Determining the impact of sarcopenia on postoperative complications after ventral hernia repair

Role of sarcopenia in complex abdominal wall surgery: does it increase postoperative complications and mortality?

BACKGROUND

Sarcopenia is defined as the loss of skeletal muscle mass and is associated with an increased risk or morbidity and mortality in complex surgical patient populations. Its role in complex abdominal wall surgery (AWS) is yet to be determined. The aim of this study is to establish if sarcopenia has an impact on postoperative complications, mortality and hernia recurrence.

METHODS

Retrospective study of patients undergoing elective surgery for complex incisional hernias > 10 cm (W3 of European Hernia Society classification) between 2014-2023. Sarcopenia was stablished as the skeletal muscle index (SMI), measured at L3 transversal section of a preoperative CT-scan. Previously defined literature-based SMI cutoff values were used: men ≤ 52.4 cm2/m2, women ≤ 38.5 cm2/m2.

RESULTS

135 patients undergoing complex AWS were included. Of them, 38 were sarcopenic (28.1%). The median follow-up time was 13 months (IQR 12-25). In total, 11 patients died (8.1%). We found that sarcopenia was associated with a higher risk of mortality [HR 7.494 (95% CI 1.985-28.289); p 0.003]. There were no statistically significant differences in postoperative complications or hernia recurrence between both groups.

CONCLUSION

Although sarcopenia does not seem to have an influence on hernia recurrence or the development of postoperative complications, whether local or systemic, in our study sarcopenia is associated with a higher risk of mortality after complex abdominal wall surgery. Nonetheless, with the results obtained in our study, we think that prehabilitation programs before complex AWS is advisable.

Concomitant Panniculectomy in Abdominal Wall Reconstruction: A Narrative Review Focusing on Obese Patients

The global prevalence of obesity continues to rise, contributing to an increased frequency of abdominal wall reconstruction procedures, particularly ventral hernia repairs, in individuals with elevated body mass indexes. Undertaking these operations in obese patients poses inherent challenges. This review focuses on the current literature in this area, with special attention to the impact of concomitant panniculectomy. Obese individuals undergoing abdominal wall reconstruction face elevated rates of wound healing complications and hernia recurrence. The inclusion of concurrent panniculectomy heightens the risk of surgical site occurrences but does not significantly influence hernia recurrence rates. While this combined approach can be executed in obese patients, caution is warranted, due to the higher risk of complications. Physicians should carefully balance and communicate the potential risks, especially regarding the increased likelihood of wound healing complications. Acknowledging these factors is crucial in shared decision making and ensuring optimal patient outcomes in the context of abdominal wall reconstruction and related procedures in the obese population.

Impact of sarcopenia on outcomes in surgical patients: a systematic review and meta-analysis

BACKGROUND

Surgeons have historically used age as a preoperative predictor of postoperative outcomes. Sarcopenia, the loss of skeletal muscle mass due to disease or biological age, has been proposed as a more accurate risk predictor. The prognostic value of sarcopenia assessment in surgical patients remains poorly understood. Therefore, the authors aimed to synthesize the available literature and investigate the impact of sarcopenia on perioperative and postoperative outcomes across all surgical specialties.

METHODS

The authors systematically assessed the prognostic value of sarcopenia on postoperative outcomes by conducting a systematic review and meta-analysis according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, searching the PubMed/MEDLINE and EMBASE databases from inception to 1st October 2022. Their primary outcomes were complication occurrence, mortality, length of operation and hospital stay, discharge to home, and postdischarge survival rate at 1, 3, and 5 years. Subgroup analysis was performed by stratifying complications according to the Clavien-Dindo classification system. Sensitivity analysis was performed by focusing on studies with an oncological, cardiovascular, emergency, or transplant surgery population and on those of higher quality or prospective study design.

RESULTS

A total of 294 studies comprising 97 643 patients, of which 33 070 had sarcopenia, were included in our analysis. Sarcopenia was associated with significantly poorer postoperative outcomes, including greater mortality, complication occurrence, length of hospital stay, and lower rates of discharge to home (all P <0.00001). A significantly lower survival rate in patients with sarcopenia was noted at 1, 3, and 5 years (all P <0.00001) after surgery. Subgroup analysis confirmed higher rates of complications and mortality in oncological (both P <0.00001), cardiovascular (both P <0.00001), and emergency ( P =0.03 and P =0.04, respectively) patients with sarcopenia. In the transplant surgery cohort, mortality was significantly higher in patients with sarcopenia ( P <0.00001). Among all patients undergoing surgery for inflammatory bowel disease, the frequency of complications was significantly increased among sarcopenic patients ( P =0.007). Sensitivity analysis based on higher quality studies and prospective studies showed that sarcopenia remained a significant predictor of mortality and complication occurrence (all P <0.00001).

CONCLUSION

Sarcopenia is a significant predictor of poorer outcomes in surgical patients. Preoperative assessment of sarcopenia can help surgeons identify patients at risk, critically balance eligibility, and refine perioperative management. Large-scale studies are required to further validate the importance of sarcopenia as a prognostic indicator of perioperative risk, especially in surgical subspecialties.

Sarcopenia and body fat change as risk factors for radiologic incisional hernia following robotic nephrectomy

OBJECTIVE

To assess the effect of body muscle and fat metrics on the development of radiologic incisional hernia (IH) following robotic nephrectomy.

MATERIALS AND METHODS

We retrospectively reviewed the records of patients who underwent robotic nephrectomy for kidney tumors between 2011 and 2017. All pre- and postoperative CTs were re-reviewed by experienced radiologists for detection of radiologic IH and calculation of the following metrics using Synapse 3D software: cross-sectional psoas muscle mass at the level of L3 and L4 as well as subcutaneous and visceral fat areas. Sarcopenia was defined as psoas muscle index below the lowest quartile. Cox proportional hazard model was constructed to examine the association between muscle and fat metrics and the risk of developing radiologic IH.

RESULTS

A total of 236 patients with a median (IQR) age of 64 (54-70) years were included in this study. In a median (IQR) follow-up of 23 (14-38) months, 62 (26%) patients developed radiologic IH. On Cox proportional hazard model, we were unable to detect an association between sarcopenia and risk of IH development. In terms of subcutaneous fat change from pre-op, both lower and higher values were associated with IH development (HR (95% CI) 2.1 (1.2-3.4), p = 0.01 and 2.4 (1.4-4.1), p < 0.01 for < Q1 and ≥ Q3, respectively). Similar trend was found for visceral fat area changes from pre-op with a HR of 2.8 for < Q1 and 1.8 for ≥ Q3.

CONCLUSION

Both excessive body fat gain and loss are associated with development of radiologic IH in patients undergoing robotic nephrectomy.

Preoperative Optimization for Abdominal Wall Reconstruction

Patients requiring abdominal wall reconstruction may have medical comorbidities and/or complex defects. Comorbidities such as smoking, diabetes, obesity, cirrhosis, and frailty have been associated with an increased risk of postoperative complications. Prehabilitation strategies are variably associated with improved outcomes. Large hernia defects and loss of domain may present challenges in achieving fascial closure, an important part of restoring abdominal wall function. Prehabilitation of the abdominal wall can be achieved with the use of botulinum toxin A, and preoperative progressive pneumoperitoneum.

Sarcopenia Best Predicts Complications in Free Flap Breast Reconstruction

Breast reconstruction remains a major component of the plastic surgeon's repertoire, especially free-flap breast reconstruction (FFBR), though this is a high-risk surgery in which patient selection is paramount. Preoperative predictors of complication remain mixed in their utility. We sought to determine whether the sarcopenia score, a validated measure of physiologic health, outperforms the body mass index (BMI) and modified frailty index (mFI) in terms of predicting outcomes.

Methods

All patients with at least 6-months follow-up and imaging of the abdomen who underwent FFBR from 2013 to 2022 were included in this study. Appropriate preoperative and postoperative data were included, and sarcopenia scores were extracted from imaging. Complications were defined as any unexpected outcome that required a return to the operating room or readmission. Statistical analysis and regression were performed.

Results

In total, 299 patients were included. Patients were split into groups, based on sarcopenia scores. Patients with lower sarcopenia had significantly more complications than those with higher scores. BMI and mFI both did not correlate with complication rates. Sarcopenia was the only independent predictor of complication severity when other factors were controlled for in a multivariate regression model.

Conclusions

Sarcopenia correlates with the presence of severe complications in patients who undergo FFBR in a stronger fashion to BMI and the mFI. Thus, sarcopenia should be considered in the preoperative evaluation in patients undergoing FFBR.

Sarcopenia and visceral fat in patients with incisional hernia after urgent laparotomy

PURPOSE

Various risk factors have been associated with the development of incisional hernia (IH). Some recent papers underlined that visceral fat could be a reliable indicator. Another risk factor which is of increasing clinical interest is sarcopenia. Recent studies have identified it as an independent predictor of poor postoperative outcomes following abdominal surgery. We aimed to investigate the role of visceral fat and skeletal muscle as emerging risk factors for IH after urgent laparotomy.

METHODS

Patients aged 18 years or older who underwent urgent median laparotomy and with continuous direct suturing of the laparotomy were included. They were categorized into two groups: those with a median IH and those without IH at 12-month follow-up. Demographic data were prospectively collected while CT scans were retrospectively reviewed. The data were compared among two groups.

RESULTS

From January 2018 to May 2021, 364 patients underwent urgent surgery in our Department, of whom 222 were aged >18 years old and underwent median laparotomy. Forty-four patients had diagnosis of median IH, while 41 patients without IH were identified as the control group. Statistically significant differences emerged for BMI and for the area of visceral fat. The association with the presence/absence of sarcopenia was not significant.

CONCLUSION

Even when surgery is performed in urgent settings, it could be important to identify patients at risk, especially as CT scans are generally available for all patients with urgent abdominal disease.

A systematic review of the association between parastomal hernia and sarcopenia

BACKGROUND

Sarcopenia is a multifactorial loss of muscle mass that can complicate surgical outcomes and increase morbidity and mortality. Parastomal hernias can occur after any surgery requiring stoma formation and is an area of concern as a complication as it can require a second surgery or emergency surgical intervention.

AIM

To assess the impact of sarcopenia on parastomal hernia formation in the postoperative period.

METHOD

A systematic search of publications using MEDLINE, CINAHL, and Cochrane databases was conducted in June 2022. Data were extracted, and a narrative synthesis was undertaken. The Crowe Critical Appraisal Tool (CCAT) assessed the quality of the included studies. The systematic review included original research studies, prospective and retrospective designs, and human studies written in English. Reviews, conference papers, opinion papers, and those including participants < 18 years old were excluded. No restrictions on the date of publication and study setting were applied.

RESULTS

Nine studies met the inclusion criteria, and these were conducted between 2016 and 2021; 56% (n = 5) used a retrospective study design. The mean sample size was 242.5 participants (SD = ±358.6). No consistent or standardized way of defining sarcopenia or measuring muscle mass was seen between the studies reviewed. However, 45% (n = 4) of the studies reported a significant relationship between sarcopenia and wound healing complications, including an increased incidence of parastomal and incisional hernias. The average CCAT score was 27.56 (SD = ±4.39).

CONCLUSION

There is no definitive relationship between sarcopenia and hernia development; however, four studies found a significant relationship between sarcopenia and hernia formation. It must also be considered that different disease processes can cause sarcopenia either through the disease process itself, or the treatment and management. More research and consistent measurements are needed before comparable and consistent outcomes can be compiled.

Prediction models in hernia repair: a systematic review

BACKGROUND

Hernias can present with unique challenges when it comes to management and repair. Prediction models can be a useful tool for clinicians to better anticipate and understand the severity of a hernia, the type of surgical technique, or presurgical planning that may be required to treat the patient, and the risk of complications. Our goal is to evaluate and consolidate prediction models in hernia repair present in the literature for which physicians can reference to best improve patient outcomes and postoperative management.

METHODS

We performed a literature search in PubMed using keywords, "rectus width to defect width ratio," "predicting myofascial release," "computed tomography hernia repair prediction," "component separation radiology prediction hernia," "fat volume and hernia repair," "body morphometrics and Query hernia repair," "body morphometrics and reherniation," "computed tomography findings and risk of emergency hernia repair," "loss of domain and hernia radiology," and "volumetry and hernia repair." We searched for publications that used radiographic parameters to predict hernia severity, interventions, and outcomes.

RESULTS

Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), we found twenty-three studies related to prediction models in hernia repair published between 2000 and 2021. We summarized studies pertaining to predicting acute care, predicting operative planning with loss of domain and component separation, predicting complications, paraesophageal hernia predictions, and predicting postoperative respiratory complications.

CONCLUSION

Radiographic prediction models can be an objective and efficient way for surgeons to analyze hernias and better understand a patient's situation so that they can inform patients about the best treatment options and the risk of complications.

Are perioperative outcomes in cancer-related ventral incisional hernia repair worse than in the general population? An Abdominal Core Health Quality Collaborative (ACHQC) database study

PURPOSE

Patients with a history of cancer-related abdominal surgery undergoing incisional hernia repair (IHR) are highly heterogenous and increasingly prevalent. We explored whether cancer surgery should be considered an independent risk factor for worse IHR perioperative outcomes.

METHODS

Patients undergoing IHR between 2018 and 2020 were identified within the Abdominal Core Health Quality Collaborative (ACHQC). Regression models were used to assess associations between cancer operation history and 30 d surgical site occurrences-exclusive of infection (SSO-EIs), surgical site infections (SSIs), reoperations, time to recurrence, and quality of life (QoL) scores. Cancer cohort subgroup analysis was performed for operative approach and mesh location.

RESULTS

8019 patients who underwent IHR were identified in the ACHQC, 1321 of which had a history of cancer operation. Cancer cohort patients were more likely to be older, males with a higher ASA status and lower BMI, and have longer and wider hernias (p < 0.001). After adjusting for confounding, the cancer cohort was less likely to experience SSO-EIs (OR 0.74, 95% CI 0.59-0.94 p = 0.0092) and showed lower odds of SSIs, reoperations, and recurrence (SSI OR 0.7, 95% CI 0.47-1.05, p = 0.0542; reoperation OR 0.66, 95% CI 0.37-1.17, p = 0.1002; recurrence OR 0.8, 95% CI 0.63-1.02, p = 0.08). There was no difference in postoperative QoL scores between cohorts. There were also no differences in perioperative or QoL outcomes within the cancer cohort based on operative approach or mesh location.

CONCLUSION

These data show no evidence that history of cancer operation predisposes patients to worse incisional hernia repair perioperative or quality of life outcomes.

Are preoperative CT variables associated with the success or failure of subsequent ventral hernia repair: nested case-control study

OBJECTIVES

Systematic review of CT measurements to predict the success or failure of subsequent ventral hernia repair has found limited data available in the indexed literature. To rectify this, we investigated multiple preoperative CT metrics to identify if any were associated with postoperative reherniation.

METHODS

Following ethical permission, we identified patients who had undergone ventral hernia repair and had preoperative CT scanning available. Two radiologists made multiple measurements of the hernia and abdominal musculature from these scans, including loss of domain. Patients were divided subsequently into two groups, defined by hernia recurrence at 1-year subsequent to surgery. Hypothesis testing investigated any differences between CT measurements from each group.

RESULTS

One hundred eighty-eight patients (95 male) were identified, 34 (18%) whose hernia had recurred by 1-year. Only three of 34 CT measurements were significantly different when patients whose hernia had recurred were compared to those who had not; these significant findings were assumed contingent on multiple testing. In particular, preoperative hernia volume (recurrence 155.3 cc [IQR 355.65] vs. no recurrence 78.2 [IQR 303.52], p = 0.26) nor loss of domain, whether calculated using the Tanaka (recurrence 0.02 [0.04] vs. no recurrence 0.009 [0.04], p = 0.33) or Sabbagh (recurrence 0.019 [0.05] vs. no recurrence 0.009 [0.04], p = 0.25) methods, differed between significantly between groups.

CONCLUSIONS

Preoperative CT measurements of ventral hernia morphology, including loss of domain, appear unrelated to postoperative recurrence. It is likely that the importance of such measurements to predict recurrence is outweighed by other patient factors and surgical reconstruction technique.

KEY POINTS

• Preoperative CT scanning is often performed for ventral hernia but systematic review revealed little data regarding whether CT variables predict postoperative reherniation. • We found that the large majority of CT measurements, including loss of domain, did not differ significantly between patients whose hernia did and did not recur. • It is likely that the importance of CT measurements to predict recurrence is outweighed by other patient factors and surgical reconstruction technique.

Does sarcopenia affect outcomes in pediatric surgical patients? A scoping review

OBJECTIVE

Adults with sarcopenia have a greater risk of postoperative complications, a higher rate of ICU admission, and an increased length of hospital stay. Few studies have explored the prevalence or importance of sarcopenia in the pediatric population. This study reviews the published literature on sarcopenia in the pediatric population, including pediatric surgery.

METHODS

Original studies related to sarcopenia in children were identified using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR) guidelines and the PubMed database.

RESULTS

A total of 390 articles were screened, with 28 meeting inclusion criteria. Twenty (71%) studies provided a means to define abnormal and 18 studies (64%) showed that a specific disease process could impact lean muscle mass in children. Only 4 (14%) studies associated the change in muscle mass with an outcome. Two studies investigated sarcopenia and outcomes in the pediatric surgical patient and demonstrated associations with worse outcomes.

CONCLUSION

Despite studies showing an association between sarcopenia and negative outcomes in the adult surgical population, there remains a paucity of evidence regarding the impact of sarcopenia on the pediatric population. Future studies are needed to ascertain the relationship between muscle mass and outcomes in pediatric surgical patients.

Age-Related Risk Factors in Ventral Hernia Repairs: A Review and Call to Action

BACKGROUND

As the population ages, the incidence of ventral hernias in older adults is increasing. Ventral hernia repairs (VHR) should not be considered low risk operations, particularly in older adults who are disproportionately affected by multiple age-related factors that can complicate surgery and adversely affect outcomes. Although age-related risk factors have been well established in other surgical fields, there is currently little data describing their impact on VHR.

METHODS

We performed a systematic review of the literature to identify studies that examine the effects of age-related risk factors on VHR outcomes. This was conducted using Cochrane Library, Embase, PubMed (Medline), and Google Scholar databases, all updated through June 2020. We selected relevant studies using the keywords, multimorbidity, comorbidities, polypharmacy, functional dependence, functional status, frailty, cognitive impairment, dementia, sarcopenia, and malnutrition. Primary outcomes include mortality and overall complications following VHR.

RESULTS

We summarize the evidence basis for the significance of age-related risk factors in elective surgery and discuss how these factors increase the risk of adverse outcomes following VHR. In particular, we explore the impact of the following risk factors: multimorbidity, polypharmacy, functional dependence, frailty, cognitive impairment, sarcopenia, and malnutrition. As opposed to chronological age itself, age-related risk factors are more clinically relevant in determining VHR outcomes.

CONCLUSIONS

Given the increasing complexity of VHR, addressing age-related risk factors pre-operatively has the potential to improve surgical outcomes in older adults. Preoperative risk assessment and individualized prehabilitation programs aimed at improving patient-centered outcomes may be particularly useful in this population.

Efficacy Evaluation of a Case-Specific Approach for Surgical Treatment of Inicisional Ventral Hernia

BACKGROUND

The research aims to improve the surgical treatment results of incisional ventral hernia by applying a case-specific approach and a new method of anterior abdominal wall surgery.

MATERIALS AND METHODS

The paper reports the results of the prospective dynamic cohort study on 219 patients under 60 years of age, with small and medium hernias and up to 10 cm defects in the anterior abdominal wall (W1-W2), who underwent incisional ventral hernia treatment with mesh endoprostheses.

RESULTS

The paper offers a selection algorithm for anterior abdominal wall repair surgery and an original proprietary technique. We have developed and described in detail a new 'extra-sublay' technique of surgical intervention. The paper displays the frequency and pattern of complications, as well as the quality of life of patients after different prosthetic surgeries. In the main group, 65.0% of patients showed improvement, 88.4% showed long-term surgical success, 13.6% faced complications, and 4.5% experienced recurrence.

CONCLUSION

After receiving the "on lay" treatment, 59.4% of patients showed positive results, 74.7% showed long-term surgical success, 40% had complications, and 3.1% experienced recurrence. After the "sub lay" intervention, 40.0% of patients demonstrated excellent results, 81.9% reached long-term success, 12% had complications, and 1.4% encountered recurrence.

HIGHLIGHTS

The article shows a selection algorithm for anterior abdominal wall plastic repair method.One of the factors that cause relapses and ventral hernias themselves is obesity.The authors' method of the VH surgical treatment has shown good results.Excellent indicators showed 65.0% of patients of the main group.

Sarcopenia: What a Surgeon Should Know

Sarcopenia is an increasingly frequent syndrome characterized by generalized and progressive loss of muscle mass, reduction in muscle strength, and resultant functional impairment. This condition is associated with increased risk of falls and fractures, disability, and increased risk of death. When a sarcopenic patient undergoes major surgery, it has a higher risk of complications and postoperative mortality because of less resistance to surgical stress. It is not easy to recognize a sarcopenic patient preoperatively, but this is essential to evaluate the correct risk to benefit ratio. The role of sarcopenia in surgical patients has been studied for both oncological and non-oncological surgery. For correct surgical planning, data about sarcopenia are essential to design a correct tailored treatment.

A Novel Technique for Radiographic Diagnosis of Sarcopenia that Accurately Predicts Postoperative Complications in Lower Extremity Free Flap Patients

INTRODUCTION

 Sarcopenia is linked to poor outcomes throughout the surgical literature and can be assessed on preoperative imaging to potentially aid in risk stratification. This study examined the effects of sarcopenia on surgical morbidity following lower extremity (LE) reconstruction, and also compared two methods of assessment, one of which is novel ("ellipse method").

METHODS

 A retrospective cohort study of 50 patients receiving free flap-based reconstruction of the LE was performed. Bilateral psoas density and area were quantified at L4 through tracing ("traditional method") and encircling ("ellipse method") to calculate Hounsfield unit average calculation (HUAC). Logistic regression and receiving operator curve analysis for the primary outcome of any postoperative complication was used to determine HUAC cutoffs (≤ 20.7 vs. ≤ 20.6) for sarcopenia. Risk of complications associated with sarcopenia was evaluated using Fisher's exact tests.

RESULTS

 Twelve patients (24%) met criteria for sarcopenia via the traditional method and 16 (32%) via the ellipse method. By both methods, sarcopenic patients were older and more often female and diabetic. These patients also had higher American Society of Anesthesiologists scores and lower serum prealbumin levels. The ellipse method was found to be more accurate, sensitive, and specific than the traditional method in predicting postoperative morbidity (p = 0.009). Via the ellipse method, sarcopenic patients were at higher risk for any complication (p = 0.002) and were at a higher risk for a deep vein thrombus or pulmonary embolism via the traditional method (p = 0.047).

CONCLUSION

 Sarcopenia is associated with greater pre- and postoperative morbidity in LE reconstruction. The novel ellipse method is a simplified and accurate method of assessing sarcopenia that can be easily performed in the clinical setting.

Computed Tomography Image Analysis in Abdominal Wall Reconstruction: A Systematic Review

Ventral hernias are a complex and costly burden to the health care system. Although preoperative radiologic imaging is commonly performed, the plethora of anatomic features present and available in routine imaging are seldomly quantified and integrated into patient selection, preoperative risk stratification, and perioperative planning. We herein aimed to critically examine the current state of computed tomography feature application in predicting surgical outcomes.

Methods

A systematic review was conducted in accordance with the Preferred Reporting Items for a Systematic Review and Meta-Analysis (PRISMA) checklist. PubMed, MEDLINE, and Embase databases were reviewed under search syntax "computed tomography imaging" and "abdominal hernia" for papers published between 2000 and 2020.

Results

Of the initial 1922 studies, 12 papers met inclusion and exclusion criteria. The most frequently used radiologic features were hernia volume (n = 9), subcutaneous fat volume (n = 5), and defect size (n = 8). Outcomes included both complications and need for surgical intervention. Median area under the curve (AUC) and odds ratio were 0.68 (±0.16) and 1.12 (±0.39), respectively. The best predictive feature was hernia neck ratio > 2.5 (AUC 0.903).

Conclusions

Computed tomography feature selection offers hernia surgeons an opportunity to identify, quantify, and integrate routinely available morphologic tissue features into preoperative decision-making. Despite being in its early stages, future surgeons and researchers will soon be able to integrate 3D volumetric analysis and complex machine learning and neural network models to improvement patient care.

The impact of sarcopenia on oncologic abdominal wall reconstruction

BACKGROUND AND OBJECTIVES

Sarcopenia is an objective measure of patient frailty and is a predictor of adverse surgical outcomes. We hypothesized that sarcopenia is associated with increased surgical site occurrence (SSO) and hernia occurrences in patients undergoing oncologic abdominal wall reconstruction.

METHODS

Consecutive patients who underwent abdominal wall reconstruction (AWR) for an abdominal wall ablative defect at a single center from 2005 to 2015 were evaluated. The total psoas index (TPI) was used to define sarcopenia. The primary endpoint of the study was hernia occurrence; (SSO) was a secondary outcome measure.

RESULTS

Eighty-six patients met the inclusion criteria. Multivariate analysis demonstrated that sarcopenia increased the risk of hernia more than threefold, trending toward significance (OR = 3.3; 95% CI: 0.69-15.4; P = .13). Multivariate logistic regression demonstrated that preoperative radiotherapy (OR = 4.8, 95% CI: 1.4-16; P = .01) and obesity (OR = 4.9, 95% CI: 1.5-16.3; P =.009) were independent predictors of developing an SSO.

CONCLUSIONS

Sarcopenia, as defined by TPI, is correlated with hernia occurrence, but not SSO. These findings emphasize the importance of preoperative fitness and nutritional optimization and provide useful information for preoperative counseling and risk stratification.

The effect of sarcopenia on perioperative complications in abdominally based free-flap breast reconstruction

PURPOSE

The identification of patient-specific risk factors, which predict morbidity following abdominally based microvascular breast reconstruction is difficult. Sarcopenia is a proxy for patient frailty and is an independent predictor of complications in a myriad of surgical disciplines. We predict that sarcopenic patients will be at higher risk for surgical complications following abdominally based microvascular breast reconstruction.

METHODS

A retrospective study of all patients who underwent delayed abdominally based autologous breast reconstruction following postmastectomy radiation therapy from 2007 to 2013 at a single institution was conducted. Univariate and multiple logistic regression models were used to assess the effect of sarcopenia on postoperative outcomes.

RESULTS

Two hundred and eight patients met the inclusion criteria, of which 30 met criteria for sarcopenia (14.1%). There were no significant differences in demographics between groups. There were no significant differences in minor (36.7% vs 44.4%; P = .43) or major (16.7% vs 25.3%; P = .36) complications between groups as well as hospital length of stay. Multivariable logistic regression demonstrated that a staged reconstruction with the use of a tissue expander was the only consistent variable, which predicted major complications (OR, 2.24; 95% CI, 1.18-4.64; P = .015).

CONCLUSIONS

Sarcopenia does not predispose to minor or major surgical complications in patients who undergo abdominally based microsurgical breast reconstruction.

Sarcopenia in Patients Undergoing Open Ventral Hernia Repair

Radiologic indicators of sarcopenia have been associated with adverse operative outcomes in some surgical populations. This study assesses the association of radiologic indicators of frailty with outcomes after open ventral hernia repair (OVHR). A prospective, institutional, herniaspecific database was queried for patients undergoing OVHR from 2007 to 2018 with preoperative CT. Psoas muscle cross-sectional area at L3 was measured and adjusted for height (skeletal muscle index (SMI)). L3 vertebral body density (L3 VBD) was measured. Demographics and outcomes were evaluated as related to SMI and L3 VBD. Of 1178 patients, 9.7 per cent of females and 15.8 per cent of males had sarcopenia and 11.6 per cent of females and 9.2 per cent of males had osteopenia. Neither sarcopenia nor osteopenia were associated with outcomes of wound infection, read-mission, reoperation, hernia recurrence, or major complications. When examined as continuous variables or by quartile, SMI and L3 VBD were not associated with adverse outcomes, including in subsets of male or female patients, the elderly, contaminated cases, and the obese. Radiologic markers of sarcopenia and osteopenia are not associated with adverse outcomes after OVHR. Further study should examine age or other potential predictors of outcomes in this patient population, such as independent status.

The emerging role of sarcopenia as a prognostic indicator in patients undergoing abdominal wall hernia repairs: a systematic review of the literature

BACKGROUND

There is strong evidence suggesting that excessive fat distribution, for example, in the bowel mesentery or a reduction in lean body mass (sarcopenia) can influence short-, mid-, and long-term outcomes from patients undergoing various types of surgery. Body composition (BC) analysis aims to measure and quantify this into a parameter that can be used to assess patients being treated for abdominal wall hernia (AWH). This study aims to review the evidence linking quantification of BC with short- and long-term abdominal wall hernia repair outcomes.

METHODS

A systematic review was performed according to the PRISMA guidelines. The literature search was performed on all studies that included BC analysis in patients undergoing treatment for AWH using Medline, Google Scholar and Cochrane databases by two independent reviewers. Outcomes of interest included short-term recovery, recurrence outcomes, and long-term data.

RESULTS

201 studies were identified, of which 4 met the inclusion criteria. None of the studies were randomized controlled trials and all were cohort studies. There was considerable variability in the landmark axial levels and skeletal muscle(s) chosen for analysis, alongside the methods of measuring the cross-sectional area and the parameters used to define sarcopenia. Only two studies identified an increased risk of postoperative complications associated with the presence of sarcopenia. This included an increased risk of hernia recurrence, postoperative ileus and prolonged hospitalisation.

CONCLUSION

There is some evidence to suggest that BC techniques could be used to help predict surgical outcomes and allow early optimisation in AWH patients. However, the lack of consistency in chosen methodology, combined with the outdated definitions of sarcopenia, makes drawing any conclusions difficult. Whether body composition modification can be used to improve outcomes remains to be determined.

Sarcopenia Is a Risk Factor for Infection for Patients Undergoing Abdominoperineal Resection and Flap-based Reconstruction

Abdominoperineal resection (APR) carries a high risk of morbidity. Preoperative risk assessment can help with patient counseling, minimize adverse outcomes, and guide surgeons in their choice of reconstruction. This study examined the impact of sarcopenia (low lean muscle mass) on postoperative complications after APR.