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1031 citation(s) found for "Xu, Clark".

Thyroid fine‐needle aspiration cytology: Performance data of neoplastic and malignant cases as identified from 1558 responses in the ASCP Non‐GYN Assessment program thyroid fine‐needle performance data
Eilers, Stan G., LaPolice, Paula, Mukunyadzi, Perkins , Kapur, Umesh, Spiczka, Amy Wendel, Saleh, Husain A., Nunez, Amberly L., Balachandran, Indra, Clark, Jennifer , Lemon, Larry, Eilers, Stanley G., Shah, Ajay M. , Adeniran, Adebowale

Cancer Cytopathology | June 9, 2014 | Volume: 122 | Issue: 10 | Pages: 745-750

10.1002/cncy.21440 | PMID 24913410 Get It

BACKGROUNDFine‐needle aspiration of the thyroid is a common procedure, with an established role in reducing unnecessary thyroid surgery and identifying neoplasms and malignancies.METHODSThe study evaluated 1558 responses in the American Society for Clinical Pathology (ASCP) Non‐GYN Assessment program of aspirates of thyroid neoplasms and malignancies and placed them into the following groups: group A (target or correct interpretation), group B (incorrect interpretation as a benign thyroid nodule), group C (incorrect interpretation malignant aspirate as thyroid neoplasm), and group D (malignant diagnosis with incorrect interpretation). In clinical practice, responses in groups A, C, and D would lead to surgical excision, whereas responses in group B would not.RESULTSOf a total of 1558 responses, 78.5% of the responses were in group A, 8.5% in group B, 3.75% in group C, and 9.25% in group D. By individual diagnosis, the group rates were 86.5%, 0%, 11%, and 2.5% for anaplastic thyroid carcinoma; 83%, 5.5%, 4.25%, and 7.25% for papillary thyroid carcinoma; 79%, 7%, 6%, and 8% for medullary thyroid carcinoma; 83.5% 6.75%, 0%, and 9.75% for Hürthle cell neoplasm; and 61%, 22%, 0%, and 17% for follicular neoplasm in groups A, B, C, and D respectively.CONCLUSIONSFine‐needle aspiration was effective in diagnosing thyroid neoplasms and malignancies and in separating thyroid nodules into surgical and nonsurgical categories. Data from a large group of cytology professionals showed good performance; however, there is room for improvement, especially in making specific diagnoses. In particular, follicular neoplasm and follicular variant of papillary thyroid carcinoma were challenging diagnoses for participants. Cancer (Cancer Cytopathol) 2014;122:745–750. © 2014 The Authors. Cancer Cytopathology published by Wiley Periodicals, Inc. on behalf of American Cancer Society.
Calcitonin gene‐related peptide and vascular endothelial growth factor are expressed in lesional but not uninvolved skin in chronic spontaneous urticaria
Kay, A.B., Ying, S., Ardelean, E., Młynek, A., Kita, Hirohito , Maurer, Marcus , Ying, S., Clark, Patricia M. , Kita, H

Clinical & Experimental Allergy | June 5, 2014 | Volume: 44 | Issue: 8 | Pages: 1053-1060

10.1111/cea.12348 | PMID 24902612 Get It

Summary Background The mechanisms for producing weals in chronic spontaneous (idiopathic) urticaria (CSU) are incompletely understood. Leucocyte infiltration with vascular leakage and expression of the potent vasoactive agents' calcitonin gene‐related peptide ( CGRP ) and vascular endothelial growth factor ( VEGF ) are features of late‐phase allergic skin reactions, previously proposed as a model of CSU . Objective To measure CGRP and VEGF expression in lesional and non‐lesional skin from CSU patients and to compare results with a control group. Methods Eight paired biopsies (one from 4–8 h spontaneous weals and one from uninvolved skin) were taken from eight patients with CSU and nine control subjects and studied by immunohistochemistry and confocal microscopy. Results Lesional skin in CSU contained significantly more CGRP + and VEGF + cells than non‐lesional skin. No significant differences were observed in CGRP and VEGF expression between non‐lesional skin and controls. In lesional skin, VEGF and CGRP co‐localised to UEA‐1+ blood vessels. CGRP was also expressed by neutrophils and eosinophils and to a lesser extent by CD90 + fibroblasts, mast cells, CD 3 + and CD 68 + cells. CGRP and VEGF expression was not related to the duration of disease. Conclusion and Clinical Relevance Increased expression of CGRP and VEGF in lesional, but not uninvolved, skin indicates that these potent vasoactive agents may play a role in wealing and tissue oedema in CSU so representing novel targets in therapy.
Process Mapping and RFID
Clark, David Allen, Pasupathy, Kalyan S.

Encyclopedia of Business Analytics and Optimization | May 14, 2014 | Volume: No volume available | Issue: No issue available | Pages: 1898-1909

10.4018/978-1-4666-5202-6.ch170 Get It

Healthcare processes have variability embedded within care delivery systems. Process mapping has been traditionally used to study processes, and is based on human perceptions of how the process is structured and how care is delivered. Process mapping can be biased based on individual perceptions and not comprehensive to capture variability. Radio frequency identification (RFID) provides a more objective means for collecting process-related data. This paper discusses process mapping, its benefits and drawbacks, and how RFID can complement process mapping. Qualitative information (process mapping) and quantitative information (data collected using RFID and from other sources) can potentially be combined to develop process models. Such models can inform process improvement and increase safety and efficiency.
Increasing Visibility through Process Mining
Clark, David Allen, Pasupathy, Kalyan S.

Encyclopedia of Business Analytics and Optimization | May 14, 2014 | Volume: No volume available | Issue: No issue available | Pages: 1192-1202

10.4018/978-1-4666-5202-6.ch110 Get It

Healthcare processes have variability embedded within care delivery systems. Healthcare providers and managers need visibility of the process to understand variability, and make process design changes, to improve safety and efficiency. Process mapping has been traditionally used to study processes, and is based on perceptions. However, to better understand and manage variability, there is an urgent need for process mining techniques. Process mining requires data for validation, to increase understanding and/or change perceptions and improve visibility. Radio frequency identification (RFID) can be used for collecting process-related data and can eliminate data quality issues. This paper discusses process mining and its application in healthcare, summarizes process mapping and RFID, and proposes an integration framework and method to improve visibility.
Stroke After Aortic Valve Surgery
Messé, Steven R. , Acker, Michael A., Fanning, Molly, Giovannetti, Tania , Ratcliffe, Sarah J. , Bilello, Michel , Szeto, Wilson Y. , Bavaria, Joseph E. , Hargrove, W. Clark , Mohler, Emile R., Floyd, Thomas F. , include, The Determining Neurologic Outcomes from Valve Operations (DeNOVO) investigators, Giovanetti, Tania, Matthai, William , Morris, Rohinton J., Pochettino, Alberto , Price, Catherine C. , Selnes, Ola A., Woo, Y. Joseph , Augostides, John G., Cheung, Albert T., Hanson, C. William , Kukafka, Jeremy D., Levy, Warren J., Mickler, Thomas, Milas, Bonnie L., Savino, Joseph S., Vernick, William J., Weiss, Stuart J., Kasner, Scott Eric , include, The Determining Neurologic Outcomes from Valve Operations (DeNOVO) investigators, Desai, Nimesh D. , Horák, Jiří , Kohl, Benjamin

Circulation | April 2, 2014 | Volume: 129 | Issue: 22 | Pages: 2253-2261

10.1161/circulationaha.113.005084 | PMID 24690611 Get It

Background— The incidence and impact of clinical stroke and silent radiographic cerebral infarction complicating open surgical aortic valve replacement (AVR) are poorly characterized. Methods and Results— We performed a prospective cohort study of subjects ≥65 years of age who were undergoing AVR for calcific aortic stenosis. Subjects were evaluated by neurologists preoperatively and postoperatively and underwent postoperative magnetic resonance imaging. Over a 4-year period, 196 subjects were enrolled at 2 sites (mean age, 75.8±6.2 years; 36% women; 6% nonwhite). Clinical strokes were detected in 17%, transient ischemic attack in 2%, and in-hospital mortality was 5%. The frequency of stroke in the Society for Thoracic Surgery database in this cohort was 7%. Most strokes were mild; the median National Institutes of Health Stroke Scale was 3 (interquartile range, 1–9). Clinical stroke was associated with increased length of stay (median, 12 versus 10 days; P =0.02). Moderate or severe stroke (National Institutes of Health Stroke Scale ≥10) occurred in 8 (4%) and was strongly associated with in-hospital mortality (38% versus 4%; P =0.005). Of the 109 stroke-free subjects with postoperative magnetic resonance imaging, silent infarct was identified in 59 (54%). Silent infarct was not associated with in-hospital mortality or increased length of stay. Conclusions— Clinical stroke after AVR was more common than reported previously, more than double for this same cohort in the Society for Thoracic Surgery database, and silent cerebral infarctions were detected in more than half of the patients undergoing AVR. Clinical stroke complicating AVR is associated with increased length of stay and mortality.
A transgenic zebrafish model for monitoring glucocorticoid receptor activity
Krug, Randall G. , Poshusta, Tanya L., Skuster, Kimberly J., Berg, Martina, Gardner, Sandra , Clark, Karl J. , Clark, Karl J

Genes, Brain and Behavior | March 28, 2014 | Volume: 13 | Issue: 5 | Pages: 478-487

10.1111/gbb.12135 | PMID 24679220 Get It

AbstractGene regulation resulting from glucocorticoid receptor and glucocorticoid response element interactions is a hallmark feature of stress response signaling. Imbalanced glucocorticoid production and glucocorticoid receptor activity have been linked to socioeconomically crippling neuropsychiatric disorders, and accordingly there is a need to developin vivomodels to help understand disease progression and management. Therefore, we developed the transgenicSR4Gzebrafish reporter line with six glucocorticoid response elements used to promote expression of a short half‐life green fluorescent protein following glucocorticoid receptor activation. Herein, we document the ability of this reporter line to respond to both chronic and acute exogenous glucocorticoid treatment. The green fluorescent protein expression in response to transgene activation was high in a variety of tissues including the brain, and provided single‐cell resolution in the effected regions. The specificity of these responses is demonstrated using the partial agonist mifepristone and mutation of the glucocorticoid receptor. Importantly, the reporter line also modeled the temporal dynamics of endogenous stress response signaling, including the increased production of the glucocorticoid cortisol following hyperosmotic stress and the fluctuations of basal cortisol concentrations with the circadian rhythm. Taken together, these results characterize our newly developed reporter line for elucidating environmental or genetic modifiers of stress response signaling, which may provide insights to the neuronal mechanisms underlying neuropsychiatric disorders such as major depressive disorder.
Elevations in vascular markers and eosinophils in chronic spontaneous urticarial weals with low‐level persistence in uninvolved skin
Kay, A B , Ying, S., Ardelean, E., Młynek, A., Kita, Hirohito , Maurer, Marcus , Ying, S., Clark, Patricia M. , Kita, H

British Journal of Dermatology | March 26, 2014 | Volume: 171 | Issue: 3 | Pages: 505-511

10.1111/bjd.12991 | PMID 24665899 Get It

Satisfaction With Work-Life Balance and the Career and Retirement Plans of US Oncologists
Raymond, Marilyn, Kosty, Michael P., Satele, Daniel , Horn, Leora , Pippen, John , Chu, Quyen D. , Chew, Helen K. , Clark, William B., Hanley, Amy, Sloan, Jeff A. , Gradishar, William J. , Shanafelt, Tait D.

Journal of Clinical Oncology | March 11, 2014 | Volume: 32 | Issue: 11 | Pages: 1127-1135

10.1200/jco.2013.53.4560 | PMID 24616305 Get It

Purpose To evaluate satisfaction with work-life balance (WLB) and career plans of US oncologists. Methods The American Society of Clinical Oncology conducted a survey of US oncologists evaluating satisfaction with WLB and career plans between October 2012 and March 2013. The sample included equal numbers of men and women from all career stages. Results Of 2,998 oncologists contacted, 1,490 (49.7%) returned surveys. From 1,117 oncologists (37.3% of overall sample) completing full-length surveys, we evaluated satisfaction with WLB and career plans among the 1,058 who were not yet retired. The proportion of oncologists satisfied with WLB (n = 345; 33.4%) ranked lower than that reported for all other medical specialties in a recent national study. Regarding career plans, 270 oncologists (26.5%) reported a moderate or higher likelihood of reducing their clinical work hours in the next 12 months, 351 (34.3%) indicated a moderate or higher likelihood of leaving their current position within 24 months, and 273 (28.5%) planned to retire before 65 years of age. Multivariable analyses found women oncologists (odds ratio [OR], 0.458; P < .001) and those who devoted greater time to patient care (OR for each additional hour, 0.977; P < .001) were less likely to be satisfied with WLB. Satisfaction with WLB and burnout were the strongest predictors of intent to reduce clinical work hours and leave current position on multivariable analysis. Conclusion Satisfaction with WLB among US oncologists seems lower than for other medical specialties. Dissatisfaction with WLB shows a strong relationship with plans to reduce hours and leave current practice. Given the pending US oncologist shortage, additional studies exploring interactions among WLB, burnout, and career satisfaction and their impact on career and retirement plans are warranted.
Volumes of Discrete Sips From Straws of Varying Internal Diameters
Anderson, Caroline C., Hietpas, Fletcher, Clark, Heather M.

American Journal of Speech-Language Pathology | February 6, 2014 | Volume: 23 | Issue: 1 | Pages: 84-89

10.1044/1058-0360(2013/13-0032) | PMID 24097796 Get It

Purpose In this study, the authors examined mean volumes of discrete sips performed by healthy adults from straws varying in internal diameter. Method Forty healthy adults sipped water from each of 7 straws varying in internal diameter (0.65–5.00 mm). Bolus volumes associated with 3 discrete sips were recorded under each sip condition. Results Straw diameter had a significant effect on bolus size, with the smallest diameter straws eliciting the smallest bolus volumes. Bolus volumes did not vary according to age or sex. Considerable intersubject variation was observed, particularly for the straws with the largest diameters. Intrasubject variability across 3 trials was minimal. Conclusions The findings support the hypothesis that narrower straw diameters are associated with smaller bolus volumes in healthy adults. Additional study is needed to determine whether individuals with dysphagia demonstrate similar patterns of bolus size associated with straws varying in internal diameter and whether such variations have clinical benefit.
Burnout and Career Satisfaction Among US Oncologists
Gradishar, William J. , Kosty, Michael P., Satele, Daniel , Chew, Helen K. , Horn, Leora , Clark, Ben , Hanley, Amy, Chu, Quyen D. , Pippen, John , Sloan, Jeff, Raymond, Marilyn, Shanafelt, Tait D. , Sloan, Jeff A.

Journal of Clinical Oncology | January 28, 2014 | Volume: 32 | Issue: 7 | Pages: 678-686

10.1200/jco.2013.51.8480 | PMID 24470006 Get It

Purpose To evaluate the personal and professional characteristics associated with career satisfaction and burnout among US oncologists. Methods Between October 2012 and March 2013, the American Society of Clinical Oncology conducted a survey of US oncologists evaluating burnout and career satisfaction. The survey sample included equal numbers of men and women and represented all career stages. Results Of 2,998 oncologists contacted, 1,490 (49.7%) returned surveys (median age of respondents, 52 years; 49.6% women). Among the 1,117 oncologists (37.3% of overall sample) who completed full-length surveys, 377 (33.8%) were in academic practice (AP) and 482 (43.2%) in private practice (PP), with the remainder in other settings. Oncologists worked an average of 57.6 hours per week (AP, 58.6 hours per week; PP, 62.9 hours per week) and saw a mean of 52 outpatients per week. Overall, 484 oncologists (44.7%) were burned out on the emotional exhaustion and/or depersonalization domain of Maslach Burnout Inventory (AP, 45.9%; PP, 50.5%; P = .18). Hours per week devoted to direct patient care was the dominant professional predictor of burnout for both PP and AP oncologists on univariable and multivariable analyses. Although a majority of oncologists were satisfied with their career (82.5%) and specialty (80.4%) choices, both measures of career satisfaction were lower for those in PP relative to AP (all P < .006). Conclusion Overall career satisfaction is high among US oncologists, albeit lower for those in PP relative to AP. Burnout rates among oncologists seem similar to those described in recent studies of US physicians in general. Those oncologists who devote the greatest amount of their professional time to patient care seem to be at greatest risk for burnout.