Introduction

Initial reports suggested a high mortality associated with peri-operative COVID-19 infection resulting in delayed surgery and a global change in surgical pathways. The impact of COVID-19 variants and vaccinations on surgical outcomes is yet to be described.

Aims & Methods

We aimed to define the risk of COVID-19 infection in the 30 days following surgery and the associated mortality. With the approval of NHS England we identified all registered adult patients in an OpenSAFELY-TPP primary care general practice within England whilst having an abdominal, obstetric, orthopaedic, thoracic or vascular procedure defined using OPCS codes between 01/02/2020 and 01/03/2022.COVID vaccinations and COVID waves were defined. Crude 30 day risks were calculated using Kaplan Meier curves. A competing risks Cox proportional survival analysis was used to adjust the cumulative risk of COVID-19 infection by the competing risk of death and subsequent non COVID-19 emergency readmissions.
Primary care records managed by the GP software provider TPP were linked to ONS death data, Hospital Episodes Statistics, and Second Generation Surveillance System Public Health England test data through OpenSAFELY. All data were linked, stored and analysed securely within the OpenSAFELY platform: https://opensafely.org/. Data include pseudonymised data such as coded diagnoses, medications and physiological parameters. No free text data are included. All code is shared openly for review and re-use under MIT open license https://github.com/opensafely/PostOpCovid. Detailed pseudonymised patient data is potentially re-identifiable and therefore not shared.
This study was approved by the Health Research Authority [REC reference 21/EE/0278] by the East of England Research Ethics Committee.

Results

We identified 1,213,890 patients within the study period who underwent at least one surgical procedure. Following surgery 11,950 (0.9%) patients developed COVID-19 infection within 30 days. Post-operative COVID infections were greatest in wave 4 with 2.5% of patients having a post-operative infection. Adjusting for all factors post-operative COVID infection risk was 4.9 (aHR 4.88 95% CI 4.65-5.12) fold greater in the fourth wave compared to the first wave.
Within 90 days of surgery there were 820 (0.06%) deaths. A recent COVID infection increased crude morality to 1.42%, and a post-operative COVID infection increased crude mortality to 1.82%. The risk of death reduced following a first and second vaccination (aHR 0.11 95% CI 0.09-0.13). A recent COVID infection (7-42 days prior to admission) increased mortality 4 fold (aHR 3.84 95% CI 3.31-4.45) and a post-operative COVID infection increased mortality 8 fold (aHR 8.49 95% CI 7.6-9.48) compared to those without a COVID-19 infection. This increased 90 day mortality risk was highest in the second wave following a post-operative COVID infection, but then decreased to the non-covid baseline for both emergency and elective procedures in the 3^rd and 4^th waves.

Conclusion

The risk of post-operative COVID infection is low but has increased as strains have been become more transmissible. The absolute risk of death following peri-operative COVID-19 infection is greater than those who have not had infection however this risk has become attenuated during the latter waves of the pandemic.

Acknowledgements: We are very grateful for all the support received from the TPP Technical Operations team throughout this work, and for generous assistance from the information governance and database teams at NHS England and the NHS England Transformation Directorate.

Disclosure

None to declare

Introduction

Capsule endoscopy is the first-line examination for digestive bleeding with likely origin in the small bowel, in hemodynamically stable patients. In the 2022 update, ESGE guidelines recommend that, in the context of overt bleeding, capsule enteroscopy should be performed as soon as possible, ideally within the first 48 hours. In the previous guidelines, published in 2015, the recommended window was 14 days.

Aims & Methods

This study aimed to evaluate the improvement in yield offered by the new recommendations regarding the timing of urgent capsule enteroscopy. Patients with suspected overt middle gastrointestinal bleeding between January 2005 and November 2022 were retrospectively analyzed. Diagnostic and therapeutic yield, rebleeding rate, and mortality were compared when capsule enteroscopy was performed within the first 48 hours, within the first 14 days, or between the 3rd and 14th day after admission.

Results

A total of 138 patients were included (58.7% men, median age 66 years), 87 of whom (63.0%) underwent capsule enteroscopy within the first 48 hours after hospital admission. The median follow-up was 55 months (5-180). The diagnostic yield (presence of blood or lesions with bleeding potential) was slightly higher when capsule enteroscopy was performed within the first 48 hours (81.6% versus 76.5%, p=0.349). On the other hand, capsule enteroscopy within the first 48 hours was significantly associated with higher therapeutic yield (endoscopic, radiologic, or surgical treatment) - 54.0% versus 39.2%, p=0.02. The rebleeding rate was significantly lower in patients undergoing enteroscopy within 48 hours after admission (19.5% versus 29.4%, p=0.04). On the other hand, overall mortality at 36 months did not differ between strategies (21.8% and 25.5%, p=0.401).

Conclusion

Performing capsule endoscopy within the first 48 hours, as recommended by recently published guidelines, is associated with favourable short- and long-term clinical outcomes.

Introduction

Chronic fatigue is a debilitating symptom and has major impacts on the quality of life of patients with chronic inflammatory conditions. In IBD, an estimated 50% of patients suffer from persistent fatigue despite successful treatment of intestinal inflammation. During active disease flares, this number jumps to 80% (Borren et al. 2018). Tryptophan metabolites are not only associated with disease activity in UC and CD, but also with chronic fatigue (Kavyani et al. 2022). Thus, our aims are (1) to characterize the relationship between fatigue and tryptophan derivatives and (2) to understand the metabolic dynamics arising when fatigue symptoms improve following therapeutic intervention.

Aims & Methods

In a prospective open label cohort of patients with moderate-to-severe Crohn’s disease (CD, n = 71) and ulcerative colitis (UC, n = 94) assigned to biologics therapy or JAK inhibitors, fatigue was assessed by the fatigue subscale of the Functional Assessment of the Chronic Illness Therapy – Fatigue (FACIT-F) questionnaire at therapy induction and 2 and 14 weeks thereafter. A FACIT-F score of <30.1 was considered severe fatigue while a score of >40 was considered no relevant fatigue. Clinical response at week 14 was defined as Crohn’s Disease Activity Index (CDAI) <150 and reduction of Partial Mayo Clinical Score (PMCS) >50% vs. baseline, respectively. We used targeted mass spectrometry to quantify the levels of 13 tryptophan derivatives and neopterin in a subset of patient serum in the weeks following therapy induction (at 0, 2, and 14 weeks, n = 120 individuals).

Results

Half of the recruited patients had severe fatigue at baseline (50.3%). Of the 120 patients who reached week 14 and had FACIT-F scores available, severe fatigue was experienced by 45.9% of the patients who did not respond to therapy and the rate was reduced to 13.2% in therapy responders. We found 8 metabolites positively associated with FACIT-F: tryptophan, kynurenic acid, kynurenine, picolinic acid, xanthurenic acid, serotonin, indole-3-proprionic acid, and quinaldic acid, while neopterin was negatively associated (FDR < 0.05). Four of these metabolites changed dynamically as a function of the extent of fatigue improvement: tryptophan, kynurenine, xanthurenic acid, and serotonin (FDR < 0.05). In all cases, the rate of change of these metabolites increased as a function of fatigue improvement.

Conclusion

Fatigue is linked to a diverse array of tryptophan metabolites. Notably, all of the significantly associated tryptophan derivatives were positively associated with FACIT-F, meaning that as fatigue symptoms improve, tryptophan metabolite levels increase. Many of these metabolites have previously been linked to symptom severity in IBD: for example, tryptophan, kynurenic acid and xanthurenic acid all tend to increase with symptom alleviation (Nikolaus et al. 2017, Michaudel et al. 2022). While the kynurenine-to-tryptophan ratio is elevated in active IBD (Nikolaus et al. 2017), this ratio did not convey a specific, fatigue-related signature. Considering that some patients continue to suffer from persistent fatigue even during disease quiescence, further work is needed to disentangle the impact of tryptophan metabolism on therapy response from its role on fatigue improvement.

Disclosure

F. Tran receives scientific funding from Sanofi, received consulting fee's from LEK Consulting and speaker's fees from Lilly, Janssen, Falk, Abbvie, Celltrion, onkowissen.de, CED Service GmbH. S. Schreiber reports consulting fees from Abbvie, Arena, BMS, Biogen, Celltrion, Celgene, IMAB, Gilead, MSD, Mylan, Pfizer, Fresenius, Janssen, Takeda, Theravance, Prevention Bio, Protagonist and Falk.

Introduction

Percutaneous transesophageal gastrotubing (PTEG) was established as an alternative route to access the gastrointestinal tract for the patients that Percutaneous Endoscopic Gastrostomy was contraindicated. PTEG will be an ideal method of tube feeding for the patients without indication of PEG.

Aims & Methods

The aim of this study is to evaluate the clinical usefulness of PTEG for the patients who need tube feeding. A rupture-free balloon (RFB) catheter is inserted into the upper esophagus. Percutaneous balloon puncture with a specialized needle is then performed from the left side of patient’s neck under ultrasonographic control. A guide wire is inserted through the needle into the RFB, followed by a dilator and sheath. A placement tube is then inserted through the sheath, and the sheath is removed. Double Balloons equipped Over tube type RFB were used instead of primary RFB in thirty-five cases that the puncture needle is punctured into the over tube trough the balloon. We perform PTEG in a total of 115 patients (78 men and 37 women, mean age 77.7 years) in whom PEG was not feasible for nutrition. Sixty-one patients had prior gastrectomy , 30 patients had gastric herniation into the thoracic cavity , 6 patients had there stomach located behind the colon , 4 patients had ventriculo-peritoneal shunt tube in front of the stomach and 4 patients had peritoneal carcinoma.

Results

Satisfactory results were achieved in all 115 patients. Median follow-up was 322.0 days. There were no patients who needed a nasogastric tube after PTEG. Seven of 115 patients were able to free from tube feeding due to PTEG tube feeding support. About the complications, there was 1 patient with severe bleeding requiring blood transfusion, one patient had tracheal penetration, which was managed conservatively. Other complications were minor oozing bleeding in seven patients that did not require blood transfusion, subcutaneous emphysema in two patients, which were managed conservatively. Complication rate was 10.4%. No patient required surgical treatment or died after PTEG.

Conclusion

PTEG is feasible, safe, and useful　for long-term nutrition for the patient who is contraindicated to PEG. PTEG may become the only procedure of the liberation from nasogastric tube for the patient who is contraindicated to PEG PTEG is the ideal solution for the patients with PEG contraindicated in the tube feeding.

Disclosure

Nothing to disclose

Introduction

Endoscopic sleeve gastroplasty (ESG) is a safe and effective procedure in class 1 and 2 obese subjects.The effects of menopause on weight are well known. However, given that this patient population is inherently weight-concerned, understanding the effects of ESG on women in menopause is essential to guiding clinicians in counselling this patient population.

Aims & Methods

A prospective dataset collecting data on all ESG procedures performed in a tertiary referral centre was assessed retrospectively. Data on fertility status (menopause and non-menopause women) were collected. A comparison was performed using the Mann-Whitney U test.

Results

Between May 2017 and October 2021, 209 women underwent ESG. Out of the total, fertility status was available for 204 women: 79 menopause (M; 38,7%) and 125 non-menopause women (NM; 61,3%).At baseline, non-menopause women were younger, whereas there were no differences in BMI and weight.
Adherence to follow-up was 92,4%, 87,3% and 80,0% for menopause, 88,8%, 90,4% and 72,9% for non-menopause, at 6,12 and 24 months, respectively.
Six months after the procedure, non-menopause women showed significantly higher TBWL, WL and BAROS score compared to the menopausal group. In contrast, EWL showed no significant difference between the groups.Average TBWL, WL and EWL were not significantly different between the groups at 12 and 24 months (as shown in Table below).
Seven menopausal women needed revision procedures (5 Re-ESG, 1 Surgery), whereas ten non-menopausal women underwent revision (8 Re-ESG, two surgery).

Table. Weight loss trajectories of subjects who underwent Endoscopic Sleeve Gastroplasty, based on menopausal status. Data are reported as median (Interquartile range).

Conclusion

Non-menopausal women who undergo ESG show better outcomes in the short term. However, this advantage does not persist in the medium and long term.

Introduction

Obesity, one of the most common co-morbidities in women of reproductive age, contributes to infertility and obesity-related pregnancy complications. On the other hand, pregnancy is a condition in which, physiologically, the pregnant woman undergoes weight gain. Endoscopic Sleeve Gastroplasty (ESG), an organ-sparing bariatric procedure aimed to reduce gastric volume and modify gastric motility with full-thickness endoscopic sutures, may be used for the treatment of obesity in women of childbearing age.

Aims & Methods

A retrospective analysis of a prospective database was conducted to evaluate weight trajectories, the evolution of obesity-related comorbidities, and lifestyle modification in women who became pregnant after ESG.
A comparison was made between childbearing-age women who became pregnant after ESG and non-pregnant women who reached at least the 6-month follow-up after ESG.

Results

Between January 2018 and December 2021, a total of 150 childbearing-age women underwent ESG at a large Italian tertiary medical center. Out of the total, 18 patients (12,0 %) reported a desire for pregnancy associated with unsuccessful attempts in the 12 months preceding ESG.
Eleven patients (mean age 33,4±6,2 years) became pregnant after the procedure, following a mean time interval of 5,5±3,9 months. The mean preconception BMI was 31,9±4,0 kg/m² (with a mean reduction of 7,24±4,0 kg/m² after ESG). Three patients were affected by hyperinsulinemia (H-INS), while an additional patient had both H-INS and high blood pressure (HBP). Three women reported difficulty in becoming pregnant before the ESG: two were affected by PCOS.
Total body weight loss (TBWL) of at least 5% was achieved before pregnancy in all patients (73% reached a TBWL ≥ 10%).
Six out of eleven (55%) patients had weight gain in the ranges recommended by the Institute of Medicine (IOM) during pregnancy. Among the 18 women with a reported desire for maternity associated with difficult attempts in the previous 12 months, 16,6 % (3/18) managed to start and carry out a pregnancy.
TBWL (%) was 18,08±8,00, 10,35±11,53, and 12,08±8,49, at the beginning of pregnancy, at the delivery, and at the first follow-up (mean interval, 5,18±3,57 months).
No significant differences in WL, TBWL, EWL, BMI, BAROS, and QoL were found between the pregnancy and non-pregnancy groups (99 childbearing-age women) up to 24 months after ESG.

Conclusion

ESG produces adequate weight loss before pregnancy in patients with obesity and is potentially a useful treatment option for women who have difficulty becoming pregnant, such as those with PCOS. Pregnancy after ESG does not adversely affect weight loss outcomes after delivery as lifestyle changes induced by ESG are maintained after pregnancy and allow for a gradual loss of weight gained during pregnancy.