Vaccination Status is Not Associated With Adverse Postoperative Outcomes Following Total Joint Arthroplasty in Patients With a Preoperative COVID-19 Diagnosis

Background

Previous studies have shown that COVID-19 diagnosis increases rates of perioperative infection, readmission, and other complications following surgery. However, the effect of the COVID vaccine in such patients is unknown. We hypothesized that of the patients with COVID diagnosis, vaccinated patients with COVID-19 diagnosis would have lower rates of adverse complications compared to unvaccinated patients undergoing total joint arthroplasty (TJA).

Methods

Using a national database registry, patients aged less than 85 years undergoing elective primary total knee or total hip arthroplasty with at least 90 days of follow-up were included during the first year of COVID-19 pandemic from April 2020-April 2021. Patients were included in the COVID-19 cohort if they had a diagnosis on the day of surgery or within 30 days prior to surgery. Patients with a history of malignancy, joint injection, femoral neck fractures, tibial fractures, and those undergoing revision arthroplasty were excluded from the study. All comparisons were performed using multivariate logistic regression with significance set at P < .05. Odds ratio and 95% confidence interval were reported for all comparisons.

Results

There were a total of 1280 patients with COVID-19 diagnosis matched with 3831 patients without COVID-19 diagnosis. Patients with a COVID-19 diagnosis were at an increased risk of pneumonia, acute kidney injury, urinary tract infection, and readmission following TJA compared to patients without COVID-19 diagnosis. However, there were no differences in any complications assessed between vaccinated patients and unvaccinated patients with COVID-19 diagnosis following TJA.

Conclusions

This study confirms that patients with a COVID-19 diagnosis in the 30 days prior to TJA, whether vaccinated or not, have increased risks of medical complications and hospital utilization. However, this study demonstrates that vaccination status does not appear to be associated with the incidence of adverse postoperative events in patients with a COVID-19 diagnosis prior to TJA.

Association Between Preoperative COVID-19 Infection and Postoperative Outcomes in Patients with Obstructive Sleep Apnea Undergoing Metabolic Surgery: A Retrospective Analysis

BACKGROUND

Obstructive sleep apnea (OSA) is highly prevalent in patients undergoing metabolic surgery and can complicate recovery. While OSA and COVID-19 share common pathophysiological mechanisms involving systemic inflammation and respiratory dysfunction, their combined impact on surgical outcomes remains poorly understood.

METHODS

Using TriNetX data from June 2022 to December 2024, we retrospectively analyzed adult patients with OSA undergoing metabolic surgery. Patients were divided into two groups: those with COVID-19 infection within 4 weeks before surgery and controls without infection in the preceding 8 weeks. After propensity score matching, 8,733 pairs were analyzed. The primary outcomes included postoperative pneumonia and respiratory failure within 30 days. The secondary outcomes included acute kidney injury (AKI), intensive care unit (ICU) admission, mortality, surgical site infection (SSI), emergency department (ED) visit, and deep vein thrombosis (DVT).

RESULTS

No significant differences were found between the COVID-19 and control groups in postoperative pneumonia (0.28% vs. 0.32%, p = 0.5785) or respiratory failure (0.30% vs. 0.38%, p = 0.3613). Secondary outcomes, including the incidence of AKI, ICU admission, mortality, SSI, ED visit, and DVT, showed no significant differences. Chronic obstructive pulmonary disease (COPD) emerged as the strongest risk factor for both pneumonia (odds ratio 6.06, p = 0.002) and respiratory failure (odds ratio 4.22, p = 0.013).

CONCLUSION

Recent preoperative COVID-19 infection did not significantly impact postoperative outcomes in patients with OSA undergoing metabolic surgery. However, the presence of COPD substantially increases the risk of respiratory complications, suggesting the need for additional preoperative optimization in these patients.

Mega-authorship implications: How many scientists can fit into one cell?

The past 20 years has seen a significant increase in articles with 500 or more authors. This increase has presented problems in terms of determining true authorship versus other types of contribution, issues with database metadata and data output, and publication length. Using items with 500+ authors deemed as mega-author titles, a total of 5,533 mega-author items were identified using InCites. Metadata about the items was then gathered from Web of Science and Scopus. Close examination of these items found that the vast majority of these covered physics topics, with medicine a far distant second place and only minor representation from other science fields. This mega-authorship saw significant events that appear to correspond to similar events in the Large Hadron Collider's timeline, indicating that the projects for the collider are driving this heavy output. Some solutions are offered for the problems resulting from this phenomenon, partially driven by recommendations from the International Committee of Medical Journal Editors.

Living donor liver transplant for Alcohol-Associated Hepatitis: considerations and global perspectives

INTRODUCTION

In carefully selected individuals, outcomes of early deceased donor liver transplantation (<6 months of sobriety) for severe alcohol-associated hepatitis (AAH) are similar to transplant for other indications. There is increasing interest in the expansion of living donor liver transplant (LDLT) for AAH.

AREAS COVERED

A literature search was conducted in PubMed using search terms 'alcoholic hepatitis,' 'alcohol-associated hepatitis,' 'acute liver failure' and 'living donor liver transplant' between 1995 and 2025. Additional data sources were the International Registry in Organ Donation and Transplantation, and the Scientific Registry of Transplant Recipients. We summarize the global burden of alcohol-associated liver disease (ALD), and the emergence of early LT for AAH. Donor- and recipient-specific factors are explored, as well as societal considerations including equitable allocation and health system financial impact. Finally, current LT practices for ALD by region are reviewed, with a focus on readiness for expansion of LDLT for AAH.

EXPERT OPINION

Use of LDLT for AAH is infrequent, but countries with experience in LT for AAH and/or LDLT for acute liver failure are most poised to expand to LDLT for AAH. Progress is needed in assessing risk of return to harmful drinking and improving management of alcohol use disorder.

Pulmonary and functional hallmarks after SARS-CoV-2 infection across three WHO severity level-groups: an observational study

Background

The manifestations of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection range from flu-like symptoms to severe lung disease. The consequences of this inflammatory process impact overall function, which can be detected through both short- to long-term assessments. This study aimed to assess the pulmonary functional and structural characteristics of post-SARS-CoV-2 infection in patients with mild/moderate, severe, and critical clinical presentations.

Methods

An observational, analytical, and cross-sectional study was conducted between 2020 and 2022, including participants with a confirmed diagnosis of coronavirus disease (COVID)-19, with mild/moderate (G1), severe (G2), and critical (G3) clinical presentations, all evaluated at least 3 months after acute infection. Spirometry, impulse oscillometry, fractional exhaled nitric oxide (FeNO), chest computed tomography, the 6-min walk test (6MWT), hand grip strength, maximum inspiratory pressure, and maximum expiratory pressure were assessed.

Results

We enrolled 210 participants aged 18-70 years, 32.6% of whom were male, with older age observed in G3. The participants were grouped as follows: G1 (42.3%), G2 (25.7%), and G3 (31.9%). Percentage of predicted X5 differed between G1 and G2, being higher in G1. The percentage of predicted forced vital capacity (FVC) according to the Global Lung Function Initiative and its z-score were higher in G1. The FVC by Pereira was lower in G3 compared to G1. The percentage of predicted forced expiratory volume in 1 s (FEV1) by Pereira was also lower in G3. The Tiffeneau (FEV1/FVC) index was different among groups, increasing with disease severity. The percentage of predicted forced expiratory flow rate at 25-75% (FEF25-75%) of the FVC and FeNO were both higher in G2 than G1. Chest computed tomography revealed the presence of interstitial abnormalities, associated with disease severity. The respiratory muscle strength evaluation showed an association between higher maximum expiratory pressure values in G3 compared to G1, but no association with maximum inspiratory pressure was observed. The 6MWT distance covered decreased with increasing severity, with a lower percentage of predicted values in G3 compared to G1. The right-hand grip strength was also lower in G3 compared to G1.

Conclusion

Alterations in pulmonary and functional markers were observed in post-COVID-19 evaluations, increasing with disease severity, as seen in G2 and G3. These findings highlight the complexity of post-COVID-19 functional assessments, given the long-term pulmonary sequelae and the consequent impairment of functional capacity.

Nomogram for prediction of severe postoperative complications in elective hepato-pancreato-biliary surgery after COVID-19 breakthrough infection: A large multicenter study

BACKGROUND

Currently, there is a deficiency in a strong risk prediction framework for precisely evaluating the likelihood of severe postoperative complications in patients undergoing elective hepato-pancreato-biliary surgery subsequent to experiencing breakthrough infection of coronavirus disease 2019 (COVID-19). This study aimed to find factors predicting postoperative complications and construct an innovative nomogram to pinpoint patients who were susceptible to developing severe complications following breakthrough infection of COVID-19 after undergoing elective hepato-pancreato-biliary surgery.

METHODS

This multicenter retrospective cohort study included consecutive patients who underwent elective hepato-pancreato-biliary surgeries between January 3 and April 1, 2023 from four hospitals in China. All of these patients had experienced breakthrough infection of COVID-19 prior to their surgeries. Additionally, two groups of patients without preoperative COVID-19 infection were included as comparative controls. Surgical complications were meticulously documented and evaluated using the comprehensive complication index (CCI), which ranged from 0 (uneventful course) to 100 (death). A CCI value of 20.9 was identified as the threshold for defining severe complications.

RESULTS

Among 2636 patients who were included in this study, 873 were included in the reference group I, 941 in the reference group II, 389 in the internal cohort, and 433 in the external validation cohort. Multivariate logistic regression analysis revealed that completing a full course of COVID-19 vaccination > 6 months before surgery, undergoing surgery within 4 weeks of diagnosis of COVID-19 breakthrough infection, operation duration of 4 h or longer, cancer-related surgery, and major surgical procedures were significantly linked to a CCI > 20.9. A nomogram model was constructed utilizing CCI > 20.9 in the training cohort [area under the curve (AUC): 0.919, 95% confidence interval (CI): 0.881-0.957], the internal validation cohort (AUC: 0.910, 95% CI: 0.847-0.973), and the external validation cohort (AUC: 0.841, 95% CI: 0.799-0.883). The calibration curve for the probability of CCI > 20.9 demonstrated good agreement between the predictions made by the nomogram and the actual observations.

CONCLUSIONS

The developed model holds significant potential in aiding clinicians with clinical decision-making and risk stratification for patients who have experienced breakthrough infection of COVID-19 prior to undergoing elective hepato-pancreato-biliary surgery.

Post-living donor liver transplant biliary strictures: prevalence, predictors, and long-term outcomes in a retrospective study

Background

Post-liver transplant biliary strictures are a common cause of morbidity among patients who have undergone living donor liver transplantation (LDLT). Limited data are available concerning the response rates to various treatment modalities and the long-term outcomes for these individuals.

Methods

This study was a retrospective analysis of a prospectively collected database, including adult patients aged 18 years or older who underwent LDLT between 2006 and 2022.

Results

Between 2006 and 2022, a total of 3,550 patients underwent liver transplantation. After applying exclusion criteria, 2,956 patients were included in the analysis. During the study period, 344 patients (11.6%) developed biliary strictures. Of these, 77.0% underwent endoscopic retrograde cholangiopancreatography as the primary treatment for biliary strictures, while the remainder received percutaneous transhepatic biliary drainage. Identified risk factors for post-liver transplant biliary strictures included the presence of multiple biliary anastomoses, bile leak, and older donor and recipient ages. The overall graft and patient survival rates were comparable between patients with and without biliary strictures, at both 1 year (93.0% vs. 96.3%) and 5 years (82.3% vs. 79.2%).

Conclusions

Biliary strictures are observed in approximately 11% of recipients following LDLT. While the presence of biliary strictures is associated with increased morbidity, it does not significantly impact patient survival.

Value of preoperative APRI and FIB-4 in assessing short-term prognosis after Kasai portoenterostomy

Objective

To explore the value of preoperative Aspartate Aminotransferase-to-Platelet Ratio Index (APRI) and Fibrosis-4 score (FIB-4) in predicting short-term prognosis of children with biliary atresia (BA) undergoing Kasai portoenterostomy (KPE).

Methods

Clinical data from children who underwent KPE were analyzed. Patients were divided into two groups based on their 2-year native liver survival after KPE. General information and laboratory findings were collected before KPE. The difference in liver fibrosis between the two groups was analyzed. The predictive efficacy of each index for short-term prognosis of children with BA was evaluated using the receiver operating characteristic curve.

Results

The APRI and FIB-4 in the good prognosis group were lower than those in the poor prognosis group (p=0.008 and 0.023, respectively), and postoperative jaundice clearance rate was higher (p=0.002). In the poor prognosis group, gamma-glutamyl transpeptidase levels in the F3+F4 fibrosis subgroup were significantly higher than those in the F1 subgroup (p=0.038). The area under the curve (AUC) for preoperative APRI in predicting short-term prognosis was the highest at 0.667, with a cut-off value of 1.190. The AUC for preoperative FIB-4 was predicted to be 0.642. The combination of preoperative APRI and alanine aminotransferase showed a higher AUC for prognosis prediction compared with either marker alone.

Conclusions

Preoperative APRI and FIB-4 may havepredictive values for short-term prognosis. The predictive value of APRI and FIB-4 combined with liver function indicators for the short-term prognosis of children is superior to that of a single indicator, but the results are not satisfactory.

Implementation of robotic and laparoscopic hepatopancreatobiliary surgery in low- and middle-income settings: a systematic review and meta-analysis

BACKGROUND

Despite numerous barriers, the application of minimally invasive surgery (MIS) for hepatopancreatobiliary (HPB) conditions has been increasing globally. This study aims to review the current status of HPB MIS in LMICs.

METHODS

Relevant databases were searched, identifying 3452 publications, 38 of which met the inclusion criteria. Meta-analysis of outcomes was carried out using "R" statistical software.

RESULTS

This study reviewed reports of application of MIS for HPB conditions in LMICs, analyzing a total of 3272 procedures. India (66.87 %) and Egypt (20.11 %) contributed majorly to the procedures reviewed. Others were from Indonesia (8.68 %), Colombia (3.06 %), Pakistan (0.67 %), Sri Lanka (0.34 %), Trinidad and Tobago (0.18 %), and Nigeria (0.09 %). India was the only LMIC with robotic HPB MIS. The majority of the procedures were biliary (74.88 %). Basic procedures accounted for 55.63 %, while 44.37 % were advanced. The overall conversion rate and prevalence of morbidity were 8 % [95 % CI: 5; 13], and 15 % [95 % CI: 9; 22], respectively. Robotics was associated with higher conversion (14 % vs 6 %, p < 0.01) but lower morbidity (10 % vs 16 %, p = 0.91), compared to laparoscopic surgery. There were 5 cases of mortality from laparoscopy.

CONCLUSION

The outcomes in this systematic review, compared to findings in other settings indicate successful implementation of HPB MIS in LMICs.

A comprehensive clinical and microbiological study on the diagnosis and management of cholangitis in patients with biliary atresia undergoing kasai portoenterostomy

BACKGROUND AND OBJECTIVES

Kasai-portoenterostomy (KPE) is the initial attempt to restore the bile flow and salvage the native liver in biliary atresia (BA) patients. Cholangitis is a frequent complication after KPE and adequate treatment impacts the long-term outcome. The aim of our study is to assess the severity of cholangitis episodes in a cohort of BA patients post KPE, identify the causative agents, using several diagnostic methods, as well as to assess the tolerability and efficacy of our antimicrobial protocol.

METHODS

This analytical retrospective observational study, conducted at Pediatric Hepatology Unit, Cairo University Pediatric Hospital, included infants and children with cholangitis post-KPE enrolled over 30 months. Clinical data collection, basic laboratory investigations inflammatory markers, B-D glucan, blood culture, 16SrDNA, 18SrDNA were performed in all enrolled patients. Cholangitis episodes were treated with intravenous antibiotics according to our antimicrobial protocol that has been implemented in conjunction with the antimicrobial stewardship committee.

RESULTS

This study included 30 post-KPE patients, who experienced 47 episodes of cholangitis. Twenty-five episodes of cholangitis were culture positive cholangitis (positive blood culture and/or PCR results and/or liver biopsy). Klebsiella Variicola and Klebsiella pneumoniae were the most prevalent pathogens in 13 and seven cultures, respectively. Meropenem was the most successful antibiotic in the eradication of infection in 11(23.4%) episodes. Culture positive cholangitis showed increased incidence of sepsis and worse outcome in comparison to culture negative cholangitis. The severity of cholangitis was classified into 16 patients (34%) with infection, 28 (60%) sepsis, one (2%) severe sepsis and two (4%) septic shock.

CONCLUSION

Almost half of cholangitis episodes were culture-positive; the commonest pathogen was Klebsiella, showing more severe sepsis and worse outcome.

Venous thromboembolism risk in the postoperative interval during the COVID-19 pandemic: meta-analysis

BACKGROUND

During the COVID-19 pandemic, global trends emerged, indicating increased venous thromboembolism (VTE) incidence among postoperative patients, potentially attributable to perioperative COVID-19 infection. However, there are insufficient data on VTE incidence among postoperative patients in the context of the pandemic. The aim of this study was to examine the global incidence of postoperative VTE during the COVID-19 pandemic.

METHODS

A systematic search of MEDLINE and Embase databases, as well as three other registered databases, was conducted from 1 January 2019 to 3 November 2023, with pre-registration in PROSPERO, the international prospective register of systematic reviews (CRD42023460464). Any study reporting patients aged ≥18 years undergoing surgery during the COVID-19 pandemic was included. Outcomes were aggregated absolute and unadjusted relative risks, plus incidence rates per 1000 person-years, of 30- or 90-day postoperative VTE in patients operated on before or during the COVID-19 pandemic and those with or without perioperative COVID-19 infection during the pandemic.

RESULTS

Of 5943 studies, 17 were available for meta-analysis, reporting on 3 035 037 patients. VTE incidence rates in perioperative COVID-19-positive compared with COVID-19-negative patients were significantly higher after total joint arthroplasty (244 (95% c.i. 110 to 541) versus 71 (95% c.i. 47 to 108) per 1000 person-years), other orthopaedic surgery (253 (95% c.i. 240 to 266) versus 138 (95% c.i. 84 to 229) per 1000 person-years), and emergency general and gastrointestinal surgery (474 (95% c.i. 226 to 995) versus 97 (95% c.i. 61 to 157) per 1000 person-years). No significant differences in VTE rates were reported in studies comparing pre-pandemic and pandemic VTE incidence rates.

CONCLUSION

There were consistent increased VTE rates in perioperative COVID-19-positive patients, particularly those undergoing orthopaedic surgery, and emergency general and gastrointestinal surgery. Further investigation is required to delineate postoperative VTE risk and how it varies by COVID-19 variant and vaccination to inform future practice.

Grading portal vein stenosis following partial hepatectomy by high-frequency ultrasonography: an in vivo study of rats

PURPOSE

To evaluate the diagnostic value of ultrasound in grading portal vein stenosis (PVS) in a rat model of 70% partial hepatectomy (PH).

METHODS

A total of 96 Sprague-Dawley rats were randomly divided into a PH group and PVS groups with mild, moderate, and severe PVS following PH. Hemodynamic parameters were measured using high-frequency ultrasound (5-12 MHz high-frequency linear transducer), including pre-stenotic, stenotic, and post-stenotic portal vein diameters (PVDpre, PVDs, PVDpost); pre-stenotic and stenotic portal vein velocity (PVVpre, PVVs); hepatic artery peak systolic velocity (PSV); end-diastolic velocity; and resistive index. The portal vein diameter ratio (PVDR) and portal vein velocity ratio (PVVR) were calculated using the following formulas: PVDR=PVDpre/PVDs and PVVR=PVVs/PVVpre. The value of these parameters in grading PVS was assessed.

RESULTS

Portal vein hemodynamics showed gradient changes as PVS aggravated. For identifying >50% PVS, PVDs and PVDR were the best parameters, with areas under the curve (AUC) of 0.85 and 0.86, respectively. For identifying >65% PVS, PVDs, PVDR, and PVVR were relatively better, with AUCs of 0.94, 0.85, and 0.88, respectively. The AUC of hepatic artery PSV for identifying >65% PVS was 0.733.

CONCLUSION

High-frequency ultrasonography can be used to grade PVS in rats, with PVDs, PVDR, and PVVR being particularly useful. Hepatic artery PSV may help in predicting >65% PVS. These findings provide valuable information for PVS rat model research and offer an experimental basis for further studies on PVS evaluation in living-donor liver transplantation (LDLT).

CLINICAL SIGNIFICANCE

Ultrasonography serves as a first-line technology for diagnosing PVS following LDLT. However, the grading criteria for PVS severity remain unclear. Investigating the use of ultrasonic hemodynamics in the early diagnosis of PVS and grading stenosis severity is important for early postoperative intervention and improving recipient survival rates.

The negative effects of long COVID-19 on cardiovascular health and implications for the presurgical examination

CONTEXT

In 2019, emergence of the novel and communicable severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection took scientific communities by surprise and imposed significant burden on healthcare systems globally. Although the advent of this disease piqued the interest of academic centers, healthcare systems, and the general public, there is still much yet to be elucidated regarding epidemiology, pathophysiology, and long-term impacts of coronavirus disease 2019 (COVID-19). It has been established that long COVID-19 can impact multiple organ systems, including the cardiovascular system, unfavorably. Although the pathophysiology of this damage is not well understood, adverse sequelae may range from chest pain and arrhythmias to heart failure (HF), myocardial infarction, or sudden cardiac death. For any postacute COVID-19 patient requiring a surgical procedure, the potential for cardiac injury secondary to long COVID-19 must be considered in the preoperative cardiac examination.

OBJECTIVES

This literature review serves to add to the growing body of literature exploring postacute cardiovascular outcomes of COVID-19, with a focus on presurgical cardiac clearance in the adult patient. Specifically, this review studies the prevalence of cardiovascular symptomatology including chest pain, arrhythmias, blood pressure changes, myo-/pericarditis, HF, cardiomyopathy, orthostatic intolerance, and thromboembolism. Although current evidence is scarce in both quality and quantity, it is the goal that this review will highlight the negative impacts of long COVID-19 on cardiovascular health and encourage providers to be cognizant of potential sequelae in the context of the presurgical examination.

METHODS

For this study, peer-reviewed and journal-published articles were selected based on established inclusion and exclusion criteria to address the question "How does long COVID-19 impact the presurgical cardiac examination of an adult scheduled to undergo a noncardiac procedure?" Inclusion criteria included human studies conducted in adult patients and published in peer-reviewed journals up until May 2024 examining the effects of long-COVID-19 infection on the cardiovascular system. Exclusion criteria eliminated unpublished reports, preprints, duplicate articles, literature regarding coronavirus strains other than COVID-19, studies regarding post-COVID-19 vaccination complications, animal studies, and studies conducted in people younger than 18 years of age. A total of 6,675 studies were retrieved from PubMed and Google Scholar. Following screening, 60 studies were included in final consideration.

RESULTS

Cardiovascular symptoms of postacute COVID-19 infection were encountered with the following percentages prevalence (total numbers of articles mentioning symptom/total number of articles [60]): chest pain (83.3), arrhythmias (88.3), hypertension (40.0), hypotension (16.7), myocarditis (80.0), pericarditis (51.7), HF (70.0), cardiomyopathy (55.0), orthostatic intolerance (56.7), and thromboembolic events (85.0).

CONCLUSIONS

The presence of persisting COVID symptoms may negatively impact the patient's physical examination, blood tests, electrocardiogram (ECG), imaging, and/or echocardiogram. Cardiac conditions associated with long COVID require special attention in the context of the presurgical candidate due to an increased risk of sudden cardiac death, myocarditis, stroke, and myocardial infarction - even in those who were healthy prior to acute COVID-19 infection. Until more specific scientific evidence comes to light, care of these patients should be viewed through the prism of the best practices already in use and clinicians should maintain a low threshold to pursue more extensive cardiac workup prior to surgery.

The side effects of the pandemic on all-cause postoperative mortality in a COVID reference Hospital in Brazil: a before and after cohort study with 15156 patients

BACKGROUND

Before the pandemic, healthcare systems in Low-Middle Income Countries (LMIC) experienced a limited capacity to treat postoperative complications. It is uncertain whether the interference of the Coronavirus (COVID-19) pandemic on surgical systems has increased postoperative mortality.

METHODS

This before and after cohort study aimed to assess the pandemic's impact on in-hospital postoperative mortality in a university COVID-19 reference hospital in southern Brazil. Data from patients who underwent surgery before (January 2018 to December 2019) the pandemic were compared to data from patients who underwent surgery during the pandemic (February to December 2020). The primary outcome was in-hospital mortality. We developed Poisson regression models to examine the mortality risk of being operated on during the COVID-19 pandemic.

RESULTS

We assessed 15156 surgical patients, 12207 of whom underwent surgery before the pandemic and 2949 during the first year of the pandemic. Mortality rates were 2.5% (309/12207) in the pre-pandemic versus 7.2% (212/2949) in the pandemic. Of these, 25.8% (32/124) of patients with COVID-19 and 6.4% (80/2816) of patients without COVID-19 died. The proportion of urgent surgeries and ASA-PS III was higher in the pandemic group. After adjusting for mortality-related variables, the Relative Risk (RR) associated with undergoing surgery during the pandemic was 1.51 (95% CI 1.27 to 1.79). We excluded COVID-19-positive to perform a sensitivity analysis that confirmed the increased risk of undergoing surgery during the pandemic RR = 1.50 (95% CI 1.27 to 1.78).

CONCLUSION

The substantial number of additional deaths, even amongst those without COVID-19 infection, suggests the pandemic disrupted the surgical service in an LMIC context. Fragile surgical systems may suffer more significant adverse impacts from external stressors such as a pandemic, and urging measures are needed to increase their performance and resilience.

SAGES guidelines update to laparoscopy in the era of COVID-19

BACKGROUND

Patients requiring cholecystectomy or appendectomy may present with concomitant COVID infection in both the inpatient and outpatient scenarios. It is unclear whether these patients benefit more from operative or nonoperative management in the setting of active COVID infection. These guidelines seek to address urgent and elective clinical scenarios.

METHODS

A systematic review was conducted to address these questions. These results were then presented to an interdisciplinary panel that formulated recommendations based on the best available evidence or utilized expert opinion when the evidence base was lacking.

RESULTS

Conditional recommendations were made in favor of (1) either operative or nonoperative management of COVID-positive patients with appendicitis or cholecystitis and (2) delaying operations by more than six weeks in patients who test positive for COVID in the elective setting.

CONCLUSIONS

These recommendations should provide guidance regarding the management of surgical patients with concomitant COVID infection. This guideline also identifies important areas where future research should focus to strengthen the evidence base.

The Disproportionate Increase in Pediatric Laparoscopic Cholecystectomies During the COVID-19 Pandemic

INTRODUCTION

The COVID-19 pandemic limited many patients to an unhealthy, sedentary lifestyle, with literature specifically demonstrating an increasing trend of obesity in pediatric patients. The goal of this study is to assess the relationship between the COVID-19 pandemic and total number of laparoscopic cholecystectomies performed pre-COVID compared to during COVID.

METHODS

Data between 2017 and 2021 were collected from the National Surgical Quality Improvement Program on patients ≤18 ys who underwent elective or urgent cholecystectomies. Data was categorized as pre-COVID (2017-2018) or during COVID (2020-2021). Analysis subcategories included case acuity (elective versus urgent versus emergent), wound classification, race, weight, and complications.

RESULTS

There were 13,579 pediatric laparoscopic cholecystectomies from 2017 to 2021. The COVID group had 7605 (56.0%) cases, and pre-COVID group 5974 (44.0%). The COVID group had significantly greater average weight and body mass index (BMI) than pre-COVID group (P < 0.001). Increased BMI was associated with increased case acuity and complication rates. Minorities including African Americans and Native American/Pacific Islanders had an increase in number of cholecystectomies performed during COVID. Undergoing a cholecystectomy during COVID was more likely to be classified as urgent or emergent than pre-COVID (P < 0.0001). The COVID group overall had less favorable surgical wound classification as more were classified as class III or class IV cases.

CONCLUSIONS

There were increases in weight/BMI, case severity, and total laparoscopic cholecystectomies performed during COVID-19. A statistically significant difference in average weight may suggest a relationship between isolation during the COVID-19 pandemic and rates of cholecystectomy. Future research is encouraged to identify contributing factors in these trends.

Development of a Preoperative Screening Tool to Reduce Morbidity and Mortality of COVID-19-positive Hepatobiliary Patients

PURPOSE

This study aimed to create a preoperative risk assessment form for COVID-19-positive hepatobiliary patients to guide further prevention of complications after surgery and reduce morbidity and mortality.

DESIGN

Based on the literature, focus groups, and case studies, a multidisciplinary panel of 15 experts conducted three rounds of a Delphi study that resulted in the development of a preoperative risk assessment form to be used by healthcare professionals in the treatment of COVID-19-positive hepatobiliary patients.

METHODS

A preoperative risk assessment form for health professionals to use among COVID-19-positive hepatobiliary patients was developed based on literature, focus groups, and case studies. A 3-round Delphi study was conducted to validate and revise the risk assessment form using a multidisciplinary panel of 15 experts involved in hepatobiliary surgery.

FINDINGS

The experts demonstrated high cooperation and familiarity with the research topic, with positive coefficients ranging from 93.33% to 100% and authority coefficients ranging from 0.83 to 0.86. The coordination coefficients were 0.33, 0.26, and 0.22, respectively, indicating good coordination among expert opinions. The final risk assessment form included 9 primary (first-level) indicators, 38 secondary (second-level) indicators, and 122 tertiary (third-level) indicators.

CONCLUSIONS

The preoperative risk assessment form for hepatobiliary surgery patients infected with COVID-19 is scientifically rigorous, reliable, and valid. This screening tool may be used by health providers to identify high-risk patients, prevent postoperative complications, and reduce morbidity and mortality.

Prediction and management of small-for-size syndrome in living donor liver transplantation

Small-for-size syndrome (SFSS) remains a critical challenge in living donor liver transplantation (LDLT), characterized by graft insufficiency due to inadequate liver volume, leading to significant postoperative morbidity and mortality. As the global adoption of LDLT increases, the ability to predict and manage SFSS has become paramount in optimizing recipient outcomes. This review provides a comprehensive examination of the pathophysiology, risk factors, and strategies for managing SFSS across the pre-, intra-, and postoperative phases. The pathophysiology of SFSS has evolved from being solely volume-based to incorporating portal hemodynamics, now recognized as small-for-flow syndrome. Key risk factors include donor-related parameters like age and graft volume, recipient-related factors such as MELD score and portal hypertension, and intraoperative factors related to venous outflow and portal inflow modulation. Current strategies to mitigate SFSS include careful graft selection based on graft-to-recipient weight ratio and liver volumetry, surgical techniques to optimize portal hemodynamics, and novel interventions such as splenic artery ligation and hemiportocaval shunts. Pharmacological agents like somatostatin and terlipressin have also shown promise in modulating portal pressure. Advances in 3D imaging and artificial intelligence-based volumetry further aid in preoperative planning. This review emphasizes the importance of a multifaceted approach to prevent and manage SFSS, advocating for standardized definitions and grading systems. Through an integrated approach to surgical techniques, hemodynamic monitoring, and perioperative management, significant strides can be made in improving the outcomes of LDLT recipients. Further research is necessary to refine these strategies and expand the application of LDLT, especially in challenging cases involving small-for-size grafts.

Multicentre analysis of severe perioperative adverse events in children undergoing surgery who were infected with SARS-CoV-2: a propensity score-adjusted analysis

BACKGROUND

The incidence of severe adverse events in children with SARS-CoV-2 undergoing anaesthesia has not been well established. We examined the relationship between SARS-CoV-2 infection and severe perioperative adverse events in children.

METHODS

This multicentre (21 North American institutions), retrospective cohort study included children <18 years old, with American Society of Anesthesiologists physical status (ASA PS) of 1-4 and non-severe SARS-CoV-2, who underwent general anaesthesia between April 1, 2020, and March 31, 2021. The primary outcome was the incidence of severe perioperative adverse events (admission to the intensive care unit for escalation of respiratory support, acute respiratory distress syndrome, postoperative pneumonia, cardiovascular arrest, extracorporeal life support, and death) within 7 days of the anaesthetic, assessed using multivariable analysis with inverse probability of treatment weighting by the propensity score. A propensity score mixed-effects model included variables selected a priori. Inverse probability of treatment weighting was used to retain all data while balancing exposure groups on measured confounders.

RESULTS

We matched 1138 patients with SARS-CoV-2 positive testing within 10 days of the anaesthetic to 3396 non-infected controls. The cohort included 56.6% (2568/4534) male patients, 69.9% (2839/4060) White patients, and 63.5% (2879/4533) ASA PS 1-2 patients. General surgery cases comprised 38.4% (1739/4534) of the cohort, followed by orthopaedic surgery at 12.6% (573/4534) and ear, nose, and throat surgery at 8.2% (371/4534). In the overall sample of 4534 patients, 52 had a severe adverse event (0.01%). Children with SARS-CoV-2 had a higher risk of at least one severe adverse event (25/1138 [2.20%] vs 27/3396 [0.80%] in those non-infected; adjusted odds ratio 2.34; 95% confidence interval 1.25-4.39). None of the children with SARS-CoV-2 had a cardiac arrest, required extracorporeal life support, or died.

CONCLUSIONS

In the largest cohort to date of paediatric patients undergoing general anaesthesia, SARS-CoV-2 infection was associated with severe perioperative adverse events, but no children in the infected cohort died.

Provision of inguinal hernia surgery in first-referral hospitals across low- and middle-income countries: Secondary analysis of an international cohort study

INTRODUCTION

Surgical care in first-referral hospitals (FRHs) in low- and middle-income countries (LMICs) is poorly characterized. Inguinal hernia repair can act as a good tracer condition. This study aimed to evaluate the variation in hernia repair across different hospital types in LMICs.

METHODS

We conducted a secondary analysis of an international prospective cohort study of hernia surgery. Data was collected from consecutive patients undergoing primary inguinal hernia repair between 30 January and May 21, 2023. We characterized patients from LMICs, comparing first-referral, secondary, and tertiary hospitals. Emergency surgery, financing methods, mesh use, and complications were defined as key performance measures relevant for FRHs. A multilevel logistic regression model was used to test associations between complications and hospital type.

RESULTS

This analysis included 8155 patients undergoing hernia repair across 328 hospitals in 55 LMICs. Most patients were male (89.8%, 7324/8155), of working age (mean age 41.6, SD 25.3). Emergency surgery rates were similar across first-referral, secondary and tertiary hospitals (11.1%, 10.9%, and 9.6%, respectively). Patients in FRHs were most likely to experience out-of-pocket payments (31.4%, 9.4%, and 17.4%). They also had lower rates of mesh use (71.9%, 82.1%, and 84.1%) and higher postoperative complication rates (19.1%, 12.5%, and 14.0%), although complications were similar after adjustment (adjusted odds ratio 1.71, 95% CI 0.83-3.54, p = 0.148).

DISCUSSION

This sample of FRHs is capable of delivering simple elective surgery, reducing the burden on subsequent referral hospitals. To scale these surgical pathways, FRHs need support to increase the use of mesh and ensure cost protection for patients.

Peculiarities of in-Stent Thrombosis and Restenosis in Coronary Arteries Post-COVID-19: A Systematic Review of Clinical Cases and Case Series

Background

One of the most serious complications of coronary artery stenting is restenosis and in-stent thrombosis; their prevalence can reach 20-25%. Stent thrombosis can be acute (up to 24 hours), subacute (24 hours to 30 days), late (30 days to 1 year), and very late (> 1 year after previous stenting). In the patients with COVID-19 in intensive care units, the proportion of those with elevated troponin levels reached 25%.

Objective

Evaluation of the association between COVID-19 and the development of in-stent thrombosis and restenosis of the coronary arteries based on the analysis of clinical cases and case series.

Materials and Methods

We searched the PubMed and Scopus databases for relevant case reports and case series of stent restenosis and in-stent thrombosis associated with coronavirus infection (CVI) published between 2020 and the present. Thirty-eight full-text publications were screened and manually checked for analysis. We found 10 publications describing cases of thrombosis and restenosis of stents associated with coronavirus infection, of which only 2 were case series. In total, we analyzed 22 cases.

Results

In the structure of in-stent restenosis and thrombosis, 59.1% were very late, 9.1% were late; 18.2% were considered subacute events, and 13.6% were acute events. All cases were angiographically confirmed. The main location of restenosis or thrombosis was the left coronary artery (LAD) (51.1%), thrombosis of the right coronary artery (RCA) occurred in 27.3%, and location in circumflex artery was in 22.7%. All patients had COVID-19 confirmed by a PCR test or the presence of immunoglobulins G and M. In fourteen patients (54.5%), an X-ray examination showed the presence of bilateral polysegmental infiltration.

Conclusion

Analysis of publications demonstrates the association between restenosis and in-stent thrombosis in patients with coronary arteries disease (CAD) and coronavirus infection.

Unlocking the Potential of RNA Sequencing in COVID-19: Toward Accurate Diagnosis and Personalized Medicine

COVID-19 has caused widespread morbidity and mortality, with its effects extending to multiple organ systems. Despite known risk factors for severe disease, including advanced age and underlying comorbidities, patient outcomes can vary significantly. This variability complicates efforts to predict disease progression and tailor treatment strategies. While diagnostic and therapeutic approaches are still under debate, RNA sequencing (RNAseq) has emerged as a promising tool to provide deeper insights into the pathophysiology of COVID-19 and guide personalized treatment. A comprehensive literature review was conducted using PubMed, Scopus, Web of Science, and Google Scholar. We employed Medical Subject Headings (MeSH) terms and relevant keywords to identify studies that explored the role of RNAseq in COVID-19 diagnostics, prognostics, and therapeutics. RNAseq has proven instrumental in identifying molecular biomarkers associated with disease severity in patients with COVID-19. It allows for the differentiation between asymptomatic and symptomatic individuals and sheds light on the immune response mechanisms that contribute to disease progression. In critically ill patients, RNAseq has been crucial for identifying key genes that may predict patient outcomes, guiding therapeutic decisions, and assessing the long-term effects of the virus. Additionally, RNAseq has helped in understanding the persistence of viral RNA after recovery, offering new insights into the management of post-acute sequelae, including long COVID. RNA sequencing significantly improves COVID-19 management, particularly for critically ill patients, by enhancing diagnostic accuracy, personalizing treatment, and predicting therapeutic responses. It refines patient stratification, improving outcomes, and holds promise for targeted interventions in both acute and long COVID.

Evaluation of neutralizing antibody titers against SARS-CoV-2 JN.1 omicron subvariant during pregnancy - A case series study

Background

SARS-CoV-2 infection during pregnancy poses health risks to both mother and fetus. This study investigates neutralizing antibodies (NAbs) against the SARS-CoV-2 JN.1 Omicron subvariant in pregnant women, focusing on responses to natural infection, vaccination, and passive immunity.

Methods

A single-center, prospective study collected blood samples from 19 pregnant women at various pregnancy stages and postpartum. NAb titers were analyzed using a pseudovirus neutralization assay, with statistical analyses (p-value <0.05) conducted using unpaired t-test with Welch's correction.

Results

Among participants, 63.2 % had at least one positive NAb titer, with only one vaccinated case. No significant difference in NAb titers was found between symptomatic and asymptomatic women. NAbs were detected in cord blood, especially when infection or vaccination occurred close to delivery, indicating passive immunity transfer to the newborn.

Conclusion

NAb titers change dynamically during pregnancy, increasing then decreasing. Most pregnant women were asymptomatic and NAbs were effectively transferred to the fetus when infection or vaccination occurred near delivery. These findings highlight the importance of vaccination timing, suggesting late second or third trimester vaccination may provide better protection, emphasizing the need for adherence to vaccination guidelines to optimize maternal and neonatal immunity.

Endoscopic transpapillary gallbladder drainage is associated with favorable long-term outcomes in patients with advanced liver disease

Background and study aims Endoscopic gallbladder therapy is increasingly used in high-risk surgical patients, but data in advanced liver disease are lacking. Patients and methods We performed a single-center retrospective analysis of patients with cirrhosis undergoing endoscopic transpapillary gallbladder drainage (ET-GBD) with cystic duct stenting (n = 55). Short-term outcomes were assessed at Day 30. Long-term outcomes were assessed at 6 months and 1 and 3 years or last known follow-up. Subgroup analyses were completed by location (inpatient vs. outpatient). Results A total of 52 patients, mean MELD-Na 16, underwent successful ET-GBD (38 inpatient, 14 outpatient). Most patients (n = 48) experienced immediate symptomatic relief. Short-term adverse event rate was 7.7% and 30-day mortality was 1.9%. At 6 months, 86.5% of patients had a favorable outcome; unfavorable outcomes included death (n = 2), recurrent cholecystitis and/or need for urgent cholecystectomy (n = 5). At the end of the study, 80% of patients experienced a favorable outcome including five patients bridged to liver transplant and 20 who had their stent in place with adequate symptom control. Of those with imaging, 65% of patients experienced resolution of cholelithiasis. Recurrent cholecystitis ( P = 1.00) and stone resolution ( P = 0.35) did not differ in patients with one or two cystic duct stents in place. Conclusions Transpapillary gallbladder stenting is technically feasible and associated with high rates of clinical success in patients with decompensated liver disease. Stone resolution is common after transpapillary gallbladder stenting and may portend favorable patient outcomes.

Perioperative outcomes in patients with symptomatic versus asymptomatic previous COVID-19 infection undergoing neurosurgical treatment (post-COVID-19 study)

Background and Aims

The long-term effects of coronavirus disease 2019 (COVID-19) infection (long-COVID) are being increasingly recognized. The long-COVID effects are more likely in individuals who were symptomatic than asymptomatic during their previous COVID-19 infection. The data on perioperative outcomes of patients undergoing elective neurosurgery long after their recovery from COVID-19 infection is lacking. The primary objective of this study was to compare the perioperative outcomes after elective neurosurgery between patients who were symptomatic and those who were asymptomatic during their previous COVID-19 infection. The secondary objectives were to compare the earlier COVID-19 characteristics and the perioperative pulmonary profile during current surgery between these groups.

Material and Methods

This prospective observational study was performed in adult patients undergoing elective neurosurgery with history of previous COVID-19 infection. Data was collected regarding previous COVID-19 infection (symptoms, hospitalization, treatment, complications, etc.) and current perioperative characteristics (pulmonary profile, perioperative complications, hospital stay, mortality, etc.).

Results

A total of 50 patients were recruited during the study period, of which 35 (73%) patients were symptomatic during previous COVID-19 infection (two patients were excluded). The mean duration between current surgery and previous COVID-19 infection was 7 months. Patients symptomatic during earlier COVID-19 infection were females, older, and had a lower oxygen level during current surgery. There was no difference between symptomatic and asymptomatic groups in adverse perioperative outcomes such as desaturation, pulmonary or extrapulmonary complications, or non-extubation.

Conclusion

The perioperative outcomes of patients undergoing elective neurosurgery with previous mild to moderate symptomatic COVID-19 infection may not be different from those of patients with asymptomatic COVID-19 infection.

Outcomes of Patients Undergoing Elective Cancer Surgery After SARS-CoV-2 Infection: An Observational Cohort Study

BACKGROUND

We evaluated the impact of preoperative SARS-CoV-2 infections on postoperative outcomes among patients undergoing elective cancer surgery.

METHODS

This ambidirectional (retrospective and prospective) study was conducted among patients undergoing elective cancer surgery between December 2022 and March 2023. Patients with different time intervals between SARS-CoV-2 infection and surgery (0-6 weeks and ≥7 weeks) were compared with those without SARS-CoV-2 infection. The primary outcome was 30-day postoperative pulmonary complications (PPCs). Secondary outcomes included 30-day postoperative mortality, major adverse cardiovascular events (MACE), and other postoperative adverse outcomes.

RESULTS

Of the 830 patients analyzed, 239 (28.8%) had SARS-CoV-2 infection 0-6 weeks before cancer surgery, and they had a higher incidence of PPCs (4.6% in no SARS-CoV-2 infection, 12.1% in 0-6 weeks, and 5.1% in ≥7 weeks, p = 0.001). The logistic regression model revealed that, compared with patients without SARS-CoV-2 infection, surgery performed 0-6 weeks after SARSCoV-2 infection was associated with a higher risk of PPCs (adjusted odds ratio [aOR] 2.83; 95% confidence interval [CI] 1.34-5.98), and surgery performed ≥7 weeks after SARSCoV-2 infection was associated with a similar risk of PPCs (aOR 1.19; 95% CI 0.54-2.64). However, preoperative SARS-CoV-2 infection was not associated with a risk of 30-day postoperative mortality, MACE, or other adverse postoperative outcomes.

CONCLUSIONS

In patients with preoperative Omicron variant infection, nonemergency cancer surgery can be scheduled ≥7 weeks after the infection to decrease the risk of PPCs, but it can be advanced if the risk of delay exceeds the risk of proceeding with the surgery.

Effects of immediate extubation in the operating room on long-term outcomes in living donor liver transplantation: a retrospective cohort study

BACKGROUND

Living-donor liver transplantation (LDLT) is a viable alternative to deceased-donor liver transplantation. Enhanced recovery after surgery protocols that include early extubation offer short-term benefits; however, the effect of immediate extubation in the operating room (OR) on long-term outcomes in patients undergoing LDLT remains unknown. We hypothesized that immediate OR extubation is associated with improved long-term outcomes in patients undergoing LDLT.

METHODS

This retrospective cohort study included 205 patients who underwent LDLT. The patients were classified based on the extubation location as OREX (those extubated in the OR) or NOREX (those extubated in the intensive care unit [ICU]). The primary outcome was overall survival (OS), while secondary outcomes included ICU stay, hospital stay duration, and various postoperative outcomes.

RESULTS

Among the 205 patients, 98 (47.8%) underwent extubation in the OR after LDLT. Univariate analysis revealed that OR extubation did not significantly affect OS (hazard ratio [HR]: 0.50, 95% confidence interval [CI]: 0.24-1.05; P = 0.066). Furthermore, multivariate analysis revealed no statistically significant association between OR extubation and OS (HR: 0.79, 95% CI: 0.35-1.80; P = 0.580). However, OR extubation was significantly associated with a lower incidence of 30-day composite complications and shorter ICU and hospital stays. Multivariate analysis indicated that higher preoperative platelet counts, increased serum creatinine levels, and a longer surgery duration were associated with poorer OS.

CONCLUSIONS

Immediate OR extubation following LDLT surgery was associated with fewer 30-day composite complications and shorter ICU and hospital stays; however, it did not significantly improve OS compared with ICU extubation.

Impact of previous COVID-19 infection on postoperative complications and functional recovery: a 1-year follow-up ambispective cohort study

BACKGROUND

It's necessary to reassess the patients' short-term and long-term postoperative outcomes in the post-COVID-19 era. This study aims to provide more comprehensive evidence regarding the timing of surgery after COVID-19 infection among the vaccinated population upon Omicron variant, considering the duration after acute COVID-19 infection, the severity of COVID-19, patients' comorbidities, and the full course quality of postoperative recovery.

MATERIALS AND METHODS

This is a single-center cohort study. Patients diagnosed with preoperative COVID-19 infection were consecutively included before surgery. Patients' demographics, surgical characteristics, and COVID-19-related factors were documented. Exposure was the time interval from COVID-19 infection to surgery. The primary outcome was postoperative complications within 30 days. The secondary outcomes included postoperative mortality within 30 days, functional disability at 6 and 12 months after surgery.

RESULTS

A total of 4953 patients were included, and postoperative complications occurred in 353 patients (7.1%) within 30 days after surgery. Time interval from COVID-19 infection to surgery was associated with postoperative complications within 30 days after surgery [adjusted odds ratio (aOR) per day: 0.99; 95% CI, 0.99-1.00; P <0.01], as well as postoperative 6- and 12-month functional disability [(aOR): 1.00; 95% CI, 0.99-1.00; P <0.01; and (aOR) 0.99; 95% CI, 0.98-1.00; P =0.01, respectively). Delaying surgery beyond a time interval of 2 weeks was associated with reduced postoperative 30-day complications [(aOR): 0.63; 95% CI, 0.43-0.91; P =0.01] and mortality [(aOR): 0.07; 95% CI, 0.01-0.38; P <0.01]. Meanwhile, delaying surgery beyond a time interval of 7 weeks was associated with reduced functional disability at both 6-month [(aOR): 0.67; 95% CI, 0.58-0.79; P <0.01] and 12-month postoperatively [(aOR): 0.71; 95% CI, 0.53-0.95; P =0.02].

CONCLUSION

A 2 weeks delay after COVID-19 infection is necessary for decreasing short-term postoperative risks, and a longer waiting period could be beneficial for long-term functional recovery.

Thoracobiliary Fistula Complications Following Concomitant Diaphragm and Liver Injury

INTRODUCTION

Thoracobiliary fistula (TBF) is a rare and highly morbid complication of hepatic trauma. There is a paucity of literature regarding incidence, disease course, and treatment. This study identifies etiologic factors and outcome patterns in patients at risk for TBF.

METHODS

A retrospective review of patients presenting with concern for trans-diaphragmatic bile leak over an 8-y period was performed at an urban level 1 trauma center. Early postinjury deaths were excluded. Records were reviewed for presence of a delayed bile leak. Patient characteristics with concern for (No-TBF) and confirmed fistula (TBF) were compared using Fisher's exact and Mann-Whitney U-tests. The disease courses of patients with TBF were further examined.

RESULTS

Over the study period, 118 patients with concomitant right diaphragm and liver injury were reviewed, of these 114 patients (96.6%) survived longer than 72 h. Four patients developed TBF (3.5%). Patients with TBF were younger (P = 0.01) and had trends toward less frequent liver repair (P = 0.061) or concomitant liver and diaphragm repair (P = 0.061). Video-assisted thoracoscopic surgery for retained hemothorax was associated with increased risk of TBF (P = 0.005). Patients with TBF were significantly more likely to develop infectious complications such as sepsis, pneumonia, or complicated parapneumonic effusion (P < 0.001). Treatment of TBF included endoscopic retrograde cholangiopancreatography, sphincterotomy, and stent placement.

CONCLUSIONS

Although TBF incidence is low, patients with concomitant right hemidiaphragm and liver trauma may be at higher risk for developing TBF without prompt and definitive operative intervention. This injury is characterized by infectious complications requiring further interventional treatment and monitoring.

Age and clinical spectrum of COVID-19 are associated with safety of transarterial chemoembolization in hepatocellular carcinoma: a retrospective cohort study

Background

Hepatocellular carcinoma (HCC) patients with coronavirus disease 2019 (COVID-19) undergoing open surgery show increased adverse events (AEs) and mortality, while the safety of transarterial chemoembolization (TACE) in coinfected patients remains understudied, limiting available evidence. This study aims to investigate the safety of TACE in HCC patients coinfected with COVID-19, and to explore the potential risk factors affecting the occurrence of serious AEs (SAEs), thus providing evidence for clinical treatment strategies in such patients.

Methods

This retrospective study involved HCC patients who underwent TACE with or without COVID-19 infection at our institution from November 2022 to February 2023. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used for the diagnosis of COVID-19. Patients were divided into an infected group (diagnosed with COVID-19 within 2 weeks before or after the procedure) and an uninfected group (tested negative for COVID-19). SAEs were ascertained according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0. Logistic regression analysis of multiple clinical factors in preoperative baseline characteristics was performed to identify risk factors that might predict the occurrence of SAEs.

Results

A total of 118 patients (73 in the infected group, 45 in the uninfected group) were included, of whom 83.9% were male (86.3% in the infected group vs. 80.0% in the uninfected group) and the median age was 55.9±12.4 years (56.8±12.3 vs. 54.5±12.7 years). The clinical spectrum of COVID-19 in the infected group were 80.8% mild, 13.7% moderate, 1.4% severe and 4.1% critical. Sixteen of the 118 patients experienced SAEs (19.2% vs. 4.4%, P=0.046). The predominant SAEs were respiratory system diseases (9.6% vs. 0.0%) and liver damage (2.7% vs. 2.2%). In the univariate analysis, infection status [odds ratio (OR): 5.102, P=0.04, 95% confidence interval (CI): 1.102-23.627], gender (OR: 2.857, P=0.09, 95% CI: 0.862-9.468), age (OR: 1.061, P=0.03, 95% CI: 1.007-1.118) and clinical spectrum of COVID-19 (OR: 4.259, P<0.001, 1.943-9.336) were considered as the potential risk factors of grade ≥3 AEs. In multivariate analysis, younger age (OR: 1.064, P=0.044, 95% CI: 1.002-1.131) and a milder clinical spectrum of COVID-19 (OR: 5.736, P=0.004, 95% CI: 1.772-18.568) were independent factors associated with a lower occurrence of SAEs.

Conclusions

TACE in HCC patients co-infected with COVID-19 was considered relatively safe. Age and clinical spectrum of COVID-19 were associated with SAEs in HCC patients treated with TACE.

Association Between Reconstruction Technique and Clinical Outcomes in Advanced Gastric Cancer Patients Undergoing Proximal Gastrectomy

BACKGROUND

There is an upward shift in the incidence and localization of gastric cancer (GC). Proximal gastrectomy (PG) has been advocated as an alternative operation for upper-third GC. An uneventful postoperative course is currently measured using a well-defined textbook outcome (TO), which represents a composite of surgical quality metrics. The aim of this study was to compare TO after two reconstruction methods following PG: double-tract reconstruction (DTR) and posterior esophagogastrostomy with partial neo-fundoplication (EGF).

MATERIALS AND METHODS

Primary proximal gastric adenocarcinoma patients who had undergone PG with DTR or EGF were included in this study. In a prospectively collected database, DTR and EGF were identified in 30 and 30 patients, respectively.

RESULTS

Patients with DTR had a 5.5-fold higher chance of achieving TO compared to those with EGF (OR = 5.67; p = 0.0266). No statistically significant differences in overall survival were noted when both reconstruction methods were compared.

CONCLUSION

In patients with proximal GC undergoing PG, TO is more likely to be achieved using DTR compared to EGF, with similar overall survival. Randomized controlled trials are warranted to indicate the preferred reconstruction technique after PG.

Assessing the continuum of care in Sub-Saharan African hospitals performing surgery for breast cancer: a secondary analysis of the GlobalSurg 3 study

BACKGROUND

While breast cancer incidence rates in Sub-Saharan Africa (SSA) are among the lowest worldwide, mortality rates remain among the highest, reflecting particularly poor survival. Only a few studies in SSA have investigated the capabilities of treatment services to adequately provide a continuum of care for breast cancer. Our aim was to assess the availability of diagnostic facilities and adjuvant therapies in hospitals performing breast cancer surgery in SSA.

METHODS

We performed a secondary analysis of the GlobalSurg3 study data collected in the SSA region. The GlobalSurg 3 study is a multicenter, international, prospective, observational study of hospitals providing surgical services for cancer patients (including breast cancer) around the world. A total of 47 hospitals from 15 SSA countries and 43 cities were included between April 1, 2018, and Jan 31, 2019.

RESULTS

One-third of hospitals covered a population greater than two million (n = 17; 36.2%). Ultrasound was available in all hospitals; however, it was not consistently functional in 11 hospitals (23.4%). Only half of the included hospitals (n = 26, 55.3%) had access to a full-time pathologist, whilst the multidisciplinary team (MDT) approach was absent in 42.4% of hospitals. Radiotherapy equipment was only available in nine hospitals (19.1%). Only half of the hospitals (n = 25, 53.1%) had chemotherapy drugs available on site. In nine hospitals (19.1%), patients had to travel more than 50 km to access chemotherapy drugs.

CONCLUSIONS

Outcomes for breast cancer patients in SSA cannot be improved without significant investments in pathology, surgical and oncological treatment pathways to provide timely diagnostic and effective treatment.

Timing of surgery for spinal deformity patients during the COVID‑19 pandemic: experience from a prospective cohort at Peking Union Medical College Hospital

BACKGROUND

The purpose of this study was to explore the optimal timing and associated risks of spinal deformity surgery during the COVID‑19 pandemic.

METHODS

All consecutive surgical cases for spinal deformity between November 2022 and April 2023 were included. The population was divided into several categories according to the time from diagnosis of SARS-CoV-2 infection to the day of surgery: without infection (pre-COVID-19), infection at 0 to 4 weeks (peri-COVID-19), infection at 4 to 8 weeks (early post-COVID-19), and infection over 8 weeks (late post-COVID-19). The primary outcome and secondary outcomes were 90-day complication rate and total hospital stay. Postoperative complications and total hospital stay were analyzed using logistic regression and linear regression models, and we simultaneously showed the results from the crude model, minimally adjusted model and fully adjusted model. In addition, we performed various sensitivity analyses.

RESULTS

A total of 60 consecutive patients were enrolled. The overall complication rate at 90 days postoperatively was 41.6% (25 of 60 patients), and the total hospital stay for all patients was (10.1 ± 3.5) days. In the fully adjusted model, compared with pre-COVID-19 patients, peri-COVID-19 patients had a 5.1-fold increased risk of postoperative complications (OR = 6.1, 95% CI 1.1-31.9, P = 0.030), early post-COVID-19 patients and late post-COVID-19 patients were at essentially equal risk. In terms of total hospital stay, compared with patients not infected with SARS-CoV-2, peri-COVID-19 patients had a 3.1-day longer hospital stay (ꞵ = 3.1, 95%CI 0.3-5.8, P = 0.032), early post-COVID-19 patients also had a 3.1-day longer hospital stay (ꞵ = 3.1, 95%CI 0.3-6.0, P = 0.032), and late post-COVID-19 patients had the similar hospital stay (ꞵ = -0.4, 95%CI -2.9-2.1, P = 0.741). Sensitivity analysis showed that the conclusions were robust.

CONCLUSIONS

With careful preoperative screening of patients for COVID-19, spinal deformity surgery can proceed safely during the epidemic. We recommend that spinal deformity surgery be delayed in patients with COVID-19 until 8 weeks after SARS-CoV-2 infection.

Impact of COVID-19 on the time to counseling and treatment of prostate cancer

PURPOSE

This study investigates how the COVID-19 pandemic (CP) impacted the timeline between initial diagnosis (ID) of prostate carcinoma and subsequent therapy consultation (TC) or radical prostatectomy (RP) due to the implementation of a "minimal contact concept," which postponed clinical examinations until the day of admission.

METHODS

We analyzed patient data from a tertiary care center from 2018 to September 2021. The focus was on comparing the time intervals from ID to TC and from ID to RP before and during the CP.

RESULTS

Of 12,255 patients, 6,073 (61.6%) were treated before and 3,791 (38.4%) during the CP. The median time from ID to TC reduced from 37 days (IQR: 21 - 58d) pre-CP to 32 days (IQR: 20 - 50d) during CP (p < 0.001). Similarly, the time from ID to RP decreased from 98 days (IQR: 70 - 141d) to 75 days (IQR: 55 - 108d; p < 0.001) during the CP. There was a significant decrease in low-risk tumor cases at ID (18.9% vs. 21.4%; p = 0.003) and post-RP (4% vs. 6.7%; p < 0.001) during the CP.

CONCLUSION

Our findings suggest that the COVID-19 pandemic facilitated more timely treatment of prostate cancer, suggesting potential benefits for both low-risk and aggressive tumor management through expedited clinical procedures.

Pulmonary complications and mortality among COVID-19 patients undergoing a surgery: a multicentre cohort study

OBJECTIVES

Our primary objective was to assess the association between symptoms at the time of surgery and postoperative pulmonary complications and mortality in patients with COVID-19. Our secondary objective was to compare postoperative outcomes between patients who had recovered from COVID-19 and asymptomatic patients and explore the effect of the time elapsed between infection and surgery in the former. Our hypotheses were that symptomatic patients had a higher risk of pulmonary complications, whereas patients who had recovered from the infection would exhibit outcomes similar to those of asymptomatic patients.

BACKGROUND

Managing COVID-19-positive patients requiring surgery is complex due to perceived heightened perioperative risks. However, Canadian data in this context remains scarce.

DESIGN

To address this gap, we conducted a multicentre observational cohort study.

SETTING

Across seven hospitals in the province of Québec, the Canadian province was most affected during the initial waves of the pandemic.

PARTICIPANTS

We included adult surgical patients with either active COVID-19 at the time of surgery or those who had recovered from the disease, from March 22, 2020 to April 30, 2021.

OUTCOMES

We evaluated the association between symptoms or recovery time and postoperative pulmonary complications and hospital mortality using multivariable logistic regression and Cox models. The primary outcome was a composite of any postoperative pulmonary complication (atelectasis, pneumonia, acute respiratory distress syndrome and pneumothorax). Our secondary outcome was hospital mortality, assessed from the date of surgery up to hospital discharge.

RESULTS

We included 105 patients with an active infection (47 were symptomatic and 58 were asymptomatic) at the time of surgery and 206 who had recovered from COVID-19 prior to surgery in seven hospitals. Among patients with an active infection, those who were symptomatic had a higher risk of pulmonary complications (OR 3.19, 95% CI 1.12 to 9.68, p=0.03) and hospital mortality (HR 3.67, 95% CI 1.19 to 11.32, p=0.02). We did not observe any significant effect of the duration of recovery prior to surgery on patients who had recovered from their infection. Their postoperative outcomes were also similar to those observed in asymptomatic patients.

INTERPRETATION

Symptomatic status should be considered in the decision to proceed with surgery in COVID-19-positive patients. Our results may help optimise surgical care in this patient population.

STUDY REGISTRATION

ClinicalTrials.gov Identifier: NCT04458337 registration date: 7 July 2020.

Building resilient surgical systems that can withstand external shocks

When surgical systems fail, there is the major collateral impact on patients, society and economies. While short-term impact on patient outcomes during periods of high system stress is easy to measure, the long-term repercussions of global crises are harder to quantify and require modelling studies with inherent uncertainty. When external stressors such as high-threat infectious disease, forced migration or climate-change-related events occur, there is a resulting surge in healthcare demand. This, directly and indirectly, affects perioperative pathways, increasing pressure on emergency, critical and operative care areas. While different stressors have different effects on healthcare systems, they share the common feature of exposing the weakest areas, at which point care pathways breakdown. Surgery has been identified as a highly vulnerable area for early failure. Despite efforts by the WHO to improve preparedness in the wake of the SARS-CoV-2 pandemic, measurement of healthcare investment and surgical preparedness metrics suggests that surgical care is not yet being prioritised by policy-makers. Investment in the 'response' phase of health system recovery without investment in the 'readiness' phase will not mitigate long-term health effects for patients as new stressors arise. This analysis aims to explore how surgical preparedness can be measured, identify emerging threats and explore their potential impact on surgical services. Finally, it aims to highlight the role of high-quality research in developing resilient surgical systems.

The optimal timing of breast cancer surgery after COVID-19 infection: an observational study

PURPOSE

It is controversial for the optimal time of breast cancer surgery after COVID-19 infection. Purpose was to assess the risk of postoperative complication in breast cancer patients with COVID-19 infection, in order to select optimal surgery timing after COVID-19 infection.

METHODS

Breast cancer patients infected with COVID-19 and performed surgery between December 20th, 2022 to March 20th, 2023 were included in this prospective study (n = 577). Patients performed surgery between May 1, 2019 to October 1, 2019 were listed as control group (n = 329). They had not been infected with COVID-19 before surgery. Patients were grouped by time of surgery relative to COVID-19 infection. Database was evaluated using logistic regression.

RESULTS

Patients infected with COVID-19 had a higher incidence of complications after surgery compared to that not-COVID-19 infection (6.59% vs. 3.04%). Multivariable logistic analysis demonstrated that timing of surgery was associated with complications (OR = 4.253; 95% CI: 0.855-21.153, P = 0.044). Patients performed surgery within 2 weeks after COVID-19 infection had the highest rates of complication (17.65%) when compared with other groups, while the incidence was decreased into 5.51% when surgery 2 weeks or more after COVID-19 infection. With a median follow-up was 10 months, all patients with complications were recovered without serious complications or death, which had no adverse effect on subsequent anti-tumor therapy.

CONCLUSIONS

It needs to be cautious when breast cancer surgery was performed within 2 weeks after COVID-19 infection. Although the incidence of complications in patients undergoing surgery 2 weeks after COVID-19 infection is still slightly high, surgery might be recommended considering urgency of treatment, good prognosis of complications and the lack of influence on subsequent adjuvant therapy.

Incidence of Postoperative Complications among Patients with Active or Resolved COVID-19 Undergoing Elective Abdominal Wall Reconstruction

Background

The incidence of postoperative complications among patients with coronavirus disease 2019 (COVID-19) positivity undergoing elective surgical operations is poorly understood. This study aimed to identify differences in postoperative complications after elective abdominal wall reconstruction (AWR) in patients diagnosed with COVID-19 compared with patients presenting prepandemic.

Methods

A single-institution, retrospective chart review was performed of patients undergoing AWR between January 2017 and September 2022. Patients were stratified by date: pre-COVID-19 (January 2017 to December 2019) and post-COVID-19 (January 2020 to September 2022). Patients confirmed as COVID-19-positive were also identified. Data collected included demographics, clinical characteristics, and complications. Univariate and multivariate analyses were performed.

Results

We included 168 patients. The mean age was 54 years, and the mean body mass index was 33 kg/m2. Seventy-five patients underwent surgery pre-COVID-19 and 93 patients after. Of 93 patients, 16 (17%) had a positive COVID-19 test before surgery or during the perioperative period. These 2 groups were risk-matched. Patients with COVID-19 had no significant increase in postoperative complications. Major complications occurred at 13.3% in the pre-COVID-19 group and 7.5% in the post-COVID-19 group. Patients with COVID-19 were more likely to be younger (48 versus 57; P = 0.049) and more likely to have a shorter length of stay in the hospital (3 versus 5.8; P = 0.038).

Conclusions

In our case series, there was an associated increase in the incidence of overall pulmonary-related complications in the postpandemic group. This study is limited by its small sample size. Further investigation should be carried out on this topic.

New perspectives on tracheal resection for COVID-19-related stenosis: A propensity score matching analysis

OBJECTIVE

The large number of patients with COVID-19 subjected to prolonged invasive mechanical ventilation has been expected to result in a significant increase in tracheal stenosis in the next years. The aim of this study was to evaluate and compare postoperative outcomes of patients who survived COVID-19 critical illness and underwent tracheal resection for postintubation/posttracheostomy tracheal stenosis with those of non-COVID-19 patients.

METHODS

It was single-center, retrospective study. All consecutive patients with post-intubation/posttracheostomy tracheal stenosis who underwent tracheal resection from February 2020 to March 2022 were enrolled. A total of 147 tracheal resections were performed: 24 were in post-COVID-19 patients and 123 were in non-COVID-19 patients. A 1:1 propensity score matching analysis was performed, considering age, gender, body mass index, and length of stenosis. After matching, 2 groups of 24 patients each were identified: a post-COVID-19 group and a non-COVID group.

RESULTS

No mortality after surgery was registered. Posttracheostomy etiology of stenosis resulted more frequently in post-COVID-19 patients (n = 20 in the post-COVID-19 group vs n = 11 in the non-COVID-19 group; P = .03), as well as intensive care unit admissions during the postoperative period (16 vs 9 patients; P = .04). Need for postoperative reintubation for glottic edema and respiratory failure was higher in the post-COVID-19 group (7 vs 2 postoperative reintubation procedures; P = .04). Postoperative dysphonia was observed in 11 (46%) patients in the post-COVID-19 group versus 4 (16%) patients in the non-COVID-19 group (P = .03).

CONCLUSIONS

Tracheal resection continues to be safe and effective in COVID-19-related tracheal stenosis scenarios. Intensive care unit admission rates and postoperative complications seem to be higher in post-COVID-19 patients who underwent tracheal resection compared with non-COVID-19 patients.

Viscoelastic Hemostatic Testing as a Diagnostic Tool for Hypercoagulability in Liver Transplantation: A Narrative Review

Liver transplantation is a complex surgical procedure in which various forms of coagulation dysfunction can occur, including perioperative hypercoagulability. The hemostasis balance in liver graft recipients with end-stage liver disease can shift to thrombosis or haemorrhage, depending on the associated risk factors and clinical conditions. Hypercoagulability can result in serious complications such as thromboembolism, which can affect the vessels of the newly transplanted liver graft. Standard coagulation tests (SCTs), such as prothrombin time and activated partial thromboplastin time (aPTT), have a poor ability to diagnose and monitor an early stage of hypercoagulability. Recent studies demonstrated that viscoelastic hemostatic elastic tests (VETs), such as rotational thromboelastometry (ROTEM) and thromboelastography (TEG), are promising alternative tools for diagnosing hypercoagulability disorders. VETs measure clotting and clot formation time, clot strength (maximum clot firmness), fibrin and platelet contribution to clot firmness, and fibrinolysis, which makes them more sensitive in identifying liver graft recipients at risk for thrombosis as compared with SCTs. However, developing evidence-based guidelines for the prophylaxis and treatment of hypercoagulability based on VET results is still needed.

Optimal surgical timing for lung cancer following SARS-CoV-2 infection: a prospective multicenter cohort study

BACKGROUND

With the ongoing prevalence of the emerging variant and global vaccination efforts, the optimal surgical timing for patients with resectable lung cancer in the Omicron-dominant period requires further investigation.

METHODS

This prospective multicenter study involved patients who underwent radical surgery for lung cancer between January 29, 2023 and March 31, 2023. Patients were categorized into four groups based on the interval between SARS-CoV-2 infection and surgery. The main outcomes evaluated were 30-day mortality and 30-day morbidity.

RESULTS

A total of 2081 patients were enrolled in the study, of which 1837 patients (88.3%) had a confirmed SARS-CoV-2 diagnosis before surgery. Notably, no instances of 30-day mortality were observed in any patient. Patients without prior infection had a 30-day morbidity rate of 15.2%, with postoperative pneumonia occurring in 7.0% of cases. In contrast, patients diagnosed with SARS-CoV-2 before surgery had significantly higher rates of 30-day morbidity and postoperative pneumonia when surgery was performed within 4-5 weeks (adjusted odds ratio (aOR) (95% CI):2.18 (1.29-3.71) and 2.39 (1.21-4.79), respectively) or within 6-7 weeks (aOR (95% CI):2.07 (1.36-3.20) and 2.10 (1.20-3.85), respectively). Conversely, surgeries performed ≥ 8 weeks after SARS-CoV-2 diagnosis exhibited similar risks of 30-day morbidity and pneumonia compared to those in the no prior infection group (aOR (95% CI):1.13 (0.77-1.70) and 1.12 (0.67-1.99), respectively).

CONCLUSIONS

Thoracic surgery for lung cancer conducted 4-7 weeks after SARS-CoV-2 infection is still associated with an increased risk of 30-day morbidity in the Omicron-dominant period. Therefore, surgeons should carefully assess the individual risks and benefits to formulate an optimal surgical strategy for patients with lung cancer with a history of SARS-CoV-2 infection.

Microwave ablation for high-risk pulmonary nodules in patients infected with the Omicron variant of Sars-Cov-2 within 3 months: a retrospective analysis of safety and efficacy

Introduction

To evaluate the safety and efficacy of microwave ablation (MWA) for high-risk pulmonary nodules in patients infected with the Omicron variant within 3 months, a retrospective study was conducted.

Methods

The study included patients with multiple high-risk nodules who underwent CT-guided MWA from April 2022 to April 2023. Patients were divided into an observation group and a control group. The primary endpoints were postoperative complications and hospital length of stay, while the secondary endpoint was progression-free survival (PFS).

Results

A total of 157 patients were included in the analysis, with 64 in the observation group and 93 in the control group. No deaths occurred within 30 days after MWA. In the observation group, the median follow-up time was 7 months, during which 5 patients experienced disease progression after MWA, including 3 cases of pulmonary metastases. Complications were primarily pneumothorax, pleural effusion, and hemorrhage, with an incidence rate of 57.8%, which was statistically significant (p=0.005). The median length of hospital stay was 5 days for the observation group and 6 days for the control group. There was no statistically significant difference in PFS between the two groups after the removal of lung metastases (p=0.265).

Discussion

CT-guided MWA is an alternative treatment for patients with high-risk lung nodules who have been infected with Omicron within the past 3 months.

The Impact of Postoperative COVID-19 Infection on 30-day Outcomes of Laparoscopic Cholecystectomy

Introduction: Preoperative Coronavirus Disease 2019 (COVID-19) infections are associated with postoperative adverse outcomes. However, there is limited data on the impact of postoperative COVID-19 infection on postoperative outcomes of common general surgery procedures.Objective: To evaluate the impact of postoperative COVID-19 diagnosis on laparoscopic cholecystectomy outcomes.Methods: Patients with symptomatic cholelithiasis, acute cholecystitis, or gallstone pancreatitis who underwent laparoscopic cholecystectomy with or without intraoperative cholangiogram were identified using the 2021 National Surgical Quality Improvement Program (NSQIP) database. Patients were categorized into two groups: patients with and without a postoperative COVID-19 diagnosis. Coarsened Exact Matching was used to match the groups based on preoperative risk factors, and outcomes were compared.Results: A total of 47,948 patients were included. In the aggregate cohort, 31% were male, and mean age was 50 years. Age, BMI, smoking, COPD, CHF, preoperative sepsis, and ASA class were significantly different between the two groups. After matching, there were no differences in characteristics. 30-day morbidity (OR = 2.7, 95% CI 1.4-5.1), pneumonia (OR = 5.0, 95% CI 1.7-15.0), DVT (OR = 8.22, 95% CI 1.0-66), reoperation (OR = 9.3, 95% CI 1.2-73.8), and readmission (OR = 4.8, 95% CI 2.3-10.1) continued to be significantly worse in the matched cohort.Conclusion: Postoperative COVID-19 infection was associated with worse outcomes after laparoscopic cholecystectomy. These findings suggest that even postoperative COVID-19 diagnosis increases the risk for adverse outcomes in patients recovering from laparoscopic cholecystectomy and may indicate that precautions should be taken and new COVID-19 infections even after surgery should be closely monitored.

International Society for Heart and Lung Transplantation Guidelines for the Evaluation and Care of Cardiac Transplant Candidates-2024

The "International Society for Heart and Lung Transplantation Guidelines for the Evaluation and Care of Cardiac Transplant Candidates-2024" updates and replaces the "Listing Criteria for Heart Transplantation: International Society for Heart and Lung Transplantation Guidelines for the Care of Cardiac Transplant Candidates-2006" and the "2016 International Society for Heart Lung Transplantation Listing Criteria for Heart Transplantation: A 10-year Update." The document aims to provide tools to help integrate the numerous variables involved in evaluating patients for transplantation, emphasizing updating the collaborative treatment while waiting for a transplant. There have been significant practice-changing developments in the care of heart transplant recipients since the publication of the International Society for Heart and Lung Transplantation (ISHLT) guidelines in 2006 and the 10-year update in 2016. The changes pertain to 3 aspects of heart transplantation: (1) patient selection criteria, (2) care of selected patient populations, and (3) durable mechanical support. To address these issues, 3 task forces were assembled. Each task force was cochaired by a pediatric heart transplant physician with the specific mandate to highlight issues unique to the pediatric heart transplant population and ensure their adequate representation. This guideline was harmonized with other ISHLT guidelines published through November 2023. The 2024 ISHLT guidelines for the evaluation and care of cardiac transplant candidates provide recommendations based on contemporary scientific evidence and patient management flow diagrams. The American College of Cardiology and American Heart Association modular knowledge chunk format has been implemented, allowing guideline information to be grouped into discrete packages (or modules) of information on a disease-specific topic or management issue. Aiming to improve the quality of care for heart transplant candidates, the recommendations present an evidence-based approach.

Preoperative COVID-19 and Postoperative Mortality in Cancer Surgery: A South Korean Nationwide Study

BACKGROUND

We evaluated the impact of preoperative COVID-19 on early postoperative mortality in patients undergoing time-sensitive cancer surgery.

METHODS

This retrospective, nationwide cohort study included adult patients who underwent various cancer (thyroid, breast, stomach, colorectal, hepatobiliary, genitourinary, lung, and multiple cancer) surgeries under general anesthesia in South Korea in 2022. Patients were grouped according to the duration from the date of COVID-19 confirmation to the date of surgery (0-2 weeks, 3-4 weeks, 5-6 weeks, and ≥7 weeks). Patients without preoperative COVID-19 also were included. Multivariable logistic regression analysis with Firth correction was performed to investigate the association between preoperative COVID-19 and 30-day and 90-day postoperative mortality. The covariates encompassed sociodemographic factors, the type of surgery, and vaccination status in addition to the aforementioned groups.

RESULTS

Of the 99,555 patients analyzed, 30,933 (31.1%) were preoperatively diagnosed with COVID-19. Thirty-day mortality was increased in those who underwent surgery within 0-2 weeks after diagnosis of COVID-19 (adjusted odds ratio [OR], 1.47; 95% confidence interval [CI], 1.02-2.12; P = 0.038); beyond 2 weeks, there was no significant increase in mortality. A similar pattern was observed for 90-day mortality. Full vaccination against COVID-19 was associated with reduced 30-day (OR 0.38; 95% CI 0.29-0.50; P < 0.001) and 90-day (OR 0.39; 95% CI 0.33-0.46; P < 0.001) mortality.

CONCLUSIONS

Cancer surgery within 2 weeks of COVID-19 diagnosis was associated with increased early postoperative mortality. These findings support current guidelines that recommend postponing elective surgery for at least 2 weeks after the diagnosis of COVID-19.

Effects of SARS-COV-2 on molecules involved in vascularization and autophagy in placenta tissues

SARS-CoV-2 infection is considered as a multi-organ disease, and several studies highlighted the relevance of the virus infection in the induction of vascular injury and tissue morphological alterations, including placenta. In this study, immunohistochemical analyses were carried out on placenta samples derived from women with COVID-19 infection at delivery (SARS-CoV-2 PCR+) or women healed from a COVID-19 infection (SARS-CoV-2 negative at delivery, SARS-CoV-2 PCR-) or women who gave birth before 2019 (Control). Angiotensin Converting Enzyme 2 (ACE2) receptor, Cluster of differentiation 147 (CD147), endothelial CD34 marker, Vascular Endothelial Growth Factor (VEGF) and total Microtubule-associated protein 1 Light Chain 3B marker (LC3B) were investigated in parallel with SPIKE protein by standard IHC. Multiplexed Immunohistochemical Consecutive Staining on Single Slide (MICSSS) was used to examine antigen co-expression in the same specimen. SPIKE protein was detected in villi and decidua from women with ongoing infection, with no significant differences in SPIKE staining between both biopsy sites. VEGF was significantly increased in SARS-CoV-2 PCR + biopsies compared to control and SARS-CoV-2 PCR- samples, and MICSSS method showed the co-localization of SPIKE with VEGF and CD34. The induction of autophagy, as suggested by the LC3B increase in SARS-CoV-2 PCR + biopsies and the co-expression of LC3B with SPIKE protein, may explain one of the different mechanisms by which placenta may react to infection. These data could provide important information on the impact that SARS-CoV-2 may have on the placenta and mother-to-fetus transmission.