5 results on '"Powell, JT"'
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2. Outcomes after endovascular or open repair for degenerative descending thoracic aortic aneurysm using linked hospital data.
- Author
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von Allmen RS, Anjum A, and Powell JT
- Subjects
- Aged, Aortic Aneurysm, Thoracic mortality, Aortic Rupture mortality, Cause of Death, Emergency Treatment mortality, Endovascular Procedures mortality, England epidemiology, Female, Hospital Mortality, Humans, Male, Middle Aged, Reoperation mortality, Stents, Aortic Aneurysm, Thoracic surgery, Aortic Rupture surgery, Medical Record Linkage
- Abstract
Background: The population-based effectiveness of thoracic endovascular aortic repair (TEVAR) versus open surgery for descending thoracic aortic aneurysm remains in doubt., Methods: Patients aged over 50 years, without a history of aortic dissection, undergoing repair of a thoracic aortic aneurysm between 2006 and 2011 were assessed using mortality-linked individual patient data from Hospital Episode Statistics (England). The principal outcomes were 30-day operative mortality, long-term survival (5 years) and aortic-related reinterventions. TEVAR and open repair were compared using crude and multivariable models that adjusted for age and sex., Results: Overall, 759 patients underwent thoracic aortic aneurysm repair, mainly for intact aneurysms (618, 81·4 per cent). Median ages of TEVAR and open cohorts were 73 and 71 years respectively (P < 0·001), with more men undergoing TEVAR (P = 0·004). For intact aneurysms, the operative mortality rate was similar for TEVAR and open repair (6·5 versus 7·6 per cent; odds ratio 0·79, 95 per cent confidence interval (c.i.) 0·41 to 1·49), but the 5-year survival rate was significantly worse after TEVAR (54·2 versus 65·6 per cent; adjusted hazard ratio 1·45, 95 per cent c.i. 1·08 to 1·94). After 5 years, aortic-related mortality was similar in the two groups, but cardiopulmonary mortality was higher after TEVAR. TEVAR was associated with more aortic-related reinterventions (23·1 versus 14·3 per cent; adjusted HR 1·70, 95 per cent c.i. 1·11 to 2·60). There were 141 procedures for ruptured thoracic aneurysm (97 TEVAR, 44 open), with TEVAR showing no significant advantage in terms of operative mortality., Conclusion: In England, operative mortality for degenerative descending thoracic aneurysm was similar after either TEVAR or open repair. Patients who had TEVAR appeared to have a higher reintervention rate and worse long-term survival, possibly owing to cardiopulmonary morbidity and other selection bias., (© 2014 BJS Society Ltd. Published by John Wiley & Sons Ltd.)
- Published
- 2014
- Full Text
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3. Incidence of descending aortic pathology and evaluation of the impact of thoracic endovascular aortic repair: a population-based study in England and Wales from 1999 to 2010.
- Author
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von Allmen RS, Anjum A, and Powell JT
- Subjects
- Age Factors, Aged, Aortic Dissection mortality, Aortic Dissection pathology, Aortic Aneurysm, Thoracic mortality, Aortic Aneurysm, Thoracic pathology, England epidemiology, Female, Humans, Incidence, Linear Models, Male, Middle Aged, Patient Admission statistics & numerical data, Sex Factors, Survival Analysis, Time Factors, Treatment Outcome, Wales epidemiology, Aortic Dissection surgery, Aortic Aneurysm, Thoracic surgery, Endovascular Procedures adverse effects, Endovascular Procedures mortality, Vascular Surgical Procedures adverse effects, Vascular Surgical Procedures mortality
- Abstract
Objectives: To investigate population trends in thoracic aortic disease (dissections and aneurysms) in England and Wales, with focus on the impact of thoracic endovascular aortic repair on procedure numbers and age at repair., Materials and Methods: Routine hospital statistics of England and Wales provided admission, procedure and mortality data from 1999 to 2010. All data were age-standardised, reported per 100,000 population, by age bands (>50 years or 50-74 years versus 75+ years) and gender. Only patients 50+ years were included, to focus on degenerative disease., Results: Between 1999 and 2010 hospital admissions for total (ascending and descending) have risen steadily for thoracic aortic dissection (TAD) from 7.2 to 8.8 and thoracic aortic aneurysm (TAA) from 4.4 to 9.0, principally attributable to increased admissions in those 75+ years. Total mortality declined steadily over the same period, for TAD from 4.4 to 3.2 and for TAA from 10.4 to 7.5. Procedure rates have risen sharply, driven by the implementation of TEVAR from 2006, for type B dissection from 0.06 to 0.53 and for descending TAA from 0.76 to 1.89. All figures are per 100,000 population with P <0.005., Conclusion: Improvements in case ascertainment may have contributed to the increase in hospital admissions. The increased application of TEVAR, particularly for dissections, is mainly in those above 75 years and has not yet translated into an accelerated survival benefit., (Copyright © 2012 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2013
- Full Text
- View/download PDF
4. Explaining the decrease in mortality from abdominal aortic aneurysm rupture.
- Author
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Anjum A, von Allmen R, Greenhalgh R, and Powell JT
- Subjects
- Aged, Aged, 80 and over, England epidemiology, Female, Hospitalization statistics & numerical data, Humans, Hypercholesterolemia mortality, Hypertension mortality, Incidence, Male, Middle Aged, Smoking mortality, Wales epidemiology, Aortic Aneurysm, Abdominal mortality, Aortic Rupture mortality
- Abstract
Background: A steady rise in mortality from abdominal aortic aneurysm (AAA) was reported in the 1980s and 1990 s, although this is now declining rapidly. Reasons for the recent decline in mortality from AAA rupture are investigated here., Methods: Routine statistics for mortality, hospital admissions and procedures in England and Wales were investigated. All data were age-standardized. Trends in smoking, hypertension and treatment for hypercholesterolaemia (statins), together with regression coefficients for mortality, were available from public sources for those aged at least 65 years. Deaths from ruptured AAA avoided in this age group were estimated by using the IMPACT equation: deaths avoided = (deaths in index year) × (risk factor decline) × β-coefficient., Results: From 1997, deaths from ruptured AAA have decreased sharply, almost twofold in men. Hospital admissions for elective AAA repair have increased modestly (from 40 to 45 per 100,000 population), attributable entirely to more procedures in those aged 75 years and over (P < 0.001). Admissions for ruptured AAA have declined from 18.6 to 13.5 per 100,000 population, across all ages, with the proportion offered and surviving emergency repair unchanged. From 1997, mortality from ruptured aneurysm in those aged at least 65 years has fallen from 65.9 to 44.6 per 100,000 population. An estimated 8-11 deaths per 100,000 population were avoided by a reduced prevalence of smoking and a similar number from an increase in the number of elective AAA repairs. Estimates for the effects of blood pressure and lipid control are uncertain., Conclusion: The reduction in incidence of ruptured AAA since 1997 is attributable largely to changes in smoking prevalence and increases in elective AAA repair in those aged 75 years and over., (Copyright © 2012 British Journal of Surgery Society Ltd. Published by John Wiley & Sons, Ltd.)
- Published
- 2012
- Full Text
- View/download PDF
5. Is the incidence of abdominal aortic aneurysm declining in the 21st century? Mortality and hospital admissions for England & Wales and Scotland.
- Author
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Anjum A and Powell JT
- Subjects
- Age Factors, Aged, Aged, 80 and over, Aortic Aneurysm, Abdominal surgery, England epidemiology, Female, Hospitalization trends, Humans, Incidence, Male, Middle Aged, Scotland epidemiology, Sex Factors, Vascular Surgical Procedures statistics & numerical data, Vascular Surgical Procedures trends, Wales epidemiology, Aortic Aneurysm, Abdominal mortality, Hospitalization statistics & numerical data
- Abstract
Background: Between 1951 and 1995 there was a steady increase in age-standardised deaths from all aortic aneurysms in men, from 2 to 56 per 100,000 population in England & Wales, supporting an increase in incidence. More recently, evidence from Sweden and elsewhere suggests that now the incidence of abdominal aortic aneurysm (AAA) may be declining., Methods: National statistics for hospital admissions and deaths from AAA, after population age-standardisation, were used to investigate current trends in England & Wales and Scotland., Results: Between 1997 and 2009 there has been a reduction in age-adjusted mortality from AAA from 40.4 to 25.7 per 100,000 population for England & Wales and from 30.1 to 20.8 per 100,000 population in Scotland. The decrease in mortality was more marked for men than women. Mortality decreased more than 2-fold in those <75 years versus 25% only in those >75 years. During this same time period the elective hospital admissions for AAA repair have only increased in the population >75 years., Conclusions: These data suggest that the age at which clinically-relevant aneurysms present has increased by 5-10 years and that incidence of clinically-relevant AAA in men in England & Wales and Scotland is declining rapidly. The reasons for this are unclear., (Copyright © 2011 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2012
- Full Text
- View/download PDF
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