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Hassan M, Nicholson T, Taylor L, Howell T, Hadden R, Syred K, Riordan R, Corcoran J, Daneshvar C. Focused neck ultrasound and lymph node sampling by respiratory physicians can provide a rapid diagnosis in a poor prognostic patient group with suspected lung cancer. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30060-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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McDill H, Hassan M, Corcoran J, Howell T, Daneshvar C. The impact of anticoagulation and antiplatelet drugs on the National Optimal Lung Cancer Pathway. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30082-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ashat M, Lewis A, Liaquat H, Stocker A, McElmurray L, Vedanarayanan V, Soota K, Howell T, Kedar A, Obert J, Abell TL. Intravenous immunoglobulin in drug and device refractory patients with the symptoms of gastroparesis-an open-label study. Neurogastroenterol Motil 2018; 30. [PMID: 29205691 DOI: 10.1111/nmo.13256] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 10/29/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Gastroparesis is a complex clinical entity; many aspects of which remain unknown. Although most patients have idiopathic, diabetic, or postsurgical gastroparesis, many are thought to have measurable neuromuscular abnormalities. Immunotherapy has recently been utilized to treat suspected autoimmune gastrointestinal dysmotility. METHODS Fourteen patients with symptoms of gastroparesis (Gp) who were refractory to drug/device were selected from 443 Gp patients from 2013 to 2015 who were treated at the University of Louisville motility center. All patients underwent a structural and psychiatric evaluation along with detailed psychological and behavioral examination to rule out eating disorders. We performed detailed neuromuscular evaluation and all 14 patients received at least 12 weeks of intravenous immunoglobulin (400 mg/kg infusion weekly). Response was defined subjectively (symptomatic improvement) using standardized IDIOM score system. KEY RESULTS All 14 patients had serological evidence and/or tissue evidence of immunological abnormality. Post-IVIG therapy, there was a significant improvement in symptoms scores for nausea, vomiting, early satiety, and abdominal pain. CONCLUSIONS AND INFERENCES Although limited by the absence of placebo group, the data illustrate the role of autoimmunity and neuromuscular evaluation in patients with gastroparesis and support the utility of a diagnostic trial of immunotherapy in an effort to improve therapeutic outcomes for such patients.
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Affiliation(s)
- M Ashat
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine, University of Iowa, Iowa City, IA, USA
| | - A Lewis
- Department of Internal Medicine, University of Louisville, Louisville, KY, USA
| | - H Liaquat
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - A Stocker
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - L McElmurray
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - V Vedanarayanan
- Division of Neuromuscular Medicine, University of Mississippi, Oxford, MS, USA
| | - K Soota
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine, University of Iowa, Iowa City, IA, USA
| | - T Howell
- GI Motility Clinic, Jewish Hospital, Louisville, KY, USA
| | - A Kedar
- Division of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - J Obert
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - T L Abell
- Division of Gastroenterology, Hepatology & Nutrition, Department of Medicine, Jewish Hospital GI Motility Clinic, University of Louisville, Louisville, KY, USA
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Howell T. ED Utilization by Uninsured and Medicaid Patients after Availability of Telephone Triage. J Emerg Nurs 2015; 42:120-4. [PMID: 26409919 DOI: 10.1016/j.jen.2015.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 08/08/2015] [Accepted: 08/19/2015] [Indexed: 10/23/2022]
Abstract
PROBLEM For emergency departments experiencing crowding and a high percentage of patients leaving without being seen, a telephone triage service can provide other care options for low-acuity patients. METHODS A nonexperimental pre- and postintervention comparative design was used to measure ED visit volumes from Medicaid and uninsured patients presenting with a low-acuity health care problem. Visit volumes for the 12 months before and 12 months after the initiation of telephone triage were compared. RESULTS The overall low-acuity visit volume increased in the first 12 months of telephone triage availability. However, the proportion of low-acuity Medicaid and uninsured patients seeking ED care decreased. For the first 12 months of operation, telephone triage received 10,055 calls. Sixty percent of the calls (N = 6086) were from uninsured and Medicaid patients. More than 43% of the calls resulted in a self-care decision. IMPLICATIONS FOR PRACTICE A telephone triage service may help decrease ED crowding by communicating other care options to patients with low-acuity health problems.
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Ellis C, Hammett C, Ranasinghe I, French J, Briffa T, Devlin G, Elliott J, Lefkovitz J, Aliprandi-Costa B, Astley C, Redfern J, Howell T, Carr B, Lintern K, Bloomer S, Farshid A, Matsis P, Hamer A, Williams M, Troughton R, Horsfall M, Hyun K, Gamble G, White H, Brieger D, Chew D. Comparison of the management and in-hospital outcomes of acute coronary syndrome patients in Australia and New Zealand: results from the binational SNAPSHOT acute coronary syndrome 2012 audit. Intern Med J 2015; 45:497-509. [DOI: 10.1111/imj.12739] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 03/04/2015] [Indexed: 12/22/2022]
Affiliation(s)
- C. Ellis
- Department of Cardiology; Auckland City Hospital; Auckland New Zealand
| | - C. Hammett
- Royal Brisbane and Women's Hospital; Brisbane Queensland Australia
| | - I. Ranasinghe
- The George Institute for Global Health; Sydney Australia
| | - J. French
- Department of Cardiology; Liverpool Hospital; Sydney Australia
| | - T. Briffa
- School of Population Health; University of Western Australia; Perth Western Australia Australia
| | - G. Devlin
- Department of Cardiology; Waikato Hospital; Hamilton New Zealand
| | - J. Elliott
- Cardiology Department; Christchurch Hospital; Christchurch New Zealand
| | - J. Lefkovitz
- Royal Melbourne Hospital; Melbourne Victoria Australia
| | | | - C. Astley
- Statewide Systems Strategy; SA Health; Adelaide South Australia Australia
| | - J. Redfern
- The George Institute for Global Health; Sydney Australia
| | - T. Howell
- Clinical Access and Redesign Unit; Queensland Department of Health; Brisbane Queensland Australia
| | - B. Carr
- Agency for Clinical Innovation; Sydney Australia
| | - K. Lintern
- Agency for Clinical Innovation; Sydney Australia
| | - S. Bloomer
- Health Networks Branch; Department of Health of Western Australia; Perth Western Australia Australia
| | - A. Farshid
- Department of Cardiology; The Canberra Hospital; Canberra ACT, New South Wales Australia
| | - P. Matsis
- Cardiology Department; Wellington Hospital; Wellington New Zealand
| | - A. Hamer
- Department of Cardiology; Nelson Marlborough District Health Board; Nelson New Zealand
| | - M. Williams
- Cardiology Department; Dunedin Hospital; Dunedin New Zealand
| | - R. Troughton
- The Christchurch Heart Institute; Department of Medicine; University of Otago Christchurch; Christchurch New Zealand
| | - M. Horsfall
- Department of Cardiovascular Medicine; Flinders University; Adelaide South Australia Australia
| | - K. Hyun
- The George Institute for Global Health; Sydney Australia
| | - G. Gamble
- Department of Medicine; University of Auckland; Auckland New Zealand
| | - H. White
- Department of Cardiology; Auckland City Hospital; Auckland New Zealand
| | - D. Brieger
- Department of Cardiology; Concord Hospital; Sydney Australia
| | - D. Chew
- Department of Cardiovascular Medicine; Flinders University; Adelaide South Australia Australia
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Affiliation(s)
- Mark Douglas
- Mark Douglas is an administrative nursing supervisor at Baptist Hospitals of Southeast Texas in Beaumont Tex. Tim Howell is the senior vice president of Patient Care Services at University Medical Center in Lubbock, Tex. Elaine Nelson is the chief nursing officer at Texas Health Harris Methodist Fort Worth in Fort Worth, Tex. Laurel Pilkington is a nursing professional development specialist III and a clinical educator at McLane Children's Hospital in Temple, Tex. Irene Salinas is an assistant professor at Texas Tech Health Sciences Center School of Nursing in Lubbock, Tex
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Prior K, Fingleton J, Howell T. S43 Real World Experience Of The Use Of Pet-ct For Distinguishing Between Benign Pleural Disease And Malignant Mesothelioma. Thorax 2014. [DOI: 10.1136/thoraxjnl-2014-206260.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hopkinson N, Wallis C, Higgins B, Gaduzo S, Sherrington R, Keilty S, Stern M, Britton J, Bush A, Moxham J, Sylvester K, Griffiths V, Sutherland T, Crossingham I, Raju R, Spencer C, Safavi S, Deegan P, Seymour J, Hickman K, Hughes J, Wieboldt J, Shaheen F, Peedell C, Mackenzie N, Nicholl D, Jolley C, Crooks G, Crooks G, Dow C, Deveson P, Bintcliffe O, Gray B, Kumar S, Haney S, Docherty M, Thomas A, Chua F, Dwarakanath A, Summers G, Prowse K, Lytton S, Ong YE, Graves J, Banerjee T, English P, Leonard A, Brunet M, Chaudhry N, Ketchell RI, Cummings N, Lebus J, Sharp C, Meadows C, Harle A, Stewart T, Parry D, Templeton-Wright S, Moore-Gillon J, Stratford- Martin J, Saini S, Matusiewicz S, Merritt S, Dowson L, Satkunam K, Hodgson L, Suh ES, Durrington H, Browne E, Walters N, Steier J, Barry S, Griffiths M, Hart N, Nikolic M, Berry M, Thomas A, Miller J, McNicholl D, Marsden P, Warwick G, Barr L, Adeboyeku D, Mohd Noh MS, Griffiths P, Davies L, Quint J, Lyall R, Shribman J, Collins A, Goldman J, Bloch S, Gill A, Man W, Christopher A, Yasso R, Rajhan A, Shrikrishna D, Moore C, Absalom G, Booton R, Fowler RW, Mackinlay C, Sapey E, Lock S, Walker P, Jha A, Satia I, Bradley B, Mustfa N, Haqqee R, Thomas M, Patel A, Redington A, Pillai A, Keaney N, Fowler S, Lowe L, Brennan A, Morrison D, Murray C, Hankinson J, Dutta P, Maddocks M, Pengo M, Curtis K, Rafferty G, Hutchinson J, Whitfield R, Turner S, Breen R, Naveed SUN, Goode C, Esterbrook G, Ahmed L, Walker W, Ford D, Connett G, Davidson P, Elston W, Stanton A, Morgan D, Myerson J, Maxwell D, Harrris A, Parmar S, Houghton C, Winter R, Puthucheary Z, Thomson F, Sturney S, Harvey J, Haslam PL, Patel I, Jennings D, Range S, Mallia-Milanes B, Collett A, Tate P, Russell R, Feary J, O'Driscoll R, Eaden J, Round J, Sharkey E, Montgomery M, Vaughan S, Scheele K, Lithgow A, Partridge S, Chavasse R, Restrick L, Agrawal S, Abdallah S, Lacy-Colson A, Adams N, Mitchell S, Haja Mydin H, Ward A, Denniston S, Steel M, Ghosh D, Connellan S, Rigge L, Williams R, Grove A, Anwar S, Dobson L, Hosker H, Stableforth D, Greening N, Howell T, Casswell G, Davies S, Tunnicliffe G, Mitchelmore P, Phitidis E, Robinson L, Prowse K, Bafadhel M, Robinson G, Boland A, Lipman M, Bourke S, Kaul S, Cowie C, Forrest I, Starren E, Burke H, Furness J, Bhowmik A, Everett C, Seaton D, Holmes S, Doe S, Parker S, Graham A, Paterson I, Maqsood U, Ohri C, Iles P, Kemp S, Iftikhar A, Carlin C, Fletcher T, Emerson P, Beasley V, Ramsay M, Buttery R, Mungall S, Crooks S, Ridyard J, Ross D, Guadagno A, Holden E, Coutts I, Cullen K, O'Connor S, Barker J, Sloper K, Watson J, Smith P, Anderson P, Brown L, Nyman C, Milburn H, Clive A, Serlin M, Bolton C, Fuld J, Powell H, Dayer M, Woolhouse I, Georgiadi A, Leonard H, Dodd J, Campbell I, Ruiz G, Zurek A, Paton JY, Malin A, Wood F, Hynes G, Connell D, Spencer D, Brown S, Smith D, Cooper D, O'Kane C, Hicks A, Creagh-Brown B, Lordan J, Nickol A, Primhak R, Fleming L, Powrie D, Brown J, Zoumot Z, Elkin S, Szram J, Scaffardi A, Marshall R, Macdonald I, Lightbody D, Farmer R, Wheatley I, Radnan P, Lane I, Booth A, Tilbrook S, Capstick T, Hewitt L, McHugh M, Nelson C, Wilson P, Padmanaban V, White J, Davison J, O'Callaghan U, Hodson M, Edwards J, Campbell C, Ward S, Wooler E, Ringrose E, Bridges D, Long A, Parkes M, Clarke S, Allen B, Connelly C, Forster G, Hoadley J, Martin K, Barnham K, Khan K, Munday M, Edwards C, O'Hara D, Turner S, Pieri-Davies S, Ford K, Daniels T, Wright J, Towns R, Fern K, Butcher J, Burgin K, Winter B, Freeman D, Olive S, Gray L, Pye K, Roots D, Cox N, Davies CA, Wicker J, Hilton K, Lloyd J, MacBean V, Wood M, Kowal J, Downs J, Ryan H, Guyatt F, Nicoll D, Lyons E, Narasimhan D, Rodman A, Walmsley S, Newey A, Buxton M, Dewar M, Cooper A, Reilly J, Lloyd J, Macmillan AB, Roots D, Olley A, Voase N, Martin S, McCarvill I, Christensen A, Agate R, Heslop K, Timlett A, Hailes K, Davey C, Pawulska B, Lane A, Ioakim S, Hough A, Treharne J, Jones H, Winter-Burke A, Miller L, Connolly B, Bingham L, Fraser U, Bott J, Johnston C, Graham A, Curry D, Sumner H, Costello CA, Bartoszewicz C, Badman R, Williamson K, Taylor A, Purcell H, Barnett E, Molloy A, Crawfurd L, Collins N, Monaghan V, Mir M, Lord V, Stocks J, Edwards A, Greenhalgh T, Lenney W, McKee M, McAuley D, Majeed A, Cookson J, Baker E, Janes S, Wedzicha W, Lomas Dean D, Harrison B, Davison T, Calverley P, Wilson R, Stockley R, Ayres J, Gibson J, Simpson J, Burge S, Warner J, Lenney W, Thomson N, Davies P, Woodcock A, Woodhead M, Spiro S, Ormerod L, Bothamley G, Partridge M, Shields M, Montgomery H, Simonds A, Barnes P, Durham S, Malone S, Arabnia G, Olivier S, Gardiner K, Edwards S. Children must be protected from the tobacco industry's marketing tactics. BMJ 2013; 347:f7358. [PMID: 24324220 DOI: 10.1136/bmj.f7358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Nicholas Hopkinson
- British Thoracic Society Chronic Obstructive Pulmonary Disease Specialist Advisory Group, National Heart and Lung Institute, Imperial College, London SW3 6NP, UK
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Cullinan P, McGavin CR, Kreiss K, Nicholson AG, Maher TM, Howell T, Banks J, Newman Taylor AJ, Chen CH, Tsai PJ, Shih TS, Burge PS. Obliterative bronchiolitis in fibreglass workers: a new occupational disease? Occup Environ Med 2013; 70:357-9. [PMID: 23322914 DOI: 10.1136/oemed-2012-101060] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
RATIONALE AND OBJECTIVES Obliterative bronchiolitis (OB) is a rare disease with a small number of established occupational aetiologies. We describe a case series of severe OB in workers making glass-reinforced plastics. METHODS Workplace exposures were the likely cause after the independent diagnosis of OB in two workers laying up the fibreglass hulls of yachts; the second worker took over the job of the first after he left following a lung transplant. Presentation of these two cases at international meetings led to others identifying similar workers. MAIN RESULTS We identified six workers with good evidence of OB. All were involved in preparing fibreglass with styrene resins, five as boat builders laying up fibreglass hulls and one during cooling-tower fabrication. The disease came on rapidly without unusual acute exposures. Two patients had lung transplants, while another died while waiting for one. Histology confirmed OB in the four with biopsies/post-mortem examinations or explanted lungs. CONCLUSIONS A rare, potentially fatal disease occurring in six workers laying up fibreglass with styrene resins from five different worksites suggests that work exposures were the cause of their OB. The precise agent responsible awaits identification.
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Affiliation(s)
- Paul Cullinan
- Occupational and Environmental Medicine, National Heart & Lung Institute, Imperial College London, London, UK.
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Topic Popovic N, Howell T, Babish J, Bowser P. Cross-sectional study of hepatic CYP1A and CYP3A enzymes in hybrid striped bass, channel catfish and Nile tilapia following oxytetracycline treatment. Res Vet Sci 2012; 92:283-91. [DOI: 10.1016/j.rvsc.2011.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 01/10/2011] [Accepted: 03/03/2011] [Indexed: 11/30/2022]
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Howell T. The evolution of treatment for early breast cancer: what's next? Ecancermedicalscience 2009; 3:148. [PMID: 22276013 PMCID: PMC3224007 DOI: 10.3332/ecancer.2009.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Indexed: 11/17/2022] Open
Affiliation(s)
- T Howell
- Cancer Research Campaign Department of Medical Oncology, University of Manchester, Christie Hospital and Holt Radium Institute, Wilmslow Road, Manchester, M20 4BX, UK
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Howell T, Fusch C. Neuartiges Rückhaltesystem für Früh- und Neugeborene bei Inkubatortransporten. Z Geburtshilfe Neonatol 2008. [DOI: 10.1055/s-2008-1079052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Howell T, Bara A, Greenstone M. Almitrine for chronic obstructive pulmonary disease. Hippokratia 2007. [DOI: 10.1002/14651858.cd003796.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Watson SB, Charlton M, Rao YR, Howell T, Ridal J, Brownlee B, Marvin C, Millard S. Off flavours in large waterbodies: physics, chemistry and biology in synchrony. Water Sci Technol 2007; 55:1-8. [PMID: 17489387 DOI: 10.2166/wst.2007.155] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The Laurentian Great Lakes of North America are a drinking water source for millions of Canadian and US consumers. These waterbodies have undergone extensive change over the past century as a result of widespread degradation and remediation. Many of the Lakes are prone to taste and odour (T&O), and although these outbreaks have been poorly monitored, evidence suggests that they are increasing in frequency. Tracing and controlling T&O in such large systems presents a challenging task, due to their physical size and complexity. This paper presents an overview of recent investigative and management approaches to T&O in Lake Ontario and its outflow, the St. Lawrence River. We have identified three distinct patterns of T&O in these source-waters, caused by geosmin and 2-methylisoborneol and differing in their planktonic and benthic sources, and temporal and spatial dynamics. Each pattern has required a different approach by scientists and management, in partnership with the water industry. We have shown these T&O outbreaks are caused and moderated by physical, chemical and biological mechanisms over a spectrum of spatial and temporal scales. Canadian municipalities affected by these outbreaks have been key to the investigation of the links between T&O and ecosystem processes with the aim to develop more proactive water treatment and long-term management.
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Affiliation(s)
- S B Watson
- Aquatic Ecosystems Management Research, Environment Canada, CCIW, Burlington, ON, Canada.
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Bachmaier N, Schuldt M, Howell T, Otto S, Haas JP, Stenger RD. Verdacht auf Kindesmisshandlung: Zystische pulmonale Malformation vom Typ I als seltene Differenzialdiagnose. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Howell T, Brückner A, Küster H, Fusch C. Gesamtbilirubin-Serumkonzentration von 867µmol/l (50,71mg/dl) – kein Hinweis auf Kernikterus. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hall AJ, Tripp M, Howell T, Darland G, Bland JS, Babish JG. Gastric mucosal cell model for estimating relative gastrointestinal toxicity of non-steroidal anti-inflammatory drugs. Prostaglandins Leukot Essent Fatty Acids 2006; 75:9-17. [PMID: 16806870 DOI: 10.1016/j.plefa.2006.04.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2006] [Accepted: 04/27/2006] [Indexed: 11/15/2022]
Abstract
The study objective was to characterize the AGS human gastric mucosal cell line as a model for estimating gastrointestinal toxicity of COX-inhibiting compounds. Rofecoxib, celecoxib, nimesulide, ibuprofen, indomethacin, aspirin, salicylic acid, naproxen and acetaminophen were tested for inhibition of COX-2-mediated prostaglandin E2 synthesis in A549 and AGS cells. The IC50 ratio AGS/A549 was calculated as an estimate of the therapeutic index (TI) for gastrointestinal toxicity. Calculated IC50 values of non-steroidal anti-inflammatory drugs (NSAIDs) in A549 cells were in excellent agreement with published values (r = 0.996; P < 0.005). Calcium ionophore induction of arachidonic acid release in AGS cells provided TI similar to those using platelets and A549 cells (r = 0.918; P < 0.01). The AGS/A549 model exhibited lower TI than the platelet/A549 model. Spearman ranking correlated clinical NSAID gastropathy with lower AGS TI values. The AGS cell line has excellent potential to serve as a model for assessing the gastrointestinal effects of COX-inhibiting compounds.
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Affiliation(s)
- A J Hall
- Metagenics, 9770 44th Avenue, Gig Harbor, WA 98332, USA.
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Scheler-hofmann M, Howell T, Panzig E, Fusch C, Stenger R. Crit Care 2006; 10:P464. [DOI: 10.1186/cc4811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Parmar JS, Howell T, Kelly J, Bilton D. Profound adrenal suppression secondary to treatment with low dose inhaled steroids and itraconazole in allergic bronchopulmonary aspergillosis in cystic fibrosis. Thorax 2002; 57:749-50. [PMID: 12149540 PMCID: PMC1746400 DOI: 10.1136/thorax.57.8.749] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The case history is presented of a patient with cystic fibrosis in whom the treatment of allergic bronchopulmonary aspergillosis with itraconazole produced an initial response but was complicated by profound adrenal shutdown and impairment of inhaled steroid clearance resulting in paradoxical Cushing's syndrome. The authors conclude that, while it is laudable to attempt to reduce the steroid burden in any patient, it is imperative that due vigilance is exercised when using a combination of agents which interact. If such a combination therapy is embarked upon, regular assessment of the pituitary adrenal axis is advisable.
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Affiliation(s)
- J S Parmar
- Adult CF Unit Papworth Hospital, Papworth NHS Trust, Papworth Everard, Cambridge CB3 8RE, UK.
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Howell T, Bara A, Greenstone M. Almitrine for chronic obstructive pulmonary disease. Hippokratia 2001. [DOI: 10.1002/14651858.cd003796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Coyne C, Baravick J, Howell T, Baravick E, Willetto C, Fenwick BW. Biochemical mechanisms that interact with membrane-associated IL-1 RII (60-kDa decoy) receptors in populations of adherent macrophages and vascular endothelium. Cell Signal 2001; 13:765-76. [PMID: 11602187 DOI: 10.1016/s0898-6568(01)00196-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aim of this investigation was to identify the potential biochemical mechanisms that alter the integrity of membrane-associated IL-1 RII (decoy) receptor complexes expressed by populations of adherent macrophages and vascular endothelium. The initial research strategy utilized to achieve this objective involved delineating the ability of macrophage activation or exposure of macrophages and vascular endothelium to a spectrum of enzyme proteases to influence the expression of membrane-associated IL-1 RII (decoy) or generate soluble fragments of this receptor complex. Results from these investigations revealed that stimulated macrophages displayed proportional increases in both the expression of membrane-associated IL-1 RII (decoy) and release of soluble receptor fragments. Exposure of macrophages and vascular endothelium to the reference proteases discovered the ability of cathepsin-D to biochemically deplete membrane-associated IL-1 RII (decoy) in addition to generating soluble fragments of this receptor complex. Complementary investigations isolated a carboxyl/aspartate protease from activated macrophages utilizing pepstatin-A affinity chromatography. Exposure of vascular endothelium to pepstatin-A binding proteins resulted in a detectable depletion of membrane-associated IL-1 RII (decoy) and generation of soluble receptor fragments. Evaluation of pepstatin-A binding proteins by SDS-PAGE identified a primary protein fraction with a molecular mass of 47-52 kDa that closely correlates with the known molecular size of leukocyte cathepsin-D fractions. Macrophage pepstatin-A binding protein fractions evaluated by nondenaturing haemoglobin-substrate PAGE (Hb-PAGE) analysis detected a lucent proteolytic band at 47-52 kDa. Macrophage pepstatin-A binding proteins also hydrolyzed a synthetic enzyme-specific substrate that selectively recognizes cathepsin-D biochemical activity. In conclusion, the leukocyte carboxyl/aspartate protease cathepsin-D can biochemically alter the integrity and generate soluble fragments of membrane-associated IL-1 RII (60-kDa decoy) receptor complexes expressed by macrophages and vascular endothelium.
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Affiliation(s)
- C Coyne
- Veterinary Pharmacology Research Laboratory, Veterinary Research Programme, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA.
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Coyne CP, Howell T, Baravick J, Baravick E, Willetto C, Fenwick BW. Biochemical alteration of membrane-associated IL-6 RI (80-kDa) in adherent macrophages and vascular endothelium. Mol Immunol 2001; 38:347-57. [PMID: 11684290 DOI: 10.1016/s0161-5890(01)00074-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The potential biochemical mechanisms that mediate the 'shedding' of soluble IL-6 RI (80-kDa) receptor fragments in populations of adherent macrophages were explored. Stimulated macrophages displayed proportional increases in both the expression of membrane-associated IL-6 RI (80-kDa) and the release of soluble receptor fragments. The use of protease inhibitors implicated thiol/cysteine and carboxyl/aspartate proteases in this process. Cathepsin-D depleted membrane-associated IL-6 RI (80-kDa) complexes and generated soluble receptor fragments. A carboxyl/aspartate protease from activated macrophages isolated utilizing pepstatin-A affinity chromatography, was also found to affect membrane-associated IL-6 RI (80-kDa) complexes and generate soluble receptor fragments. Most likely, this fraction corresponded to cathepsin-D based upon its origin, pepstatin-A binding avidity, Hb-PAGE zymography, and hydrolysis of an enzyme-specific substrate. We conclude that cathepsin-D can generate soluble fragments of IL-6 RI (80-kDa) expressed by both macrophages and vascular endothelium.
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Affiliation(s)
- C P Coyne
- Veterinary Research Program, Veterinary Pharmacology Research Laboratory, College of Veterinary Medicine, Mississippi State University, Mississippi, USA.
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Robertson G, Miller J, Howell T, Penney S. Legal norms relevant to the practice of human genetics: a background paper. Health Law J 1999; 3:187-211. [PMID: 10569875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- G Robertson
- Health Law Institute, University of Alberta, Edmonton
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Abstract
BACKGROUND Polyclonal antithymocyte globulins have been assumed to deplete or sequester immunocompetent T cells. We investigated the hypothesis that anti-human thymocyte globulin (ATGAM)-mediated immunosuppression is delivered via nondepletive, immunologically specific actions as a consequence of simultaneous engagement of multiple T cell receptors. METHODS Purified T cells obtained from healthy volunteers or renal transplant recipients receiving their first dose of ATGAM were evaluated for proliferative responses and cell-mediated lympholysis. ATGAM binding and receptor expression were determined by flow cytometry. Cytokines and ATGAM levels were measured by enzyme-linked immunosorbent assay. RESULTS ATGAM-treated T cells showed significant dose-dependent inhibition of proliferation in vitro at concentrations comparable to those measured in patients. Effectors raised after ATGAM treatment failed to develop cytotoxicity. Supernatant interleukin (IL)-2 levels in ATGAM-treated cultures were significantly reduced (P<0.01 vs. control). IL-4 was not significantly altered. In vivo studies confirmed significant ATGAM-mediated inhibition of proliferative responses. Concanavalin A and OKT3-driven proliferation were reduced 30-60% by ATGAM. Flow cytometry showed that ATGAM recognized multiple cell surface receptors and resulted in markedly increased IL-2R and CD28 expression in the absence of proliferation, demonstrating partial T-cell activation. ATGAM synergized with phorbol myristate acetate to produce strong proliferation, which suggests that it provides a calcium-based signal resulting in anergy. CONCLUSIONS ATGAM recognizes and cross-links multiple cell surface receptors and costimulator molecules on human T cells. Simultaneous engagement by ATGAM in the context of allogeneic or mitogenic stimulation leads to partial T-cell activation and anergy.
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Affiliation(s)
- R M Merion
- Department of Surgery, University of Michigan Medical School, Ann Arbor 48109, USA.
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Jones PJ, Howell T, MacDougall DE, Feng JY, Parsons W. Short-term administration of tall oil phytosterols improves plasma lipid profiles in subjects with different cholesterol levels. Metabolism 1998; 47:751-6. [PMID: 9627377 DOI: 10.1016/s0026-0495(98)90041-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
To assess the short-term cholesterol-lowering potential of sitostanol-containing tall oil plant sterols, 22 subjects consumed fixed-food diets over two 10-day periods with or without 21.2 mg/kg body weight/d tall oil phytosterols (sitosterol 62%, sitostanol 21%, campesterol 16%, and campestanol 1%) in a randomized crossover study design. On day 10 of each diet, plasma lipoprotein cholesterol levels, plasma phytosterol concentrations, and cholesterol biosynthesis rates were determined. Total cholesterol (TC) and low-density lipoprotein (LDL) cholesterol levels were lower (P < .01) after administration of tall oil phytosterol (4.7 +/- 0.3 and 3.0 +/- 0.3 mmol/L, respectively) versus placebo (5.0 +/- 0.3 and 3.2 +/- 0.3 mmol/L, respectively). Tall oil treatment had no effect on the plasma high-density lipoprotein (HDL) cholesterol level (1.1 +/- 0.1 mmol/L) versus placebo (1.1 +/- 0.1 mmol/L). Similarly, plasma triglyceride (TG) levels did not differ between tall oil (1.3 +/- 0.2 mmol/L) and placebo (1.4 +/- 0.2 mmol/L) treatments. Plasma campesterol (15.8 +/- 3.7 mmol/mol cholesterol) and sitosterol (6.0 +/- 2.1 mmol/mol cholesterol) levels were not different after tall oil treatment versus placebo treatment (15.4 +/- 2.3 and 6.4 +/- 2.0 mmol/mol cholesterol, respectively). Plasma sitostanol levels were essentially undetectable. No difference was observed in cholesterol biosynthesis between tall oil (0.045 +/- 0.004 pools/d) and placebo (0.034 +/- 0.004 pools/d) treatments; however, the effect of treatments in subjects with different cholesterol levels varied. In subjects with lower cholesterol values, the red blood cell cholesterol fractional synthesis rate (FSR) increased from 0.0291 +/- 0.0054 pools/d after placebo to 0.0509 +/- 0.0049 pools/d (P < .05) after phytosterol treatment. In subjects with higher cholesterol values, the red blood cell cholesterol FSR did not change significantly after treatment. These results demonstrate the short-term efficacy of tall oil plant sterols as cholesterol-lowering agents.
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Affiliation(s)
- P J Jones
- School of Dietetics and Human Nutrition, McGill University, Montreal, Quebec, Canada
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Affiliation(s)
- T Howell
- Christie Hospital, Withington, Manchester, U.K
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Plaut TF, Howell T, Walsh S, Pastor M, Jones T. A systems approach to asthma care. Manag Care Q 1997; 4:6-18. [PMID: 10159035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
This two-year asthma intervention focuses on provider education emphasizing early diagnosis of asthma, early use of oral steroids, proper use of inhalation devices, objective monitoring of patient status, and use of daily preventive treatment. Patient education is an integral part of treatment. This approach supports the primary care physician as the provider and coordinator of care by supplying monitoring and treatment devices, books, diaries, home care services, and allergy consultation. It also manifests a systems approach to asthma care in its reliance on a nurse case manager who oversees patient and family support network.
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Affiliation(s)
- T F Plaut
- Principal Health Care of Louisiana, New Orleans, USA
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Runciman C, Walker G, Katz C, Howell T. Equitable provision of health services to aboriginal and Torres Strait Islander people of Queensland. Aust N Z J Public Health 1996; 20:15-7. [PMID: 8799060 DOI: 10.1111/j.1467-842x.1996.tb01329.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- C Runciman
- Queensland Department of Health, Brisbane
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Abstract
Sequential recordings were made in the first five months after birth of metabolic rate, environmental temperature, and body temperature during sleep at home in 17 infants, each with an older sibling. Further recordings were made whenever an older sibling developed an upper respiratory tract infection (URTI), again four to six days later, and again two weeks later, aiming to achieve recordings before, during, and after an URTI in the infant. The temperature of the room and wrapping of the infant were determined according to their usual practice by the parents. Parents added appropriate wrapping to achieve thermal neutrality based on our calculated values and the measured oxygen consumption. In five of the six infants who developed an URTI in the first three months after birth there was no change or a decrease in metabolic rate at the time of the infection; for infants older than 3 months the metabolic rate increased in three of the five episodes recorded. Peripheral skin temperature decreased at the time of URTI at all ages, though in the older infants it usually increased in parallel with rectal temperature during the latter part of the night, when pyrexia was most common. Infants thus respond to URTI by heat conservation. In the younger infants the lower metabolic rate and the further decrease in this rate with URTI means that fever is rare, and their temperature may decrease on infection. In the older infants the increase in metabolic rate (from an already higher baseline) may result in fever. These differences may contribute to the increased vulnerability of the older infants to heat stress, particularly at the time of acute viral infections.
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Abstract
The need for collaboration and cooperation in health care delivery is not news. But one of the first requests often made by leaders and others promoting collaborative work in organizations is for a "facilitator course." As the authors developed more knowledge about the real need, they understood that many of the barriers to collaborative work and learning in organizations can be reduced only by the top leaders, not by expert facilitators. The central knowledge that leaders need to support collaborative work is appreciation of work as a system.
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Affiliation(s)
- S Ferguson
- Hospital Corporation of America, Nashville, TN
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Howell T, Watts DT. Physician-assisted suicide. J Am Geriatr Soc 1993; 41:888-9. [PMID: 8340574 DOI: 10.1111/j.1532-5415.1993.tb06197.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Stewart A, Fleming P, Howell T. Cot death: follow up support for families with subsequent children. Health Visit 1993; 66:244-247. [PMID: 8396078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Sudden infant death is the major cause of post-neonatal mortality in industrialised countries. For parents, the sudden, unexpected and inexplicable death of their baby can be devastating. Long-term support and follow-up care is needed. In the second of two articles Alison Stewart, Peter Fleming and Thelma Howell describe a follow-up support scheme offered to parents in Avon who have experienced a cot death and subsequently go on to have another child or children.
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Affiliation(s)
- D T Watts
- Department of Medicine, University of Wisconsin, Madison
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Abstract
OBJECTIVE To identify geriatricians' attitudes toward assisting suicide of dementia patients, with particular reference to the case of Janet Adkins/Dr. Kevorkian. DESIGN Mailed questionnaire survey. SETTING Four distinct geographical regions of the US: Far West, Midwest, Southeast, and Northeast. PARTICIPANTS All 1,381 ABIM-certified internist geriatricians in the four regions; 727 (52.6%) responded. MAIN OUTCOME MEASURES Positive, negative, or unsure responses to questionnaire items; comparison of responses between geographical regions. RESULTS Sixty-six percent of respondents felt that Dr. Kevorkian's assistance of Janet Adkins' suicide was not justifiable, while 14% stated it was morally justifiable. Twenty-nine percent felt Janet Adkins' decision to commit suicide was morally wrong, while 49% stated it was not morally wrong. If the responding geriatricians themselves were diagnosed as having a dementing illness, 41% would consider suicide a possible option; 39% would not consider suicide. Twenty-six percent favored easing restrictions on physician-assisted suicide of competent dementia patients, while 57% opposed this. If current restrictions were eased, 21% would consider assisting suicide of competent dementia patients, and 66% would not. Respondents' attitudes showed some significant (P less than or equal to 0.05) variations by geographical region. Where regional differences were observed, respondents in the Midwest tended to show more conservative attitudes toward physician-assisted suicide than those in the Far West and Northeast. CONCLUSIONS Most responding geriatricians would not consider assisting suicide of dementia patients, and most oppose easing restrictions on physician-assisted suicide. Many, however, could accept the (unassisted) suicide of a competent dementia patient, and many would consider suicide themselves if stricken with dementia.
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Affiliation(s)
- D T Watts
- Department of Medicine, University of Wisconsin, Madison
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Abstract
Elderly persons with psychiatric disorders often experience a variety of functional deficits that affect their independence, safety, and activity level. The occupational therapist's role in addressing these needs is discussed, as are the possibilities for improvement of the elderly person's autonomy, safety, and integrity. Barriers to optimal service provision in the health care and social service systems as well as in occupational therapy are addressed.
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Affiliation(s)
- S Trace
- Geropsychiatric Center, Mendota Mental Health Institute, Madison, Wisconsin 53704
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Strome T, Howell T. How antipsychotics affect the elderly. Am J Nurs 1991; 91:46-9. [PMID: 1673820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- T Strome
- University of Wisconsin School of Medicine, Madison
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Affiliation(s)
- T Howell
- Geropsychiatric Center, Mendota Mental Health Institute, Madison, WI 53704
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Stein LI, Watts DT, Howell T. [About relations between physicians and nurses. New rules of the game]. Krankenpfl Soins Infirm 1990; 83:23-7, 66-70. [PMID: 2376960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Affiliation(s)
- L I Stein
- University of Wisconsin, Madison 53792
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Abstract
When a cognitively-impaired elderly man nearly caused a serious fire at home through his inappropriate use of a gas oven, the incident raised questions about his capacity to live alone. Although he clearly wanted to preserve his independence, the health care team felt obligated to assure his safety. The following discussion of dangerous behavior in a demented elderly man elicits and portrays these conflicting values, and highlights the physician's obligations in such ethically and legally complex situations.
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Affiliation(s)
- D T Watts
- Department of Medicine, University of Wisconsin, Madison
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Barnes DM, Healy K, Morten H, Howell T, Swindell R. Progesterone receptors should be measured in postmenopausal women negative for estrogen receptor. Clin Chem 1987; 33:741-2. [PMID: 3568384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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