (MCID) using Patient-Reported Outcomes Measurement Information System. We captured 4778 patients in this study. Our multivariate analysis demonstrated that patients with HbA1c>8% were more likely to experience postoperative complication (odds ratio [OR] 1.81, 95% CI 1.20-2.73; P=.005) and be readmitted within 90 d of index surgery (OR 1.66, 95% CI 1.08-2.54; P=.021). They also had longer hospital stay (OR 1.12, 95% CI 1.03-1.23; P=.009) and were less likely to achieve functional improvement after surgery (OR 0.64, 95% CI 0.44-0.92; P=.016). HbA1c>8% is a reliable predictor of poor outcome in elective lumbar spine surgery. Clinicians should consider specialty consultation to optimize patients' glycemic control prior to surgery.

The impact of preoperative glycated hemoglobin (HbA1c) on postoperative complications after elective major abdominal surgery: a meta-analysis

BackgroundDiabetes is a risk factor for postoperative complications. Previous meta-analyses have shown that elevated glycated hemoglobin (HbA1c) levels are associated with postoperative complications in various surgical populations. However, this is the first meta-analysis to investigate the association between preoperative HbA1c levels and postoperative complications in patients undergoing elective major abdominal surgery.MethodsPRISMA guidelines were adhered to for this study. Six databases were searched up to April 1, 2020. Primary studies investigating the effect of HbA1c levels on postoperative complications after elective major abdominal surgery were included. Risk of bias and quality of evidence assessments were performed. Data were pooled using a random effects model. Meta-regression was performed to evaluate different HbA1c cut-off values.ResultsTwelve observational studies (25,036 patients) were included. Most studies received a ‘good’ and ‘moderate quality’ score using the NOS and GRADE, respectively. Patients with a high HbA1c had a greater risk of anastomotic leaks (odds ratio [OR]: 2.80, 95% CI [1.63, 4.83], P < 0.001), wound infections (OR: 1.21, 95% CI [1.08, 1.36], P = 0.001), major complications defined as Clavien-Dindo [CD] 3–5 (OR: 2.16, 95% CI [1.54, 3.01], P < 0.001), and overall complications defined as CD 1–5 (OR: 2.12, 95% CI [1.48, 3.04], P < 0.001).ConclusionsAn HbA1c between 6% and 7% is associated with higher risks of anastomotic leaks, wound infections, major complications, and overall postoperative complications. Therefore, guidelines with an HbA1c threshold > 7% may be putting pre-optimized patients at risk. Future randomized controlled trials are needed to explore causation before policy changes are made.

Minimally invasive esophagectomy may contribute to low incidence of postoperative surgical site infection in patients with poor glycemic control.

High preoperative hemoglobin A1c (HbA1c) levels have been suggested to increase complications after esophagectomy. Minimally invasive esophagectomy (MIE) is less invasive than open esophagectomy (OE) and may reduce postoperative complications. However, it has not been established whether MIE contributes to low morbidity in patients with high preoperative HbA1c levels. Thus, the current study aimed to elucidate the effect of preoperative HbA1c levels on the incidence of complications each after OE and MIE. A total of 280 patients who underwent OE and 304 patients who underwent MIE for esophageal cancer between April 2005 and April 2020 were retrospectively analyzed. The OE and MIE groups were further divided into two groups according to their preoperative HbA1c levels (< 6.9%, ≥ 6.9%). Patients with high HbA1c levels had a significantly higher incidence of surgical site infections (SSIs) after OE (P = 0.0048). Multivariate analysis demonstrated that a high HbA1c level was an independent risk factor for frequent SSIs after OE (hazard ratio 2.52; 95% confidence interval, 1.101- 5.739; P = 0.029). On the contrary, a high HbA1c level did not affect the incidence of SSI after MIE (P = 1.00). A high HbA1c level was not associated with the incidence of morbidities other than SSI after OE and MIE. A high preoperative HbA1c level significantly increased SSI risk after OE but not after MIE. It was suggested that lower invasiveness of MIE could contribute to a low incidence of SSI, even in patients with poor preoperative glycemic control.

199. HbA1c and BMI are modifiable risk factors for reducing wound complications but do not influence risk of pseudarthrosis

<h3>BACKGROUND CONTEXT</h3> Patients with diabetes mellitus (DM) undergoing posterior spinal fusion (PSF) with elevated HbA1cs are at higher risk of postoperative complications than those with lower HbA1cs. DM patients with an HbA1c >7.05% are prone to postoperative complications such as wound complications (WC). Pseudarthrosis (PA) is another complication for PSF and requires further insight in determining risk factors for DM. <h3>PURPOSE</h3> To determine if DM patients with higher preoperative HbA1c levels will have higher rates of WC and PA. <h3>STUDY DESIGN/SETTING</h3> Single-center retrospective cohort study. <h3>PATIENT SAMPLE</h3> This study included 229 DM patients. <h3>OUTCOME MEASURES</h3> Patient demographics, osteopenia, preoperative HbA1c, WC, PA, and levels-fused (LF). <h3>METHODS</h3> Included: DM patients undergoing thoracolumbar PSF from 2014-2019 with preoperative HbA1C levels, and a minimum 1-year postoperative follow-up. PA was defined by the treating surgeon via clinical presentation, radiographs and postoperative CT scan with minimum 1-year postoperative interval. WC included dehiscence, seroma requiring aspiration or infection of the surgical site. Excluded: Patients undergoing LLIFs and ALIFs or diagnosed with prior pars fracture, spinal tumor, ankylosing spondylitis, fracture and infection. Relationships between complications and HbA1c were determined using t-test, chi-squared analyses and multivariate regressions (α=0.05). In risk factors, the cutoff HbA1C value as a predictor for multiple postoperative complications was identified via receiver operating characteristic (ROC) analyses using Youden's index. <h3>RESULTS</h3> A total of 229 patients met these criteria. Age (Normal: 65.4±11.0, PA: 63.0±8.2, p=0.249; Normal: 65.2±10.6, WC: 64.5±9.7, p=0.753), CCI (Normal: 4.6±2.0, PA: 4.0±1.2, p=0.06; Normal: 4.6±1.9., WC: 4.6±1.7, p=0.761), gender, percent female, (Normal: 57%, PA: 47%, p=0.286; Normal: 55%, WC: 58%, p=0.829), osteopenia (Normal: 3%, PA:3%, p=0.968; Normal: 3%, WC: 0.0%, p=0.377), and smoker status (Normal: 11%, PA: 16%, p=0.44; Normal: 11%, WC: 12%, p=0.915) did not have a significant impact in the tested postoperative complications. Mean HbA1c (7.6±1.5%, p=0.001), LF (3.9±3.2, p=0.024) and BMI (35.8±7.4, p=0.004) in patients with WC were significantly higher than those without WC (HbA1C: 6.8±1.0%; LF: 2.5±2.9 BMI: 31.7±6.7). HbA1c (OR: 1.7 [1.2-2.5], p=0.005), BMI (OR: 1.1 [1.0-1.2], p=0.007) and LF (OR: 1.1[1.1-1.3], p=0.031) was an independent risk factor WC. In those with PA, mean HbA1c (7.0±1.3, p=0.289) was not significantly higher than those without PA (HbA1C:7.0±1.1). HbA1c (OR: 1.039 [0.73-1.478], p=0.831) was not an independent risk factor for PA.ROC analyses demonstrated HbA1c>7.05% (AUC: 0.693[0.587-0.800], p=0.001], BMI>32.92 (AUC: 0.664[0.555-0.772], p=0.007) and >1.5 LF (AUC: 0.626[0.502-0.750], p=0.036) as fair predictive models for WC. <h3>CONCLUSIONS</h3> Preoperative HbA1C>7.05%, BMI>32.92 and LF>1.5 are independent risk factors of WC; however, neither of these are predictors for PA in diabetics who had PSF. Regardless, DM patients undergoing PSF should strive to lower their HbA1c<7.05% and BMI<32.92 before surgery. <h3>FDA DEVICE/DRUG STATUS</h3> This abstract does not discuss or include any applicable devices or drugs.

The Impact of Hemoglobin A1c on Post-operative Outcomes in Bariatric Surgery Patients

Pre-operative hemoglobin (Hb) A1c levels ≥ 8% can lead to increased post-operative complications. In bariatric surgery patients, attaining a pre-operative HbA1c < 8% can be a challenge. The purpose of this study was to identify the association of pre-operative HbA1c on post-operative outcomes in bariatric surgery patients. A retrospective chart review was conducted on diabetic patients (HbA1c ≥ 6.5%) who underwent primary bariatric surgery at a single institution between the years 2013 and 2019. Patients were divided into two groups based on their pre-operative HbA1c levels of < 8% and ≥ 8%. Univariate analyses were performed to determine an association between pre-operative HbA1c levels and post-operative outcomes. There were 351 primary diabetic bariatric surgery patients, 270 HbA1c <8%, and 81 HbA1c ≥ 8%. Procedure selection was significantly different between the HbA1c < 8% and HbA1c ≥ 8% group (49.3% sleeve, 50.4% bypass and 0.4% band versus 43.2% sleeve, 53.1% bypass and 3.7% band respectively, P < 0.04). There was no statistically significant difference in any 30-day post-operative outcome between the two groups. Post-operative HbA1c was significantly less in the HbA1c < 8% group at 3-6 month (6.0% ± 0.9 versus 7.4% ± 1.4, P <0.001) and 6-12 month (6.0% ± 1.1 versus 7.2% ± 1.4, P <0.001) follow-up. This study demonstrated no difference in post-operative outcomes of primary bariatric surgery patients based on a HbA1c cut-off of 8%. This highlights that bariatric surgery can be considered and safely performed in patients with a pre-operative HbA1c ≥ 8%.

Hemoglobin A1c in Patients with Diabetes Predict Long-Term Mortality Following Coronary Artery Surgery.

Objective: to estimate the association between preoperative hemoglobin A1c (HbA1c) levels below and above 7%, and the rate of all-cause mortality (ACM) in diabetes mellitus (DM) patients after coronary artery bypass grafting (CABG) within a ten-year follow-up period. Methods: we collected data on patient HbA1c levels that were measured up to 3 months prior to isolated CABG in consecutive patients with DM, and analyzed the rates of ACM over a median of a 5.9-year post-operative period. Results: preoperative HbA1c levels were collected in 579 DM patients. The mean HbA1c was 8.0 ± 1.7%, where 206 (35.6%) patients had an HbA1c ≤ 7% and 373 (64.4%) had an HbA1c > 7%. During the follow-up period, mortality rates were 20.4% and 28.7% in the HbA1c ≤ 7% and HbA1c > 7% groups, respectively (Kaplan-Meier estimates, log-rank p = 0.01). Multivariable Cox proportional hazards regression, adjusted for age, gender, smoking status, chronic obstructive pulmonary disease, hypertension, chronic renal failure, old myocardial infarction, number of coronary artery bypass surgeries, and post-operative glycemic control, showed a hazard ratio of 2.67 for long-term ACM (p = 0.001) in patients with HbA1c > 7%. Conclusions: DM patients with high HbA1c levels prior to CABG are at higher risk for long-term complications, especially late ACM.

Association between preoperative level of hemoglobin A1c and the incidence of acute kindey injury after coronary artery bypass grafting surgery: a cohort study

BackgroundThe development of acute kidney injury (AKI) is an important indicator of clinical outcomes after cardiac surgery. Elevated preoperative hemoglobin A1c level may be associated with acute kidney injury in patients undergoing coronary artery bypass grafting. This study will investigate the association of preoperative HbA1c levels with AKI after isolated coronary artery bypass grafting (CABG).ResultsForty patients undergoing elective CABG were enrolled in this cohort study. Patients are divided into 2 equal groups who underwent isolated coronary artery bypass grafting (CABG): patients with preoperative HbA1c 5.7–6.4% (group A) (prediabetics) and patients with preoperative HbA1c > or = 6.5% (group B) (diabetics). Acute kidney injury according to the Kidney Disease: Improving Global Outcomes criteria developed in 11 patients (27.5%). There was a significant difference between the two groups as regards postoperative urinary NGAL, creatinine level on the 1st day, creatinine level on the 2nd day, urine output on the 1st day, and urine output on the 2nd day (p value was 0.001, 0.002, 0.006, 0.0002, and 0.012 respectively). Postoperative ICU stay duration was statistically significant in the diabetic group (P value 0.009). The need for renal replacement therapy was higher in the diabetic group, but it was not statistically significant between the two groups. Roc analysis shows AUC 0.922 with a significant p value (< 0.0001) and cut of value (≥ 7) with sensitivity 81.82 and specificity 93.10.ConclusionThis study revealed that elevated preoperative HbA1c level above 7% showed an increase in incidence of post CABG acute kidney injury along with increase length of postoperative ICU stay.

Glycosylated hemoglobin levels and the risk for contrast-induced nephropathy in diabetic patients undergoing coronary arteriography/percutaneous coronary intervention

BackgroundsDiabetes mellitus is an independent risk factor for Contrast-induced nephropathy (CIN) in patients undergoing Coronary arteriography (CAG)/percutaneous coronary intervention (PCI). Glycosylated hemoglobin (HbA1c) is the gold standard to measure blood glucose control, which has important clinical significance for evaluating blood glucose control in diabetic patients in the past 3 months. This study aimed to assess whether preoperative HbA1c levels in diabetic patients who received CAG/PCI impacted the occurrence of postoperative CIN.MethodsWe reviewed the incidence of preoperative HbA1c and postoperative CIN in 670 patients with CAG/PCI from January 1, 2020 to October 30, 2020 and divided the preoperative HbA1c levels into 5 groups. Blood samples were collected at admission, 48 h and 72 h after operation to measure the Scr value of patients. Categorical variables were compared using a chi-square test, and continuous variables were compared using an analysis of variance. Fisher’s exact test was used to compare the percentages when the expected frequency was less than 5. Univariable and multivariable logistic regression analysis was used to exclude the influence of confounding factors, and P for trend was used to analyze the trend between HbA1c levels and the increased risk of CIN.ResultsPatients with elevated HbA1c had higher BMI, FBG, and LDL-C, and they were more often on therapy with hypoglycemic agents, Insulin and PCI. They also had higher basal, 48 h and 72 h Scr. The incidence of CIN in the 5 groups of patients were: 9.8, 11.9, 15.2, 25.3, 48.1%. (p < 0.0001) The multivariate analysis confirmed that in the main high-risk subgroup, patients with elevated HbA1C levels (≥8.8%) had a higher risk of CIN disease. Trend test showed the change of OR (1.000,1.248,1.553,2.625,5.829).ConclusionsStudies have shown that in diabetic patients undergoing CAG/PCI, elevated HbA1c is independently associated with the risk of CIN, and when HbA1c > 9.5%, the incidence of CIN trends increase. Therefore, we should attach great importance to patients with elevated HbA1c at admission and take more active measures to prevent CIN.

Pre-operative glycaemic control and long-term survival in diabetic patients after coronary artery bypass grafting.

We analysed the Veteran Affairs data to evaluate the association of pre-operative glycated haemoglobin (HbA1c) and long-term outcome after isolated coronary artery bypass grafting (CABG). Veterans with diabetes mellitus and isolated CABG (2006-2018) were divided into 4 groups (I: HbA1c <6.5%, II: HbA1c 6.5-8, III 8-10% and IV: HbA1c >10%). The relationship of pre-operative HbA1c and long-term survival was evaluated with a multivariable Cox proportional hazards model and reported as hazard ratios (HR). The cumulative incidence of secondary end-points [myocardial infarction (MI) and repeat revascularization (percutaneous intervention)] for each group was modelled as competing events with cause-specific Cox proportional hazards models. Overall, 16190 patients (mean age 64.9 years, male 98%; insulin dependent 53%) with diabetes mellitus underwent isolated CABG. We observed 19.4%, 45.4%, 27% and 8.2% patients in groups I, II, III and IV, respectively. Patients with HbA1c >10% were the youngest (mean age 60.9 years) and had high rates of Insulin dependence (78%). In patients with HbA1c >10%, improvement in levels was observed in 76%. The median follow-up observed was 5.8 (3.2-8.8) years. Compared to the study mean HbA1c (7.3%), mortality rate increased with HbA1c levels >8%, and especially with pre-operative HbA1c levels >9%. Compared to patients with HbA1c <8%, HbA1c 8-10% and >10% were associated with increased MI (HR 1.24 and HR 1.39, respectively) and need for reintervention (HR 1.20 and HR 1.24, respectively). In patients undergoing CABG, pre-operative HbA1c >8% is associated with the increased risk of mortality and adverse cardiac events.

Surgical Outcomes in Urogynecology—Assessment of Perioperative and Postoperative Complications Relative to Preoperative Hemoglobin A1c—A Fellows Pelvic Research Network Study

Poor control of diabetes mellitus is a known predictor of perioperative and postoperative complications. No literature to date has established a hemoglobin A1c (HbA1c) cutoff for risk stratification in the urogynecology population. We sought to identify an HbA1c threshold predictive of increased risk for perioperative and postoperative complications after pelvic reconstructive surgery. This multicenter retrospective cohort study involving 10 geographically diverse U.S. female pelvic medicine and reconstructive surgery programs identified women with diabetes who underwent prolapse and/or stress urinary incontinence surgery from September 1, 2013, to August 31, 2018. We collected information on demographics, preoperative HbA1c levels, surgery type, complications, and outcomes. Sensitivity analyses identified thresholds of complications stratified by HbA1c. Multivariate logistic regression further evaluated the association between HbA1c and complications after adjustments. Eight hundred seven charts were identified. In this diabetic cohort, the rate of overall complications was 44.1%, and severe complications were 14.9%. Patients with an am HbA1c value of 8% or greater (reference HbA1c, <8%) had an increased rate of both severe (27.1% vs 12.8%, P < 0.001) and overall complications (57.6% vs 41.8%, P = 0.002) that persisted after multivariate logistic regression (odds ratio, 2.618; 95% confidence interval, 1.560-4.393 and odds ratio, 1.931; 95% confidence interval, 1.264-2.949, respectively). Mesh complications occurred in 4.6% of sacrocolpopexies and 1.7% of slings. The average HbA1c in those with mesh exposures was 7.5%. Preoperative HbA1c of 8% or higher was associated with a 2- to 3-fold increased risk of overall and severe complications in diabetic patients undergoing pelvic reconstructive surgery that persisted after adjustments.

The Effect of HbA1c Level on Gender-Specific Long-Term Morbidity and Mortality After Isolated Coronary Bypass in Poorly Controlled Diabetic Patients

Objective: The aim of this study is to evaluate the gender specific effects of the high HbA1c levels in poorly controlled diabetic patients undergoing isolated coronary artery bypass grafting (CABG) procedure on long term morbidity, mortality and re-revascularization (2nd intervention). Methods: This study was conducted on 532 (346 (65%) males and 186 (35%) females) diabetic patients who underwent CABG procedure at a single center between January 2010 and December 2013.The patients were separated into 4 groups according to gender and preoperative HbA1c level (%). The group1 consisted of females with HBA1c level ≤7(n=46); the group 2 comprised female with HbA1c level &amp;gt;7(n=140); the group 3 comprised men with HbA1c level ≤7(n=117); and the group 4 comprised men with HbA1c level &amp;gt;7(n=229). The groups were analyzed and compared for postoperative complications and mortality. Results: No statistically significant difference was found among the groups in HbA1c levels and gender with respect to postoperative infection and mortality (p&amp;gt;0.05). The HbA1c level was determined to be statically significant and required the 2ndintervention (p:0.001; 95% CI: 1.249 (1.055,1.478)). Conclusion: This study suggested that there was no difference in mortality rates after CABG among the groups although the current risk calculator modules stated otherwise. However, the HbA1c levels were associated with a need for a secondary intervention on long term follow up period.

Hysterectomy Complications Relative to HbA1c Levels: Identifying a Threshold for Surgical Planning

To evaluate whether diabetes diagnosis and level of diabetes control as reflected by higher preoperative glycosylated hemoglobin (HbA1c) levels are associated with increased complication rates after hysterectomy and to identify a threshold of preoperative HbA1c level past which we should consider delaying surgery owing to increased risk of complications. Retrospective cohort study. Hospitals in the Michigan Surgical Quality Collaborative between June 4, 2012, and October 17, 2017. Women with and without a diabetes diagnosis. Hysterectomy. Data on demographics, preoperative HbA1c values, surgical approach, composite postoperative complications, readmissions, emergency department visits, and reoperations were abstracted. The risk of a postoperative complication when diabetes was stratified by preoperative HbA1c level was evaluated in a sensitivity analysis, and independent associations were identified in a mixed, multivariate logistic regression model. We identified 41 286 hysterectomies performed at 70 hospitals to be included for analysis. The sensitivity analysis identified 4 groups of risk for postoperative complications: group 1: no diabetes diagnosis and no HbA1c value; group 2: no diabetes diagnosis, with HbA1c levels between 4% and 6.5%; group 3: diabetes diagnosis and no HbA1c value or HbA1c levels <9%; and group 4: diabetes diagnosis with HbA1c levels ≥9%. In the adjusted model, there were significant 32% and 34% increased odds of postoperative complications for groups 2 and 3, respectively, compared with group 1. There were more than 2-fold increased odds of complications for women with diabetes and a preoperative HbA1c level ≥9% (group 4) compared with the women in group 1. Diabetes diagnosis with preoperative HbA1c levels ≥9% had increased odds of complications compared with diabetes diagnosis with preoperative HbA1c levels <9%. Patients with well-controlled diabetes seemed to have increased odds of complications with laparoscopic surgery. Diabetes diagnosis and measurement of preoperative HbA1c levels provide risk stratification for postoperative complications after hysterectomy, with the highest observed effect among patients with diabetes with a preoperative HbA1c level ≥9%.

Strong for Surgery: Association Between Bundled Risk Factors and Outcomes After Major Elective Surgery in the VA Population.

Strong for Surgery (S4S) is a public health campaign focused on optimizing patient health prior to surgery by identifying evidence-based modifiable risk factors. The potential impact of S4S bundled risk factors on outcomes after major surgery has not been previously studied. This study tested the hypothesis that a higher number of S4S risk factors is associated with an escalating risk of complications and mortality after major elective surgery in the VA population. The Veterans Affairs Surgical Quality Improvement Program (VASQIP) database was queried for patients who underwent major non-emergent general, thoracic, vascular, urologic, and orthopedic surgeries between the years 2008 and 2015. Patients with complete data pertaining to S4S risk factors, specifically preoperative smoking status, HbA1c level, and serum albumin level, were stratified by number of positive risk factors, and perioperative outcomes were compared. A total of 31,285 patients comprised the study group, with 16,630 (53.2%) patients having no S4S risk factors (S4S0), 12,323 (39.4%) having one (S4S1), 2,186 (7.0%) having two (S4S2), and 146 (0.5%) having three (S4S3). In the S4S1 group, 60.3% were actively smoking, 35.2% had HbA1c > 7, and 4.4% had serum albumin < 3. In the S4S2 group, 87.8% were smokers, 84.8% had HbA1c > 7, and 27.4% had albumin < 3. Major complications, reoperations, length of stay, and 30-day mortality increased progressively from S4S0 to S4S3 groups. S4S3 had the greatest adjusted mortality risk (adjusted odds radio [AOR] 2.56, p = 0.04) followed by S4S2 (AOR 1.58, p = 0.02) and S4S1 (AOR 1.34, p = 0.02). In the VA population, patients who had all three S4S risk factors, namely active smoking, suboptimal nutritional status, and poor glycemic control, had the greatest risk of postoperative mortality compared to patients with fewer S4S risk factors.

Association Between Preoperative HbA1c Levels and Complications after Esophagectomy: Analysis of 15,801 Esophagectomies From the National Clinical Database in Japan.

To elucidate the association between preoperative hemoglobin A1c (HbAlc) levels and short-term outcomes after oncologic esophagectomy. Although diabetes mellitus is associated with an increased risk of postoperative morbidity in several types of surgery, the association of diabetes mellitus with short-term outcomes after esophagectomy has shown conflicting results. We analyzed 15,801 patients who underwent oncologic esophagectomy between 2015 and 2017 from the National Clinical Database. We evaluated the associations between preoperative HbA1c levels and short-term outcomes, using multivariable logistic regression and restricted cubic spline models. The cohort included 12,074, 1361, 1097, 909, and 360 patients with HbA1c levels of ≤5.9%, 6.0% to 6.4%, 6.5% to 6.9%, 7.0% to 7.9%, and ≥8.0%, respectively. There were value-dependent associations between HbA1c values and odds ratios for anastomotic leakage, surgical site infections, pneumonia, and composite outcomes. Compared with the HbA1c category of ≤5.9%, the categories of 7.0% to 7.9% and ≥8.0% were at higher risk for anastomotic leakage ( P < 0.001 and 0.031, respectively), the category of ≥8.0% was at higher risk for surgical site infections ( P = 0.001), the categories of 6.5% to 6.9% and 7.0% to 7.9% were at higher risk for pneumonia ( P = 0.016 and 0.002, respectively), and the categories of 7.0 to 7.9 and > 8.0% were at higher risk for composite outcomes (P < 0.001 and 0.001, respectively). Preoperative HbA1c levels are associated with the risk of postoperative complications after esophagectomy, and the threshold values differed among the outcomes. Preoperative HbA1c is useful in predicting the risk of postoperative complications.

Implication of preoperative glycosylated hemoglobin level on short term outcomes in diabetic patients undergoing coronary artery bypass grafting

Background: Diabetes mellitus is one of the significant risk factors for adverse outcomes after coronary artery bypass surgery. The glycosylated haemoglobin i.e. HbA1c is a reliable diagnostic test to know the long-term glycemic status. The objective of the study is to investigate the implication of preoperative HbA1c level on short term outcomes after coronary artery bypass grafting (CABG).Method: Total 218 patients were studied, and the data were collected retrospectively. Patients are distributed into group 1 with HbA1c≤7 (good glycemic control) and group 2 with HbA1c&gt;7 (poor glycemic control). The parameters studied for short term outcomes were revision due to bleeding, duration of mechanical ventilation, cerebrovascular accident (CVA), atrial fibrillation (AF), renal failure requiring dialysis, infective complications like sternal and leg wound infection, mediastinitis, pneumonia, urinary tract infection (UTI), sepsis; length of ICU stay and in-hospital mortality.Result: In comparison to group 1, patients of group 2 showed statistically significant more morbidity in view of short-term outcomes in this study.Conclusion: HbA1c&gt;7 is associated with statistically significant adverse short-term outcomes after CABG.

Short-Term Risk of Bilateral Internal Mammary Artery Grafting in Diabetic Patients

This study compares the morbidity and mortality at 30 days following the use of bilateral internal mammary arteries (BIMA) vs a single internal mammary artery (SIMA) at the time of coronary artery bypass grafting (CABG) in patients with a preoperative HbA1c. Patients undergoing CABG from January 2008 to December 2016 reported to the Society of Thoracic Surgeons database were retrospectively reviewed. The patients were divided into 2 groups: use of BIMA or use of SIMA and propensity matched. To assess the effect of preoperative HbA1c, both groups were further divided into 5 subgroups: patients without diabetes mellitus (DM), or patients with DM and a preoperative HbA1c level in one of four groups (< 7%, 7-9%, 9-11%, or >11%). The postoperative outcomes in both the BIMA and SIMA groups were compared. There were 700,504 and 28,115 patients with measured preoperative HbA1c levels in the SIMA and BIMA groups, respectively. Propensity score matching identified 23,635 comparable patients in each group for analysis. There was no difference in postoperative mortality between the BIMA and SIMA groups (1.3% vs 1.2%). The incidences of sternal wound infection (SWI) in patients undergoing placement of BIMA vs SIMA were: 0.8% vs 0.4% with no DM (P < 0.0001), 1.9% vs 1.0% with HbA1c < 7% (P < 0.001), 2.4% vs 1.2% with HbA1c 7-9% (P < 0.001), 2.8% vs 1.4% with HbA1c 9-11% (P = 0.02), 4.1% vs 1.5% with HbA1c > 11% (P = 0.01). Based on the incidence of SWI, BIMA is a reasonable approach with an HbA1c<7%.

2016 Research Grant Award Winner: The severity of preoperative HbA1c and predicting postoperative complications in spine surgery

BACKGROUND CONTEXT Anecdotally, diabetes mellitus (DM) is thought to be associated with higher perioperative complications. Fewer adverse events may occur when DM is well controlled. Hemoglobin A1c (HbA1c), which detects the prior 6 to 12 weeks of patient glucose control, has not previously been utilized in preoperative assessment for spine surgery. PURPOSE To determine the association between preoperative glycemic control and spinal surgery outcomes, we hypothesized that patients with higher HbA1c levels will have higher perioperative complication rates. STUDY DESIGN/SETTING Single institution prospective study. PATIENT SAMPLE Neurosurgical patients who underwent elective spinal surgery at the University of Missouri Health Care 2016-2018. OUTCOME MEASURES Perioperative complications assessed included intraoperative CSF leak, readmission, wound infection, nonunion, failure of hardware, cerebral spinal fluid leak, UTI, DVT, PE, stroke, MI, death and extended length of hospitalization. METHODS Patients scheduled for elective spine surgery had HbA1c levels obtained prior to surgery with preoperative laboratory testing. HBA1c levels were categorized using guidelines of the American Diabetes Association as normal (HbA1c 6.5%). Those with HbA1c > 8% were classified as poorly controlled DM. Perioperative complications (listed above) were analyzed for associations with DM using logistic regression models. Odds ratios (ORs) and 95% confidence intervals of the ORs were determined. RESULTS Of the 617 patients who underwent spine surgery, 441 (238 male, mean age 56.43 + 13.28, mean BMI 30.80 + 6.65) had preoperative HbA1c levels and postoperative follow-up. HbA1c was 8.0 in 23 (5.22%). Bivariate logistic modeling showed that patients with poorly controlled DM demonstrated a higher risk of complications (OR = 2.92, 95% CI = 1.17, 7.09) than the diabetes patients (OR = 2.13, 95% CI = 1.15, 3.91). Malignancy (OR= 2.62, 95% CI =1.06, 6.37), and hypertension (OR 1.86, 95% CI=1.23, 3.88) were also significant risk factors for complications. However, smoking (OR = 0.83, 95% CI = 0.53, 1.27) was not significant. Poorly controlled DM remained associated with complications in multivariable logistic regression modeling (OR=2.72, 95% CI =1.06, 6.82). CONCLUSIONS Poorly control DM defined by preoperative HbA1c was significantly associated with postoperative complications. Smoking, however, was not significant. Preoperative HbA1c can be used to assess risk of complications after spine surgery. FDA DEVICE/DRUG STATUS This abstract does not discuss or include any applicable devices or drugs.

Clinical and Structural Outcomes After Rotator Cuff Repair in Patients With Diabetes: A Meta-analysis.

Background:The impact of diabetes on clinical and structural outcomes after rotator cuff repair remains controversial.Purpose/Hypothesis:The purpose of this study was to compare clinical outcomes and retear rates after rotator cuff repair in patients with and without diabetes. Our hypotheses were that adequate control of diabetes would decrease the retear rate after rotator cuff repair and that patients with diabetes would have worse clinical outcomes.Study Design:Systematic review; Level of evidence, 3.Methods:The PubMed, Embase, and Cochrane Library databases were searched for studies comparing outcomes in patients with and without diabetes after full-thickness rotator cuff repair. Clinical outcome analysis included the Constant score, the American Shoulder and Elbow Surgeons (ASES) score, and the University of California–Los Angeles shoulder rating scale; we compared preoperative, postoperative, and change in functional scores from baseline to final follow-up among the included studies. The pooled relative risk was calculated using a random-effects model for retear rates. Clinical outcomes were also pooled using a random-effects model.Results:Overall, 10 studies were included. Compared with patients without diabetes, patients with diabetes had a worse preoperative ASES score (P = .009) as well as worse postoperative Constant score (final follow-up range, 9-103 months; P = .0003). However, there was no significant difference in the absolute mean change in clinical outcomes between patients with and without diabetes. Diabetes was associated with a higher retear rate (19.3% in patients without diabetes vs 28.2% in patients with diabetes; P < .0001). The retear rate according to the severity of sustained hyperglycemia in the subgroup analysis was 14.6% in patients without diabetes, versus 22.7% in patients with well-controlled diabetes (<7.0% of preoperative serum HbA1c level; P = .12) and 40.0% in patients with uncontrolled diabetes (HbA1c level ≥7.0%; P < .00001).Conclusion:This meta-analysis suggests that diabetes mellitus is associated with an increased risk of retears after rotator cuff repair, and improved blood glucose control may reduce the risk of retears in patients with diabetes mellitus. Although effective glycemic control was associated with a decreased risk of retears in patients with diabetes, we could not prove causation because of potential bias and confounding in the included studies.