Type of publication:
Book
Editor(s):
Rosin. D, Rogers P. *Cheetham. M, Schein,. M.
Citation:
Schein's Common Sense Emergency Abdominal Surgery, 5th Edition. (2021) Rosin D., Rogers. P. Cheetham. M, Schein,. M.(Editors). TFM Publishing, Shrewsbury
Author: Jason Curtis
Comparison of multiple gene expression platforms for measuring a bladder cancer hypoxia signature (2022)
Type of publication:
Journal article
Author(s):
Smith TAD; Lane B; More E; Valentine H; Lunj S; Abdelkarem OA; Irlam-Jones J; Shabbir R; Vora S; *Denley H; Reeves KJ; Hoskin PJ; Choudhury A; West CML
Citation:
Molecular Medicine Reports, 2022 Aug; Vol. 26 (2)
Abstract:
Tumour hypoxia status provides prognostic information and predicts response to hypoxia modifying treatments. A previous study by our group derived a 24 gene signature to assess hypoxia in bladder cancer. The objectives of the present study were to compare platforms for generating signature scores, identify cut off values for prospective studies, assess intra tumour heterogeneity and confirm hypoxia relevance. Briefly, RNA was extracted from prospectively collected diagnostic biopsies of muscle invasive bladder cancer (51 patients), and gene expression was measured using customised Taqman Low Density Array (TLDA) cards, NanoString and Clariom S arrays. Cross platform transferability of the gene signature was assessed using regression and concordance analysis. The cut off values were the cohort median expression values. Intra and inter tumour variability were determined in a retrospective patient cohort (n=51) with multiple blocks (2 18) from the same tumour. To demonstrate relevance, bladder cancer cell lines were exposed to hypoxia (0.1% oxygen, 24 h), and extracted RNA was run on custom TLDA cards. Hypoxia scores (HS) values showed good agreement between platforms: Clariom S vs. TLDA (r=0.72, P<0.0001; concordance 73%); Clariom S vs. NanoString (r=0.84, P<0.0001; 78%); TLDA vs. NanoString (r=0.80, P<0.0001; 78%). Cut off values were 0.047 (TLDA), 7.328 (NanoString) and 6.667 (Clariom S). Intra tumour heterogeneity in gene expression and HS (coefficient of variation 3.9%) was less than inter tumour (7.9%) variability. HS values were higher in bladder cancer cells exposed to hypoxia compared with normoxia (P<0.02). In conclusion, the present study revealed that application of the 24 gene bladder cancer hypoxia signature was platform agnostic, cut off values determined prospectively can be used in a clinical trial, intra tumour heterogeneity was low and the signature was sensitive to changes in oxygen levels in vitro.
Altmetrics:
Radiotherapy to the prostate for men with metastatic prostate cancer in the UK and Switzerland: Long-term results from the STAMPEDE randomised controlled trial (2022)
Type of publication:
Randomised controlled trial
Author(s):
Parker CC; James ND; Brawley CD; Clarke NW; Ali A; Amos CL; Attard G; Chowdhury S; Cook A; Cross W; Dearnaley DP; Douis H; Gilbert DC; Gilson C; Gillessen S; Hoyle A; Jones RJ; Langley RE; Malik ZI; Mason MD; Matheson D; Millman R; Rauchenberger M; Rush H; Russell JM; Sweeney H; Bahl A; Birtle A; Capaldi L; Din O; Ford D; Gale J; Henry A; Hoskin P; Kagzi M; Lydon A; O'Sullivan JM; Paisey SA; Parikh O; Pudney D; Ramani V; Robson P; *Srihari NN; Tanguay J; Parmar MKB; Sydes MR; STAMPEDE Trial Collaborative Group
Citation:
PLoS Medicine, 2022 Jun 07; Vol. 19 (6), pp. e1003998
Abstract:
Background: STAMPEDE has previously reported that radiotherapy (RT) to the prostate improved overall survival (OS) for patients with newly diagnosed prostate cancer with low metastatic burden, but not those with high-burden disease. In this final analysis, we report long-term findings on the primary outcome measure of OS and on the secondary outcome measures of symptomatic local events, RT toxicity events, and quality of life (QoL).Methods and Findings: Patients were randomised at secondary care sites in the United Kingdom and Switzerland between January 2013 and September 2016, with 1:1 stratified allocation: 1,029 to standard of care (SOC) and 1,032 to SOC+RT. No masking of the treatment allocation was employed. A total of 1,939 had metastatic burden classifiable, with 42% low burden and 58% high burden, balanced by treatment allocation. Intention-to-treat (ITT) analyses used Cox regression and flexible parametric models (FPMs), adjusted for stratification factors age, nodal involvement, the World Health Organization (WHO) performance status, regular aspirin or nonsteroidal anti-inflammatory drug (NSAID) use, and planned docetaxel use. QoL in the first 2 years on trial was assessed using prospectively collected patient responses to QLQ-30 questionnaire. Patients were followed for a median of 61.3 months. Prostate RT improved OS in patients with low, but not high, metastatic burden (respectively: 202 deaths in SOC versus 156 in SOC+RT, hazard ratio (HR) = 0·64, 95% CI 0.52, 0.79, p < 0.001; 375 SOC versus 386 SOC+RT, HR = 1.11, 95% CI 0.96, 1.28, p = 0·164; interaction p < 0.001). No evidence of difference in time to symptomatic local events was found. There was no evidence of difference in Global QoL or QLQ-30 Summary Score. Long-term urinary toxicity of grade 3 or worse was reported for 10 SOC and 10 SOC+RT; long-term bowel toxicity of grade 3 or worse was reported for 15 and 11, respectively.Conclusions: Prostate RT improves OS, without detriment in QoL, in men with low-burden, newly diagnosed, metastatic prostate cancer, indicating that it should be recommended as a SOC.Trial Registration: ClinicalTrials.gov NCT00268476, ISRCTN.com ISRCTN78818544.
Link to full-text [open access - no password required]
Altmetrics:
Effectiveness of a web-based virtual journal club to promote medical education (Web-Ed): protocol of a multicentre pragmatic randomised trial (2022)
Type of publication:Randomised controlled trial
Author(s):Michael Rimmer, Nagla Elfaki, Cheryl Dunlop, Damien Coleburt, Neil Cowan, Olivia Raglan, Jhia Jiat Teh, Maria Fisher, Sarah Mcrobbie, Nilaani Murugesu, Meera Ramcharn, Mohamed Abdelrahman, *Yazid Jibrel, *Matthew Wood, *William Parry-Smith, Bassel H Al Wattar
Citation:BMJ Open, 2022 Vol.12, Issue 6
Abstract:Introduction: A journal club (JC) is a commonly used medical educational tool. Videoconferencing technology can facilitate the delivery of JCs, however, there remains no evidence on the role of web-based virtual JCs in promoting the acquisition and retention of medical knowledge. The Web-Ed trial aims to evaluate the educational benefits, feasibility and acceptability of web-based virtual JCs compared with traditional face-to-face ones.
Methods and analysis: Web-Ed is a multicentre pragmatic parallel-group randomised trial across teaching hospitals within the UK National Health Service (NHS). We will enrol qualified doctors or medical students who are >18 years old, proficient in English and able to use online videoconferencing software. Block randomisation will be used to allocate participants in 1:1 ratio to either intervention group. Both groups will be presented with the same educational material and follow a standardised JC structure hosted by nominated moderators and medical faculty members.
The primary outcome is the difference in participants’ knowledge acquisition and retention 7 days after the JCs evaluated using standardised multiple-choice questions. We will report secondarily on the feasibility and acceptability of the JCs using Likert scale questionnaires. Assuming a 30% drop-out rate, we aim to enrol 75 participants to detect a 20% improvement in knowledge acquisition at 80% power and 5% significance. We will report using mean difference or risk ratio with 95% CIs and assess significance using parametric/non-parametric testing. Where relevant, we will adjust for predetermined characteristics (age, grade of training and session duration) using multivariate regression analyses.
Ethics and dissemination: Web-Ed was designed by doctors in training to address their learning needs and evaluate the preferred mode of learning. The trial results will be published in peer-reviewed journals and presented at relevant scientific conferences. The trial has been approved by the NHS Health Regulation Authority (21/HRA/3361).
Trial registration number: ISRCTN18036769.
Link to full-text [open access - no password required]
Altmetrics:
Stepped-wedge randomized controlled trial of laparoscopic ventral mesh rectopexy in adults with chronic constipation (2022)
Type of publication:Journal article
Author(s):Grossi U; *Lacy-Colson J; Brown SR; Cross S; Eldridge S; Jordan M; Mason J; Norton C; Scott SM; Stevens N; Taheri S; Knowles CH
Citation:Techniques in Coloproctology, 2022 May 19 [epub ahead of print]
Abstract:Background: The effectiveness of laparoscopic ventral mesh rectopexy (LVMR) in patients with defecatory disorders secondary to internal rectal prolapse is poorly evidenced. A UK-based multicenter randomized controlled trial was designed to determine the clinical efficacy of LVMR compared to controls at medium-term follow-up. Methods: The randomized controlled trial was conducted from March 1, 2015 TO January 31, 2019. A stepped-wedge RCT design permitted observer-masked data comparisons between patients awaiting LVMR (controls) with those who had undergone surgery. Adult participants with radiologically confirmed IRP refractory to conservative treatment were randomized to three arms with different delays before surgery. Efficacy outcome data were collected at equally stepped time points (12, 24, 36, 48, 60, and 72 weeks). Clinical efficacy of LVMR compared to controls was defined as ≥ 1.0-point reduction in Patient Assessment of Constipation-Quality of Life and/or Symptoms (PAC-QOL and/or PAC-SYM) scores at 24 weeks. Secondary outcome measures included 14-day diary data, the Generalized Anxiety Disorder scale (GAD-7), the Patient Health Questionnaire-9 (PHQ-9), St Marks incontinence score, the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-12), the chronic constipation Behavioral Response to Illness Questionnaire (CC-BRQ), and the Brief Illness Perception Questionnaire (BIPQ).Results: Of a calculated sample size of 114, only 28 patients (100% female) were randomized from 6 institutions (due mainly to national pause on mesh-related surgery). Nine were assigned to the T0 arm, 10 to T12, and 9 to T24. There were no substantial differences in baseline characteristics between the three arms. Compared to baseline, significant reduction (improvement) in PAC-QOL and PAC-SYM scores were observed at 24 weeks post-surgery (- 1.09 [95% CI – 1.76, – 0.41], p = 0.0019, and – 0.92 [- 1.52, – 0.32], p = 0.0029, respectively) in the 19 patients available for analysis (9 were excluded for dropout [n = 2] or missing primary outcome [n = 7]). There was a clinically significant long-term reduction in PAC-QOL scores (- 1.38 [- 2.94, 0.19], p = 0.0840 at 72 weeks). Statistically significant improvements in PAC-SYM scores persisted to 72 weeks (- 1.51 [- 2.87, – 0.16], p = 0.0289). Compared to baseline, no differences were found in secondary outcomes, except for significant improvements at 24 and 48 weeks on CC-BRQ avoidance behavior (- 14.3 [95% CI – 23.3, – 5.4], and – 0.92 [- 1.52, – 0.32], respectively), CC-BRQ safety behavior (- 13.7 [95% CI – 20.5, – 7.0], and – 13.0 [- 19.8, – 6.1], respectively), and BIPQ negative perceptions (- 16.3 [95% CI – 23.5, – 9.0], and – 10.5 [- 17.9, – 3.2], respectively).Conclusions: With the caveat of under-powering due to poor recruitment, the study presents the first randomized trial evidence of short-term benefit of LVMR for internal rectal prolapse. Trial Registration: ISRCTN Registry (ISRCTN11747152)
Validation of the OAKS prognostic model for acute kidney injury after gastrointestinal surgery (2022)
Type of publication:Journal article
Author(s):STARSurg Collaborative and EuroSurg Collaborative (includes Chohan K.; Dhuna S.; Haq T.; Kirby S.; Lacy-Colson J.; Logan P.; Malik Q.; McCann J.; Mughal Z.; Sadiq S.; Sharif I.; Shingles C.; Simon A.; Chaudhury N.; Rajendran K.; Akbar Z.)
Citation:BJS Open, 2022, 6(1)
Abstract:Background: Postoperative acute kidney injury (AKI) is a common complication of major gastrointestinal surgery with an impact on short- and long-term survival. No validated system for risk stratification exists for this patient group. This study aimed to validate externally a prognostic model for AKI after major gastrointestinal surgery in two multicentre cohort studies. Method(s): The Outcomes After Kidney injury in Surgery (OAKS) prognostic model was developed to predict risk of AKI in the 7 days after surgery using six routine datapoints (age, sex, ASA grade, preoperative estimated glomerular filtration rate, planned open surgery and preoperative use of either an angiotensin-converting enzyme inhibitor or an angiotensin receptor blocker). Validation was performed within two independent cohorts: a prospective multicentre, international study ('IMAGINE') of patients undergoing elective colorectal surgery (2018); and a retrospective regional cohort study ('Tayside') in major abdominal surgery (2011-2015). Multivariable logistic regression was used to predict risk of AKI, with multiple imputation used to account for data missing at random. Prognostic accuracy was assessed for patients at high risk (greater than 20 per cent) of postoperative AKI. Result(s): In the validation cohorts, 12.9 per cent of patients (661 of 5106) in IMAGINE and 14.7 per cent (106 of 719 patients) in Tayside developed 7-day postoperative AKI. Using the OAKS model, 558 patients (9.6 per cent) were classified as high risk. Less than 10 per cent of patients classified as low-risk developed AKI in either cohort (negative predictive value greater than 0.9). Upon external validation, the OAKS model retained an area under the receiver operating characteristic (AUC) curve of range 0.655-0.681 (Tayside 95 per cent c.i. 0.596 to 0.714; IMAGINE 95 per cent c.i. 0.659 to 0.703), sensitivity values range 0.323-0.352 (IMAGINE 95 per cent c.i. 0.281 to 0.368; Tayside 95 per cent c.i. 0.253 to 0.461), and specificity range 0.881-0.890 (Tayside 95 per cent c.i. 0.853 to 0.905; IMAGINE 95 per cent c.i. 0.881 to 0.899). Conclusion(s): The OAKS prognostic model can identify patients who are not at high risk of postoperative AKI after gastrointestinal surgery with high specificity.
Link to full-text [open access - no password required]
A single faecal bile acid stool test demonstrates potential efficacy in replacing SeHCAT testing for bile acid diarrhoea in selected patients (2022)
Type of publication:Journal article
Author(s):Kumar A; Al-Hassi HO; Jain M; Phipps O; Ford C; Gama R; Steed H; *Butterworth J; McLaughlin J; Galbraith N; Brookes MJ; Hughes LE
Citation:Scientific Reports, 2022 May 18; Vol. 12 (1), pp. 8313
Abstract:This study examines the validity of measuring faecal bile acids (FBA) in a single stool sample as a diagnostic tool for bile acid diarrhoea (BAD) by direct comparison to the 75 selenium-homotaurocholic acid (SeHCAT) scan. A prospective observational study was undertaken. Patients with chronic diarrhoea (> 6 weeks) being investigated for potential BAD with SeHCAT scan provided stool samples for measurement of FBA, using an enzyme-linked immunosorbent assay. Patients were characterised into four groups: SeHCAT negative control group, post-cholecystectomy, idiopathic BAD and post-operative terminal ileal resected Crohn's disease. Stool samples were collected at baseline and 8-weeks post treatment to determine whether FBA measurement could be used to monitor therapeutic response. 113 patients had a stool sample to directly compare with their SeHCAT result. FBA concentrations (μmol/g) and interquartile ranges in patients in the control group (2.8; 1.6-4.2), BAD (3.6; 1.9-7.2) and post-cholecystectomy cohort 3.8 (2.3-6.8) were similar, but all were significantly lower (p < 0.001) compared to the Crohn's disease cohort (11.8; 10.1-16.2). FBA concentrations in patients with SeHCAT retention of < 15% (4.95; 2.6-10.5) and < 5% (9.9; 4.8-15.4) were significantly higher than those with a SeHCAT retention > 15% (2.6; 1.6-4.2); (p < 0.001 and p < 0.0001, respectively). The sensitivity and specificity using FBA cut-off of 1.6 μmol/g (using ≤ 15% SeHCAT retention as diagnostic of BAD) were 90% and 25% respectively. A single random stool sample may have potential use in diagnosing severe BAD or BAD in Crohn's patients. Larger studies are now needed to confirm the potential efficacy of this test to accurately diagnose BAD in the absence of SeHCAT testing.
Link to full-text [open access - no password required]
#OrthoTwitter: social media as an educational tool (2020)
Type of publication:Journal article
Author(s):Sahu MA; Goolam-Mahomed Z; Fleming S; *Ahmed U
Citation:BMJ Simulation & Technology Enhanced Learning, 2020 Sep 07; Vol. 7 (5), pp. 277-284
Abstract:Aims: The increased use of social media creates opportunity for new, effective methods of delivering medical and clinical education. Twitter is a popular social media platform where users can post frequent updates and create threads containing related content using hashtags. This study aims to investigate and analyse the type of content relating to orthopaedic surgery that is being posted on the platform of Twitter.Methods: A retrospective search was performed for tweets containing the words 'orthopaedic surgery' or 'orthopedic surgery' or the use of the hashtag '#OrthoTwitter' between November 2018 to November 2019. A total of 5243 tweets were included.Results: Tweets containing 'orthopaedic surgery' or 'orthopedic surgery' most frequently contained promotional or marketing content (30% promotional, 21% marketing), and private organisations were the category of author to which the greatest number of tweets belonged (30%). Tweets containing educational or research content were the least common among all tweets containing 'orthopaedic surgery' or 'orthopedic surgery' (11%). In contrast, of the tweets containing the hashtag '#OrthoTwitter', 44% contained educational or research content, 15% contained promotional content and no tweets containing marketing content. Furthermore, 87% of all tweets using the hashtag '#OrthoTwitter' were from orthopaedic surgeons, and the least number of tweets were from private organisations (2%).Conclusion: Twitter is a widely used social media platform regarding orthopaedic surgery. We propose that the hashtag '#OrthoTwitter' can be used to create an online community of orthopaedic surgeons where members can assist one another through sharing reliable and educational content.
The positive impact of GIRFT (getting it right first time) on arthroplasty services in times of COVID-19 (2022)
Type of publication:
Journal article
Author(s):
*Khan MM; *Khawar H; *Perkins R; Pardiwala A
Citation:
Annals of medicine and surgery, 2022 May; Vol. 77, pp. 103655
Abstract:
Background: This observational study evaluates the trends in arthroplasty services across National Health Services (NHS) following the COVID-19 pandemic about GIRFT (Getting it Right First Time) guidelines concerning National joint registry data (NJR data). Introduction: Since the advent of the COVID-19 crisis sustainability of elective arthroplasty services have become a burning question in NHS. Capacity crisis, unknown COVID-19 infection status, lack of ring-fenced beds, winter crisis, and unprecedented trauma have aggravated the situation further leading to severe impairment in quality of life and service provision. GIRFT guidelines have suggested a few solutions to this crisis and one of them is dividing the hospitals into Hot (trauma) and cold (elective) sites. Objectives: To review NJR data for pre and post COVID era along with the service structure of the hospital and test the hypothesis that whether redistribution of services into hot and cold sites is a possible solution for sustainable arthroplasty service across NHS. Methodology: A search was made into the NJR data from 2019, 2020, and 2021. The First 7 months were taken from each year I.e. From Ist January to 31st of July. A review of entries for arthroplasty was considered for all hospitals across England and Wales. Hospitals in Scotland, Ireland, and Isles of Man and major trauma centers were excluded. Any hospital that was recording at least 15 arthroplasty cases for 4 out of 7 months in 2021 was considered for review. A brief evaluation of their service structure was made, and hospitals were divided into Elective Centres (EC), Urgent Care Centres (UCC), and District General Hospitals (DGH) with in-house emergency services based on the information provided on their official website. In NJR data "completed operations by submission date" column was considered as a reference for data collection. A total of 1807, 1800, and 1810 were identified for 2019, 2020, and 2021 respectively. However, after applying inclusion criteria total number of entries was reduced to 120 hospitals. Data analysis and selection of hospitals were reviewed twice by two authors (MMK and AP) at different times to avoid any bias and reduce the chances of human error that can affect the outcome. A sub-analysis of data for the last 3 months (May, June, and July) was also performed for the respective years to get a better picture of arthroplasty trends and reduce the flaws of data interpretation. Ethical Approval and Data Consideration: A formal approval was taken from the NJR team in the UK before the data processing was initiated. The data source being used was available for public review on the NJR website. The team was happy for us to process and evaluate the data as per needs of our study. However, they requested a disclaimer and appreciation note for the members of the NJR team and hospital personnel across the UK that have made the provision of data and subsequent analysis leading to this study feasible. Results: 18 EC were included. The mean number of cases recorded per center was 427, 68, 348 for 2019, 2020, and 2021 respectively.20 UCC were identified. The mean number of cases performed were 213, 24, and 195 in 2019, 2020, and 2021 respectively. Similarly, 60 DGH with emergency services were included and the average number of cases recorded were 194, 27, and 166 for 2019, 2020, and 2021 respectively. Compared to 2019 out of 148 DGH in 2019 only 60 can provide a sustainable arthroplasty service signifying a drop of 40% in 2021 in the number of DGH which are contributing to elective services. Conclusions: The overall productivity of theatres in terms of arthroplasty services has decreased since the reinitialization of services in 2021. There is a need of hour to divide the services into hot and cold sites in terms of A/E and elective centers to provide safe and uninterrupted provision of arthroplasty services and address long waiting times for patients. Provisional of ring-fenced beds and arthroplasty wards is more technically feasible in centers that are not providing in-house emergency admission pathways or are specialist, dedicated elective centers
Link to full-text [open access - no password required]
Vesicourachal diverticulum (2022)
Type of publication:Journal article
Author(s):*Mohamed G; *Ghani Z; *Lynn N; *Masilamani M; *Rowlands J
Citation:Annals of the Royal College of Surgeons of England. 104(9) (pp e255-e257), 2022. Date of Publication: 01 Nov 2022.
Abstract:We report a rare complication involving a healthy 45-year-old male patient who underwent an emergency laparoscopic appendicectomy for acute perforated gangrenous appendicitis. The patient was catheterised pre- procedure and the ports were inserted under vision. Upon completion of the procedure, a 15 Fr Robinson drain was left in the pelvis and was fed through the suprapubic port hole. Postoperatively the patient developed worsening, generalised abdominal pain and high output from the drain. The patient was re-catheterised but the computed tomography (CT) cystogram did not show any injury to the bladder. The drain fluid creatinine was noted to be raised (>4,000), indicating that urine was leaking into the drain. Conventional cystogram confirmed a contrast leak from the dome around the drain. Flexible cystoscopy confirmed that the drain had transversed the vesicourachal diverticula. The drain was pulled back and converted to a suprapubic catheter with the patient subsequently being discharged. Vesicourachal diverticula is a rare and often asymptomatic anomaly. When undertaking laparoscopic surgery, precautions should be taken to prevent port site injury such as catheterising the patient to ensure the bladder is empty and inserting the ports under direct vision. It is safer to visualise muscle rather than peritoneum during port insertion. In this case, the bladder diverticula was noticed extraperitoneally. Though the indirect CT cystogram reported no injury, this was unreliable as the bladder was not distended which led to the subtle injury being missed. Traditional cystogram should be considered in cases with a negative CT cystogram and a strong suspicion of bladder injury.