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Clinical decision and prediction rules

Ángel Herráiz-Adillo, Iván Cavero-Redondo, Celia Álvarez-Bueno, Johana Bidner, Vicente Martínez-Vizcaíno, Blanca Notario-Pacheco
BACKGROUND AND AIMS: The diagnostic performance of the oscillometric ankle brachial index (ABI) to detect peripheral arterial disease (PAD) varies among populations, suggesting a spectrum effect. When this heterogeneity modifies post-test probabilities, a spectrum bias arises. This study evaluates the presence and influence of spectrum effect and spectrum bias on test performance and clinical decisions. METHODS: Oscillometric and Doppler ABI were compared in two settings: Primary-Care (333 legs) and Vascular-Service (41 legs)...
March 2, 2018: Atherosclerosis
Raheleh Davoodi, Mohammad Hassan Moradi
Electronic health records (EHRs) contain critical information useful for clinical studies. Early assessment of patients' mortality in intensive care units is of great importance. In this paper, a Deep Rule-Based Fuzzy System (DRBFS) was proposed to develop an accurate in-hospital mortality prediction in the intensive care unit (ICU) patients employing a large number of input variables. Our main contribution is proposing a system, which is capable of dealing with big data with heterogeneous mixed categorical and numeric attributes...
February 19, 2018: Journal of Biomedical Informatics
Naichuan Su, Arjen J van Wijk, Corine M Visscher, Frank Lobbezoo, Geert J M G van der Heijden
OBJECTIVES: The aim was to assess the added diagnostic value of ultrasonography (US) for establishing the presence or absence of disc displacements (DDs) in temporomandibular joints (TMJs). MATERIALS AND METHODS: Pubmed and EMBASE were searched electronically to identify diagnostic accuracy studies that assessed the diagnostic value of US for the diagnosis of DD, using Magnetic resonance imaging (MRI) as the reference standard. Meta-analyses were performed with Metadisc 1...
February 17, 2018: Clinical Oral Investigations
Franz E Babl, Ed Oakley, Stuart R Dalziel, Meredith L Borland, Natalie Phillips, Amit Kochar, Sarah Dalton, John A Cheek, Yuri Gilhotra, Jeremy Furyk, Jocelyn Neutze, Susan Donath, Stephen Hearps, Charlotte Molesworth, Louise Crowe, Silvia Bressan, Mark D Lyttle
STUDY OBJECTIVE: Three clinical decision rules for head injuries in children (Pediatric Emergency Care Applied Research Network [PECARN], Canadian Assessment of Tomography for Childhood Head Injury [CATCH], and Children's Head Injury Algorithm for the Prediction of Important Clinical Events [CHALICE]) have been shown to have high performance accuracy. The utility of any of these in a particular setting depends on preexisting clinician accuracy. We therefore assess the accuracy of clinician practice in detecting clinically important traumatic brain injury...
February 13, 2018: Annals of Emergency Medicine
Lely Solari, Alonso Soto, Patrick van der Stuyft
OBJECTIVES: Diagnosis of Tuberculous Meningitis (TM) is a challenge in countries with a high burden of the disease and constrained resources and Clinical Prediction Rules (CPRs) could be of assistance. We aimed at developing a CPR for diagnosis of TM in a Latin American setting with high tuberculosis incidence and a concentrated HIV epidemic. METHODS: We enrolled adult patients with clinical suspicion of TM attending two hospitals in Lima, Peru. We obtained information on potential anamnestic, clinical and laboratory predictive findings that are easy to collect and promptly available...
February 15, 2018: Tropical Medicine & International Health: TM & IH
Chaeryon Kang, Holly Janes, Parvin Tajik, Henk Groen, Ben Mol, Corine Koopmans, Kim Broekhuijsen, Eva Zwertbroek, Maria van Pampus, Maureen Franssen
Biomarkers that predict treatment effects may be used to guide treatment decisions, thus improving patient outcomes. A meta-analysis of individual participant data (IPD) is potentially more powerful than a single-study data analysis in evaluating markers for treatment selection. Our study was motivated by the IPD that were collected from 2 randomized controlled trials of hypertension and preeclampsia among pregnant women to evaluate the effect of labor induction over expectant management of the pregnancy in preventing progression to severe maternal disease...
February 14, 2018: Statistics in Medicine
Case Newsom, Rebecca Jeanmonod, Wendy Woolley, Nirali Shah, Shellie Asher, Eric Bruno, Michael Silberman, Mark Reiter, Donald Jeanmonod
OBJECTIVES: To prospectively validate and refine previously published criteria to determine the potential utility of chest x-ray (CXR) in the evaluation and management of patients presenting to the emergency department (ED) with non-traumatic chest pain. METHODS: A prospective observational study was performed of patients presenting to three EDs in the US with a chief complaint of non-traumatic chest pain. Previously defined high-risk history and exam elements were combined into a refined decision rule and these elements were recorded for each patient by the ED physician...
February 10, 2018: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
Kelly R Reveles, Eric M Mortensen, Jim M Koeller, Kenneth A Lawson, Mary Jo V Pugh, Sarah A Rumbellow, Jacqueline R Argamany, Christopher R Frei
STUDY OBJECTIVE: Prior studies have identified risk factors for recurrent Clostridium difficile infection (CDI), but few studies have integrated these factors into a clinical prediction rule that can aid clinical decision making. The objective of this study was to derive and validate a CDI recurrence prediction rule to identify patients at risk for first recurrence in a national cohort of veterans. DESIGN: Retrospective cohort study. DATA SOURCE: Veterans Affairs Informatics and Computing Infrastructure...
February 2, 2018: Pharmacotherapy
Syed F Ali, Gordian J Hubert, Jeffrey A Switzer, Jennifer J Majersik, Roland Backhaus, L Wylie Shepard, Kishore Vedala, Lee H Schwamm
BACKGROUND AND PURPOSE: Up to 30% of acute stroke evaluations are deemed stroke mimics, and these are common in telestroke as well. We recently published a risk prediction score for use during telestroke encounters to differentiate stroke mimics from ischemic cerebrovascular disease derived and validated in the Partners TeleStroke Network. Using data from 3 distinct US and European telestroke networks, we sought to externally validate the TeleStroke Mimic (TM) score in a broader population...
March 2018: Stroke; a Journal of Cerebral Circulation
Nick van Es, Martha Louzada, Marc Carrier, Vicky Tagalakis, Peter L Gross, Sudeep Shivakumar, Marc A Rodger, Philip S Wells
BACKGROUND: The risk of recurrent venous thromboembolism (VTE) in cancer patients despite anticoagulant therapy is high. Clinical factors and pro-coagulant markers may identify high-risk patients and guide decisions about intensifying anticoagulation therapy. AIMS: To evaluate whether serial measurements of pro-coagulant markers can identify patients at high risk of recurrent VTE. METHODS: In this multicenter, prospective cohort study, patients with active cancer and acute deep vein thrombosis or pulmonary embolism were enrolled...
January 9, 2018: Thrombosis Research
Abraham N Morse, Wenyue Si, Shuang Qin, Huiying Liang
The aim of this study was to improve clinical decision-making for the identification of persistent ectopic pregnancy after linear salpingostomy. The study identified 854 laparoscopic salpingostomies performed between 2011 and 2016; 794 had a human chorionic gonadotrophin (HCG) <10 mIU/ml documented in the electronic medical record within 1 month after surgery ('successes'). Sixty (7%) received either methotrexate or repeat surgery for persistent ectopic pregnancy ('failures'). Five hundred and seventeen, including 46 'failures', had two or more immediate post-operative HCG measurements available...
March 2018: Reproductive Biomedicine Online
Christopher Kelly, Chad Agy, Margaret Carlson, Jacob Steenblik, Joseph Bledsoe, Stephen Hartsell, Troy Madsen
BACKGROUND: Pulmonary embolism (PE) clinical decision rules do not consider a patient's family history of venous thromboembolism (VTE). We evaluated whether a family history of VTE predicts acute PE in the emergency department (ED). METHODS: Over a 5.5-year study period, we enrolled a prospective convenience sample of patients presenting to an academic emergency department with chest pain and/or shortness of breath. We defined a family history of VTE as a first-degree relative with previous PE or deep vein thrombosis (DVT)...
January 6, 2018: American Journal of Emergency Medicine
Mark A Rodrigues, Neshika Samarasekera, Christine Lerpiniere, Catherine Humphreys, Mark O McCarron, Philip M White, James A R Nicoll, Cathie L M Sudlow, Charlotte Cordonnier, Joanna M Wardlaw, Colin Smith, Rustam Al-Shahi Salman
BACKGROUND: Identification of lobar spontaneous intracerebral haemorrhage associated with cerebral amyloid angiopathy (CAA) is important because it is associated with a higher risk of recurrent intracerebral haemorrhage than arteriolosclerosis-associated intracerebral haemorrhage. We aimed to develop a prediction model for the identification of CAA-associated lobar intracerebral haemorrhage using CT features and genotype. METHODS: We identified adults with first-ever intracerebral haemorrhage diagnosed by CT, who died and underwent research autopsy as part of the Lothian IntraCerebral Haemorrhage, Pathology, Imaging and Neurological Outcome (LINCHPIN) study, a prospective, population-based, inception cohort...
January 10, 2018: Lancet Neurology
L Elkrief, M Ronot, F Andrade, M Dioguardi Burgio, T Issoufaly, M Zappa, O Roux, J Bissonnette, A Payancé, D Lebrec, C Francoz, O Soubrane, D Valla, F Durand, V Vilgrain, L Castera, P-E Rautou
BACKGROUND: Two algorithms based on sequential measurements of liver and spleen stiffness using two-dimensional shearwave elastography (2D-SWE) have been recently proposed to estimate clinically significant portal hypertension (hepatic venous pressure gradient [HVPG] ≥10 mm Hg) in patients with cirrhosis, with excellent diagnostic accuracy. AIM: To validate externally these algorithms in a large cohort of patients with cirrhosis. METHODS: One hundred and ninety-one patients with stable cirrhosis (Child-Pugh class A 39%, B 29% and C 31%) who underwent liver and spleen stiffness measurements using 2D-SWE at the time of HVPG measurement were included...
January 11, 2018: Alimentary Pharmacology & Therapeutics
Susana García-Gutierrez, Miren Orive, Cristina Sarasqueta, Maria Jose Legarreta, Nerea Gonzalez, Maximino Redondo, Amado Rivero, Pedro Serrano-Aguilar, Xavier Castells, Jose Maria Quintana, Maria Sala
BACKGROUND: Though breast cancer remains a major health problem, there is a lack of information on health care provided to patients with this disease and associated costs. In addition, there is a need to update and validate risk stratification tools in Spain. Our purpose is to evaluate the health services provided for breast cancer in Spain, from screening and diagnosis to treatment and prognosis. METHODS: Prospective cohort study involving 13 hospitals in Spain with a follow-up period of up to 5 years after diagnostic biopsy...
January 8, 2018: BMC Cancer
Antonio Martinez-Millana, Jose-Luis Bayo-Monton, María Argente-Pla, Carlos Fernandez-Llatas, Juan Francisco Merino-Torres, Vicente Traver-Salcedo
Life expectancy is increasing and, so, the years that patients have to live with chronic diseases and co-morbidities. Type 2 diabetes is one of the most prevalent chronic diseases, specifically linked to being overweight and ages over sixty. Recent studies have demonstrated the effectiveness of new strategies to delay and even prevent the onset of type 2 diabetes by a combination of active and healthy lifestyle on cohorts of mid to high risk subjects. Prospective research has been driven on large groups of the population to build risk scores that aim to obtain a rule for the classification of patients according to the odds for developing the disease...
December 29, 2017: Sensors
O Herráez, M A Asencio, R Carranza, M M Jarabo, M Huertas, O Redondo, A Arias-Arias, S Jiménez-Álvarez, S Solís, P Zamarrón, M S Illescas, M A Galán
The new Sysmex UF-1000i analyzer - which incorporates bacteria morphology distinction - allows to automatically screen samples to be cultured at microbiology laboratories. We have evaluated the feasibility and accuracy of Sysmex UF-1000i to screen urinary tract infections (UTIs). A total amount of 2468 urine samples from six Spanish hospitals were analysed. Demographic and clinical data such as age, gender, source and sample type, preserving conditions, cytometer parameters (bacteria, leucocytes and bacteria morphology) as well as urine culture results (gold standard) were recorded...
March 2018: Letters in Applied Microbiology
Annelie Slaar, M M Fockens, Junfeng Wang, Mario Maas, David J Wilson, J Carel Goslings, Niels Wl Schep, Rick R van Rijn
BACKGROUND: Pediatric cervical spine injury (CSI) after blunt trauma is rare. Nonetheless, missing these injuries can have severe consequences. To prevent the overuse of radiographic imaging, two clinical decision tools have been developed: The National Emergency X-Radiography Utilization Study (NEXUS) criteria and the Canadian C-spine Rule (CCR). Both tools are proven to be accurate in deciding whether or not diagnostic imaging is needed in adults presenting for blunt trauma screening at the emergency department...
December 7, 2017: Cochrane Database of Systematic Reviews
Jacob Ortiz, Rabia Saeed, Christopher Little, Saul Schaefer
Risk assessment for pulmonary embolism (PE) currently relies on physician judgment, clinical decision rules (CDR), and D-dimer testing. There is still controversy regarding the role of D-dimer testing in low or intermediate risk patients. The objective of the study was to define the role of clinical decision rules and D-dimer testing in patients suspected of having a PE. Records of 894 patients referred for computed tomography pulmonary angiography (CTPA) at a University medical center were analyzed. The clinical decision rules overall had an ROC of approximately 0...
2017: BioMed Research International
Jackie Mclennan, Jason Smith, Kevin Mackway-Jones
BACKGROUND: The predominant cause of preventable death from trauma is bleeding. Many patients need resuscitation with massive blood transfusion (MBT). In some theatres of military operation there is limited blood product availability and walking donor panels can be required. This study aimed to produce a tool to predict the need for MBT using information available on patient arrival at the ED for patients sustaining battlefield trauma. METHODS: A retrospective database analysis was undertaken using the UK Joint Theatre Trauma Registry (JTTR) to provide derivation and validation datasets...
December 2017: Emergency Medicine Journal: EMJ
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