Establishment of Standards for the Referral of Large Non-Pedunculated Colorectal Polyps: An International Expert Consensus Using a Modified Delphi Process

BACKGROUND AND AIMS

Resection of colorectal polyps has been shown to decrease the incidence and mortality of colorectal cancer. Large non-pedunculated colorectal polyps are often referred to expert centres for endoscopic resection, which requires relevant information to be conveyed to the therapeutic endoscopist to allow for triage and planning of resection technique. The primary objective of our study was to establish minimum expected standards for the referral of LNPCP for potential ER.

METHODS

A Delphi methodology was employed to establish consensus on minimum expected standards for the referral of large colorectal polyps among a panel of international endoscopy experts. The expert panel was recruited through purposive sampling, and three rounds of surveys were conducted to achieve consensus, with quantitative and qualitative data analysed for each round.

RESULTS

A total of 24 international experts from diverse continents participated in the Delphi study, resulting in consensus on 19 statements related to the referral of large colorectal polyps. The identified factors, including patient demographics, relevant medications, lesion factors, photodocumentation and the presence of a tattoo, were deemed important for conveying the necessary information to therapeutic endoscopists. The mean scores for the statements ranged from 7.04 to 9.29 out of 10, with high percentages of experts considering most statements as a very high priority. Subgroup analysis by continent revealed some variations in consensus rates among experts from different regions.

CONCLUSION

The identified consensus statements can aid in improving the triage and planning of resection techniques for large colorectal polyps, ultimately contributing to the reduction of colorectal cancer incidence and mortality.

The impact of COVID-19 restrictions on acute hospital presentations due to alcohol-related harm in Waitematā Auckland, New Zealand

AIMS

New Zealand's public health response to the COVID-19 pandemic has largely been considered successful, although there have been concerns surrounding the potential harms of the lockdown restrictions enforced, including alteration of alcohol consumption. New Zealand utilised a four-tiered alert level system of lockdowns and restrictions, with Level 4 denoting strict lockdown. This study aimed to compare alcohol-related hospital presentations during these periods with corresponding calendar-matched dates from the preceding year.

METHODS

We conducted a retrospective case-controlled analysis of all alcohol-related hospital presentations between 1 January 2019 to 2 December 2021 and compared COVID-19 restriction periods to corresponding calendar-matched pre-pandemic periods.

RESULTS

A total of 3,722 and 3,479 alcohol-related acute hospital presentations occurred during the four COVID-19 restriction levels and corresponding control periods respectively. Alcohol-related presentations accounted for a greater proportion of all admissions during COVID-19 Alert Levels 3 and 1 than the respective control periods (both p⁢0.05), but not during Levels 4 and 2 (both p>0.30). Acute mental and behavioural disorders accounted for a greater proportion of alcohol-related presentations during Alert Levels 4 and 3 (both p≤0.02), although alcohol dependence was present in a lower proportion of presentations during Alert Levels 4, 3, and 2 (all p⁢0.01). There was no difference in acute medical conditions including hepatitis and pancreatitis during all alert levels (all p>0.05).

CONCLUSION

Alcohol-related presentations were unchanged compared to matched control periods during the strictest level of lockdown, although acute mental and behavioural disorders accounted for a greater proportion of alcohol-related admissions during this period. New Zealand appears to have avoided the general trend of increased alcohol-related harms seen internationally during the COVID-19 pandemic and its lockdown restrictions.

Biomarkers in the early prediction of rescue therapy in acute severe colitis-a single-centre retrospective study

Nil.

Bleeding risk of oral anticoagulants in liver cirrhosis

AIM

The safety of dabigatran is poorly studied in patients with liver cirrhosis and has rarely been compared to warfarin in terms of bleeding risks.

METHOD

We undertook a retrospective cohort study across three tertiary centres in Auckland, New Zealand, between 2008 to 2020. Adults 18 years and over and those with a clinically confirmed diagnosis of cirrhosis were included. Data collected included demographic data and clinical characteristics, baseline medication and comorbidities. The primary outcome measure was the incidence of any bleeding event that resulted in hospital admission.

RESULTS

Overall, 100 patients were included in this study. A total of 52 patients took warfarin, and 48 took dabigatran. Baseline characteristics for both groups were generally similar. The incidence rate of bleeds for patients taking warfarin was 14.4 per 100 person-years (95% CI, 8.8-23.5) compared to 9.1 per 100 person-years (95% CI, 4.5-18.1) for patients taking dabigatran. The incidence rate ratio comparing dabigatran to warfarin was 0.63 (95% CI, 0.23-1.60), p=0.25.

CONCLUSION

Our study found that patients on dabigatran may have a lower bleeding risk than patients taking warfarin, but this was not statistically significant.

Artificial intelligence improves adenoma detection rate during colonoscopy

BACKGROUND

Artificial intelligence-assisted colonoscopy (AIAC) has gained attention as a tool to assist with polyp detection during colonoscopy. Uncertainty remains as to the clinical benefit, given limited publications using different modules.

METHOD

A single-centre retrospective study was performed at Waitematā Endoscopy, a private endoscopy centre in Auckland, New Zealand. An Olympus Endo-AID module was utilised for the first time by 13 experienced endoscopists. Outcomes from AIAC between 10 March 2021 to 23 April 2021 were compared to a subsequent non-AI conventional colonoscopy (CC) control group from 27/4/21 to 20/6/21.

RESULTS

A total of 213 AIACs were compared with 213 CCs. Baseline patient age, gender, indication for procedure, bowel preparation scores and specialty of proceduralist (gastroenterologist or surgeon) were well matched (p>0.05). The withdrawal time was significantly longer in the AIAC group compared to CC controls (15 vs 13 minutes; p<0.001). The adenoma detection rate (ADR) was significantly higher in the AIAC group compared to CC group (47.9% vs 38.5%; odds ratio 1.59; 95% CI [1.05-2.41]; p=0.03). The overall polyp detection rate (PDR) was similar between groups (70% vs 70%; p=0.79). Analysis by polyp size, location and other histology was not significant between groups.

CONCLUSION

AI-assisted colonoscopy significantly improved ADR compared with conventional colonoscopy. Further research is required to understand its utility and impact on long-term clinical outcomes.

The role of a novel self-expanding metal stent in variceal bleeding: a multicenter Australian and New Zealand experience

Background and study aims  Refractory variceal bleeding is associated with high mortality in patients with chronic liver disease. A fully-covered self-expanding metal stent (SEMS) has been reported to have excellent rates of technical success and initial bleeding control; however, studies to date are small and limited to Europe and Asia. Our aim was to evaluate the efficacy and safety of this SEMS for control of refractory variceal bleeding (VB). Patients and methods  A retrospective analysis was undertaken of all patients who received the SX-ELLA Danis SEMS for management of VB at 9 tertiary centers across Australia and New Zealand. A total of 32 SEMS had been deployed in 30 patients (median age 53.3). Results  Technical success of SEMS placement was achieved in 100 % of cases, resulting in immediate control of bleeding across 31 of 32 cases (96.9 %). Re-bleeding with SEMS in situ occurred in three of 32 cases (9.4 %). Mean SEMS in-dwelling time was 6.4 days. Delayed SEMS migration occurred in 6.3 % of cases. Interventional radiological therapy for management of varices within 6 weeks was performed in 12 of 30 patients (40 %). Death with SEMS in situ occurred in seven of 30 patients (23.3 %). Seven-day bleeding-related mortality was 16.7 %, 14-day mortality 23.3 %, and 6-week mortality 33.3 %. Three of 30 patients (10 %) received orthotopic liver transplantation following SEMS insertion, including two patients within 6 weeks. Conclusions  SX-Danis Ella SEMS is highly effective for immediate control of refractory VB and bridging to definitive therapy because it has excellent technical success rates, appears to be relatively easy to use, and has low rates of serious adverse events.

Quality of life after oesophageal stenting in patients with palliative oesophageal cancer

AIM

Patients with incurable oesophageal cancer have poor outcomes, with disabling symptoms and a poor quality of life (QOL), which may be improved by oesophageal stenting. We aimed to measure change in symptoms related specifically to oesophageal cancer and overall QOL before and 30 days after stent insertion, to measure adverse effects and to define any patient factors that may be significant in predicting patients who may benefit most.

METHODS

We prospectively enrolled patients in an observational study at Middlemore Hospital, New Zealand, and administered validated QOL- and symptomatology-based questionnaires before and 30 days after stent insertion. Additional patient-related demographics, procedural characteristics, adverse events and outcomes were collected.

RESULTS

Between 31 March 2014 and 3 July 2020, 57 patients were initially recruited. Four patients withdrew from the study, and 13 patients died before 30 days. Forty patients (29 males; mean±SD age, 72±12 years) completed the study. A significant improvement was noted at one-month post stent insertion in the overall global QOL score (mean 35 to 46, p=0.01). The most significant score improvements were seen in dysphagia, trouble eating, trouble swallowing saliva and dry mouth (p<0.001). Physical, emotional, cognitive and social functioning did not change. Post-procedural adverse events occurred in 17 patients (43%). A poorer initial level of functioning was associated with reduced improvement in global QOL (p≤0.04). Patients followed-up died a mean of 2.8 months after insertion.

CONCLUSION

In patients surviving longer than 30 days, there is significant improvement of overall QOL and dysphagia one-month post oesophageal stent insertion for malignant, palliative dysphagia. Multiple psychosocial facets were unchanged with this intervention. Stent-related adverse events were common.

A comparison of intravenous methylprednisolone and hydrocortisone for the treatment of acute inflammatory bowel disease

BACKGROUND AND AIM

Despite widespread recommendations and use of intravenous corticosteroids (IVCS) for the treatment of acute flares of ulcerative colitis and Crohn's disease, limited evidence exists comparing outcomes of the two most common regimens, intravenous methylprednisolone (IVMP) and intravenous hydrocortisone (IVHC). IVHC has stronger mineralocorticoid effects compared with IVMP and may cause higher rates of hypokalemia. We aimed to determine differences in clinical outcomes including requirement for inpatient rescue therapy, bowel resection, and rates of hypokalemia.

METHODS

We conducted a multicenter cohort study of all adult patients admitted with an acute flare of inflammatory bowel disease (IBD) to the three tertiary hospitals in Auckland, New Zealand, where the protocol at each institution is either IVMP 60 mg daily or IVHC 100 mg four times daily. All patients requiring IVCS between 20 June 2016 and 30 June 2018 were included. The IVCS protocol was then changed at one hospital, where further data were collected for a further 12 months from 30 January 2019 until 30 December 2019.

RESULTS

There were 359 patients, including 129 (35.9%) patients receiving IVMP and 230 (64.1%) patients receiving IVHC. IVMP treatment was associated with a greater requirement for rescue therapy than IVHC (36.4% vs 19.6%, P = 0.001; odds ratio [OR] = 2.79; 95% confidence interval [CI], 1.64-4.75, P < 0.001), but also reduced rates of hypokalemia (55.8% vs 67.0%, P = 0.04; OR = 0.49; 95% CI, 0.30-0.81, P = 0.005). There was no difference between treatment groups for the median length of admission (5 days, interquartile range [IQR] 3-8), median duration of IVCS treatment (3 days, IQR 2-5), or bowel resection within 30 days of admission (12.4% vs 11.7%; OR = 1.04).

CONCLUSION

For the treatment of an acute flare of IBD, treatment with IVMP results in significantly more requirement for inpatient rescue biologic or cyclosporin. In addition, it causes statistically significant less hypokalemia than IVHC, although in practice differences are negligible.

Outcomes Of Patients with Delayed Surveillance Colonoscopy

BACKGROUND

Surveillance colonoscopy has been shown to be an effective tool for prevention of CRC in high-risk populations, if adhered to. We aimed to discover the sequelae of late surveillance in a cohort of patient's overdue for colonoscopy, in particular the development of colorectal cancer (CRC) or advanced adenoma (AA) within surveillance subgroups.

METHOD

We conducted a retrospective cohort study on all patients from the Bay of Plenty District Health Board region, New Zealand, placed on the colonoscopy surveillance waitlist from 2006 onwards who had their procedure completed between 1 November 2016 and 31 January 2018, when the total surveillance list was declared up-to-date. Patients with overdue surveillance, defined as done later than 90 days after the recommended due date were compared to patients who were done either early, or on time.

RESULTS

786 patients were recorded as overdue for surveillance colonoscopy, and 386 were completed early or on time. The median time overdue was 22 months. Three cases (0.4%) of CRC were found in overdue patients compared to 4 cases (1%) for those done on time (adjusted p=0.24). There were 86 (11%) AA in patient's overdue compared to 27 (7%) in those not overdue (odds ratio (OR) 1.6, 95% confidence interval (CI) [1.0,2.5], p=0.04). Overdue status increased the expected risk of AA by approximately 60% (adjusted; 95% CI [1%,253%], p=0.04) or 19% per year overdue (95% CI [7%,32%], p=0.002). Surveillance of 248 low-risk post-polypectomy patients demonstrated 26/211 with AA in overdue patients compared to 2/37 (12.3% vs 5.4%, unadjusted p=0.23) for those done on time. Surveillance of 180 high-risk post-polypectomy patients identified 2 CRC's and 8/43 AA in those overdue, as compared to no CRC and 9/137 AA (18.6% vs 6.6%, OR 1.79 (95% CI [1.07,2.0], unadjusted p=0.03) in those done on time.

CONCLUSION

Whilst overdue surveillance is not predictive of increased CRC, it is associated with an increase in expected number of AA, particularly in patients having surveillance for previous high-risk polypectomy. This article is protected by copyright. All rights reserved.

Increasing burden of advanced hepatocellular carcinoma in New Zealand-the need for better surveillance

BACKGROUND

Regular surveillance for hepatocellular carcinoma (HCC) in patients with chronic hepatitis B viral (HBV) infection and hepatitis C (HCV) cirrhosis improves survival by earlier detection of the cancer at an earlier stage when curative intervention may still be possible. We compared patient characteristics, surveillance history and outcomes in patients presenting with advanced HCC secondary to HBV and HCV.

METHOD

In this retrospective study, clinical databases and notes were reviewed in all cases of advanced HCC related to HBV or HCV referred to the tertiary HCC service in Auckland, New Zealand between 1 January 2003 and 31 December 2017.

RESULTS

Over the 15-year period, 368 patients were referred with advanced HCC secondary to HBV (HBV-HCC) and 278 secondary to HCV (HCV-HCC), representing over 50% of all cases of HCC cases secondary to viral hepatitis. Of these 646 patients with advanced HCC, 75% of patients were not receiving guideline-recommended surveillance. More patients with advanced HBV-HCC were diagnosed with HCC prior to the diagnosis of HBV, compared to patients with advanced HCV-HCC (40% vs 28%, p<0.01). Fewer patients with previously diagnosed HBV infection were undergoing HCC surveillance than patients with previously diagnosed HCV infection (26% vs 42%, p<0.01). Late diagnosed patients had the worst outcomes, with 88% receiving palliative care and surviving on average only seven months (HBV five months vs HCV eight months, p=0.05).

CONCLUSION

Survival in New Zealanders with hepatocellular carcinoma remains poor because the cancer is incurable in most patients at the time of detection. Because most cases are secondary to chronic hepatitis B and C infections, improved screening and linkage to antiviral therapy and HCC surveillance should improve outcomes.

Prophylactic salpingectomy for prevention of ovarian cancer at the time of elective laparoscopic cholecystectomy

Background

Most serous ovarian cancers are now understood to originate in the fallopian tubes. Removing the tubes (salpingectomy) likely reduces the risk of developing high‐grade serous ovarian cancer. Numerous gynaecological societies now recommend prophylactic (or opportunistic) salpingectomy at the time of gynaecological surgery in appropriate women, and this is widely done. Salpingectomy at the time of non‐gynaecological surgery has not been explored and may present an opportunity for primary prevention of ovarian cancer.

Methods

This study investigated whether prophylactic salpingectomy with the intention of reducing the risk of developing ovarian cancer would be accepted and could be accomplished at the time of elective laparoscopic cholecystectomy. Women aged at least 45 years scheduled for elective laparoscopic cholecystectomy were recruited. They were counselled and offered prophylactic bilateral salpingectomy at the time of cholecystectomy. Outcome measures were rate of accomplishment of salpingectomy, time and procedural steps needed for salpingectomy, and complications.

Results

A total of 105 patients were included in the study. The rate of acceptance of salpingectomy was approximately 60 per cent. Salpingectomy was performed in 98 of 105 laparoscopic cholecystectomies (93·3 per cent) and not accomplished because of poor visibility or adhesions in seven (6·7 per cent). Median additional operating time was 13 (range 4–45) min. There were no complications attributable to salpingectomy. One patient presented with ovarian cancer 28 months after prophylactic salpingectomy; histological re‐evaluation of the tubes showed a previously undetected, focal serous tubal intraepithelial carcinoma.

Conclusion

Prophylactic salpingectomy can be done during elective laparoscopic cholecystectomy.

Surveillance factors change outcomes in patients with hepatocellular carcinoma due to chronic hepatitis C virus infection in New Zealand

Although surveillance for Hepatocellular Carcinoma (HCC) with 6 monthly imaging is recommended for patients with cirrhosis secondary to chronic hepatitis C virus (HCV) infection, international studies report poor adherence and there is paucity of data on its effect on patient outcomes. The primary aim of this study was to review cases of HCC secondary to HCV to determine the impact of adherence with HCC surveillance on survival. A total of 520 patients with confirmed HCC secondary to chronic HCV from 31 January 2001 to 31 May 2018 were identified from a prospective national HCC database. Computerized clinical records, general practitioner referral letters and secondary care clinic letters were subsequently retrospectively analysed for methods of HCC detection. HCC was detected through routine surveillance in only 224 patients (44%). HCC was detected either incidentally or following the onset of symptoms in nonadherent (12%), suboptimal surveyed (3%), undiagnosed cirrhotic (12%) or recently diagnosed HCV patients (21%) or were never offered surveillance (2%). Routine surveillance improved overall survival, OR 0.41 (95% CI [0.32, 0.53], P < .0001), with an overall mean survival of 91.5 months (95% CI 76.4, 106.6) compared to 43.0 (95% CI 34.2, 51.9) for those patients not receiving regular surveillance Outcome following diagnosis of HCC secondary to chronic HCV is determined by early detection when curative intervention is possible. Lack of diagnosis of HCV and nonadherence to HCC surveillance results in late diagnosis and poor outcomes. Under-diagnosis of HCV infection and lack of diagnosis of cirrhosis in patients known to have HCV infection reduce the benefit of current HCC surveillance strategies.

Differing protocols of managing adult diabetic ketoacidosis outside of the intensive care unit make no difference to the rate of resolution of hyperglycaemia and acidosis

AIMS

To compare the outcome of people with type 1 diabetes admitted to the general ward with diabetic ketoacidosis (DKA) to two hospitals in Auckland, using different protocols of care.

METHODS

North Shore Hospital uses a UK weight-based, ketone centric protocol while Auckland Hospital uses a protocol based on glucose measurements only. All notes of people over 16 years of age admitted to the general wards with DKA to these hospitals in one year were reviewed and their outcome compared.

RESULTS

Forty-one admissions in 35 people with DKA at Auckland Hospital were compared to 30 admissions in 26 people with DKA at North Shore Hospital. The degree of ketoacidosis and hyperglycaemia on admission was similar at the two hospitals. The duration of insulin and 10% dextrose infusions was similar but the total number of units of insulin infused and rate of dextrose given per hour were higher at North Shore, with similar rates of hypokalaemia and hypoglycaemic events at each site. The rate of resolution of hyperglycaemia and acidosis did not differ. The length of stay of patients was similar at the two hospitals.

CONCLUSIONS

The frequent measurement of bedside ketones did not result in more rapid resolution of DKA compared to relying on glucose measurements alone.

Video or verbal? A randomised trial of the informed consent process prior to endoscopy

AIM

Informed consent (IC) prior to endoscopy is often inconsistently and poorly performed. We compared use of video-assisted consent to standard verbal consent for enhancing patients' recollection of procedural risks, understanding and fulfilment of expectation.

METHOD

Two hundred patients attending for gastroscopy or colonoscopy were randomised to either video-assisted consent (n=100) or verbal consent (n=100). The primary outcomes measured via a questionnaire were the recollection of procedural risks (sum of all correct answers for risk recall items) and patient experience compared to information provided in the consent process. Secondary outcomes included reported patient understanding and staff satisfaction between groups.

RESULTS

There was no difference between video or verbal groups in terms of risk recall scores (p=0.46), with less than half the patients able to recall more than two risks. There was a signal towards improved recall of bleeding as a potential risk in the video as compared to the verbal arm but it did not reach statistical significance (p=0.059). Patients' perceived understanding and fulfilment of expectation was high (>96%) in both groups. Seventy-one percent of the staff preferred using the video over the verbal IC.

CONCLUSION

Video-assisted consent made no significant difference to the IC process in terms of patient recollection or experience compared to usual verbal IC. Despite very poor recollection of procedural risks, patients in both the video and verbal groups reported understanding of the procedure and satisfaction with the IC process. Reasons for this mismatch are unclear. Further action to prioritise information delivery during IC is required. Future studies in this field should include patient-centred outcomes as a measure of success.

Chromoendoscopy versus standard colonoscopy for detection of nonpolypoid dysplasia in patients with inflammatory bowel disease

AIM

Inflammatory bowel disease (IBD) is associated with an increased risk of colorectal cancer. Studies show that chromoendoscopy (CE) can increase the detection of dysplasia at surveillance colonoscopy, compared to standard white light endoscopy (WLE). We performed a retrospective cohort study to compare standard WLE to CE with targeted biopsies in detecting nonpolypoid dysplasia in IBD patients undergoing surveillance colonoscopy at a single tertiary centre.

METHOD

Data was collected on 110 consecutive patients with IBD who underwent surveillance colonoscopy from 1 August 2015 to 31 July 2017 at Counties Manukau District Health Board, Auckland. Patients had either WLE or CE. Patient characteristics, endoscopic and histologic descriptions were reviewed. Rates of dysplasia detection by the different endoscopic techniques were compared using an exact Poisson test.

RESULTS

76/110 (69%) had WLE (mean age 56y; median disease duration 18y) and 34/110 (31%) had CE (median age 59y; median disease duration 19y). Nonpolypoid dysplasia was detected in 0/76 (0%) patients who had WLE. Seven nonpolypoid dysplastic lesions were detected in 4/34 (11.8%) patients who had CE. Dysplasia pick up rate was significantly higher in the CE group with a risk difference of 11.8%, 95% confidence interval (0.93, 22.59), p=0.008. Dysplasia detection rate per patient was also significantly higher in the CE group with a rate difference of 20.6 lesions per 100 patients, 95% confidence interval (5.3, 35.8), p=0.0003. As expected, there was no difference between the number of polypoid dysplastic lesions found between the two groups (p=0.12).

CONCLUSION

In our cohort of IBD patients undergoing surveillance colonoscopy, CE with targeted biopsy is associated with a significantly increased nonpolypoid dysplasia detection rate when compared to WLE. These results are comparable to studies performed in the rest of the world.

Re-examining physical findings with point-of-care ultrasound: a narrative review

The art of physical examination has continued to be practised by physicians largely unchanged for over 200 years. Ultrasound, once the domain of the radiologist, is now being increasingly used by emergency physicians and intensivists to make rapid, accurate diagnoses at the point-of-care. We review the growing body of evidence supporting point-of-care ultrasound (PoCUS) as the preferred alternative to many aspects of the cardiovascular, respiratory, abdominal and neurological examinations in internal medicine. Compared with physical examination, PoCUS may increase diagnostic accuracy and patient satisfaction; reduce unnecessary investigations and healthcare costs; be shared with experts for a second opinion; and have automated decision-support applied to improve diagnosis. Further research is needed to identify the ideal combination of physical and PoCUS techniques to establish a gold-standard 'hybrid' approach to bedside assessment.

A prognostic nomogram to predict overall survival in patients with platinum-sensitive recurrent ovarian cancer

BACKGROUND

Patients with platinum-sensitive recurrent ovarian cancer have variable prognosis and survival. We extend previous work on prediction of progression-free survival by developing a nomogram to predict overall survival (OS) in these patients treated with platinum-based chemotherapy.

PATIENTS AND METHODS

The nomogram was developed using data from the CAELYX in Platinum-Sensitive Ovarian Patients (CALYPSO) trial. Multivariate proportional hazards models were generated based on pre-treatment characteristics to develop a nomogram that classifies patient prognosis based on OS outcome. We also developed two simpler models with fewer variables and conducted model validations in independent datasets from AGO-OVAR Study 2.5 and ICON 4. We compare the performance of the nomogram with the simpler models by examining the differences in the C-statistics and net reclassification index (NRI).

RESULTS

The nomogram included six significant predictors: interval from last platinum chemotherapy, performance status, size of the largest tumour, CA-125, haemoglobin and the number of organ sites of metastasis (C-statistic 0.67; 95% confidence interval 0.65-0.69). Among the CALPYSO patients, the median OS for good, intermediate and poor prognosis groups was 56.2, 31.0 and 20.8 months, respectively. When CA-125 was not included in the model, the C-statistics were 0.65 (CALYPSO) and 0.64 (AGO-OVAR 2.5). A simpler model (interval from last platinum chemotherapy, performance status and CA-125) produced a significant decrease of the C-statistic (0.63) and NRI (26.4%, P < 0.0001).

CONCLUSIONS

This nomogram with six pre-treatment characteristics improves OS prediction in patients with platinum-sensitive ovarian cancer and is superior to models with fewer prognostic factors or platinum chemotherapy free interval alone. With independent validation, this nomogram could potentially be useful for improved stratification of patients in clinical trials and also for counselling patients.

Methods of tophus assessment in clinical trials of chronic gout: a systematic literature review and pictorial reference guide

Objective

To identify methods of tophus measurement for gout studies, summarise the properties of these methods and compile a detailed pictorial reference guide to demonstrate the methods.

Methods

A systematic search strategy for methods of tophus measurement was formulated. For each method, papers were assessed by two reviewers to summarise information according to the specific components of the Outcomes Measures in Rheumatology (OMERACT) filter: feasibility, truth and discrimination. Detailed images were obtained to construct the reference guide.

Results

Eight methods of tophus measurement were identified: counting the total number of tophi, physical measurement using tape measure, physical measurement using Vernier callipers, digital photography, ultrasonography (US), MRI, CT and dual energy CT. Feasibility aspects of the methods are well documented. Physical measurement techniques are more feasible than advanced imaging methods, but do not allow for assessment of intra-articular tophi or for data storage and central reading. The truth aspect of the filter has been documented for many methods, particularly Vernier callipers, US, MRI and CT. Reliability of most methods has been reported as very good or excellent. Sensitivity to change has been reported for all methods except MRI and CT.

Conclusion

A variety of methods of tophus assessment have been described for use in clinical trials of chronic gout. Physical measurement techniques (particularly the Vernier calliper method) and US measurement of tophus size appear to meet most aspects of the OMERACT filter.

The time of diagnosis impacts surgical management but not the outcome of patients with gallbladder carcinoma

Background

Only 50% of gallbladder cancers (GBC) are recognized before operation and the remaining tumors are diagnosed during surgery or afterwards by the pathologist. These situations may demand substantial modifications of the proceeding during surgery as well as the need for reoperation in some cases. Therefore, the time of diagnosis may strongly influence the surgical management of GBC and the prognosis of the patients.

Methods

Records and follow-up of 152 patients with gallbladder carcinoma who underwent surgery between 1980 and 2004 were examined according to the time of diagnosis, TNM staging system, surgical procedures, morbidity and predictors of survival. There were 76 patients with preoperative diagnosis of GBC (50%; group1), 44 patients with intraoperative diagnosis (29%; group 2) and 32 patients (21%; group 3) with postoperatively incidental finding of GBC. In all cases radical resection of the GBC was intended, except in 5 patients from group 1. Surgical procedures comprised from simple cholecystectomy to multivisceral resections.

Results

Overall 5-year survival rate was 7% with a significantly better median survival in group 3 (53.2 month), when compared to only 6.1 month (group 2) and 5.4 month (group 1), respectively. Findings at operation forced significant modifications of the surgical strategy in 85%. Complete resection of GBC was achieved in 38% of the patients. Stage- dependent survival was comparable between the groups following R0 resection. Tumor stage, in particular the nodal status and radicality of the procedure, but not the time of diagnosis were the most powerful predictors of outcome.

Conclusions

Complete tumor resection may provide long-term survival even in locally advanced GBC. Although the time of diagnosis of GBC causes significant changes of the intended procedures during and after surgery, it has no influence on the prognosis provided that radical (R0) resection was accomplished.

Micronutrients (including zinc) reduce diarrhoea in children: the Pakistan Sprinkles Diarrhoea Study

AIMS

To examine the effect of the daily use of micronutrients (including zinc) or the same micronutrients plus heat inactivated lactic acid bacteria (LAB), on diarrhoea in children compared to placebo.

METHODS

A triple blind randomised clinical trial in an urban slum of Karachi, Pakistan. Micronutrients (including zinc), micronutrients (including zinc and LAB), or placebo, were provided daily for two months to 75 young children (aged 6-12 months) identified at high risk for diarrhoea related mortality on the basis of history of at least one episode of diarrhoea in the preceding two weeks. The longitudinal prevalence of diarrhoea was defined as the percentage of days a child had diarrhoea out of the days the child was observed.

RESULTS

Mean longitudinal prevalence of diarrhoea in the micronutrient-zinc group was 15% (SD = 10%) child-days compared to 26% (SD = 20%) child-days in the placebo group and 26% (SD = 19%) child-days in the micronutrient-zinc-LAB group. The difference between the micronutrient-zinc-LAB and placebo groups was not significant.

CONCLUSION

The daily provision of micronutrients (including zinc) reduces the longitudinal prevalence of diarrhoea and thus may also reduce diarrhoea related mortality in young children; heat inactivated LAB has negative effects in these children.

A spike-based model of binaural sound localization

This paper describes a spike-based model of binaural sound localization using interaural time differences (ITDs). To handle the problem of temporal coding and to facilitate a hardware implementation all neurons are simulated by a spike response model, which includes postsynaptic potentials (PSPs) and a refractory period. A winner-take-all (WTA) network selects the dominant source from the representation of the sound's angles of incidences, and can be biased by a multisensory support. We use simulations on real audio data to investigate the function and the practical application of the system.

Special report: protection and advocacy: what nurses need to know

There is a national system of protection and advocacy programs for people with mental illness, developmental disabilities, and other disabilities. These programs investigate allegations of abuse and neglect and pursue legal, administrative, and other appropriate remedies to protect the rights of individuals with disabilities. Nurses have a critical role in advocating and protecting rights of consumers with psychiatric disabilities and identifying and reporting incidents of abuse and neglect. The unique role of the nurse within practice, research and education regarding protection and advocacy is discussed.

Laparoscopic partial splenic resection

Twenty domestic pigs with an average weight of 30 kg were subjected to laparoscopic partial splenic resection with the aim of determining the feasibility, reliability, and safety of this procedure. Unlike the human spleen, the pig spleen is perpendicular to the body's long axis, and it is long and slender. The parenchyma was severed through the middle third, where the organ is thickest. An 18-mm trocar with a 60-mm Endopath linear cutter was used for the resection. The tissue was removed with a 33-mm trocar. The operation was successfully concluded in all animals. No capsule tears occurred as a result of applying the stapler. Optimal hemostasis was achieved on the resected edges in all animals. Although these findings cannot be extended to human surgery without reservations, we suggest that diagnostic partial resection and minor cyst resections are ideal initial indications for this minimally invasive approach.

Laparoscopic removal of a large laparotomy pad forgotten in situ

Objects forgotten during surgery are still an important complication with ethical and forensic implications. This case report describes a splenectomized patient with type II Hodgkin's disease. A large laparotomy pad (68 x 48 cm) forgotten in situ during a staging operation 6 months previously was removed laparoscopically. In asplenic patients with a permanent immune deficiency it is especially advantageous to perform surgery via the "closed" route whenever possible.