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https://www.readbyqxmd.com/read/28102958/sliding-window-prior-data-assisted-compressed-sensing-for-mri-tracking-of-lung-tumors
#1
Eugene Yip, Jihyun Yun, Keith Wachowicz, Zsolt Gabos, Satyapal Rathee, B G Fallone
PURPOSE: Hybrid magnetic resonance imaging and radiation therapy devices are capable of imaging in real-time to track intrafractional lung tumor motion during radiotherapy. Highly accelerated magnetic resonance (MR) imaging methods can potentially reduce system delay time and/or improves imaging spatial resolution, and provide flexibility in imaging parameters. Prior Data Assisted Compressed Sensing (PDACS) has previously been proposed as an acceleration method that combines the advantages of 2D compressed sensing and the KEYHOLE view-sharing technique...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28099256/diagnosis-of-chronic-pancreatitis-incorporating-endosonographic-features-demographics-and-behavioral-risk
#2
Linda S Lee, Ying P Tabak, Vivek Kadiyala, Xiaowu Sun, Shadeah Suleiman, Richard S Johannes, Peter A Banks, Darwin L Conwell
OBJECTIVES: Diagnosing chronic pancreatitis remains challenging. Endoscopic ultrasound (EUS) is utilized to evaluate pancreatic disease. Abnormal pancreas function test is considered the "nonhistologic" criterion standard for chronic pancreatitis. We derived a prediction model for abnormal endoscopic pancreatic function test (ePFT) by enriching EUS findings with patient demographic and pancreatitis behavioral risk characteristics. METHODS: Demographics, behavioral risk characteristics, EUS findings, and peak bicarbonate results were collected from patients evaluated for pancreatic disease...
January 18, 2017: Pancreas
https://www.readbyqxmd.com/read/28099182/reliability-of-the-revised-swiss-emergency-triage-scale-a-computer-simulation-study
#3
Olivier T Rutschmann, Olivier W Hugli, Christophe Marti, Olivier Grosgurin, Antoine Geissbuhler, Michel Kossovsky, Josette Simon, François P Sarasin
BACKGROUND: The Swiss Emergency Triage Scale (SETS) is a four-level emergency scale that previously showed moderate reliability and high rates of undertriage due to a lack of standardization. It was revised to better standardize the measurement and interpretation of vital signs during the triage process. OBJECTIVE: The aim of this study was to explore the inter-rater and test-retest reliability, and the rate of correct triage of the revised SETS. PATIENTS AND METHODS: Thirty clinical scenarios were evaluated twice at a 3-month interval using an interactive computerized triage simulator by 58 triage nurses at an urban teaching emergency department admitting 60 000 patients a year...
January 17, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/28096708/evaluating-medical-students-proficiency-with-a-handheld-ophthalmoscope-a-pilot-study
#4
Gregory Gilmour, James McKivigan
INTRODUCTION: Historically, testing medical students' skills using a handheld ophthalmoscope has been difficult to do objectively. Many programs train students using plastic models of the eye which are a very limited fidelity simulator of a real human eye. This makes it difficult to be sure that actual proficiency is attained given the differences between the various models and actual patients. The purpose of this article is to introduce a method of testing where a medical student must match a patient with his/her fundus photo, ensuring objective evaluation as well as developing skills on real patients which are more likely to transfer into clinical practice directly...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28096110/bra-sizing-and-the-plastic-surgery-herd-effect-are-breast-augmentation-patients-getting-accurate-information
#5
Christopher R Costa, Kevin H Small, William P Adams
BACKGROUND: Bra sizing is a common method to preoperatively select implants for breast augmentation; however, no series has analyzed the accuracy of this modality postoperatively. Alternatively, previous investigations have validated the accuracy and utility of three-dimensional (3D) imaging for preoperative simulation in breast augmentation. OBJECTIVES: This investigation utilizes 3D analysis to determine if preoperative bra sizing provides equivocal information compared to surgical 3D simulation for patient education and planning prior to a breast augmentation...
January 17, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28093262/the-anchor-based-minimal-important-change-mic-based-on-roc-analysis-or-predictive-modeling-may-need-to-be-adjusted-for-the-proportion-of-improved-patients
#6
Berend Terluin, Iris Eekhout, Caroline B Terwee
OBJECTIVES: Patients have their individual minimal important changes (iMICs) as their personal benchmarks to determine whether a perceived health-related quality of life (HRQOL) change constitutes a (minimally) important change for them. We denote the mean iMIC in a group of patients as the "genuine MIC" (gMIC). The aims of this paper are (1) to examine the relationship between the gMIC and the anchor-based minimal important change (MIC), determined by receiver operating characteristics (ROC) analysis or by predictive modeling; (2) to examine the impact of the proportion of improved patients on these MICs; and (3) to explore the possibility to adjust the MIC for the influence of the proportion of improved patients...
January 13, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28092968/effect-of-suture-caliber-and-number-of-core-strands-on-repair-of-acute-achilles-ruptures
#7
Jonathon D Backus, Daniel Cole Marchetti, Erik L Slette, Kimi D Dahl, Travis Lee Turnbull, Thomas O Clanton
BACKGROUND: Controversy exists regarding the ideal Achilles rupture treatment; however, operative treatment is considered for athletes and active patients. The ideal repair construct is evolving, and the effect of suture caliber or number of core strands has not been studied. METHODS: Simulated mid-substance Achilles ruptures were performed in 24 cadavers. Specimens were randomized to three 6-core-strand style repair constructs: (1) 4 No. 2 sutures and two 2-mm tapes (2T); (2) 2 No...
January 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28090108/a-process-for-curricular-improvement-based-on-evaluation-of-student-performance-on-milestone-examinations
#8
Marcy Hernick, Ann C Hylton, Michael Justice
Objective. To identify and address areas for curricular improvement by evaluating student achievement of expected learning outcomes and competencies on annual milestone examinations. Design. Students were tested each professional year with a comprehensive milestone examination designed to evaluate student achievement of learning outcomes and professional competencies using a combination of multiple-choice questions, standardized patient assessments (SPAs), and objective structured clinical examination (OSCE) questions...
November 25, 2016: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/28090102/virtual-patient-case-sharing-across-two-schools-of-pharmacy
#9
Michael A Smith, Laura A Siemianowski, Neal Benedict
Objective. To expand the use of virtual patients at 2 schools of pharmacy through virtual patient case sharing. Design. Faculty members at two schools of pharmacy collaborated to expand the use of virtual patients. Two simulation programs, vpSim and DecisionSim (Decision Simulation, LLC, Chadsford, PA), were used to create interactive patient cases for a required course and an elective course at the different schools. Each school developed cases for their own use and then shared the cases with the other school...
November 25, 2016: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/28089562/sequential-multiple-assignment-randomized-trials-an-opportunity-for-improved-design-of-stroke-reperfusion-trials
#10
William J Meurer, Nicholas J Seewald, Kelley Kidwell
BACKGROUND: Modern clinical trials in stroke reperfusion fall into 2 categories: alternative systemic pharmacological regimens to alteplase and "rescue" endovascular approaches using targeted thrombectomy devices and/or medications delivered directly for persistently occluded vessels. Clinical trials in stroke have not evaluated how initial pharmacological thrombolytic management might influence subsequent rescue strategy. A sequential multiple assignment randomized trial (SMART) is a novel trial design that can test these dynamic treatment regimens and lead to treatment guidelines that more closely mimic practice...
January 12, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28088840/evaluation-of-a-short-term-training-program-in-bedside-emergency-ultrasound-in-southwestern-tanzania
#11
Mark Shaffer, Heather A Brown, Chloé McCoy, Prosper Bashaka
OBJECTIVES: To evaluate the effect of a short-term training program in emergency ultrasound on physician skills and attitudes in southwestern Tanzania. METHODS: Eight registrar physicians at Mbeya Zonal Referral Hospital (Mbeya, Tanzania) underwent a 5-day course in bedside emergency ultrasound, focusing primarily on the focused assessment with sonography for trauma examination, including didactic sessions, practical sessions, and on-job training. The impact on ultrasound knowledge was assessed by pretest and posttest evaluations...
January 15, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28087456/phase-i-trial-of-total-marrow-and-lymphoid-irradiation-transplant-conditioning-in-patients-with-relapsed-refractory-acute-leukemia
#12
Anthony Stein, Joycelynne Palmer, Ni-Chun Tsai, Monzr M Al Malki, Ibrahim Aldoss, Haris Ali, Ahmed Aribi, Len Farol, Chatchada Karanes, Samer Khaled, An Liu, Margaret O'Donnell, Pablo Parker, Anna Pawlowska, Vinod Pullarkat, Eric Radany, Joseph Rosenthal, Firoozeh Sahebi, Amandeep Salhotra, James F Sanchez, Tim Schultheiss, Ricardo Spielberger, Sandra H Thomas, David Snyder, Ryotaro Nakamura, Guido Marcucci, Stephen J Forman, Jeffrey Wong
Current conditioning regimens provide insufficient disease control in relapsed/refractory acute leukemia (AL) patients undergoing hematopoietic stem cell transplantation (HSCT) with active disease. Intensification of chemotherapy and/or total body irradiation (TBI) is not feasible because of excessive toxicity. Total marrow and lymphoid irradiation (TMLI) allows for precise delivery and increased intensity treatment via sculpting radiation to sites with high disease burden or high risk for disease involvement, while sparing normal tissue...
January 10, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28081306/tracheal-intubation-in-patients-immobilized-by-a-rigid-collar-a-comparison-of-glidescope-and-an-intubating-laryngeal-mask-airway
#13
Semih Özdil, Zehra İpek Arslan Aydın, Zehra Nur Baykara, Kamil Toker, Zeynep Mine Solak
BACKGROUND/AIM: Intubation must be rapidly performed with the utmost care in cervical trauma patients. We present the first comparison of GlideScope and an intubating laryngeal mask airway (ILMA) regarding insertion and intubation times, intubation success rates, mucosal damage, need for optimization maneuvers, effects on hemodynamic changes, and postoperative minor complications in a simulated cervical injury with a Philadelphia cervical collar. MATERIALS AND METHODS: Ethics committee approval and patient consent were obtained and 94 American Society of Anesthesiology physical status I or II patients were enrolled in this study...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079581/assessing-the-impact-of-the-anesthesia-medication-template-on-medication-errors-during-anesthesia-a-prospective-study
#14
Eliot B Grigg, Lizabeth D Martin, Faith J Ross, Axel Roesler, Sally E Rampersad, Charles Haberkern, Daniel K W Low, Kristen Carlin, Lynn D Martin
BACKGROUND: Medication errors continue to be a significant source of patient harm in the operating room with few concrete countermeasures. The organization and identification of medication syringes may have an impact on the commission of medication errors in anesthesia, so a team of physicians and designers at the University of Washington created the Anesthesia Medication Template (AMT) to define a formal way of organizing the anesthesia workspace. The purpose of this study is to assess the ability of the AMT to reduce perioperative medication errors by anesthesia providers...
January 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28078600/net-budgetary-impact-of-ferric-citrate-as-a-first-line-phosphate-binder-for-the-treatment-of-hyperphosphatemia-a-markov-microsimulation-model
#15
Steven M Brunelli, Scott P Sibbel, David Van Wyck, Amit Sharma, Andrew Hsieh, Glenn M Chertow
Ferric citrate (FC) has demonstrated efficacy as a phosphate binder and reduces the requirements for erythropoiesis-stimulating agents (ESAs) and intravenous (IV) iron in dialysis patients. We developed a net budgetary impact model to evaluate FC vs. other phosphate binders from the vantage of a large dialysis provider. We used a Markov microsimulation model to simulate mutually referential longitudinal effects between serum phosphate and phosphate binder dose; categories of these defined health states. Health states probabilistically determined treatment attendance and utilization of ESA and IV iron...
January 11, 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28075206/hydrogel-rectum-prostate-spacers-mitigate-the-uncertainties-in-proton-relative-biological-effectiveness-associated-with-anterior-oblique-beams
#16
Tracy S A Underwood, Justin C Voog, Maryam Moteabbed, Shikui Tang, Edward Soffen, Oren Cahlon, Hsiao-Ming Lu, Anthony L Zietman, Jason A Efstathiou, Harald Paganetti
AIM: Anterior-oblique (AO) proton beams can form an attractive option for prostate patients receiving external beam radiotherapy (EBRT) as they avoid the femoral heads. For a cohort with hydrogel prostate-rectum spacers, we asked whether it was possible to generate AO proton plans robust to end-of-range elevations in linear energy transfer (LET) and modeled relative biological effectiveness (RBE). Additionally we considered how rectal spacers influenced planned dose distributions for AO and standard bilateral (SB) proton beams versus intensity-modulated radiotherapy (IMRT)...
January 11, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28075182/dispersing-the-mists-an-experimental-history-of-medicine-study-into-the-quality-of-volatile-inhalations
#17
Barry Murnane, Cathal T Gallagher, Noel Snell, Mark Sanders, Ramin Moshksar, Darragh Murnane
BACKGROUND: Dr. Nelson's Improved Inhaler was first marketed with an advertisement in The Lancet in 1865. Revolutionary at the time for its ease of use and patient-friendliness, the inhaler is still in use for self-treatment by many all over the world. On the occasion of its 150th anniversary, this study reports an experimental historical medicine approach to identify evidence for the quality of vapor inhalers. METHODS: Through accessing reviews of the device's use by the contemporary medical establishment, it was established that Dr...
January 11, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28072872/population-pharmacokinetic-properties-of-piperaquine-in-falciparum-malaria-an-individual-participant-data-meta-analysis
#18
Richard M Hoglund, Lesley Workman, Michael D Edstein, Nguyen Xuan Thanh, Nguyen Ngoc Quang, Issaka Zongo, Jean Bosco Ouedraogo, Steffen Borrmann, Leah Mwai, Christian Nsanzabana, Ric N Price, Prabin Dahal, Nancy C Sambol, Sunil Parikh, Francois Nosten, Elizabeth A Ashley, Aung Pyae Phyo, Khin Maung Lwin, Rose McGready, Nicholas P J Day, Philippe J Guerin, Nicholas J White, Karen I Barnes, Joel Tarning
BACKGROUND: Artemisinin-based combination therapies (ACTs) are the mainstay of the current treatment of uncomplicated Plasmodium falciparum malaria, but ACT resistance is spreading across Southeast Asia. Dihydroartemisinin-piperaquine is one of the five ACTs currently recommended by the World Health Organization. Previous studies suggest that young children (<5 y) with malaria are under-dosed. This study utilised a population-based pharmacokinetic approach to optimise the antimalarial treatment regimen for piperaquine...
January 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28072693/comparative-evaluation-of-target-volumes-defined-by-deformable-and-rigid-registration-of-diagnostic-pet-ct-to-planning-ct-in-primary-esophageal-cancer
#19
Yanluan Guo, Jianbin Li, Peng Zhang, Qian Shao, Min Xu, Yankang Li
BACKGROUND: To evaluate the geometrical differences of target volumes propagated by deformable image registration (DIR) and rigid image registration (RIR) to assist target volume delineation between diagnostic Positron emission tomography/computed tomography (PET/CT) and planning CT for primary esophageal cancer (EC). METHODS: Twenty-five patients with EC sequentially underwent a diagnostic F-fluorodeoxyglucose (F-FDG) PET/CT scan and planning CT simulation. Only 19 patients with maximum standardized uptake value (SUVmax) ≥ 2...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28070000/anesthesia-technique-and-outcomes-of-mechanical-thrombectomy-in-patients-with-acute-ischemic-stroke
#20
Kimon Bekelis, Symeon Missios, Todd A MacKenzie, Stavropoula Tjoumakaris, Pascal Jabbour
BACKGROUND AND PURPOSE: The impact of anesthesia technique on the outcomes of mechanical thrombectomy for acute ischemic stroke remains an issue of debate. We investigated the association of general anesthesia with outcomes in patients undergoing mechanical thrombectomy for ischemic stroke. METHODS: We performed a cohort study involving patients undergoing mechanical thrombectomy for ischemic stroke from 2009 to 2013, who were registered in the New York Statewide Planning and Research Cooperative System database...
January 9, 2017: Stroke; a Journal of Cerebral Circulation
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