Aims: Primary AIM of the study was to evaluate effect of prolonged hospital stay on Surgical site infections We also evaluated effect of prolonged hospital stay on overall morbidity in Gastrointestinal and Hepatobiliary Surgery as secondary outcome. Methods: We retrospectively analysed all the patients who underwent gastrointestinal and hepatobiliary surgery between April 2017 to March 2020. On our analysis we found mean hospital stay in patient who did not develop SSI and/or morbidity was 4 days (Total hospital stay) vs 6 days who developed morbidity (hospital stay before diagnosis of SSI or diagnosis or morbid event). Based on this to avoid selection bias, we did 1:1 propensity score analysis between patients who had 4 or less than hospital stay vs patients who had 5 or more hospital stay before diagnosis of surgical site infection and/or morbid event. We took all the preoperative and intraoperative factors like Age, sex, malignant disease, ASA score, CDC grade of surgery, open or laparoscopic surgery, HPB surgeries, colorectal surgeries, Upper Gastrointestinal surgeries and small intestinal surgeries as covariates. We used nearest neighbor matching protocol with a calipher of 0.2. Cases were not reusable after matching. Statistical analysis was done using SPSS version 23. Results: We included 348 patients operated between April 2017 and March 2020 in our analysis. After 1:1 propensity score matching 58 patients included in study arm (prevent hospital stay more than 4 days) and 56 patients in control arm. Both groups were comparable with regard to Age, Sex, Surgery for malignant disease, ASA score, CDC grade of surgery, HPB surgeries, Small intestinal surgeries, Colorectal surgeries, upper gastrointestinal surgeries, intraoperative blood product requirement, intraoperative hypotension or any other event, operative time. Prolonged hospital stay (> 4 days) was significantly associated with surgical site infections (p<0.0001), morbidity (p=0.001). Open surgeries were associated with prolonged hospital stay. (p=0.032). Conclusion: Prolonged Hospital stay is associated with increase surgical site infection and morbidity in Gastrointestinal and Hepatobiliary Surgery.

A semi-structured interview (SSI) is one of the essential tools in conduction qualitative research. This essay draws upon the pros and cons of applying semi-structured interviews (SSI) in the qualitative research method. Moreover, the challenges of SSI during the coronavirus pandemic are critically discussed to provide plausible recommendations.

To improve the understanding of soil–pile interaction of laterally loaded piles, the quasi-static test of pile group foundation in silty clay with 5 foundation piles arranged in cross shape is carried out. The direct measurement-based p–y curves at different depths showed nonlinear behavior, in which the initial stiffness and ultimate soil reaction increased as the depth increased. The loading displacement amplitude corresponding to the failure of each foundation pile in the high axial compression reinforced concrete pile group foundation is given as follows: the front-end nappe foundation pile (#3 pile) is 6mm, the middle pile is 16mm, the front-end nappe foundation pile is 20mm, and the loading displacement amplitude of side pile is 24mm. In silty clay, due to the existence of pile group effect, the edge effect has little effect on the horizontal foundation bed coefficient of foundation pile in pile group, while the influence of masking effect on the horizontal foundation bed coefficient of each foundation pile in pile group is not related to the position of pile, but only to the existence of masking effect, and the influence of different columns of masking effect on the horizontal foundation bed coefficient is the same.