Single-incision versus conventional multi-incision laparoscopic appendicectomy for suspected uncomplicated appendicitis.

BACKGROUND: Appendicectomy is a well-established surgical procedure to manage acute appendicitis. The operation was historically performed as an open procedure and is currently performed using minimally invasive surgical techniques. A recent development in appendicectomy technique is the introduction of single-incision laparoscopic surgery. This incorporates all working ports (either one multi-luminal port or multiple mono-luminal ports) through a single skin incision; the procedure is known as single-incision laparoscopic appendicectomy or SILA. Unanswered questions remain regarding the efficacy of this novel technique, including its effects on patient benefit and satisfaction, complications, and long-term outcomes, when compared to multi-incision conventional laparoscopy (CLA). This is an update of a review published in 2011. OBJECTIVES: To assess the effects of single-incision laparoscopic appendicectomy compared with multi-incision laparoscopic appendicectomy, on benefits, complications, and short-term outcomes, in patients with acute appendicitis. SEARCH METHODS: We searched the Cochrane Central Register of Controlled trials (CENTRAL, the Cochrane Library 2018 Issue 2), Ovid MEDLINE (1983 to January 2024), Ovid Embase (1983 to January 2024), the WHO International Clinical Trial Register (January 2024), and Clinicaltrials.gov (January 2024). We also searched reference lists of relevant articles and reviews, conference proceedings, and ongoing trial databases. The searches were carried out on 20 January 2024. SELECTION CRITERIA: We included randomised controlled trials (RCTs) that compared the single-incision procedure SILA against CLA for patients (male and female) over the age of 10 years, diagnosed with appendicitis, or symptoms of appendicitis, and undergoing laparoscopic appendicectomy. DATA COLLECTION AND ANALYSIS: Two review authors independently selected studies for inclusion, extracted data into a standardised form, and assessed the risk of bias in the studies. We extracted data relevant to the predetermined outcome measures. Where appropriate, we calculated a summary statistic: odds ratio (OR) with 95% confidence intervals (CIs) for dichotomous data and mean difference (MD) with 95% CI for continuous data. We used Review Manager Web for our statistical analysis. MAIN RESULTS: This review was first published in 2011, when there was no RCT evidence available. For this update, we identified 11 RCTs involving 1373 participants (689 in the SILA groups and 684 in the CLA groups). The participants were similar at baseline in terms of age (mean 31.7 (SILA) versus 30.9 years (CLA)) and sex (female: 53.0% (SILA) versus 50.3% (CLA)). Diagnosis of appendicitis was based on clinical assessment; none of the studies used a diagnosis confirmed by imaging as part of their inclusion criteria. The certainty of the evidence was low to moderate, and the outcomes were predominately reported in the short term. Pain scores at 24 hours after surgery may be similar between the SILA and CLA groups (mean score SILA 2.53 versus CLA 2.65; mean difference (MD) in pain score -0.12, 95% CI -0.52 to 0.28; 294 participants, 4 RCTs; low-certainty evidence). SILA probably had superior cosmetic results as indicated by patients using the Body Image questionnaire (5 to 20) (mean score SILA 14.9 versus CLA 12.4; cosmesis score MD 1.97, 95% CI 1.60 to 2.33; 266 participants, 3 RCTs; moderate-certainty evidence). The rate of visceral and vascular injury was probably similar with both techniques (SILA 0/168 versus 4/169; OR 0.20, 95% CI 0.02 to 1.79; 337 participants, 3 RCTs; moderate-certainty evidence). The conversion rate to CLA or open surgery may be higher for SILA procedures than the conversion rate from CLA to open surgery (SILA 32/574 versus CLA 7/569; OR 2.95, 95% CI 1.36 to 6.42; 1143 participants, 9 RCTs; low-certainty evidence). Use of an additional port site was probably more likely with SILA compared to CLA (SILA 28/328 versus CLA 4/336; OR 3.80, 95% CI 1.13 to 12.72; 664 participants, 5 RCTs; moderate-certainty evidence). The recovery time was probably similar for both interventions for hospital stay (mean length of stay in hospital for SILA 2.25 days versus 2.29 days for CLA patients; MD -0.13, 95% CI -0.23 to 0.03; 1241 participants, 10 RCTs; moderate-certainty evidence) and time to return to normal activities (SILA 9.28 days versus CLA 10.0 days; MD -0.59, 95% CI -1.99 to 0.81; 451 participants, 4 RCTs; moderate-certainty evidence). We have low-to-moderate confidence in our findings due to differences in the measurement of certain outcomes, and lack of blinding in the studies, which makes them prone to performance bias. AUTHORS' CONCLUSIONS: There is low-to-moderate certainty evidence that single-incision laparoscopic appendicectomy is comparable to conventional laparoscopic appendicectomy in terms of complications, length of hospital stay, return to normal activities, and postoperative pain in the first 24 hours. The disadvantage of SILA may be a higher conversion rate, but SILA is probably associated with better patient cosmetic satisfaction.

Surgical and medical interventions for abdominal aortic graft infections.

BACKGROUND: Abdominal aortic graft infections are a major complication following abdominal aortic aneurysm surgery, with high morbidity and mortality rates. They can be treated surgically or conservatively using medical management. The two most common surgical techniques are in situ replacement of the graft and extra-anatomical bypass. Medical management most commonly consists of a course of long-term antibiotics. There is currently no consensus on which intervention (extra-anatomical bypass, in situ replacement, or medical) is the most effective in managing abdominal aortic graft infections. Whilst in emergency or complex situations such as graft rupture surgical management is the only option, in non-emergency situations it is often personal preference that influences the clinician's decision-making. OBJECTIVES: To assess and compare the effects of surgical and medical interventions for abdominal aortic graft infections. SEARCH METHODS: The Cochrane Vascular Information Specialist searched the Cochrane Vascular Specialised Register, CENTRAL, MEDLINE, Embase, and CINAHL databases and WHO ICTRP and ClinicalTrials.gov trials registers to 2 December 2019. We also reviewed the bibliographies of the studies identified by the search and contacted specialists in the field and study authors to request information on any possible unpublished data. SELECTION CRITERIA: We aimed to include all randomised controlled trials that used surgical or medical interventions to treat abdominal aortic graft infections. The definitions of abdominal aortic graft infections were accepted as presented in the individual studies, and included secondary infection due to aortoenteric fistula. We excluded studies presenting data on prosthetic graft infections in general, unless data specific to abdominal aortic graft infections could be isolated. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed all studies identified by the search. We planned to independently assess risk of bias of the included trials and to evaluate the quality of the evidence using the GRADE approach. Our main outcomes were overall mortality, amputation, graft re-infection, overall graft-related complications, graft-related mortality, acute limb ischaemia, and re-intervention. MAIN RESULTS: We identified no randomised controlled trials to conduct meta-analysis. AUTHORS' CONCLUSIONS: There is currently insufficient evidence to draw conclusions to support any treatment over the other. Multicentre clinical trials are required to compare different treatments for the condition.

Regional variations in trajectories of long-term readmission rates among patients in England with heart failure.

BACKGROUND: We aimed to compare the characteristics and types of heart failure (HF) patients termed "high-impact users", with high long-term readmission rates, in different regions in England. This will allow clinical factors to be identified in areas with potentially poor quality of care. METHODS: Patients with a primary diagnosis of heart failure (HF) in the period 2008-2009 were identified using nationally representative primary care data linked to national hospital data and followed up for 5 years. Group-based trajectory models and sequence analysis were applied to their readmissions. RESULTS: In each of the 8 NHS England regions, multiple discrete groups were identified. All the regions had high-impact users. The group with an initially high readmission rate followed by a rapid decline in the rate ranged from 2.5 to 11.3% across the regions. The group with constantly high readmission rate compared with other groups ranged from 1.9 to 12.1%. Covariates that were commonly found to have an association with high-impact users among most of the regions were chronic respiratory disease, chronic renal disease, stroke, anaemia, mood disorder, and cardiac arrhythmia. Respiratory tract infection, urinary infection, cardiopulmonary signs and symptoms and exacerbation of heart failure were common causes in the sequences of readmissions among high-impact users in all regions. CONCLUSION: There is regional variation in England in readmission and mortality rates and in the proportions of HF patients who are high-impact users.

Spot urinary 5-hydroxyindoleacetic acid is not an ideal diagnostic test for acute appendicitis.

BACKGROUND AND PURPOSE OF THE STUDY: There is growing evidence to suggest the use of urinary 5-hydroxyindoleacetic acid (5-HIAA) test to help with the diagnosis of appendicitis. The aim of our study was to establish whether urinary 5-HIAA could be used as an effective diagnostic test for acute appendicitis. DESIGN AND METHODS: A prospective double-blinded study was carried out from December 2014 to October 2015. Patients admitted to the emergency surgical ward of a teaching hospital with suspected appendicitis were included in the study. The diagnostic accuracy of the test was measured by receiver operating characteristic curve. RESULTS: Ninety-seven patients were divided into 2 groups: acute appendicitis (n=38) and other diagnosis (n=59). The median value of urinary 5-HIAA was 24.19µmol/L (range, 5.39-138.27) for acute appendicitis vs 18.87µmol/L (range, 2.27-120.59) for other diagnosis group (P=.038). The sensitivity and specificity of urinary 5-HIAA at a cutoff value of 19µmol/L were 71% and 50%, respectively. Receiver operating characteristic analysis showed that the area under curve was 0.64 (confidence interval [CI], 0.513-0.737) for urinary 5-HIAA, which was lower than white blood cell count (0.69; CI, 0.574-0.797), neutrophil count (0.68; CI, 0.565-0.792), and C-reactive protein (0.76; CI, 0.657-0.857). There was no significant difference in the median values of 5-HIAA between different grades of severity of appendicitis (P=.704). CONCLUSION: Urinary 5-HIAA is not an ideal test for the diagnosis of acute appendicitis.

A rare cause of massive haematuria: Internal iliac artery-ureteric fistula.

Ureteric fistula into the arterial tree is a well-recognised, but uncommon condition. The involvement of internal iliac artery is rare. We present a rare case of fistulous communication and subsequent infection of an internal iliac artery aneurysm and ureter secondary to insertion of ureteric stent following endovascular exclusion of the aneurysm and its management. Nephrostogram identified the fistula not seen on computerised tomography. This case highlights the awareness of such pathology allowing for prompt recognition of the condition and importance of appropriate imaging.

Meta-analysis of self-gripping mesh (Progrip) versus sutured mesh in open inguinal hernia repair.

BACKGROUND: This metaanalysis was designed to systematically analyse all published randomized controlled trials comparing self-gripping mesh (ProGrip) and sutured mesh to analyse early and long term outcomes for open inguinal hernia repair. METHODS: A literature search was performed using the Cochrane Colorectal Cancer Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials in the Cochrane Library, MEDLINE, Embase and Science Citation Index Expanded. Randomized trials comparing self-gripping mesh with sutured mesh were included. Statistical analysis was performed using Review Manager Version 5.2 software. The primary outcome measures were hernia recurrence and chronic pain after operation. Secondary outcome measures included surgical time, wound complications and perioperative complications. RESULTS: Five randomized trials were identified as suitable, including 1170 patients. There was no significant difference between the two types of mesh repairs in perioperative complications, wound haematoma, chronic groin pain and hernia recurrence. Wound infection was lower in self gripping mesh group compared to sutured mesh but this was not statistically significant (risk ratio (RR) 0.57, 95% confidence interval 0.30-1.06, P = 0.08). The duration of operation was significantly shorter with self-gripping mesh compared to sutured mesh with a mean difference of -5.48 min [-9.31, -1.64] Z = 2.80 (P = 0.005). CONCLUSION: Self-gripping mesh was associated with shorter operative time compared to sutured mesh. Both types of mesh repairs have comparable perioperative and long term outcomes.

Glue versus suture fixation of mesh during open repair of inguinal hernias: a systematic review and meta-analysis.

BACKGROUND: Glue fixation of mesh has been explored for some time as a strategy for reducing postoperative chronic groin pain. Previous studies have come to different conclusions about the superiority of one method over another. We conducted a meta-analysis of randomized control trials comparing the performance of glue versus suture fixation of mesh in open inguinal hernioplasty. METHODS: Studies published up to November 2012 were searched using PubMed, EMBASE, MEDLINE, Cochrane Library, and the international standard randomised controlled trials number (ISRCTN) register. Mean differences (MDs) were derived from secondary continuous outcomes and pooled risk ratios (RRs) for categoric outcomes. Meta-analysis was conducted utilizing the random-effects and fixed-effects models as appropriate. RESULTS: Ten randomized controlled studies were selected, with a total of 1,623 patients. Glue fixation for open inguinal hernioplasty reduced chronic groin pain (RR 0.46, 95 % confidence interval (CI) 0.22-0.97), hematoma (RR 0.56, 95 % CI 0.34-0.90), acute postoperative pain (MD -7.92, 95 % CI, -13.17 to -2.66), and time taken to return to normal activities (MD -1.39, 95 % CI, -2.58 to -0.21). There was no evidence of an increase in adverse outcomes including recurrence with glue fixation (RR 0.83, 95 % CI 0.30-2.35). CONCLUSIONS: Glue fixation of mesh for open inguinal hernioplasty is superior in many outcomes including the reduction of chronic groin pain. Glue fixation was not associated with an increased risk of hernia recurrence.

Laparoscopic versus open liver resection for benign and malignant hepatic lesions in adults.

BACKGROUND: Liver (hepatic) resection refers to removal of the whole liver, or one or more of its vascular segments. Elective liver resection is mainly performed for benign and malignant liver tumours. The operation can be performed as an open procedure or with a laparoscopic approach. With the advancement of laparoscopic skills and equipment, liver resection is selectively being carried out with this approach. A laparoscopic procedure is intended to be less severe, allowing for quicker healing, fewer complications, and a shorter hospital stay as the insult to the body is minimised. However, evidence about the efficacy of this approach when compared to an open procedure is still scattered. Current practice at different hepato-pancreato-biliary centres is based on the clinical judgement of experts in their field, which is highly insufficient in terms of evidence. OBJECTIVES: To assess the benefits and harms of laparoscopic versus open liver resection for benign or malignant lesions on the liver in adult patients. SEARCH METHODS: We searched the Cochrane Hepato-Biliary Group Controlled Trials Register, Cochrane Central Register of Controlled Trials in The Cochrane Library, MEDLINE, EMBASE, and Science Citation Index Expanded until February 2013. We also conducted searches of reference lists of relevant articles and reviews, conference proceedings, and ongoing trial databases. SELECTION CRITERIA: We searched for randomised clinical trials of participants undergoing liver resection for benign or malignant lesions which reported on benefits and harms. We searched for quasi-randomised or observational studies for reports of harm. DATA COLLECTION AND ANALYSIS: No data from randomised clinical trials could be collected. MAIN RESULTS: Two authors performed study selection independently. We were not able to identify any randomised clinical trials that met the inclusion criteria of our review protocol. We identified two ongoing randomised clinical trials performed in Europe with data yet to be published. We retrieved a few observational studies (prospective and retrospective) with the searches for randomised clinical trials. They included a limited number of participants in whom laparoscopic and open liver resection was compared. Since these studies were non-randomised observational studies, the results for any adverse events are not included in the review as the risk of bias in such studies is high. AUTHORS' CONCLUSIONS: No conclusions can be made at this time as no randomised clinical trials are available. In addition to the two ongoing randomised clinical trials for which results are expected to be published in the near future, well-designed, prospective, randomised clinical trials are needed in order to evaluate the benefits and harms of the laparoscopic procedure versus open liver resection.

Use of artificial intelligence to identify patients to be assessed in a breast clinic on 2-week wait: a retrospective cohort study.

Background: The number of urgent referrals from primary care to specialist one stop breast clinics continues to rise beyond the capacity of the 2-week wait service. This study aims to use artificial intelligence (AI) to identify patients with new breast symptoms requiring a biopsy to identify those who should be prioritised for urgent breast clinic assessment. Methods: Data were collected retrospectively for patients attending one stop triple assessment breast clinic at Broomfield hospital between 1 June and 1 October 2021. PHP machine learning software was used to run AI on the data to identify patients who had a core biopsy in clinic. Results: A total of 794 cases were referred to one stop breast clinic for new breast symptoms-37 male (4.6%) and 757 female (95.3%). The average age of the patients included was 43.2 years. Five hundred thirty-six patients (67.5%) presented with a breast lump, 180 (22.7%) with breast pain, 61 (7.7%) with changes to shape or skin and 13 (1.6%) with a lump identified by their general practitioner. The patients who had a biopsy were of increased age [52.8 (SD 17.9) vs. 44.1 (SD 16.8), P<0.001], and had previous mammogram [n=21, (31.8%) vs. n=148 (20.3%), P 0.03], previous benign breast disease [n=9 (13.6%) vs. n=23 (3.1%), P<0.001], and increased use of HRT [n=13 (19.7%) vs. n=53 (6.4%), P<0.001]. The sensitivity and specificity of AI with neural network algorithms were 84% and 90%, respectively. Conclusion: AI was very effective at predicting the presenting symptoms that are likely to result in biopsy and can therefore be used to identify patients who need to be seen urgently in breast clinic.

Prediction of negative axillary node clearance by sentinel node-positive to total node ratio: a retrospective cohort study.

Introduction: Increasing evidence suggests that de-escalation of axillary surgery is safe, without significantly impacting patient outcome. Obtaining positive lymph nodes at a sentinel lymph node biopsy (SNB) can guide decisions toward the requirement of axillary nodal clearance (ANC). However, methods to predict how many further nodes will be positive are not available. This study investigates the feasibility of predicting the likelihood of a negative ANC based on the ratio between positive nodes and the total number of lymph nodes excised at SNB. Methods: Retrospective data from January 2017 to March 2022 was collected from electronic medical records. Patients with oestrogen receptor (ER) positive and HER2 negative receptor disease were included in the study. ER-negative and HER2-positive disease was excluded, alongside patients who had chemotherapy before ANC. Results: Of 102 patients, 58.8% (n=60) had no macrometastasis at ANC. On average, 2.76 lymph nodes were removed at SNB. A higher SNB ratio of positive to total nodes [OR 11.09 (CI 95% 2.33-52.72), P=0.002] had a significant association with positive nodes during ANC. SNB ratio less than or equal to 0.33 (1/3) had a specificity of 79.2% in identifying cases that later had a negative completion ANC, with a 95.8% specificity of no further upgrade of nodal staging. Conclusion: A low SNB ratio of less than 0.33 (1/3) has a high specificity in excluding the upgradation of nodal staging on completion of ANC, with a false-negative rate of less than 5%. This may be used to identify patients with a low risk of axillary metastasis, who can avoid ANC.

A comprehensive review of hydrophobic silica and composite aerogels: synthesis, properties and recent progress towards environmental remediation and biomedical applications.

The hydrophobicity of silica and composite aerogels has enabled them to acquire applications in a variety of fields. With remarkable structural, morphological, and physiochemical properties such as high porosity, surface area, chemical stability, and selectivity, these materials have gained much attention of researchers worldwide. Moreover, the hydrophobic conduct has enabled these aerogels to adsorb substances, i.e., organic pollutants, without collapsing the pore and network structure. Hence, considering such phenomenal properties and great adsorption potential, exploiting these materials for environmental and biomedical applications is trending. The present study explores the most recent advances in synthetic approaches and resulting properties of hydrophobic silica and composite aerogels. It presents the various precursors and co-precursors used for hydrophobization and gives a comparative analysis of drying methods. Moreover, as a major focus, the work presents the recent progress where these materials have shown promising results for various environmental remediation and biomedical applications. Finally, the bottlenecks in synthesis and applicability along with future prospects are given in conclusions.

Laparoscopic vs. open liver resection for malignant liver disease. A systematic review.

INTRODUCTION: Since the introduction of minimally invasive techniques, there is little agreement about use of laparoscopic surgery for malignant liver lesions as compared to open resection. We aim to analyse all available data comparing both these groups. METHODS: All the studies that compared laparoscopic and open liver resections for malignant lesions were searched on various databases. Data were collected and analysed in Review Manager RevMan (version 5.0). RESULTS: There were total of 10 studies (n = 700) that compared laparoscopic (296/700) and open (404/700) hepatic resections for malignant lesions. Laparoscopic group was associated with reduced number of patients requiring blood transfusion [Odds ratio 0.35 CI 0.20, 0.60 P<0.001 HG 0.85], decreased number of positive resection margin [Odds ratio 0.34 CI 0.16, P0.006 HG 0.73] and decrease in overall complication rate [Odds ratio 0.43, CI 0.26, 0.73 P0.002 HG 0.22]. Laparoscopic group was associated with less operative blood loss [WMD 162.6 ml CI -261.79, 73.45 P<0.001] and reduced hospital stay [WMD 4.28 days CI -6.33, -2.23 P<0.001]; however, there was significant heterogeneity [HG <0.001] between the studies for these parameters. CONCLUSION: The laparoscopic group was associated with reduce overall complication rate, positive resection margins and number of patients requiring blood transfusion. There is still need for level I and II data to compare laparoscopic versus open hepatic resection in malignant lesions.

Bilateral cerebellopontine angle lesions not always NF2: diagnostic pitfall.

Bilateral internal auditory canal (IAC) tumours are almost exclusively associated with bilateral vestibular schwannomas, and there is very little, if anything, that can mimic this appearance. We present a very rare case of a 75-year-old gentleman who initially presented with bilateral IAC tumours and later diagnosed as an isolated primary CNS myeloma without systemic involvement. This is a very rare presentation and has important diagnostic and therapeutic implications. He was treated with a combination of lenalidomide and dexamethasone. The treatment was well tolerated but with limited response. Although rare, metastasis should be considered as a differential diagnosis of IAC lesions.

Laparoscopic left lateral liver resection should be a standard operation.

BACKGROUND: Laparoscopic liver resection was first performed by Gagner in 1992. In the following years, laparoscopic left lateral liver resection rapidly gained the interest of hepatobiliary surgeons due to the easy accessibility of the left lateral segment. This study aimed to gather and analyze available data from the observational studies that have compared laparoscopic and open left lateral hepatic resections. METHODS: All the studies comparing laparoscopic and open left lateral liver resections were searched on the available databases including Medline, Ovid, Embase, Pubmed, and the Cochrane database. The latest date for the search was 30 January 2010. All the articles were cross-references. The studies comparing left lateral liver resections were included in the metaanalysis. Data was analyzed using Review Manager software version 5.0. RESULTS: After the literature search, a total of seven studies were included in the metaanalysis, which involved 245 patients: 134 in the laparoscopic group and 111 in the open group. The laparoscopic group was shown to have a lower overall complication rate (0.36; 95% CI, 0.20-0.68) and shorter operative time (48.07 min; 95% CI, 30.93-65.21 min) than the open group (p=0.001), which were not associated with heterogeneity between the studies (p=0.84 and 0.34, respectively). The hospital stay of the laparoscopic group was 4.52 days shorter (95% CI, -8.03 to -1.02) than that of the open group. This difference was significant (p=0.01) but associated with significant heterogeneity between the studies. CONCLUSION: Although no randomized controlled trials have compared open and laparoscopic liver resection, this metaanalysis demonstrated that laparoscopic left lateral resection is a safe and feasible option associated with a reduced overall complication rate. The authors conclude that it should be performed routinely in liver centers.

Single incision versus conventional multi-incision appendicectomy for suspected appendicitis.

BACKGROUND: Appendicectomy is a well established surgical procedure used in the management of acute appendicitis.  The operation can be performed with minimally invasive surgery (laparoscopic) or as an open procedure. A recent development in appendicectomy has been the introduction of less invasive single incision laparoscopic surgery, using a single multi-luminal port or multiple mono-luminal ports, through a single skin incision. There are yet unanswered questions regarding the efficacy of this new and novel technique including: patient benefit and satisfaction, complications, long-term outcomes, and survival. OBJECTIVES: The aim of this review is to perform meta-analysis using data from available trials comparing single incision with conventional multi-incision laparoscopic appendicectomy for appendicitis, in order to ascertain any differences in outcome. SEARCH STRATEGY: We searched the electronic databases including MEDLINE/PubMed (from 1980 to December 2010), EMBASE/Ovid (from 1980 to December 2010) and CENTRAL (The Cochrane Library 2010, Issue 11) with pre-specified terms. We also searched reference lists of relevant articles and reviews, conference proceedings and ongoing trial databases. SELECTION CRITERIA: Randomised or quasi-randomised controlled trials of patients with appendicitis, or symptoms of appendicitis, undergoing laparoscopic appendicectomy, in which at least one arm involves single incision procedures and another multi-incision procedures. DATA COLLECTION AND ANALYSIS: There were no RCTs or prospectively controlled trials found that met the inclusion criteria. MAIN RESULTS: Three authors performed study selection independently.No studies that met the inclusion criteria of this review were identified. Current evidence exists only the form of case-series.This review has been authored as 'empty' pending the results of 5 ongoing trials. AUTHORS' CONCLUSIONS: No RCTs comparing single incision laparoscopic appendectomy with multi-incision surgery could be identified. No definitive conclusions can be made at this time. Well designed prospective RCTs are required in order to evaluate benefit or harm from laparoscopic surgical approaches for appendicectomy. Until appropriate data has been reported, the institutional polices of healthcare providers must be based on the clinical judgement of experts in the field.

Impact of enteral prophylactic antibiotics on the trends of inflammatory markers following laparoscopic colorectal cancer surgery: A retrospective and prospective Cohort Study.

BACKGROUND: The study aimed to assess the effect of oral prophylactic antibiotics (OAB) with mechanical bowel preparation (MBP) on the serial measurement of postoperative inflammatory markers and clinical outcomes of the patients undergoing laparoscopic colorectal cancer resection surgery. METHODS: A retrospective and prospective data collection was carried out from January 2019 to March 2020 for the patients undergoing laparoscopic colorectal cancer resection. Daily measurements of inflammatory markers were obtained up to 7 days following surgery. The measurements of inflammatory markers were compared between patients who received a 1 week course of OAB along with MBP to those who only received MBP. RESULTS: There were a total of 110 patients that were divided into 2 groups: patients who received OAB and MBP (n = 44, 40%) and those who had MBP only (n = 66, 60%). There was no significant difference between the patient characteristics and preoperative staging of the cancer between the 2 groups. The overall length of stay was significantly lower in the patients who received OAB (9.09 days [SD 7.94] vs. 6.63 days [SD 4.96], P 0.02). The patients with OAB and MAP had persistently and significantly low levels of white blood cell count, CRP, and neutrophil count throughout the postoperative period as compared to those who only had MBP. CONCLUSION: The study demonstrated reduction in serial measurement of inflammatory markers throughout postoperative stay for the patients receiving preoperative OAB. The use of OAB helps in physiological recovery of the patient by reducing the inflammatory process postoperatively.

Online application for self-referral of the patients with breast symptoms.

INTRODUCTION: The study aimed to devise a self-referral mobile/web application for patients with new breast symptoms, giving them an outcome, thus bypassing the need for primary care consultation. METHODS: The online application was designed on the automated algorithm based on evidence-based guidelines for referral to breast onco-plastic units. A retrospective questionnaire-based anonymous survey was carried out at the breast unit in Southend University Hospital (January 2019 to March 2020). The outcome of the patients was recorded, the same data was entered in the software and its outcome was compared with their clinic outcome to assess and validate the software. Chi-square and t-test were used in formulating results. RESULTS: Data was collected for 366 patients who were referred urgently to the clinic. Only 50.5% (n = 186) were appropriately referred, with the main complaint being breast lump (94.1%). 39.6% of referred patients did not require a secondary care referral. Sensitivity and specificity for identifying patients requiring urgent referral was 100% and 98%, respectively. CONCLUSION: A significant number of urgent referrals to breast units do not require urgent specialist referral, and this results in a big strain on the hospital service. The discussed self-referral pathway is a promising alternative with the potential to reduce workload in primary and secondary care and improve patient satisfaction.

Use of Prophylactic Steroids to Prevent Hypocalcemia and Voice Dysfunction in Patients Undergoing Thyroidectomy: A Randomized Clinical Trial.

Importance: Total thyroidectomy is associated with risks related to temporary hypocalcemia and vocal quality dysfunction. Dexamethasone has been proposed to have a physiological effect on hypocalcemia and voice quality. Objective: To assess the effect of preoperative dexamethasone used to improve hypocalcemia and postthyroidectomy voice dysfunction. Design, Setting, and Participants: This double-blind, parallel-group, placebo-controlled randomized clinical trial was conducted from January 15, 2014, to December 31, 2019, at the Department of Surgery, Holy Family Hospital in Rawalpindi, Pakistan. All patients with a benign thyroid condition and no preoperative corrected hypocalcemia and voice or vocal quality dysfunction were included. Patients were excluded if they had previous thyroid or neck surgery, known vocal cord dysfunction on laryngoscopy, hearing or voice problems, a history of gastroesophageal reflux, stomach ulcer disease, or contraindications to steroid use. Interventions: Corrected serum calcium levels and Voice Analog Score defined and measured preoperatively. The dexamethasone group received a 2-mL intravenous dose of 8 mg of dexamethasone 60 minutes before the induction of anesthesia. In contrast, the placebo group received 2 mL of intravenous normal saline (0.9%) 60 minutes before the induction of anesthesia. Main Outcomes and Measures: Evidence of hypocalcemia and voice dysfunction. Voice dysfunction was defined as a subjective score of less than 50 on a Voice Analog Score scale of 0 to 100 points. Results: A total of 192 patients (mean [SD] age, 38.9 [12.4] years; 156 women [81.2%]) were included in the study, with 96 patients randomized to each study group (dexamethasone group, mean [SD] age, 39.2 [12.1] years; 75 women [78.1%]; placebo group, mean [SD] age, 38.5 [12.9] years; 81 women [84.5%]). In the first 24 hours after undergoing thyroidectomy, 47 patients (24.4%) developed hypocalcemia and 18 (9.4%) were symptomatic. At 3 days postthyroidectomy, 4 of 96 patients (4.2%) in the placebo group had hypocalcemia compared with no patients in the dexamethasone group. At 24 hours postthyroidectomy, 8 of 96 patients (8.3%) in the dexamethasone group had voice dysfunction compared with 32 of 96 patients (33.3%) in the placebo group. A total of 40 patients (20.8%) reported voice dysfunction. The absolute reduction in the rate of hypocalcemia at 24 hours was 24% (95% CI, 11.9%-35.2%) and at 3 days was 4.2% (-0.44% to 10.0%). The rate of symptomatic hypocalcemia was 19% lower in the dexamethasone group than in the placebo group (95% CI, 11.1%-27.7%). The rate of voice dysfunction was 25% lower in the dexamethasone group than in the placebo group (95% CI, 13.7%-35.7%). Conclusions and Relevance: In this randomized clinical trial, a single preoperative dose of dexamethasone was safe and effective in reducing postoperative hypocalcemia and voice dysfunction rates in patients undergoing thyroidectomy. Trial Registration: ClinicalTrials.gov identifier: NCT04752852.

Patient preferences for surgical techniques: should we invest in new approaches?

BACKGROUND: The face of surgery has changed over the past two decades with the introduction of laparoscopic techniques. The majority of surgical specialties now perform minimally invasive procedures hence decreasing the scarring, pain, and infection historically associated with open surgery. To further reduce the invasiveness of surgery, new surgical techniques like Natural Orifice Transluminal Endoscopic Surgery (NOTES) and Single-Port Surgery (SPS) are under development. Despite investment from the medical device industry and enthusiasm from medical professionals, we must analyse patient preferences and expectations of these novel techniques. This analysis will help us establish the demand for such techniques and guide future resource allocation. METHODS: A questionnaire-based study was derived to identify whether the concepts of innovative techniques are acceptable to the general population. Their preferences between different available surgical options were recorded along with their choices for new innovative techniques. This study was carried out face-to-face and by using an online survey. It comprised four questions based upon a hypothetical scenario of an acute appendicitis. All the data were captured in a prospective database and analysed using statistical software. RESULTS: A total of 750 participants from variable backgrounds took part in the study. NOTES or SPS without an established safety profile was accepted by 34.3% of patients. SPS was the most popular method followed by conventional laparoscopy. Open surgery and NOTES were the least preferred (ranked 1.78, 1.98, 2.94, and 3.27, respectively). Choosing between SPS and NOTES only, 80.6% opted for SPS, 11.8% NOTES, and 5.6% declined surgery. The most popular route of access for NOTES is oral (37.7%). CONCLUSION: Single-port surgery was the most preferred method and NOTES was the least preferred technique. This shows general acceptance of the concept of virtually scarless surgery but without using the natural orifices.

Algorithm-Based Online Software for Patients' Self-Referral to Breast Clinic as an Alternative to General Practitioner Referral Pathway.

Introduction The study aimed to assess the accuracy of online software in the use of self-referral to breast surgery clinics for patients with new signs and symptoms. The study also evaluated the appropriateness of GP referrals to breast clinics and evaluated patients' perceptions of an online self-referral portal to the breast clinic for the assessment of breast signs and symptoms.  Design and methods The pilot study was divided into two phases. In the first phase, prospective questionnaire-based data was collected from patients who were referred by a GP and presented to the regional breast unit with new signs and symptoms for breast conditions, Princess Alexandra Hospital NHS Trust (May - October 2018). The questionnaire assessed the time at each stage required by the patient to have a visit at the breast unit. It also asked the patient's opinion about an online self-referral portal to the surgical clinic. They were given hypothetical scenarios to evaluate their understanding of breast conditions. In the second phase, the patients presenting to symptomatic breast clinics were provided with the iPad to fill in their medical information in the online software. The data was collected between July and October 2019. The software algorithm was based on the National Institute of Clinical Health and Excellence (NICE) guidelines for breast conditions (2015). Breast surgeons' recommendations acted as a standard to evaluate the accuracy of GPs' referrals and software outcome for each patient.  Results There were 80 patients (mean age 49.1 [SD: 17.7], all females) included in the first phase of the study. The most common clinical presentation was a breast lump (47.6%), followed by breast pain (26.9%) and nipple changes (7.9%). Breast surgeons considered appropriate 75.6% of the referrals made by the GP. Seventy-two percent of the patients got an urgent appointment to see their GP, and 94.8% of the patients were urgently referred by their GP to see the breast surgeon. Only 37.8% of the urgent referrals were correctly referred as urgent. Having a direct online referral system for breast conditions will be beneficial for patients was agreed by 78.4%. The majority (98.1%) of the participants answered correctly for the hypothetical questions requiring breast surgeon review. In the second phase, there were a total of 86 patients with a mean age of 43.9 (SD: 13.3). The most common presentation was breast lump (n=68, 79.1%) and other presentations included breast pain, nipple changes, and discharge. The GPs' accuracy of correct referral was 69.1%. One third (30.9%) of the referrals could have been managed in the community or as a routine review by the breast surgeon. In comparison, the online software's accuracy was 85.1% accurate (p=0.001). The accuracy for detecting patients who needed urgent breast clinic review was 100% for online software.  Conclusion A large proportion of referrals could have been dealt with in the community or referred routinely. Patients would prefer a direct online referral system to the breast clinic. They understand red flag signs and symptoms. Online software has the potential to streamline patients for symptomatic breast clinics. It can reduce the burden on the GPs who are constantly under pressure to diagnose patients accurately and refer to the correct specialty appropriately within a short time.