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Lau W, Chisholm K, Gallagher M, Felmingham K, Murray K, Pearce A, Doyle N, Alexander S, O'Brien H, Putica A, Khatri J, Bockelmann P, Hosseiny F, Librado A, Notarianni M, O'Donnell M. Comparing the unified protocol for transdiagnostic treatment of emotional disorders to prolonged exposure for the treatment of PTSD: Design of a non-inferiority randomized controlled trial. Contemp Clin Trials Commun 2023; 33:101134. [PMID: 37228903 PMCID: PMC10205430 DOI: 10.1016/j.conctc.2023.101134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/21/2023] [Accepted: 04/10/2023] [Indexed: 05/27/2023] Open
Abstract
Background Prolonged Exposure (PE), a trauma-focused therapy, is one of the most efficacious treatments available for PTSD. However, many people with PTSD do not lose their diagnosis following delivery of PE. The Unified Protocol (UP) for Transdiagnostic Treatment of Emotional Disorders is a non-trauma focused treatment that may offer an alternative treatment for PTSD. Methods This paper describes the study protocol for IMPACT, an assessor-blinded randomized controlled trial that examines the non-inferiority of UP relative to PE for participants who meet DSM-5 criteria for current PTSD. One hundred and twenty adult participants with PTSD will be randomized to receive either 10 × 90-min sessions of UP or PE with a trained provider. The primary outcome is severity of PTSD symptoms assessed by the Clinician Administered PTSD Scale for DSM-5 (CAPS-5) at post-treatment. Discussion While evidence-based treatments are available for PTSD, high levels of treatment dropout and non-response require new approaches to be tested. The UP is based on emotion regulation theory and is effective in treating anxiety and depressive disorders, however, there has been limited application to PTSD. This is the first rigorous study comparing UP to PE in a non-inferiority randomized controlled trial and may help improve clinical outcomes for those with PTSD. Trial registration This trial was prospectively registered with the Australian New Zealand Clinical Trials Registry, Trial ID (ACTRN12619000543189).
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Affiliation(s)
- W. Lau
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - K. Chisholm
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - M.W. Gallagher
- Department of Psychology, The University of Houston, TX, USA
| | - K. Felmingham
- Melbourne School of Psychological Sciences, The University of Melbourne, Victoria, Australia
| | - K. Murray
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - A. Pearce
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - N. Doyle
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - S. Alexander
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - H. O'Brien
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - A. Putica
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - J. Khatri
- Canberra Health Services, Australian Capital Territory Government, Canberra, Australia
| | - P. Bockelmann
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
| | - F. Hosseiny
- Atlas Institute for Veterans and Families, Ottawa, Canada
- University of Ottawa Institute of Mental Health Research at The Royal, Canada
| | - A. Librado
- Atlas Institute for Veterans and Families, Ottawa, Canada
| | - M. Notarianni
- Atlas Institute for Veterans and Families, Ottawa, Canada
- University of Ottawa Institute of Mental Health Research at The Royal, Canada
| | - M.L. O'Donnell
- Phoenix Australia – Centre for Posttraumatic Mental Health, Department of Psychiatry, The University of Melbourne, Victoria, Australia
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Thomas N, Stankard A, Cosgrave N, Conlon B, Monahan P, Halpin T, Britton D, Byrne P, McShane S, Sohail I, Grogan AM, Reilly A, Thapa A, Alsubaie N, Rane P, O'Connor J, Gray S, Kaja A, Gehani K, Kovalyshyn V, O'Brien H. 92 CONTINUING TO ‘BE HIP’: ORTHOGERIATRIC SERVICE IMPROVEMENTS IN 2021. Age Ageing 2022. [PMCID: PMC9620584 DOI: 10.1093/ageing/afac218.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background Scotland first demonstrated that adherence to nationally agreed hip fracture standards improve patient survival, reduces the duration of admission, and reduces the need for high dependency care. Our study aims to assess adherence to the Irish Hip Fracture Standards (IHFS) in our hospital for 2021 amidst the COVID-19 pandemic, translating to improved clinical outcomes for our patients. Methods The IHF database was retrospectively analysed, comparing quarters 1-4 in 2021 with our 2020 results. Results IHFS1, patient time to the ward < 4hours, was maintained at 67% in 2021 versus 71% overall in 2020. There was improvement in IHFS2, time to surgery within 48 hours, up to 73% in 2021 versus 66% in 2020. IHFS3 was 4% in 2021 versus 3% overall in 2020. Further improvements were noted for IHFS4, with 95% of patients reviewed by a Geriatrician in 2021 versus 87% in 2020. IHFS5 also improved with 97% of patients receiving a bone health assessment in 2021 versus 87% in 2020. Moreover, IHFS6, improved with 97% of patients undergoing a specialised falls assessment in 2021 versus 87% in 2020. Conclusion The improvement in 2021 figures is reflective of the return of redeployed services during the COVID-19 pandemic inclusive of the Orthogeriatric Service, the Fracture Liaison Service Advanced Nurse Practitioner, the Trauma Co-ordinator, and the specialist Orthopaedic ward complete with its Orthopaedic nurses and Multi-Disciplinary Team, and improved Emergency Department pathways. These continued improvements in the IHFS further emphasise that success is dependent on a team that is joined at the hip
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Affiliation(s)
- N Thomas
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - A Stankard
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - N Cosgrave
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - B Conlon
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - P Monahan
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - T Halpin
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - D Britton
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - P Byrne
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - S McShane
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - I Sohail
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - AM Grogan
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - A Reilly
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - A Thapa
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - N Alsubaie
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - P Rane
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - J O'Connor
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - S Gray
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - A Kaja
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - K Gehani
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - V Kovalyshyn
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - H O'Brien
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
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Stankard A, Thomas N, Cosgrave N, Conlon B, Monaghan P, Halpin T, English D, Byrne P, McShane S, Sohail I, Grogan AM, Reilly A, Thapa A, Alsubaie N, Rane P, O'Connor J, Gray S, Kaja A, Gehani K, Kovalyshyn V, O'Brien H. 258 RISING TO THE CHALLENGE: ORTHOGERIATRIC SERVICE IMPROVEMENT AND COVID-19. Age Ageing 2022. [DOI: 10.1093/ageing/afac218.227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Nationally agreed hip fracture standards have contributed to the improvement of outcomes in hip fracture patients. In 2020, our hospital was awarded “The Golden Hip” for achieving highest compliance with Irish Hip Fracture Standards (IHFS) nationally for 2019.
Methods
Data from the Irish Hip Fracture Database (IHFD)was retrospectively analysed to assess our performance in 2020 versus 2019 in hip fracture patients over sixty. Multiple quality improvement interventions were put in place throughout 2019 to ensure improvement in IHFS1-6 compliance: Creation of the Hip Fracture Pathway Subgroup, IHFS 1 Breaches Audit, Orthogeriatric input at Orthopaedic inductions, weekly Multi-disciplinary Team meetings, a Nutritional Hip Fracture Pathway and addition of the Fracture Liaison Service Advanced Nurse Practitioner.
Results
There were 239 hip fracture patients in 2020 vs 249 in 2019. IHFS1 compliance improved with the percentage of patients admitted to the Orthopaedic ward within 4 hours increasing to 71% in 2020 from 56% in 2019. There was improvement in IHFS2-time to surgery <48 hours- 66% in 2020 vs 60% in 2019. IHFS3-pressure ulcer rate-was at the national average, 3% in 2020 vs 2% in 2019. IHFS4 (reviewed by a Geriatrician), IHFS5 (received a bone health assessment) and IHFS6 (received a specialised falls assessment) were lower overall; 87% in 2020 vs 98% in 2019. For all quarters (Q),43% of patients met all IHFS in our hospital in 2020 vs 32% in 2019, resulting in €90,000 in Best Practice Tariff funding.
Conclusion
Lower results for IHFS 4,5 and 6 reflect the arrival of the COVID-19 pandemic which led to redeployment of the Orthogeriatric Service and redeployment of the MDT from end of Q1 to Q3. When services in 2020 were preserved,1 in 2 hip fracture patients met all IHFS, vs 1 in 3 patients in 2019. Despite the pandemic, we continued to achieve the highest level of IHFS compliance nationally, being awarded a second consecutive “Golden Hip” for 2020.
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Affiliation(s)
- A Stankard
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - N Thomas
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - N Cosgrave
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - B Conlon
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - P Monaghan
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - T Halpin
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - D English
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - P Byrne
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - S McShane
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - I Sohail
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - AM Grogan
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - A Reilly
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - A Thapa
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - N Alsubaie
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - P Rane
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - J O'Connor
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - S Gray
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - A Kaja
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - K Gehani
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - V Kovalyshyn
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
| | - H O'Brien
- Our Lady Of Lourdes Hospital , Drogheda, Ireland
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Stankard A, Conlon B, O'Brien H. 250 EXPANSION OF THE ORTHOGERIATRIC SERVICE: EARLY EXPERIENCES. Age Ageing 2021. [DOI: 10.1093/ageing/afab219.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
Abstract
Background
The introduction of hip fracture standards has led to improvement in outcomes for hip fracture patients. Other osteoporotic fragility fractures also lead to significant morbidity. They are associated with a high risk of future hip fracture. The Orthogeriatric Service at a model 3 hospital was expanded to proactively undertake comprehensive geriatric assessment(CGA) for patients over 65 with non-hip fragility fractures(NHFF) admitted to the Orthopaedic Ward. Electronic discharge summaries were created for all patients. This study aimed to characterise patients reviewed by Orthogeriatrics and review discharge summary documentation of CGA.
Methods
Patients reviewed by Orthogeriatrics during the period Jan-June 2021 were retrospectively analysed. Discharge summaries of these patients were retrospectively reviewed. The prevalence of documentation of frailty status, delirium screening and bone health plan was recorded.
Results
A total(n = 126) of 91 patients with hip fractures and 35 with NHFF were included. Other fracture types were excluded. The mean age of hip fracture patients was 82.43 compared to 78.2 in the NHFF group. 71%(n = 65) of hip fracture patients were female compared to 80% (n = 28) of NHFF. 80%(n = 73) of hip fracture patients were reviewed within 48 hours of admission, compared to 65%(n = 23) of NHFF. 52.7%(n = 48)of hip fracture patients had frailty status documented on their discharge summary, compared to 37.1%(n = 13) of NHFF. Delirium screening was documented for 58.2%(n = 53) of the hip fracture patients, compared to 40%(n = 14) of NHFF. Bone health plans were documented for 62.6%(n = 57) of hip fracture patients compared to 60%(n = 21) of NHFF.
Conclusion
Expansion of the Orthogeriatric Service to proactively review all NHFF patients will lead to reduced incidence of repeat fracture for this population. A lower percentage of NHFF patients had clear discharge documentation of CGA outcomes and a lower percentage were reviewed within 48 hours. Expansion of hip fracture standards to include all fragility fracture patients should be considered to incentivise improved care for all.
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Affiliation(s)
- A Stankard
- Our Lady of Lourdes Hospital , Drogheda, Ireland
| | - B Conlon
- Our Lady of Lourdes Hospital , Drogheda, Ireland
| | - H O'Brien
- Our Lady of Lourdes Hospital , Drogheda, Ireland
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Davey N, McFeely A, Doyle P, Stankard A, Coveney S, Alsubie N, O'Connor J, Conlon B, Monahan P, Byrne P, Britton D, Halpin T, McShane S, Sohail I, Lynch O, Basit M, NiBhuachalla B, Mulroy M, O'Brien H. 103 ORTHOGERIATRIC SERVICES IN THE FACE OF COVID-19. Age Ageing 2021. [PMCID: PMC8690012 DOI: 10.1093/ageing/afab219.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Nationally agreed standards improve the level of care delivered to all older, frail, multi-morbid patients presenting with hip fractures. Dedicated Orthogeriatric services allow for these standards to be achieved in a multi-disciplinary team (MDT) setting. As the COVID-19 pandemic reached our shores, the model of care set out by the Irish Hip Fracture Standards (IHFS) was under threat. Our dedicated Orthopaedic Trauma ward became an acute COVID ward and the Orthogeriatric service was re-deployed to acute medicine for Quarter 2. Methods Using the Irish Hip Fracture Database, local data was analysed and compared with national data from Quarter 1 to 4 (Q1–4) in 2020. Results When comparing local IHFS’s with national figures, ongoing challenges and future goals are highlighted. In 2020, there were 222 hip fracture patients (mean age 81.8 years) in our hospital. Standard 1, time to the ward <4 hours, stands at 71% locally (national average 33%). Standard 2, time to theatre <48 hours, is an ongoing challenge and remains at 66% (national average 75%). Standard 3, pressure ulcer rate, was the same as the national average at 3%. Standards 4, 5 and 6 in our hospital stand at 87% (national averages of 82%, 91% and 85% respectively). In Q1, 56%, or over 1 in every 2 patients with hip fractures, met all of the Irish Hip Fracture Standards in our hospital. In Q2, only 18% of patients met all of the IHFS’s. Q3 saw improvements with 47% of all hip fracture patients achieving all IHFS’s. Q4 showed maintenance with 45% of all patients achieving all IHFS’s. Conclusion These findings highlight the need for a dedicated Orthogeriatric Service and Orthopaedic ward at all times. Going forward with the risk of future waves and the emergence of new variants, every effort should be made to maintain a comprehensive orthogeriatric service to minimise a negative impact on patient care.
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Affiliation(s)
- N Davey
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - A McFeely
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - P Doyle
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - A Stankard
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - S Coveney
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - N Alsubie
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - J O'Connor
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - B Conlon
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - P Monahan
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - P Byrne
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - D Britton
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - T Halpin
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - S McShane
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - I Sohail
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - O Lynch
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - M Basit
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - B NiBhuachalla
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - M Mulroy
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
| | - H O'Brien
- Our Lady of Lourdes Hospital Drogheda, Drogheda, Ireland
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Lloyd TD, Neal‐Smith G, Fennelly J, Claireaux H, Bretherton C, Carr AJ, Murphy M, Kendrick BJ, Palmer AJR, Wong J, Sharma P, Osei‐Bonsu PK, Ashcroft G, Baigent T, Shirland E, Espey R, Stokes M, Liew I, Dhawal A, Watchorn D, Lum J, Qureshi M, Khaled AS, Kauser S, Hodhody G, Rogers S, Haywood‐Alexander B, Sheikh G, Mahapatra P, Twaij H, Chicco M, Arnaout F, Atherton T, Mutimer J, Sinha P, Oliver E, Stedman T, Gadd R, Kutuzov V, Sattar M, Robiati L, Plastow R, Howe T, Hassan A, Lau B, Collins J, Doshi A, Tan G, Baskaran D, Hari Sunil Kumar K, Agarwal R, Horner M, Gwyn R, Masud S, Beaumont O, Pilarski A, Lebe M, Dawson‐Bowling S, Nolan D, Tsitskaris K, Beamish RE, Jordan C, Alsop S, Hibbert E, Deshpande G, Gould A, Briant‐Evans T, Kilbane L, Crowther I, Ingoe H, Naisbitt A, Gourbault L, Muscat J, Goh EL, Gill J, Elbashir M, Modi N, Archer J, Ismael S, Petrie M, O'Brien H, McCormick M, Koh NP, Lloyd T, King A, Ikram A, Peake J, Yoong A, Rye DS, Newman M, Naraen A, Myatt D, Kapur R, Sgardelis P, Kohli S, Culverhouse‐Mathews M, Haynes S, Boden H, Purmah A, Shenoy R, Raja S, Koh NP, Donovan R, Yeomans D, Ritchie D, Larkin R, Aladwan R, Hughes K, Unsworth R, Cooke R, Samra I, Barrow J, Michael K, Byrne F, Anwar R, Karatzia L, Drysdale H, Wilson H, Jones R, Dass D, Liaw F, Aujla R, Kheiran A, Bell K, Ramavath AL, Telfer R, Nachev K, Lawrence H, Garg V, Shenoy P, Lacey A, Byrom I, Simons M, Manning C, Cheyne N, Williams J. Peri‐operative administration of tranexamic acid in lower limb arthroplasty: a multicentre, prospective cohort study. Anaesthesia 2020; 75:1050-1058. [DOI: 10.1111/anae.15056] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2020] [Indexed: 12/20/2022]
Affiliation(s)
- T. D. Lloyd
- Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK
- Oxford Surgical Collaborative for Audit and Research Oxford UK
| | - G. Neal‐Smith
- Oxford Surgical Collaborative for Audit and Research Oxford UK
| | - J. Fennelly
- Oxford Surgical Collaborative for Audit and Research Oxford UK
| | - H. Claireaux
- Oxford Surgical Collaborative for Audit and Research Oxford UK
| | - C. Bretherton
- Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK
- Oxford Surgical Collaborative for Audit and Research Oxford UK
| | - A. J. Carr
- Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK
| | - M. Murphy
- University of Oxford UK
- NHS Blood and Transplant Oxford UK
| | - B. J. Kendrick
- Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK
| | - A. J. R. Palmer
- Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK
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O'Brien H, Hyland C, Schoeman E, Millard G, Hyett J, Flower R, Gardener G. Droplet digital PCR for the determination of fetal red cell antigens in pregnancy. Pathology 2018. [DOI: 10.1016/j.pathol.2017.12.290] [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: 11/29/2022]
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Brown P, Whiteside BJ, Beek TJ, Fox P, Horbury TS, Oddy TM, Archer MO, Eastwood JP, Sanz-Hernández D, Sample JG, Cupido E, O'Brien H, Carr CM. Space magnetometer based on an anisotropic magnetoresistive hybrid sensor. Rev Sci Instrum 2014; 85:125117. [PMID: 25554336 DOI: 10.1063/1.4904702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report on the design and development of a low resource, dual sensor vector magnetometer for space science applications on very small spacecraft. It is based on a hybrid device combining an orthogonal triad of commercial anisotropic magnetoresistive (AMR) sensors with a totem pole H-Bridge drive on a ceramic substrate. The drive enables AMR operation in the more sensitive flipped mode and this is achieved without the need for current spike transmission down a sensor harness. The magnetometer has sensitivity of better than 3 nT in a 0-10 Hz band and a total mass of 104 g. Three instruments have been launched as part of the TRIO-CINEMA space weather mission, inter-calibration against the International Geomagnetic Reference Field model makes it possible to extract physical signals such as field-aligned current deflections of 20-60 nT within an approximately 45,000 nT ambient field.
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Affiliation(s)
- P Brown
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - B J Whiteside
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - T J Beek
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - P Fox
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - T S Horbury
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - T M Oddy
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - M O Archer
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - J P Eastwood
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | | | - J G Sample
- Space Sciences Laboratory, University of California, Berkeley, California 94720, USA
| | - E Cupido
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - H O'Brien
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - C M Carr
- Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
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Qasim A, O'Brien H, Sebastian S, O'Sullivan M, Buckley M, O'Moran C. Platelet activation in patients with irritable bowel syndrome may reflect a subclinical inflammatory response. Gut 2003; 52:1799-800. [PMID: 14633969 PMCID: PMC1773872 DOI: 10.1136/gut.52.12.1799-a] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
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Affiliation(s)
- C J Duffy
- Departments of Neurology, Ophthalmology, Neurobiology and Anatomy, and Brain and Cognitive Sciences, University of Rochester Medical Center, Rochester, New York 14642, USA
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Coulthard SA, Rabello C, Robson J, Howell C, Minto L, Middleton PG, Gandhi MK, Jackson G, McLelland J, O'Brien H, Smith S, Reid MM, Pearson AD, Hall AG. A comparison of molecular and enzyme-based assays for the detection of thiopurine methyltransferase mutations. Br J Haematol 2000; 110:599-604. [PMID: 10997970 DOI: 10.1046/j.1365-2141.2000.02218.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [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: 11/20/2022]
Abstract
S-Methylation by thiopurine methyltransferase (TPMT) is an important route of metabolism for the thiopurine drugs. About one in 300 individuals are homozygous for a TPMT mutation associated with very low enzyme activity and severe myelosuppression if treated with standard doses of drug. To validate the use of molecular genetic techniques for the detection of TPMT deficiency, we have determined red blood cell TPMT activity in 240 adult blood donors and 55 normal children. Genotype was determined by restriction fragment length analysis of polymerase chain reaction products in a cohort of 79 of the blood donors and five cases of azathioprine-induced myelosupression, and this confirmed a close relationship between genotype and phenotype. In 17 of the 24 cases in which mutations were found, DNA was also available from remission bone marrow. In one of these cases, DNA from the remission marrow sample indicated the presence of a non-mutated allele that had not been seen in the blast DNA sample obtained at presentation. These results indicate that polymerase chain reaction-based assays give reliable and robust results for the detection of TPMT deficiency, but that caution should be exercised in relying exclusively on DNA obtained from lymphoblasts in childhood leukaemia.
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Affiliation(s)
- S A Coulthard
- The LRF Molecular Pharmacology Specialist Programme, Medical School, Newcastle Upon Tyne, UK
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12
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O'Brien H, Matthew JA, Gee JM, Watson M, Rhodes M, Speakman CT, Stebbings WS, Kennedy HJ, Johnson IT. K-ras mutations, rectal crypt cells proliferation, and meat consumption in patients with left-sided colorectal carcinoma. Eur J Cancer Prev 2000; 9:41-7. [PMID: 10777009 DOI: 10.1097/00008469-200002000-00006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 01/23/2023]
Abstract
It has been suggested that N-nitroso compounds derived from meat may increase the risk of K-ras mutations in the human colon. We sought evidence of associations between red meat consumption, frequency and type of K-ras mutations in resected tumours, and the rate of crypt cell proliferation (CCP) in the normal mucosa of patients with left-sided colorectal carcinoma. Meat consumption was assessed by food frequency questionnaire, and CCP was determined in rectal biopsies obtained prior to surgery. K-ras mutations in the resected tumours were determined using a PCR-based oligonucleotide hybridization assay. Fifteen K-ras mutations were detected in tumours from 43 patients; 13/15 in codon 12, 3/15 in codon 13, and 1/15 in both codons 12 and 13. All mutations were G-->A or G-->T transitions. There was no statistically significant difference between intakes of red meat in patients with a K-ras mutation (92.4 +/- 9.7 g/day) and those without (82.3 +/- 7.7 g/day). Rectal CCP was significantly higher in patients than in healthy controls, but there was no correlation with meat consumption or K-ras mutation. These data do not support the hypothesis that meat consumption is a risk factor for acquisition of K-ras mutations during colorectal carcinogenesis.
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Affiliation(s)
- H O'Brien
- Institute of Food Research, Norwich Laboratory, Norwich Research Park, Colney, UK
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13
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Abstract
Of 15 patients with fibromyalgia who were first evaluated for the presence of Axis I psychiatric diagnoses by use of the Structured Clinical Interview for DSM-IV, 11 completed an open 8-week trial with the novel antidepressant venlafaxine. Six (55%) of 11 completers experienced a > or = 50% reduction of fibromyalgia symptoms. The presence of lifetime psychiatric disorders, particularly depressive and anxiety disorders, predicted a positive response to venlafaxine. These findings suggest that it is important to assess for comorbid psychiatric disorders in patients with fibromyalgia and that venlafaxine may be helpful to some of these patients.
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Affiliation(s)
- M M Dwight
- Department of Psychiatry, University of Cincinnati, Ohio, USA
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14
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O'Brien H. Impact of new education requirements on recertifiers. Can J Infect Control 1995; 10:97. [PMID: 8555518] [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: 05/22/2023]
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15
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Abstract
PURPOSE The authors evaluated a geographic and temporal cluster of lower respiratory tract infections due to unencapsulated (serologically nontypeable) Haemophilus influenzae to determine whether this event represented the transmission of a single clone. METHODS AND MATERIALS H influenzae was recovered from eight patients at a nursing home and from three patients in an adjacent acute care hospital. Serotypes, biotypes, outer membrane protein profiles, and multilocus enzyme genotypes were determined to characterize bacterial isolates. Patient records were retrospectively examined to determine clinical and epidemiologic characteristics. RESULTS During a 10-day period in September 1991, lower respiratory tract infections caused by H influenzae were diagnosed in four patients residing in a single nursing home unit. Oropharyngeal cultures from four of seven asymptomatic roommates of these patients also grew H influenzae. During the month before and after the nursing home cluster of cases, four other individuals in acute care areas of the hospital had positive sputum cultures for H influenzae. Three of these latter specimens were also available for analysis. All H influenzae isolates were unencapsulated and beta-lactamase-negative. Eight of the nine isolates from the nursing home patients (two morphologically distinct colony types of H influenzae were isolated from one case) had a single outer membrane protein profile arbitrarily designated as X and a single multilocus enzyme genotype arbitrarily designated as A. In contrast, none of the isolates from the acute care cases had this profile (P < or = 0.02; two-tailed Fisher's exact test). The isolates obtained from two of the patients in acute care areas had an outer membrane protein profile arbitrarily designated as Y and a single multilocus enzyme genotype designated as B. These two patients were contemporaneously hospitalized in adjacent intensive care unit cubicles. The remaining isolates displayed an outer membrane protein profile arbitrarily designated as W. All roommates of the four patients in the nursing home were administered oral rifampin 600 mg daily for 4 days. H influenzae was not recovered from follow-up oropharyngeal cultures obtained 1 week after the completion of therapy. No beta-lactamase-negative H influenzae were identified in this unit during the subsequent 9 months. CONCLUSION This study furnishes strong evidence for the nosocomial transmission of a clone of unencapsulated H influenzae in a nursing home unit. Epidemiologic data showed temporal and geographic clustering of respiratory tract infections and colonization by H influenzae. Outer membrane protein profiles and multilocus enzyme genotype analysis indicated that seven of eight patients at the nursing home carried a single clone of unencapsulated H influenzae. Laboratory and epidemiologic data also demonstrated the presence, and possible nosocomial transmission, of a second clone of unencapsulated H influenzae in a physically separate area of the hospital. Finally, although a causal relationship is not proven, the outbreak ended following the administration of rifampin prophylaxis of asymptomatic carriers.
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Affiliation(s)
- M B Goetz
- Department of Medicine, Sepulveda Veterans Administration Medical Center, California 91343
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16
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O'Brien H. Hib immunisation catch up programme in North East Thames. Commun Dis Rep CDR Rev 1994; 4:R17-8. [PMID: 7511460] [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] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- H O'Brien
- North East Thames Regional Health Authority
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17
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Abstract
The alpha 1-adrenoceptor-mediated responses of the rat prostate to phenylephrine have been examined in-vitro. Phenylephrine induced concentration-dependent contractions of the isolated prostate gland which were antagonized by WB4101 (1-30 nM). Schild plot analysis of the antagonism yielded a straight line with a slope not significantly different from unity. The pKB value of 9.2 was similar to that obtained for WB4101 on the rat vas deferens (9.4) but was greater than that obtained on the rat spleen (8.4). Chloroethylclonidine depressed responses to phenylephrine of the rat spleen but not the prostate or the vas deferens. These results indicate that the rat prostate gland possesses a typical alpha 1A-adrenoceptor similar to that found in the vas deferens.
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Affiliation(s)
- C Couldwell
- Department of Biomedical Science, University of Sheffield, UK
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18
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Miller DR, Martineau RJ, O'Brien H, Hull KA, Oliveras L, Hindmarsh T, Greenway D. Effects of alfentanil on the hemodynamic and catecholamine response to tracheal intubation. Anesth Analg 1993; 76:1040-6. [PMID: 8484505 DOI: 10.1213/00000539-199305000-00023] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.1] [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: 01/31/2023]
Abstract
A randomized, placebo-controlled study was conducted in 60 ASA Class I, II, and III patients to determine the dose response of alfentanil in moderating the cardiovascular and catecholamine response to tracheal intubation (INT). Patients were randomly allocated into one of four groups to receive either 15 micrograms/kg alfentanil (A15), 30 micrograms/kg alfentanil (A30), 45 micrograms/kg alfentanil (A45), or normal saline (control), given intravenously (i.v.) before induction of anesthesia. One minute after administration of 4.0 mg/kg thiopental and 1.5 mg/kg succinylcholine i.v., tracheal intubation was performed using direct laryngoscopy. In response to INT, increases in heart rate, systolic blood pressure, and systemic vascular resistance occurred in the control group. These changes were significantly more than corresponding changes of heart rate, systolic blood pressure, and systemic vascular resistance in all three alfentanil groups (P < 0.05). In contrast, cardiac index and ejection fraction decreased moderately in every group during the study period, but there were no differences among groups with respect to either cardiac index or ejection fraction at corresponding times following INT. In the control group, epinephrine and norepinephrine serum concentrations increased by 152 +/- 52% and 58 +/- 62%, respectively, following INT (different from A30 and A45, P < 0.05). However, up to a dose of 30 micrograms/kg (A30), a dose-dependent decrease in the maximum percent changes of both epinephrine and norepinephrine occurred in response to INT. A larger dose of alfentanil was no more efficacious as the catecholamine response to tracheal intubation was not significantly different when comparing the A45 and A30 groups.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- D R Miller
- Department of Anesthesia, Ottawa General Hospital, Ontario, Canada
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19
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Abstract
PURPOSE Following implementation of special measures to control a nosocomial outbreak of methicillin-resistant Staphylococcus aureus (MRSA), we used immunoblot typing in conjunction with antimicrobial susceptibility testing to investigate the epidemiology of this event and to determine whether this outbreak represented the failure of infection control measures to limit the spread of previously endemic MRSA strains or the introduction of a new strain of MRSA. MATERIALS AND METHODS Isolates of MRSA recovered from hospitalized patients were initially categorized on the basis of antimicrobial susceptibility results. Organisms susceptible to ciprofloxacin and/or trimethoprim/sulfamethoxazole were recovered from patients at a relatively constant rate prior to December 1988 and were categorized as endemic isolates. Subsequently, there was an outbreak due to organisms resistant to both of these antibiotics; these were therefore categorized as outbreak isolates. Isolates were later characterized by immunoblot typing. Prior to this analysis, isolates were given code numbers so that clinical and epidemiologic data as well as resistance patterns were not known until this testing was complete. RESULTS Between January 1986 and November 1988, an average of 3.9 patients per month acquired nosocomial MRSA in the Sepulveda Veterans Administration Medical Center. In contrast, from December 1988 to October 1989, 369 MRSA isolates were collected from 125 patients (an average of 11.4 patients per month). Prior to December 1988, all tested nosocomial isolates of MRSA were susceptible to ciprofloxacin and/or to trimethoprim/sulfamethoxazole. In contrast, the outbreak was due to spread of MRSA isolates resistant to these antibiotics. Immunoblot typing of 204 isolates from 98 individuals identified five distinct immunoblot types of which types B and C were by far the most common. Type B was highly associated with outbreak isolates, whereas type C was associated with endemic isolates (p less than 0.001). All sequential isolates from single patients that belonged to different susceptibility categories demonstrated discordant immunoblot types. In contrast, concordant immunoblot types were observed for 25 of 27 sequential isolates that displayed minor variations in antimicrobial resistance. The institution of more stringent infection control measures was followed by the return of nosocomial MRSA acquisition rates to pre-outbreak levels. Although novobiocin and trimethoprim/sulfamethoxazole were extensively used to treat patients harboring outbreak and endemic isolates, respectively, in no instance was the initial MRSA isolate from any patient resistant to novobiocin and only 6% of initial endemic isolates displayed trimethoprim/sulfamethoxazole resistance. A modest, significant increase in the resistance of endemic isolates to various other antimicrobial agents was noted however. CONCLUSION Immunoblot analyses provided strong, corroborative evidence that at least two separate strains of MRSA were present during the outbreak and that a newly introduced strain with a distinctive antimicrobial resistance pattern was primarily responsible for the rapid spread of MRSA during the outbreak. The observation that previously effective infection control measures failed to prevent the nosocomial spread of a newly introduced community-acquired MRSA strain suggests that a single set of control measures may not be equally efficacious against all strains of MRSA. In this regard, previously reported variations in resistance to topical antimicrobials and/or antiseptics, and differences in virulence factors such as colonization potential, invasiveness, and survival on fomites, may warrant further study. Control of the outbreak strain of MRSA in our institution did occur after the implementation of more strenuous isolation procedures.(ABSTRACT TRUNCATED)
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Affiliation(s)
- M B Goetz
- Department of Medicine, Sepulveda Veterans Administration Medical Center, California 91343
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20
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Abstract
We report the case of a teenage boy with thrombocytopenia complicating varicella infection, which responded promptly to treatment with intravenous immunoglobulin therapy. Such treatment is well recognized in the management of immune thrombocytopenia, particularly where steroids are contra-indicated, but we have not found any previous case reports of the use of immunoglobulin in this condition.
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Affiliation(s)
- D M Large
- Department of Medicine, Cumberland Infirmary, Carlisle, UK
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21
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West HI, Mustafa MG, Lanier RG, O'Brien H. Interpretation of ion-range recoil data obtained from activated-foil measurements of nuclear excitation functions. Phys Rev C Nucl Phys 1991; 43:1352-1362. [PMID: 9967174 DOI: 10.1103/physrevc.43.1352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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22
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Mustafa MG, West HI, O'Brien H, Lanier RG, Benhamou M, Tamura T. Measurements and a direct-reaction-plus-Hauser-Feshbach analysis of 89Y(p,n)89Zr, 89Y(p,2n)88, and 89Y(p,pn)88Y reactions up to 40 MeV. Phys Rev C Nucl Phys 1988; 38:1624-1637. [PMID: 9954974 DOI: 10.1103/physrevc.38.1624] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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23
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Abstract
A 13-yr-old girl with congenital haemolytic anaemia associated with pseudo-homozygous hypercholesterolaemia is described. The erythrocyte morphology showed 50-80% stomatocytes, but no abnormality of membrane lipid or protein composition or of cation transport was detected. The platelets were reduced in number, abnormally large and showed reduced adhesion. Successful treatment of the hypercholesterolaemia did not influence the stomatocytosis.
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Abstract
A distinct and previously undescribed haematological picture was noted in three patients with hypothermia. During hypothermia there was anaemia with reduced normoblastic erythropoiesis, marked sideroblastic change and thrombocytopenia in the presence of a normal number of megakaryocytes. In two patients as the body temperature returned to normal these changes were slowly reversed. Evidence both from observations in patients and from animal experiments is given why the haematological changes are due to the hypothermia.
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Abstract
The laboratory diagnosis of autoimmune thrombocytopenia has only recently become more satisfactory. In this study a fluorescein-labelled antiglobulin technique was used to investigate the immunochemical properties of the platelet antibody detected in a pregnant woman with severe thrombocytopenia. The antibody was autoimmune and appeared to have specificity for platelet antigens. It had both IgG and IgM components and did not fix complement. Steroids had a beneficial effect indicated by a return to normal of the platelet count, a falling antibody titre and the disappearance of detectable antibody on the patient's own platelets. Studies on the baby showed that the antibody had not crossed the placenta in detectable amounts.
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Abstract
Hydrolysis of pyridoxal phosphate in plasma was demonstrated in patients with liver disease and other conditions with raised alkaline phosphatase, and this usually closely paralleled the alkaline phosphatase level, whether of liver or bone origin. The endogenous plasma pyridoxal phosphate was inversely related to the alkaline phosphatase, and plasma hydrolysis of pyridoxal phosphate may at least in part be responsible. Very large doses of vitamin B6 may be necessary to compensate for this hydrolysis.
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King R, Poyzer K, Paver K, O'Brien H. Photochemotherapy in psoriasis: the first six months in Australia. Med J Aust 1979; 1:5-7. [PMID: 763199 DOI: 10.5694/j.1326-5377.1979.tb111931.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The results of the first six months of treatment of psoriasis with photochemotherapy in the Skin and Cancer Foundation's clinic resulted in 30 out of 53 patients being completely clear of psoriasis lesions, 14 showing progressive improvement (and subsequently clearing), four failures, and five withdrawals. The treatment is not a cure, and requires maintenance therapy. It involves the use of large expensive machines to deliver ultraviolet light, and demands careful supervision and control dosimetry.
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Abstract
A newborn male infant, whose karyotype was 46,XY,del(10)(p13) is presented. The clinical features included cleft lip and palate, preauricular pits, low set malpositioned auricles, antimongoloid slant of the eyes, microcephaly, micrognathia, congenital heart disease, hypertrophic pyloric stenosis, cryptorchidism, and abnormal dermatoglyphics. The child died at the age of 3 months in overwhelming urinary infection with septicemic complications. It is suggested that the features described here may represent a new, clinically recognizable chromosomal syndrome.
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30
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Castellanos A, O'Brien H, Castillo CA, Myerburg RJ, Beffler B. Contribution of His bundle recordings to analysis of abnormal beats with right bundle-branch block--superior axis pattern. Br Heart J 1972; 34:795-9. [PMID: 4115989 PMCID: PMC486983 DOI: 10.1136/hrt.34.8.795] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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