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Clinical prediction rules

Peter Witters, Dominic Hughes, Palaniswamy Karthikeyan, Somashekara Ramakrishna, Mark Davenport, Anil Dhawan, Tassos Grammatikopoulos
BACKGROUND AND AIMS: Variceal haemorrhage can be a life-threatening complication of chronic liver disease in children. There is limited evidence about the optimal prophylactic management and selection criteria of children who will benefit from upper gastrointestinal endoscopy. METHODS: Children presenting in our centre with suspected portal hypertension or gastrointestinal bleeding and undergoing their first oesophagogastroduodenoscopy between 2005-2012 were included...
October 4, 2016: Journal of Pediatric Gastroenterology and Nutrition
Susanna Sainio, Kaija Javela, Jarno Tuimala, Katri Haimila
Lack of reliable laboratory parameters is the main challenge in the management of fetal and neonatal alloimmune thrombocytopenia (FNAIT). Despite the long-known association between the HLA-DRB3*01:01 allele and human platelet antigen 1a (HPA-1a) alloimmunisation, maternal human leucocyte antigen (HLA) typing has been of little clinical value. Recently, other DRB3 allele variants have been suggested to predict the severity of FNAIT. In this nationwide population-based retrospective cohort study, we performed extensive HLA typing of 96 women, accounting for 87% of our cohort of 110 families with confirmed or possible HPA-1a-immunisation...
October 17, 2016: British Journal of Haematology
Joaquín Valle Alonso, Francisco Javier Fonseca Del Pozo, Manuel Vaquero Álvarez, Elisa Lopera Lopera, Marisol Garcia Segura, Ricardo García Arévalo
BACKGROUND AND OBJECTIVE: To compare two scales for assessment of patients with mild head injury. The Canadian CT Head Rule (CCHR) and New Orleans Criteria (NOC) according to their diagnostic accuracy in patients attending an emergency department, and to determine the most important predictive values. METHOD: Cross-sectional study in a first-level Hospital in the period of January 2011 to January 2013. Patients with mild head injury criteria were included. All the patients underwent a computed tomography (CT) of the head as part of internal protocol and the CCHR and NOC criteria were recorded for each patient...
October 10, 2016: Medicina Clínica
Rafel Ramos, Xavier Albert, Joan Sala, Maria Garcia-Gil, Roberto Elosua, Jaume Marrugat, Anna Ponjoan, María Grau, Manel Morales, Antoni Rubió, Pedro Ortuño, Lia Alves-Cabratosa, Ruth Martí-Lluch
BACKGROUND: Diagnosis of unrecognized myocardial infarction (UMI) remains an open question in epidemiological and clinical studies, inhibiting effective secondary prevention of myocardial infarction. We aimed to determine the prevalence and incidence of Q-wave UMI in asymptomatic individuals aged 35 to 74years, and to ascertain the positive predictive value (PPV) of asymptomatic Q-wave to diagnose UMI. METHODS: Two population-based cross-sectional studies were conducted, in 2000 (with 10-year follow-up) and in 2005...
October 5, 2016: International Journal of Cardiology
J C Hill, E K Afolabi, M Lewis, K M Dunn, E Roddy, D A van der Windt, N E Foster
OBJECTIVES: The STarT Back Tool has good predictive performance for non-specific low back pain in primary care. We therefore aimed to investigate whether a modified STarT Back Tool predicted outcome with a broader group of musculoskeletal patients, and assessed the consequences of using existing risk-group cut-points across different pain regions. SETTING: Secondary analysis of prospective data from 2 cohorts: (1) outpatient musculoskeletal physiotherapy services (PhysioDirect trial n=1887) and (2) musculoskeletal primary-secondary care interface services (SAMBA study n=1082)...
October 14, 2016: BMJ Open
Alvin Rajkomar, Joanne Wing Lan Yim, Kevin Grumbach, Ami Parekh
BACKGROUND: Characterizing patient complexity using granular electronic health record (EHR) data regularly available to health systems is necessary to optimize primary care processes at scale. OBJECTIVE: To characterize the utilization patterns of primary care patients and create weighted panel sizes for providers based on work required to care for patients with different patterns. METHODS: We used EHR data over a 2-year period from patients empaneled to primary care clinicians in a single academic health system, including their in-person encounter history and virtual encounters such as telephonic visits, electronic messaging, and care coordination with specialists...
October 14, 2016: JMIR Medical Informatics
Emmanuelle Berthelot, David Montani, Vincent Algalarrondo, Céline Dreyfus, Raed Rifai, Anouar Benmalek, Xavier Jais, Amir Bouchachi, Laurent Savale, Gerald Simonneau, Denis Chemla, Marc Humbert, Olivier Sitbon, Patrick Assayag
BACKGROUND: Heart failure with preserved ejection fraction (HFpEF) is a frequent cause of pulmonary hypertension (PH) that is not easy to differentiate from precapillary PH. We aimed to determine whether the characteristic features of the patients may help differentiate between HFpEF and precapillary-PH. METHODS AND RESULTS: Clinical and echocardiographic parameters were analyzed in 156 patients referred to our PH referral center. Right heart catheterization identified 78 PH-HFpEF patients and 78 precapillary-PH...
October 11, 2016: Journal of Cardiac Failure
E Tan, F Lin, L Sheck, P Salmon, S Ng
PURPOSE: To derive a decision rule for predicting surgical complexity in periorbital basal cell carcinoma (pBCC). DESIGN: Prospective, cohort study. PARTICIPANTS: Patients referred to an oculoplastic service for excision of pBCC from September 2010 to November 2015 METHODS: This study was conducted at two centres in New Zealand from September 2010 to November 2015. Baseline demographic information, and an initial assessment of operative complexity (a four-point grading scale) were collected...
October 14, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
Susana Garcia-Gutierrez, José Maria Quintana, Ane Antón-Ladislao, Maria Soledad Gallardo, Esther Pulido, Irene Rilo, Elena Zubillaga, Miren Morillas, José Juan Onaindia, Nekane Murga, Ricardo Palenzuela, José González Ruiz
Our aims were to create and validate a clinical decision rule to assess severity in acute heart failure. We conducted a prospective cohort study of patients with symptoms of acute heart failure who attended the emergency departments (EDs) of three hospitals between April 2011 and April 2013. The following data were collected on arrival to or during the stay in the ED: baseline severity of symptoms; presence of decompensated comorbidities; number of hospital admissions/visits to EDs for acute heart failure during the previous 24 months; triggers of the exacerbation; clinical signs and symptoms; results of ancillary tests requested in the ED; treatments prescribed; and response to the initial treatment in the ED...
October 11, 2016: Internal and Emergency Medicine
Wen-Wai Yim, Sharon W Kwan, Meliha Yetisgen
BACKGROUND: Anaphoric references occur ubiquitously in clinical narrative text. However, the problem, still very much an open challenge, is typically less aggressively focused on in clinical text domain applications. Furthermore, existing research on reference resolution is often conducted disjointly from real-world motivating tasks. OBJECTIVE: In this paper, we present our machine-learning system that automatically performs reference resolution and a rule-based system to extract tumor characteristics, with component-based and end-to-end evaluations...
October 8, 2016: Journal of Biomedical Informatics
L M Van der Pol, A T A Mairuhu, C Tromeur, F Couturaud, M V Huisman, F A Klok
Because pregnant women have an increased risk of venous thromboembolism (VTE) and at the same time normal pregnancy is associated with symptoms, mimicking those present in the setting of acute pulmonary embolism (PE), the latter diagnosis is frequently suspected in this patient category. Since imaging tests expose both mother and foetus to ionizing radiation, the ability to rule out PE based on non-radiological diagnostic tests is of paramount importance. However, clinical decision rules have only been scarcely evaluated in the pregnant population with suspected PE, while D-dimer levels lose diagnostic accuracy due to a physiological increase during normal pregnancy...
September 29, 2016: Blood Reviews
Christophe Destrieux, Louis Marie Terrier, Frédéric Andersson, Scott A Love, Jean-Philippe Cottier, Henri Duvernoy, Stéphane Velut, Kevin Janot, Ilyess Zemmoura
The precise sulcogyral localization of cortical lesions is mandatory to improve communication between practitioners and to predict and prevent post-operative deficits. This process, which assumes a good knowledge of the cortex anatomy and a systematic analysis of images, is, nevertheless, sometimes neglected in the neurological and neurosurgical training. This didactic paper proposes a brief overview of the sulcogyral anatomy, using conventional MR-slices, and also reconstructions of the cortical surface after a more or less extended inflation process...
October 5, 2016: Brain Structure & Function
Elisa Piovano, Camilla Cavallero, Luca Fuso, Elsa Viora, Annamaria Ferrero, Gianluca Gregori, Caterina Grillo, Chiara Macchi, Giulio Mengozzi, Marco Mitidieri, Eva Pagano, Paolo Zola
BACKGROUND: Transvaginal ultrasonography (TVS) and serum biomarkers are widely used in clinical practice to triage adnexal masses, but the effectiveness of current biomarkers is quite weak. OBJECTIVES: To determine the best way to diagnose the patients with adnexal masses, in terms of diagnostic accuracy and economic costs, among four triage strategies: International Ovarian Tumor Analysis group's simple rules (SR) for the interpretation of TVS with the addition of subjective assessment (SA) by an experienced ultrasound operator only when TVS results are inconclusive (hereafter defined as SR±SA), SR±SA+CA125, SR±SA+HE4, and SR±SA+ROMA...
October 5, 2016: Ultrasound in Obstetrics & Gynecology
Jiraporn Khorana, Jayanton Patumanond, Nuthapong Ukarapol, Mongkol Laohapensang, Pannee Visrutaratna, Jesda Singhavejsakul
PURPOSE: The nonoperative reduction of intussusception in children can be performed safely if there are no contraindications. Many risk factors associated with failed reduction were defined. The aim of this study was to develop a scoring system for predicting the failure of nonoperative reduction using various determinants. PATIENTS AND METHODS: The data were collected from Chiang Mai University Hospital and Siriraj Hospital from January 2006 to December 2012. Inclusion criteria consisted of patients with intussusception aged 0-15 years with no contraindications for nonoperative reduction...
2016: Therapeutics and Clinical Risk Management
Brit Long, Alex Koyfman
BACKGROUND: Chest pain accounts for 10% of emergency department (ED) visits annually, and many of these patients are admitted because of potentially life-threatening conditions. A substantial percentage of patients with chest pain are at low risk for a major cardiac adverse event (MACE). OBJECTIVE: We investigated controversies in the evaluation of patients with low-risk chest pain, including clinical scores, decision pathways, and shared decision-making. DISCUSSION: ED patients with chest pain who have negative biomarker results and nonischemic electrocardiograms are at low risk for MACE...
September 27, 2016: Journal of Emergency Medicine
Michael J Ellis, Dean M Cordingley, Sara Vis, Karen M Reimer, Jeff Leiter, Kelly Russell
OBJECTIVE There were 2 objectives of this study. The first objective was to identify clinical variables associated with vestibulo-ocular dysfunction (VOD) detected at initial consultation among pediatric patients with acute sports-related concussion (SRC) and postconcussion syndrome (PCS). The second objective was to reexamine the prevalence of VOD in this clinical cohort and evaluate the effect of VOD on length of recovery and the development of PCS. METHODS A retrospective review was conducted for all patients with acute SRC and PCS who were evaluated at a pediatric multidisciplinary concussion program from September 2013 to May 2015...
September 30, 2016: Journal of Neurosurgery. Pediatrics
Donald A Szlosek, Jonathan Ferrett
INTRODUCTION: As the number of clinical decision support systems (CDSSs) incorporated into electronic medical records (EMRs) increases, so does the need to evaluate their effectiveness. The use of medical record review and similar manual methods for evaluating decision rules is laborious and inefficient. The authors use machine learning and Natural Language Processing (NLP) algorithms to accurately evaluate a clinical decision support rule through an EMR system, and they compare it against manual evaluation...
2016: EGEMS
Alexia Kakourou, Werner Vach, Simone Nicolardi, Yuri van der Burgt, Bart Mertens
Mass spectrometry based clinical proteomics has emerged as a powerful tool for high-throughput protein profiling and biomarker discovery. Recent improvements in mass spectrometry technology have boosted the potential of proteomic studies in biomedical research. However, the complexity of the proteomic expression introduces new statistical challenges in summarizing and analyzing the acquired data. Statistical methods for optimally processing proteomic data are currently a growing field of research. In this paper we present simple, yet appropriate methods to preprocess, summarize and analyze high-throughput MALDI-FTICR mass spectrometry data, collected in a case-control fashion, while dealing with the statistical challenges that accompany such data...
October 1, 2016: Statistical Applications in Genetics and Molecular Biology
Edelle Field-Fote, Jaynie F Yang, D Michele Basso, Monica A Gorassini
Restoration of walking ability is an area of great interest in the rehabilitation of persons with spinal cord injury. Since many cortical, subcortical, and spinal neural centers contribute to locomotor function, it is important that intervention strategies be designed to target neural elements at all levels of the neuraxis that are important for walking ability. While to date most strategies have focused on activation of spinal circuits, more recent studies are investigating the value of engaging supraspinal circuits...
September 27, 2016: Journal of Neurotrauma
Alan H Weintraub, Donald J Gerber, Robert G Kowalski
OBJECTIVE: To describe incidence, clinical characteristics, complications, and outcomes in post-traumatic hydrocephalus (PTH) following traumatic brain injury (TBI) for patients treated in an inpatient rehabilitation program. DESIGN: Cohort study with retrospective comparative analysis SETTING: Inpatient rehabilitation hospital PARTICIPANTS: All patients admitted for TBI from 2009 to 2013 diagnosed with PTH, defined as ventriculomegaly, delayed clinical recovery discordant with injury severity, hydrocephalus symptoms, or positive lumbar puncture results...
September 23, 2016: Archives of Physical Medicine and Rehabilitation
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