bluuebunny/crossref_metadata_2025_split huggingface dataset:
Potentially inappropriate prescribing (PIP) in long-term care (LTC) patients: validation of the 2014 STOPP-START and 2012 Beers criteria in a LTC population—a protocol for a cross-sectional comparison of clinical and health administrative data
Authors: Bjerre Lise M , Halil Roland , Catley Christina , Farrell Barbara , Hogel Matthew , Black Cody D , Williams Margo , Ryan Cristín , Manuel Douglas G 
Published: October 2015

IntroductionPotentially inappropriate prescribing (PIP) is frequent and problematic in older patients. Identifying PIP is necessary to improve prescribing quality; ideally, this should be performed at the population level. Screening Tool of Older Persons’ potentially inappropriate Prescriptions/Screening Tool to Alert doctors to Right Treatment (STOPP/START) and Beers criteria were developed to identify PIP in clinical settings and are useful at the individual patient level; however, they are time-consuming and costly to apply. Only a subset of these criteria is applicable to routinely collected population-level health administrative data (HAD) because the clinical information necessary to implement these tools is often missing from databases. The performance of subsets of STOPP/START and Beers criteria in HAD compared with clinical data from the same patients is unknown; furthermore, the performance of the updated 2014 STOPP-START and 2012 Beers criteria compared with one another is also unknown.Methods and analysisA cross-sectional study of linked HAD and clinical data will be conducted to validate the subsets of STOPP/START and Beers criteria applicable to HAD by comparing their performance when applied to clinical and HAD for the same patients. Eligible patients will be 66 years and over and recently admitted to 1 of 6 long-term care facilities in Ottawa, Ontario. The target sample size is 275, but may be less if statistical significance can be achieved sooner. Medication, diagnostic and clinical data will be collected by a consultant pharmacist. The main outcome measure is the proportion of PIP missed by the subset of STOPP/START and Beers criteria applied to HAD when compared with clinical data.Ethics and disseminationThe study was approved by the Ottawa Health Services Network Research Ethics Board, the Bruyère Continuing Care Research Ethics Board and the ethics board of the City of Ottawa Long Term Care Homes. Dissemination will occur via publication, national and international conference presentations, and exchanges with regional, provincial and national stakeholders.Trial registration numberNCT02523482.
A mixed-methods investigation of health professionals’ perceptions of a physiological track and trigger system
Authors: Lydon Sinéad , Byrne Dara , Offiah Gozie , Gleeson Louise , O'Connor Paul 
Published: October 2015

BackgroundPhysiological track and trigger systems (PTTSs) regulate the monitoring of patients’ vital signs and facilitate the detection and treatment of deteriorating patients. These systems are widely used, although compliance with protocol is often poor.ObjectiveThis study aimed to examine the perceptions of a national PTTS among nurses and doctors and to identify the variables that impact on intention to comply with protocol.MethodsA mixed-methods research design was employed. During the initial qualitative phase, 30 hospital-based nurses and doctors participated in a series of semistructured interviews. During the subsequent quantitative phase, 215 nurses and doctors (24.1% response rate) responded to a questionnaire designed to assess attitudes towards the PTTS and factors that influence adherence to protocol.ResultsInterview data revealed largely positive attitudes towards the PTTS but highlighted a number of barriers to its implementation and indicated that it is sometimes a source of tension between doctors and nurses. Quantitative data confirmed the validity of these findings, although nurses appeared to have more positive attitudes towards, and to perceive fewer barriers to, the usage of PTTS than were reported by the participating doctors.ConclusionsThese findings reveal that non-compliance with PTTS protocol is unlikely to be attributable to negative perceptions of PTTSs. Instead, there are a number of barriers to the implementation of the system. These findings suggest that interprofessional training in PTTSs is essential while increased support for PTTS implementation among senior doctors would also yield improved adherence to protocol.
The financial impact of a nurse-led telemedicine service for inflammatory bowel disease in a large district general hospital
Authors: Squires Seth Ian , Boal Allan John , Naismith Graham Douglas 
Published: October 2015

IntroductionIt has become increasingly recognised that outpatient management is more cost-effective in inflammatory bowel disease (IBD). IBD Standards (Revised 2013) recommend telephone advice for patients with regard to symptoms and medication management. This report attempts to quantify the net financial impact of this service at our hospital since it was introduced in August 2013.MethodThe Royal Alexandra Hospital in Paisley (National Health Service, Greater Glasgow and Clyde) is a district general hospital with a catchment population of 200 000 with approximately 2500 patients with IBD. Data relating to the use of the IBD telemedicine service were prospectively recorded on a daily basis for a period of 5 months. We documented reasons for calling and the likely action taken by the patient had the telephone advice line not been available. Cost savings based on alternative outcomes were made in accordance with the Department of Health figures (Department of Health reference costs 2011–2012).ResultsThe mean number of calls per month was 88 (IQR 24)—(the mean number of calls which were deemed non-IBD issues was 30 calls per month (IQR 8.0)) The mean cost of staffing the IBD advice line with an IBD clinical nurse specialist was £482.00 per month (IQR 195.5). The mean time spent on calls per month was 28.5 h (IQR 11.5). Cost savings over 5 months for avoidance of general practitioner (GP) consultation was £3408.00. Savings for avoidance of a consultant appointment made over the 5-month period was £27 454.00. Savings made from patients avoiding either an accident and emergency (A&E) or a hospital admission were £540.00 and £11 488.00, respectively, over the 5-month period. The net saving was £42 890.00.ConclusionsA nurse-led telephone advice line appears to be a cost-effective intervention. It may prevent patients from unnecessary hospital attendance. Savings can be made to both primary care and secondary care. Overall, it appears that the advice line is providing a highly valuable service not just in terms of accessible treatment decisions and guidance for patients, but cost savings when IBD clinic nurse specialist time is compared with that of GPs, consultants or hospital facilities.
National survey of B1 and B2 reporting of breast needle core biopsies
Authors: Deb Rahul , Jenkins Jacquie A , Rowlands David , Ellis Ian O , Lee Andrew HS 
Published: October 2015

AimThis survey investigated the variation in the use of the breast core biopsy categories B1 normal and B2 benign.MethodA survey with case scenarios was circulated to 701 breast pathologists in the UK.ResultsThe response rate was 40%. If there was concordance between the radiological and histological findings, then there was a clear consensus on the appropriate B category. However, if there was discordance between the radiological and histological findings, then frequently there was poor agreement on the appropriate category. Analysis of these cases and supplementary questions on the criteria used to make a pathological categorisation showed that some pathologists are influenced by the radiological features or by the multidisciplinary discussion, rather than just using the histological features.ConclusionsThis survey shows that pathologists frequently do not follow the National Health Service breast screening guideline that B categories should be based solely on the histological changes.
Compaction of flow diverters improves occlusion of experimental wide-necked aneurysms
Authors: Gentric Jean-Christophe , Salazkin Igor , Gevry Guylaine , Raymond Jean , Darsaut Tim 
Published: October 2015

IntroductionFlow diverters (FDs) are increasingly used in the treatment of wide-necked aneurysms.ObjectiveTo examine the hypothesis that intentional FD compaction might improve aneurysm occlusion rates.MethodsBilateral wide-necked carotid aneurysms were created in 12 dogs. Endovascular treatment was performed 1 month later, using Pipeline embolization devices deployed with compaction across the aneurysm neck (n=12). Group 1a consisted of aneurysms treated with a single compacted FD (n=8), while group 1b aneurysms required two compacted FDs (n=4). Control aneurysms were treated with a single non-compacted FD (group 3; n=6), or not treated (group 4; n=4). Angiographic results were compared at 3 months. Pathology specimens were photographed and the neointimal coverage of devices scored using an ordinal grading system.ResultsTwenty-two of 24 aneurysms were patent at 1 month. Deployment with compaction was successful in eight cases (group 1a aneurysms). The compaction maneuver led to immediate FD prolapse into the aneurysm in four cases, rescued by deploying a second, telescoping FD (forming group 1b aneurysms). One compacted device later migrated distally, leaving the aneurysm untreated. Angiographic results differed significantly between groups (p=0.0002). At 3 months, aneurysms successfully treated with a single compacted FD were more often occluded at 3 months (7/7) than aneurysms flow-diverted without compaction (2/6; p=0.021). All aneurysms treated with two compacted FDs were occluded, while all untreated aneurysms remained patent. There were no parent vessel stenoses.ConclusionsCompaction of FDs can improve angiographic occlusion of experimental wide-necked aneurysms.
Carotid artery stenting for vulnerable plaques on MR angiography and ultrasonography: utility of dual protection and blood aspiration method
Authors: Sakamoto Shigeyuki , Kiura Yoshihiro , Okazaki Takahito , Shinagawa Katsuhiro , Ishii Daizo , Ichinose Nobuhiko , Kurisu Kaoru 
Published: October 2015

BackgroundCarotid artery stenting (CAS) for internal carotid artery (ICA) stenosis with vulnerable plaques is controversial. We analyzed the effect of a dual protection and blood aspiration method during CAS in patients with vulnerable plaques.MethodsA total of 111 patients with ICA stenosis underwent CAS using the dual protection (simultaneous flow reversal and distal filter) and blood aspiration method. In 103 of 111 patients, preoperative carotid plaque was estimated by both 3 T MRI and ultrasonography (US). ICA plaques with a high intensity signal on time-of-flight-MR angiography (TOF-MRA) and/or mobile component on US were defined as vulnerable plaques. We assessed major adverse events (MAE) (ie, major stroke, myocardial infarction, and death) and hyperintense spots on diffusion-weighted images (DWI) after CAS. We then evaluated the visible debris captured by dual protection and blood aspiration during CAS.ResultsThe preoperative ICA plaque on TOF-MRA and US was judged to be vulnerable in 48.5% (50/103 patients). The success rate of the CAS procedure was 100% with no MAE within 30 days. DWI showed small hyperintense spots in 18% (9/50 patients) and 18.9% (10/53 patients) in the vulnerable and non-vulnerable plaque groups, respectively. Visible debris was captured in 68% (34/50 patients) and 45.3% (24/53 patients) in the vulnerable and non-vulnerable plaque groups, respectively (p=0.0286).ConclusionsThe combination of dual protection and blood aspiration could provide effective distal embolic protection although vulnerable plaques on TOF-MRA and US had a high incidence of debris during CAS. Thus, CAS using dual protection and blood aspiration is safe in patients with vulnerable plaques.
Results of comprehensive diagnostic work-up in ‘idiopathic’ dilated cardiomyopathy
Authors: Broch Kaspar , Andreassen Arne K , Hopp Einar , Leren Trond P , Scott Helge , Müller Fredrik , Aakhus Svend , Gullestad Lars 
Published: October 2015

ObjectiveDilated cardiomyopathy (DCM) is characterised by left ventricular dilation and dysfunction not caused by coronary disease, valvular disease or hypertension. Owing to the considerable aetiological and prognostic heterogeneity in DCM, an extensive diagnostic work-up is recommended. We aimed to assess the value of diagnostic testing beyond careful physical examination, blood tests, echocardiography and coronary angiography.MethodsFrom October 2008 to November 2012, we prospectively recruited 102 patients referred to our tertiary care hospital with a diagnosis of ‘idiopathic’ DCM based on patient history, physical examination, routine blood tests, echocardiography and coronary angiography. Extended work-up included cardiac MRI, exercise testing, right-sided catheterisation with biopsies, 24 h ECG and genetic testing.ResultsIn 15 patients (15%), a diagnosis other than ‘idiopathic’ DCM was made based on additional tests. In 10 patients (10%), a possibly disease-causing mutation was detected. 2 patients were found to have non-compaction cardiomyopathy based on MRI findings; 2 patients had systemic inflammatory disease with cardiac involvement; and in 1 patient, cardiac amyloidosis was diagnosed by endomyocardial biopsy. Only in 5 cases did the results of the extended work-up have direct therapeutic consequences.ConclusionsIn patients with DCM, in whom patient history and routine work-up carry no clues to the aetiology, the diagnostic and therapeutic yield of extensive additional testing is modest.
Current management of diabetes mellitus and future directions in care
Authors: Chatterjee Sudesna , Davies Melanie J 
Published: October 2015

ABSTRACT
The last 90 years have seen considerable advances in the management of type 1 and type 2 diabetes. Prof MacLean of Guy’s Hospital wrote in the Postgraduate Medical Journal in 1926 about the numerous challenges that faced patients and their healthcare professionals in delivering safe and effective diabetes care at that time. The discovery of insulin in 1922 heralded a new age in enabling long-term glycaemic control, which reduced morbidity and mortality. Thirty years later, the first oral agents for diabetes, the biguanides and sulfonylureas, appeared and freed type 2 patients from having to inject insulin following diagnosis. Improvements in insulin formulations over the decades, including rapid-acting and long-acting insulin analogues that more closely mimic physiological insulin secretion, have increased the flexibility and efficacy of type 1 diabetes management. The last two decades have seen major advances in technology, which has manifested in more accurate glucose monitoring systems and insulin delivery devices (‘insulin pump’). Increased understanding of the pathophysiological deficits underlying type 2 diabetes has led to the development of targeted therapeutic approaches such as on the small intestine (glucagon-like peptide-1 receptor analogues and dipeptidyl-peptidase IV inhibitors) and kidneys (sodium-glucose cotransporter-2 inhibitors). A patient-centred approach delivered by a multidisciplinary team is now advocated. Glycaemic targets are set according to individual circumstances, taking into account factors such as weight, hypoglycaemia risk and patient preference. Stepwise treatment guidelines devised by international diabetes organisations standardise and rationalise management. Structured education programmes and psychological support are now well-established as essential for improving patient motivation and self-empowerment. Large multicentre randomised trials have confirmed the effectiveness of intensive glycaemic control on microvascular outcomes, but macrovascular outcomes and cardiovascular safety remain controversial with several glucose-lowering agents. Future directions in diabetes care include strategies such as the ‘bionic pancreas’, stem cell therapy and targeting the intestinal microbiome. All of these treatments are still being refined, and it may be several decades before they are clinically useful. Prevention and cure of diabetes is the Holy Grail but remain elusive due to lack of detailed understanding of the metabolic, genetic and immunological causes that underpin diabetes. Much progress has been made since the time of Prof MacLean 90 years ago, but there are still great strides to be taken before the life of the patient with diabetes improves even more significantly.
Defining a New Prognostic Index for Stage I Nonseminomatous Germ Cell Tumors Using CXCL12 Expression and Proportion of Embryonal Carcinoma
Authors: Gilbert Duncan C. , Al-Saadi Reem , Thway Khin , Chandler Ian , Berney Daniel , Gabe Rhian , Stenning Sally P. , Sweet Joan , Huddart Robert , Shipley Janet M. 
Published: October 2015

Abstract
Purpose: Up to 50% of patients diagnosed with stage I nonseminomatous germ cell tumors (NSGCTs) harbor occult metastases. Patients are managed by surveillance with chemotherapy at relapse or adjuvant treatment up front. Late toxicities from chemotherapy are increasingly recognized. Based on a potential biologic role in germ cells/tumors and pilot data, our aim was to evaluate tumor expression of the chemokine CXCL12 alongside previously proposed markers as clinically useful biomarkers of relapse.
Experimental Design: Immunohistochemistry for tumor expression of CXCL12 was assessed as a biomarker of relapse alongside vascular invasion, histology (percentage embryonal carcinoma), and MIB1 staining for proliferation in formalin-fixed paraffin-embedded orchidectomy samples from patients enrolled in the Medical Research Council's TE08/22 prospective trials of surveillance in stage I NSGCTs.
Results: TE08/TE22 trial patients had a 76.4% 2-year relapse-free rate, and both CXCL12 expression and percentage embryonal carcinoma provided prognostic value independently of vascular invasion (stratified log rank test P = 0.006 for both). There was no additional prognostic value for MIB1 staining. A model using CXCL12, percentage embryonal carcinoma, and VI defines three prognostic groups that were independently validated.
Conclusions: CXCL12 and percentage embryonal carcinoma both stratify patients' relapse risk over and above vascular invasion alone. This is anticipated to improve the stratification of patients and identify high-risk cases to be considered for adjuvant therapy. Clin Cancer Res; 22(5); 1265–73. ©2015 AACR.
RAD51 and BRCA2 Enhance Oncolytic Adenovirus Type 5 Activity in Ovarian Cancer
Authors: Tookman Laura A. , Browne Ashley K. , Connell Claire M. , Bridge Gemma , Ingemarsdotter Carin K. , Dowson Suzanne , Shibata Atsushi , Lockley Michelle , Martin Sarah A. , McNeish Iain A. 
Published: October 2015

Abstract
Homologous recombination (HR) function is critically important in high-grade serous ovarian cancer (HGSOC). HGSOC with intact HR has a worse prognosis and is less likely to respond to platinum chemotherapy and PARP inhibitors. Oncolytic adenovirus, a novel therapy for human malignancies, stimulates a potent DNA damage response that influences overall antitumor activity. Here, the importance of HR was investigated by determining the efficacy of adenovirus type 5 (Ad5) vectors in ovarian cancer. Using matched BRCA2-mutant and wild-type HGSOC cells, it was demonstrated that intact HR function promotes viral DNA replication and augments overall efficacy, without influencing viral DNA processing. These data were confirmed in a wider panel of HR competent and defective ovarian cancer lines. Mechanistically, both BRCA2 and RAD51 localize to viral replication centers within the infected cell nucleus and that RAD51 localization occurs independently of BRCA2. In addition, a direct interaction was identified between RAD51 and adenovirus E2 DNA binding protein. Finally, using functional assays of HR competence, despite inducing degradation of MRE11, Ad5 infection does not alter cellular ability to repair DNA double-strand break damage via HR. These data reveal that Ad5 redistributes critical HR components to viral replication centers and enhances cytotoxicity.
Implications: Oncolytic adenoviral therapy may be most clinically relevant in tumors with intact HR function. Mol Cancer Res; 14(1); 44–55. ©2015 AACR.
Predicting the Presence of an Acute Coronary Lesion Among Patients Resuscitated From Cardiac Arrest
Authors: Waldo Stephen W. , Chang Lee , Strom Jordan B. , O’Brien Cashel , Pomerantsev Eugene , Yeh Robert W. 
Published: October 2015

Background—
A mechanism to stratify patients resuscitated from a cardiac arrest according to the likelihood of an acute coronary lesion would have significant utility. We thus sought to develop and validate a risk prediction model for the presence of an acute coronary lesion among patients resuscitated from an arrest.

Methods and Results—

All subjects undergoing coronary angiography after resuscitation from a cardiac arrest were identified in an ongoing institutional registry from 2009 to 2014. Backwards stepwise selection of candidate covariates was used to create a logistic regression model for the presence of an angiographic culprit lesion and internally validated with bootstrapping. A clinical point score was generated and its prognostic abilities compared with contemporary measures. Among 247 subjects undergoing coronary angiography after resuscitation from a cardiac arrest, 130 (52%) had an acute lesion in a coronary artery. A multivariable model—including angina, congestive heart failure symptoms, shockable arrest rhythm (ventricular fibrillation/ventricular tachycardia), and ST-elevations—had excellent discrimination (optimism corrected C-Statistic, 0.88) and calibration (Hosmer–Lemeshow
P
=0.540) for an acute coronary lesion. Compared with electrocardiographic findings alone, a point score based on this model more accurately predicted the presence of an acute lesion among patients resuscitated from a cardiac arrest (integrated discrimination improvement, 0.10; 95% confidence interval, 0.04–0.19;
P
<0.001).

Conclusions—
Patients with a cardiac arrest can be risk stratified for the presence of an acute coronary lesion using 4 easily measured variables. This simple risk score may be used to improve patient selection for emergent coronary angiography among resuscitated patients.