Preoperative Optimization Research Articles

The Association Between Mental Health, Substance Use Disorder, and Outcomes After Total Joint Arthroplasty

BackgroundPrior studies suggest that distressed patients or those who have poor mental health have inferior postoperative outcomes when compared to nondistressed patients. However, these studies typically do not account for substance use or other comorbidities often found in this population, which can independently contribute to postoperative complications. This study sought to control for these factors and assess if a diagnosis of a mental health condition is directly associated with worse outcomes after total joint arthroplasty. MethodsA retrospective chart review was performed for 3,182 patients who underwent a total hip arthroplasty and 4,430 patients who underwent a total knee arthroplasty. Diagnosis of the mental health disorders included depression, anxiety disorder, adjustment disorder, bipolar disorder, trauma, stressor-related disorder, and schizophrenia or schizoaffective disorder. Multivariable analyses were performed to control for alcohol use, drug use, tobacco use, body mass index, and a comorbidity index. ResultsWhen controlling for body mass index and Charlson comorbidity index, no statistically significant associations were found between a diagnosis of any mental health condition or a specific diagnosis of depression or anxiety, and 90-day readmission, reoperation, or 1 year mortality for patients undergoing total knee arthroplasty or total hip arthroplasty. ConclusionsWhen accounting for confounding factors, there does not appear to be a direct association between diagnosis of any of the psychiatric conditions we studied and outcomes after primary total joint arthroplasty. While prior studies suggest addressing the mental health condition may improve outcomes, this study suggests that preoperative medical optimization and potentially addressing substance use may be more effective strategies.

Sex-Specific Postoperative Outcomes of Primary Total Hip Replacements: The Performance of Total Hip Replacement Procedures Leads to Worse Outcomes in Men.

The demand for primary total hip arthroplasty (THA) is expected to increase significantly in the coming years, and women are expected to account for the greatest proportion of this increased demand. The purpose of this study was to determine, using a national database, the effect of sex on 90-day outcomes in primary THA patients while matching for confounding variables. Specifically, we evaluated: (1) in-hospital lengths of stay; (2) 90-day readmission rates; (3) 90-day medical complications; (4) and total global 90-day episode-of-care (EOC) costs in men and women. Using the 100% Medicare Standard Analytical Files (SAF), a query from January 1, 2005 to March 31, 2014 from a nationwide database was performed to analyze patients who received a primary THA. The series was divided into two cohorts: men (n=436,737) and women (n=436,737). Male and female patients were matched according to age and Elixhauser-Comorbidity Index (ECI). Uni- and multi-variable regression analyses were performed to analyze the effects of sex on in-hospital lengths of stay, 90-day readmission rates, 90-day medical complications, and total global 90-day EOC costs. Men had greater overall 90-day medical complications compared to women following primary THA (1.28 vs. 1.19%, p<0.001). Men were found to have higher rates of acute kidney failure (0.12 vs 0.05%, p<0.0001), acute pancreatitis (0.02 vs. 0.01%, p<0.0001), cerebrovascular accidents (0.03 vs. 0.01%, p<0.0001), deep vein thromboses (0.06 vs. 0.04%, p<0.0001), and myocardial infarctions (0.02 vs. 0.01%, p<0.0001). Women were found to have higher rates of acute post-hemorrhagic anemiae (0.31 vs. 0.30%, p<0.001) and urinary tract infections (UTI; 0.40 vs. 0.28%, p<0.0001) compared to men. Men had shorter in-hospital lengths of stay (LOS) (3.42 vs. 3.54 days, p<0.001) but greater 90-day readmission rates (7.67 vs. 6.39% p<0.0001). Both cohorts had similar total global 90-day EOC costs ($14,869.85 ± $12,333.50 vs. $14,957.34 ± $10,915.61, p=0.36). Men undergoing THA have a greater number of overall 90-day medical complications and readmission rates while women have higher incidence of UTI, post-hemorrhagic anemia, and longer LOS. Understanding sex-based differences in complication rates and outcomes can help surgeons with preoperative counseling and targeted preoperative optimization.

Use of virtual reality for preoperative optimization of the management of visceral artery aneurysms

Use of virtual reality for preoperative optimization of the management of visceral artery aneurysms

Coronary artery bypass grafting in left ventricular dysfunction: when and how.

The surgical management of patients undergoing coronary artery bypass grafting (CABG) with low ejection fraction presents unique challenges that require meticulous attention to details and good surgical technique and judgement. This review details the latest evidence and best practices in the care of such patients. CABG in patients with low ejection fraction carries a significant risk of perioperative mortality and morbidity related to the development of postcardiotomy shock. Preoperative optimization with pharmacological or mechanical support is required, especially in patients with cardiogenic shock. Rapid and complete revascularization is what CABG surgeons aim to achieve. Multiple arterial revascularization should be reserved to selected patients. Off-pump CABG, on-pump breathing heart CABG, and new cardioplegic solutions remain of uncertain benefit compared with traditional CABG. Tremendous advancements in CABG allowed surgeons to offer revascularization to patients with severe left ventricular dysfunction and multivessel disease with acceptable risk. Despite that, there is a lack of comprehensive and robust studies particularly on long-term outcomes. Individualized patient assessment and a heart team approach should be used to determine the optimal surgical strategy for each patient.

Perioperative blood management programme in Jehovah’s witnesses undergoing total knee arthroplasty: clinical results and cost-benefit analysis

Introduction Total knee arthroplasties have the purpose to improve quality of life from joint-related pain. On the other hand, it may represent a risky surgical procedure in people who refuse blood products due to their religious beliefs, such as Jehovah’s Witnesses (JW). Preoperative optimization protocols of these patients allow performing arthroplasties in a safer manner avoiding allogeneic blood transfusion. Methods In our retrospective study, 2 groups of patients were evaluated. Group 1, included JW patients who underwent a preoperative Hb optimisation programme; group 2 included non-JW patients authorizing transfusion in case of necessity. Results Differences in Hb levels were: before surgery (JW 13,63±1,26 vs. non-JW 12,83±1,21, p-value=0,22), after surgery (day 1 Hb: JW 12,26±1,47 vs. non-JW 10,88±1,87, p-value=0,1; day 3 Hb: JW 10±2,97 vs. non-JW 9,23±1,07 p-value=0,64). In the JW group the mean Hb concentration decreased from 13,63±1,26 g/dL preoperatively to 12,26±1,47 g/dL (day 1) while in non-JW group fell from 12,83± g/dL to 10,88± g/dL. There was no statistically-difference between the 2 groups. Moreover, cost-effectiveness strategies were evaluated in both groups. Conclusion Our findings support that PBM programs represent a safe and good strategy in knee prosthetic surgery, decreasing costs, risks and transfusion overuse.

Essential updates 2021/2022: Update in surgical strategy for perihilar cholangiocarcinoma.

Resection is the only potential curative treatment for perihilar cholangiocarcinoma (PHC); however, complete resection is often technically challenging due to the anatomical location. Various innovative approaches and procedures were invented to circumvent this limitation but the rates of postoperative morbidity (20%-78%) and mortality (2%-15%) are still high. In patients diagnosed with resectable PHC, deliberate and coordinated preoperative workup and optimization of the patient and future liver remnant are crucial. Biliary drainage is recommended to relieve obstructive jaundice and optimize the clinical condition before liver resection. Biliary drainage for PHC can be performed either by endoscopic biliary drainage or percutaneous transhepatic biliary drainage. To date there is no consensus about which method is preferred. The volumetric assessment of the future remnant liver volume and optimization mainly using portal vein embolization is the gold standard in the management of the risk to develop post hepatectomy liver failure. The improvement of systemic chemotherapy has contributed to prolong the survival not only in patients with unresectable PHC but also in patients undergoing curative surgery. In this article, we review the literature and discuss the current surgical treatment of PHC.

Gender, racial, and socioeconomic disparity of preoperative optimization goals in ventral hernia repair.

Preoperative optimization cut-offs are frequently utilized to determine eligibility for elective ventral hernia repair. Our objective was to assess the relationship between gender, race, and socioeconomic status and preoperative optimization goals. We queried our institutional database for adults with ventral hernia diagnoses between 2016 and 2021. Demographics, comorbidities, laboratory, and operative data were collected and analyzed. The following cut-offs were used to determine eligibility for elective repair: body mass index (BMI) < 40kg/m2, no active smoking, and glycated hemoglobin (HbA1c) < 8%. Socioeconomic status was assessed using the Distressed Communities Index. A total of 5638 patients were included [Whites = 4321 (77%), Blacks = 794 (14%), Hispanics = 318 (6%), and other/unknown 205 (4%)]. Median age was 61years and 50% were male. Most common hernia types were umbilical (36%) and incisional (20%). 10% had BMI > 40kg/m2, 9% were active smokers and 4% had HbA1c > 8%. 21% of all patients did not meet the preoperative optimization cut-offs at time of diagnosis and those were less likely to undergo hernia repair during the study timeframe compared to those who did (OR 0.50; 95% CI [0.42-0.60]). There was a higher proportion of females (21%) and Blacks (22%) with BMI > 40kg/m2 compared to males (11%) and other races (11-15%), p = 0.002. As the level of socioeconomic distress increased, there was a corresponding increase in the proportion of patients who did not meet preoperative optimization cut-offs from 16% in prosperous communities to 25% in distressed communities (p < 0.0001). Nearly 1 of 5 patients with ventral hernias is affected by commonly used arbitrary preoperative optimization cut-offs. These cut-offs disproportionately impact females, Black patients and those with higher socioeconomic distress. These disparities need to be considered when planning preoperative optimization protocols and resource allocation to ensure equitable access to elective ventral hernia repair.

Open prostatectomy for benign prostatic hyperplasia: A critical analysis of patient presentation and surgical outcomes in a contemporary series.

Open prostatectomy (OP) is still a valid treatment option for benign prostatic hyperplasia (BPH), but it needs to be constantly reevaluated in the context of minimally invasive treatments (MITs). Our purpose is to present contemporary data on patient presentation and surgical outcomes of OP with which other OP series and MITs can be compared. A retrospective study of all OP was carried out in our institution from January 2011 to December 2020. All patients had a thorough preoperative workup and optimization of comorbidities before surgery. Data were collected in a predesigned pro forma and analyzed. The mean age of the 148 patients studied was 66.2 (±7.9) yrs. The mean duration of symptoms before surgery was 32.2 (±33.7) mos. The mean preoperative prostate volume was 118.0 (±67.1) cm3. There was a 54.4% comorbidity rate with diabetes mellitus (DM) topping the list (16.0%). An incidental prostate cancer rate of 6.1% was found. The overall complication rate was 45.3%. Perioperative hemorrhage requiring blood transfusion (BT) was the most common complication (26.1%). There was no significant difference in age, duration of surgery, and prostrate volume between subjects with and without BT (P > 0.05). Wound infection was significantly associated with diabetes (P = 0.043, OR = 3.507, 95% CI = 1.042-11.805). The reoperation rate was 1.4%, and mortality rate was 0.7%. The International Prostate Symptom Score (IPSS), quality-of-life (QOL) score, and post-void residual urine (PVR) volume were significantly improved (P < 0.001). OP was found to be a safe and effective procedure for the relief of bladder outlet obstruction (BOO) secondary to BPH. However, it was associated with high morbidity and low reoperation rate.

Enhanced recovery protocols for ambulatory surgery.

In the United States, ambulatory surgeries account for up to 87% of all surgical procedures. (1) It was estimated that 19.2 million ambulatory surgeries were performed in 2018 (https://www.hcup-us.ahrq.gov/reports/statbriefs/sb287-Ambulatory-Surgery-Overview-2019.pdf). Cataract procedures and musculoskeletal surgeries are the most common surgical interventions performed in ambulatory centers. However, more complex surgical interventions, such as sleeve gastrectomies, oncological, and spine surgeries, and even arthroplasties are routinely performed as day cases or in a model of an ambulatory extended recovery. (2-5) The ambulatory surgery centers industry has grown since 2017 by 1.1% per year and reached a market size of $31.2 billion. According to the Ambulatory Surgery Center Association, there is a potential to save $57.6 billion in Medicare costs over the next decade (https://www.ibisworld.com/industry-statistics/market-size/ambulatory-surgery-centers-united-states/). These data suggest an expected rise in the volume of ambulatory (same day) or extended ambulatory (23h) surgeries in coming years. Similar increases are also observed in other countries. For example, 75% of elective surgeries are performed as same-day surgery in the United Kingdom. (6) To reduce costs and improve the quality of care after those more complex procedures, ambulatory surgery centers have started implementing patient-centered, high-quality, value-based practices. To achieve those goals, Enhanced Recovery After Surgery (ERAS) protocols have been implemented to reduce the length of stay, decrease costs, increase patients' satisfaction, and transform clinical practices. The ERAS fundamentals for ambulatory surgery are based on five pillars, including (1) preoperative patient counseling, education, and optimization; (2) multimodal and opioid-sparing analgesia; (3) nausea and vomiting, wound infection, and venous thromboembolism prophylaxis; (4) maintenance of euvolemia; and (5) encouragement of early mobility. Those pillars rely on interdisciplinary teamwork led by anesthesiologists, surgery-specific workgroups, and safety culture. (2) Research shows that a team of ambulatory anesthesiologists is crucial in improving postoperative nausea and vomiting (PONV) and pain control. (7) This review will summarize the current evidence on the elements and clinical importance of implementing ERAS protocol for ambulatory surgery.

A Comparative Analysis of Perioperative Complications in Octogenarians and Patients under 60 Years of Age after Primary Cemented Total Knee Arthroplasty.

Introduction: Knee arthroplasty is exposed to demographic changes as patients age. An analysis of risk factors for surgical treatment decisions in patients over 80 years old is crucial. This study compared perioperative complications between groups of patients undergoing primary knee arthroplasty, under 60 years old and over 80 years old.Materials and Methods: For this retrospective study, data from 400 patients with primary cemented bi- and unicondylar total knee endoprosthesis during inpatient stay from 2017 to 2018 were analyzed. Patients aged 61-79 years (257) were excluded. An analysis of the remaining 143 patients was performed. The incidence of surgery-related and systemic complications (eg, urinary tract infections, electrolyte imbalances, and cases of pneumonia), the blood supply and C-reactive protein (CRP) as well as hemoglobin progression were compared across both age groups. Furthermore, a correlation between prevalent diseases and systemic complications were investigated. Statistical analysis was performed using IBM SPSS (Armonk, US).Results: Data analyses showed a significant difference in the occurrence of systemic complications and blood transfusion between the age groups (P = 0.001, phi = 0.44; phi= 0.55, P = 0.001). Surgical complications did not differ significantly between the age groups. Age-typical pre-existing conditions, especially arterial hypertension (P = 0.003), showed a significant association with the occurrence of systemic complications. In addition, high postoperative CRP values in elderly patients revealed an association to systemic complications (P = 0.008).Discussion and Conclusion: The study shows that primary cemented knee arthroplasty is a safe procedure without an increased incidence of surgical complications, even in elderly patients. The increased incidence of internal complications in octogenarians, in turn, should receive more attention in the perioperative course. The interdisciplinary preoperative optimization of pre-existing conditions and drug therapy, as well as close interdisciplinary assessments of elderly patients, should be ensured.

Current approaches to spinal cord protection during open thoracoabdominal aortic aneurysm repair.

Spinal cord deficit (SCD) is a feared complication after thoracoabdominal aortic aneurysm repair. Vigilant management throughout the perioperative period is necessary to reduce the risk of SCD. Measures for preventing SCD during the intraoperative period include preoperative optimization and recognizing patients at a higher risk of SCD. In this manuscript, we discuss intraoperative adjuncts including utilization of cerebrospinal fluid drainage, left heart bypass, mild hypothermia, selective reimplantation of intercostal and lumbar arteries, and renal and visceral vessel perfusion. From the operative to the postoperative period, careful attention to avoiding hypotension and anemia is important. If SCD is recognized early, therapeutic intervention may be implemented to mitigate injury.

Optimizing care of patients undergoing cardiac surgery using a digital platform and a multidisciplinary team approach

ObjectiveRestrictions to care access during the pandemic along with the increasing complexity of patients awaiting cardiac surgery provides unique challenges for care delivery. The University of Ottawa Heart Institute has developed a novel multidisciplinary digital platform, the Prehab Automated Follow-Up (AFU) Program, which delivers patient/caregiver teaching regarding risk factor mitigation, tracks patient symptoms, and screens for optimization using best practice guidelines. This study was conducted to quantify patient outcomes following initiation of the AFU Program. MethodsPatients awaiting elective cardiac surgery are enrolled and screened via automated telephone conversation, according to best practice guidelines, and a Short Form-12 preoperative assessment. Following this screen, patients are referred for an in-person assessment by an appropriate multidisciplinary team member; namely, a diabetes specialist, physiotherapist, dietitian, smoking cessation counselor, social worker, vocational counselor, and/or psychologist. ResultsSince initiation in February 2021, the AFU Program has enrolled more than 1237 patients with 508 multidisciplinary team referrals prompted by the AFU screening platform. Before program initiation, there were no multidisciplinary team referrals for preoperative optimization. Compared with patients treated between February 2020 and February 2021, there was a 2.5% decrease in hospital readmission rate within 30 days of surgery, a 0.6-day shorter hospital stay, and a 2.5% decrease in surgical site infection. ConclusionsOur cardiac surgery AFU Program reduced adverse health outcomes for patients by identifying and optimizing risk factors that increased quality of patient care. The AFU Program provides patient/caregiver engagement through educational support and multidisciplinary team counseling.

Comparing Liver Venous Deprivation and Portal Vein Embolization for Perihilar Cholangiocarcinoma: Is It Time to Shift the Focus to Hepatic Functional Reserve Rather than Hypertrophy?

Purpose: Among liver hypertrophy technics, liver venous deprivation (LVD) has been recently introduced as an effective procedure to combine simultaneous portal inflow and hepatic outflow abrogation, raising growing clinical interest. The aim of this study is to investigate the role of LVD for preoperative optimization of future liver remnant (FLR) in perihilar cholangiocarcinoma (PHC), especially when compared with portal vein embolization (PVE). Methods: Between January 2013 and July 2022, all patients diagnosed with PHC and scheduled for preoperative optimization of FTR, through radiological hypertrophy techniques, prior to liver resection, were included. FTR volumetric assessment was evaluated at two distinct timepoints to track the progression of both early (T1, 10 days post-procedural) and late (T2, 21 days post-procedural) efficacy indicators. Post-procedural outcomes, including functional and volumetric analyses, were compared between the LVD and the PVE cohorts. Results: A total of 12 patients underwent LVD while 19 underwent PVE. No significant differences in either post-procedural or post-operative complications were found. Post-procedural FLR function, calculated with (99m) Tc-Mebrofenin hepatobiliary scintigraphy, and kinetic growth rate, at both timepoints, were greater in the LVD cohort (3.12 ± 0.55%/min/m2 vs. 2.46 ± 0.64%/min/m2, p = 0.041; 27.32 ± 16.86%/week (T1) vs. 15.71 ± 9.82%/week (T1) p < 0.001; 17.19 ± 9.88%/week (T2) vs. 9.89 ± 14.62%/week (T2) p = 0.034) when compared with the PVE cohort. Post-procedural FTR volumes were similar for both hypertrophy techniques. Conclusions: LVD is an effective procedure to effectively optimize FLR before liver resection for PHC. The faster growth rate combined with the improved FLR function, when compared to PVE alone, could maximize surgical outcomes by lowering post-hepatectomy liver failure rates.

NCPD Tests: Orthopaedic Nurse Navigators and Total Joint Arthroplasty Preoperative Optimization: Improving Patient Access to Musculoskeletal Care.

NCPD Tests: Orthopaedic Nurse Navigators and Total Joint Arthroplasty Preoperative Optimization: Improving Patient Access to Musculoskeletal Care.

Perioperative Care Innovations: Optimizing Recovery and Reducing Complications in General Surgery

Significant progress has been made in perioperative care for general surgery with the goal of minimising postoperative complications and improving patient outcomes. This thorough analysis examines developments in the preoperative, intraoperative, and postoperative domains of the perioperative continuum. This article explores the most recent innovations influencing the profession, with a focus on patient-centered tactics, technology improvements, and interdisciplinary approaches.&#x0D; Within the context of preoperative optimisation, therapies aimed at correcting dietary deficiencies, individualised exercise programmes, and psychological preparedness are critical to improving surgical patient readiness. Improved surgical methods, such as robotics and minimally invasive surgery, revolutionise surgical accuracy while reducing trauma and facilitating a quicker recovery.&#x0D; Innovations in postoperative care, such improved recovery procedures and remote monitoring devices, speed up recovery and lower complications. Pain treatment and infection control advances in pharmacology have a major positive impact on patient comfort and lower morbidity.&#x0D; This study emphasises the value of customised treatment plans, collaborative decision-making, and specialised communication while embracing patient-centered methods. It highlights how important it is for patients to be involved in their treatment, how to promote their own autonomy, and how to improve compliance with postoperative instructions.&#x0D; This study seeks to highlight the combined influence of these breakthroughs on changing general surgery perioperative care paradigms through an examination of these advances. The perioperative setting is driven by the combination of innovative tactics, cooperation across varied healthcare specialties, and technology breakthroughs with the ultimate goal of optimising recovery and minimising problems.

Value-Based Care and Anesthesiology in the USA.

Value-based care, prioritizing patient outcomes over service volume, is steering a transformative course in anesthesiology in the United States. With the rise of this patient-centric approach, anesthesiologists are adopting dynamic roles to meet the demands of medical institutions, insurers, and patients for high-quality, cost-effective care. The urgency for this transition is accentuated by persistent challenges in reducing postoperative mortality rates and surgical complications, further spotlighted by the coronvirus disease 2019 (COVID-19) pandemic. Anesthesiologists engage in preoperative optimization, personalized care delivery, and evidence-based practices, bolstering their influence in the perioperative environment. Their collaboration with perioperative stakeholders propels the shift toward a value-driven healthcare landscape. This review analyzes the implementation of value-based care inAmerican anesthesiology, assesses the significance of technology in enhancing its delivery, and outlines potential strategies for improving its application.

313 Preoperative CT Imaging: A Tool to Predict Incisional Hernia Outcomes Following Abdominal Wall Reconstruction

Abstract Aim Abdominal wall reconstruction (AWR) is a surgical technique used to manage recurrent incisional hernias, which cause significant morbidity and are difficult to treat. In this study, we sought to determine whether subcutaneous abdominal fat thickness (AFT) measured at the xiphoid process, umbilicus, and pubic tubercle using preoperative CT scans could predict postoperative outcomes in patients undergoing AWR. Method A retrospective cohort study was conducted on all patients who underwent AWR at our institution between 2009 and 2021 with a minimum follow-up of 12 months. Using preoperative CT scans, AFT was measured at the xiphoid process, umbilicus, and pubic tubercle, as well as the hernia dimensions. Demographic, operative, and surgical outcome data were also collected and analysed using statistical tests. Results The results showed that 9 out of 101 patients (8.9%) experienced hernia recurrence. Smoking was significantly associated with an increased risk of hernia recurrence (p&amp;lt;0.001) and had a predictive odds ratio (OR) of 18.27 (p = 0.041). Increased AFT at the xiphoid (p = 0.005), umbilicus (p&amp;lt;0.001), and pubic tubercle (p&amp;lt;0.001) were also associated with hernia recurrence and additionally with risk of infection. However, only AFT at the pubic tubercle reached significance in the multivariate logistic regression model predicting recurrence (OR = 1.10; p = 0.030) and infection (OR = 1.04; p = 0.021). Conclusions In conclusion, smoking and increased subcutaneous abdominal fat thickness at the pubic tubercle are significant risk factors for recurrence and infection in patients undergoing abdominal wall reconstruction, and preoperative optimisation should focus on reducing these factors.

Staged abdominal wall reconstruction in the setting of complex gastrointestinal reconstruction.

Literature on one- versus two-staged abdominal wall reconstruction (AWR) with complex gastrointestinal reconstruction (GIR) is limited to single-arm case series with a focus on patients who complete all planned stages. Herein, we describe our experience with both one- and two-staged approaches to AWR/GIR, with attention to those who did not complete both intended stages. A retrospective review of prospectively collected data was conducted to identify patients who underwent a one- or two-stage approach to GIR/AWR from 2013 to 2020. The one-stage approach included GIR and definitive sublay mesh herniorrhaphy. The two-stage approach included Stage 1 (S1)-GIR and non-definitive herniorrhaphy and Stage 2 (S2)-definitive sublay mesh herniorrhaphy. Fifty-four patients underwent GIR/AWR: 20 (37.0%) underwent a planned 1-stage operation while 34 (63.0%) underwent S1 of a planned 2-stage approach. Patients assigned to the 2-stage approach were more likely to be smokers, have a history of mesh infection, have an enterocutaneous fistula, and a contaminated wound class (p<0.05). Of the 34 patients who underwent S1, 12 (35.3%) completed S2 during the mean follow-up period of 44 months while 22 (64.7%) did not complete S2. Of these, 10 (45.5%) developed hernia recurrence but did not undergo S2 secondary to elective nonoperative management (40%), pending preoperative optimization (30%), additional complex GIR (10%), hernia-related incarceration requiring emergent surgery (10%), or unrelated death (10%). No differences in outcome including SSI, SSO, readmission, and recurrence were noted between the 12 patients who completed the two-stage approach and the 20 patients who completed a one-stage approach, despite increased risk factors for complications in the 2-stage group (p>0.05). Planned two-stage operations for GIR/AWR may distribute operative complexity and post-operative morbidity into separate surgical interventions. However, many patients may never undergo the intended definitive S2 herniorrhaphy. Future evaluation of 1- versus 2-stage GIR/AWR is needed to clarify indications for each approach. This work must also consider the frequent deviations from intended clinical course demonstrated in this study.

181 Lessons Learned from Complex Abdominal Wall Reconstruction for the Management of Giant Paraoesophageal Hernia - a Case Analysis

Abstract Aim In this case report, we present a new method in the management of a giant hiatus hernia: the use of crural relaxing incisions. This new method in combination with previously known strategies including botox and preoperative optimisation for surgery with weight loss and prehabiliation can result in a more effective surgical hiatus hernia repair and subsequently lead to a reduced risk of hiatus hernia recurrence. Case Presentation 71yo man admitted to hospital with a one-week history of generalised abdominal pain, nausea, vomiting and chest pain. He had a background of a known large hiatus hernia for the last 10 years. An abdominal CT showed a large type IV hiatus hernia containing the stomach, transverse colon, pancreatic body, and pancreatic neck. CT guided botulinum toxin A injections were given by interventional radiology during which the muscle bellies of the transversus abdominus, internal and external obliques were targeted. The patient was placed on a meal replacement (Optifast) diet. A laparoscopic thoraco-abdominal hiatus repair was performed finding a giant hiatus hernia containing the entire stomach, first part of the duodenum, left lobe of liver, transverse colon, small bowel and distal pancreas. Due to the size of the hiatus hernia and the potential tension likely to result from a repair, both right and left crural relaxing incisions were made to facilitate closure. Crural closure was reinforced with a Bio A mesh secured in a C configuration covering the right crural relaxing incision. The patient recovered well postoperatively. Follow up imaging did now show recurrence.

Determining sex-specific preoperative haemoglobin levels associated with intraoperative red blood cell transfusion in cardiac surgery: a retrospective cohort study

BackgroundAnaemic cardiac surgery patients are at greater risk of intraoperative red blood cell transfusion. This study questions the application of the World Health Organization population-based anaemia thresholds (haemoglobin <120 g L−1 in non-pregnant females and <130 g L−1 in males) as appropriate preoperative optimisation targets for cardiac surgery. MethodsA retrospective cohort study was conducted on adults ≥18 yr old undergoing cardiopulmonary bypass surgery. Logistic regression was applied to define sex-specific preoperative haemoglobin concentrations with reduced probability of intraoperative red blood cell transfusion for cardiac surgery patients. ResultsData on 4384 male and 1676 female patients were analysed. Binarily stratified multivariable logistic regression odds of receiving intraoperative red blood cell transfusion increased in cardiac surgery patients >45 yr old (odds ratio [OR] 1.84; 95% confidence interval [CI] 1.33–2.55), surgery urgency <30 days (OR 2.03; 95% CI 1.66–2.48), combined coronary artery bypass grafting and valve surgery, or other surgery types (OR 2.24; 95% CI 1.87–2.67), and female sex (OR 1.92; 95% CI 1.62–2.28). The odds decreased by 8.4% with each 1 g L−1 increase in preoperative haemoglobin (OR 0.92; 95% CI 0.91–0.92). Logistic regression predicted females required a preoperative haemoglobin concentration of 133 g L−1 and males 127 g L−1 to have a 15% probability of intraoperative transfusion. ConclusionsThe World Health Organization female anaemia threshold of haemoglobin <120 g L−1 disproportionately disadvantages female cardiac surgery patients. A preoperative haemoglobin concentration ≥130 g L−1 in adult cardiac surgery patients would minimise their overall probability of intraoperative red blood cell transfusion to <15%.