Reduced number of admissions with acute appendicitis but not severe acute appendicitis at two Sydney hospitals during the first COVID-19 lockdown period.

BACKGROUND: This study investigated whether there was a change in acute appendicitis, appendicectomy admissions or disease severity during the 2020 lockdown period in NSW. METHODS: A retrospective before-and-after study was undertaken of patients admitted to two Sydney hospitals (St. Vincent's and Liverpool Hospitals) who had appendicectomy for presumed acute appendicitis and patients who had confirmed appendicitis but did not undergo surgery. Study periods were the 2020 lockdown period (15 March-15 May 2020), the corresponding period in the previous year, and the 1-month after these periods. Patients were classified as having no, mild or severe appendicitis using operation and histopathological reports. RESULTS: (Thirty-six percent) fewer patients were admitted with acute appendicitis during the lockdown period compared with the previous year with a substantial reduction in normal/mild appendicitis presentations (OR 0.56, 95% CI 0.34-0.93, P = 0.03). There were 46% fewer patients with mild appendicitis during lockdown (56) compared with the previous year (103); numbers of patients with severe appendicitis were very similar (46 vs. 51). There was no increase in number of admissions with severe appendicitis, or in the time from onset of symptoms to admission, in the month following lockdown. CONCLUSION: Compared with the previous year, there were markedly fewer admissions with appendicitis during lockdown, with no evidence of a shift to more cases of severe appendicitis nor delayed presentation in the post-lockdown period. It is plausible that some patients with mild appendicitis may have recovered without hospitalization, supporting the importance of implementing trials on non-surgical management of appendicitis.

Effect of Laparoscopic Sleeve Gastrectomy on Fasting Gastrointestinal, Pancreatic, and Adipose-Derived Hormones and on Non-Esterified Fatty Acids.

BACKGROUND: Alterations in gastrointestinal, pancreatic, and adipose hormone levels may have a greater role in weight loss than initially appreciated. The laparoscopic sleeve gastrectomy (LSG) operation is now the most frequently performed bariatric operation in many countries, but there are relatively few data regarding its molecular effects. We sought to characterize the effect of LSG on fasting plasma levels of selected hormones and on non-esterified fatty acids (NEFA), and to compare these to levels in non-obese control individuals. MATERIALS AND METHODS: The levels of nine plasma hormones were measured using a multiplex bead-based assay at baseline and at 3 months after operation in 11 obese patients undergoing LSG. NEFA levels were also measured. The levels were compared to those for 22 age- and sex-matched non-obese individuals. RESULTS: At baseline, obese patients showed significantly higher expression of C-peptide, insulin, and leptin and significantly lower ghrelin, glucose-dependent insulinotropic peptide (GIP), and resistin compared to non-obese controls (p < 0.05). LSG resulted in a reduction in BMI from 42.5 ± 6.47 kg/m2 at operation to 35.2 ± 5.14 kg/m2 at 3 months (42 % mean excess weight loss, p < 0.001). LSG led to a significant decrease in ghrelin, glucagon-like peptide-1 (GLP-1), glucagon, leptin, plasminogen activator inhibitor-1 (PAI-1), and NEFA. CONCLUSION: LSG induces marked early changes in the fasting levels of factors thought to be important regulators of obesity and metabolic health. These changes differ somewhat from the findings for operations with a malabsorptive component, suggesting that subtle differences exist in the mechanisms of weight loss between LSG and other bariatric operations.

Double helix flap to close a massive circular soft-tissue defect.

The closure of a circular defect resulting from excision of large soft-tissue tumours may pose a considerable surgical challenge. We have described a successful result from the use of modified double helix rotation flaps following resection of a fungating 15-cm interscapular basal cell carcinoma. Our technique necessitated a single operation only. Alternatives considered were split skin grafting, Keystone flap repair or a myocutaneous flap. All modes of repair carry the risk of tension with resultant necrosis and infection. In our case, wound infection did occur, largely due to a heavy pre-operative microbiological burden. This was treated with intra- and postoperative antibiotics and there was no need for subsequent debridement. We propose the double helix flaps as an alternate means to successful local closure of large circular soft-tissue defects.