10 results on '"Maddox JM"'
Search Results
2. Preventing Cardiac Damage in Patients Treated for Breast Cancer and Lymphoma: The PROACT Clinical Trial.
- Author
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Austin D, Maier RH, Akhter N, Sayari M, Ogundimu E, Maddox JM, Vahabi S, Humphreys AC, Graham J, Oxenham H, Haney S, Cresti N, Verrill M, Osborne W, Wright KL, Goranova R, Bailey JR, Kalakonda N, Macheta M, Kilner MF, Young ME, Morley NJ, Neelakantan P, Gilbert G, Thomas BK, Graham RJ, Fujisawa T, Mills NL, Hildreth V, Prichard J, Kasim AS, Hancock HC, and Plummer C
- Abstract
Background: Cardiotoxicity is a concern for cancer survivors undergoing anthracycline chemotherapy. Enalapril has been explored for its potential to mitigate cardiotoxicity in cancer patients. The dose-dependent cardiotoxicity effects of anthracyclines can be detected early through the biomarker cardiac troponin., Objectives: The PROACT (Preventing Cardiac Damage in Patients Treated for Breast Cancer and Lymphoma) clinical trial assessed the effectiveness of enalapril in preventing cardiotoxicity, manifesting as myocardial injury and cardiac function impairment, in patients undergoing high-dose anthracycline-based chemotherapy for breast cancer or non-Hodgkin lymphoma., Methods: This prospective, multicenter, open-label, randomized controlled trial employed a superiority design with observer-blinded endpoints. A total of 111 participants, scheduled for 6 cycles of chemotherapy with a planned dose of ≥300 mg/m
2 doxorubicin equivalents, were randomized to receive either enalapril (titrated up to 20 mg daily) or standard care without enalapril., Results: Myocardial injury, indicated by cardiac troponin T (≥14 ng/L), during and 1 month after chemotherapy, was observed in 42 (77.8%) of 54 patients in the enalapril group vs 45 (83.3%) of 54 patients in the standard care group (OR: 0.65; 95% CI: 0.23-1.78). Injury detected by cardiac troponin I (>26.2 ng/L) occurred in 25 (47.2%) of 53 patients on enalapril compared with 24 (45.3%) of 53 in standard care (OR: 1.10; 95% CI: 0.50-2.38). A relative decline of more than 15% from baseline in left ventricular global longitudinal strain was observed in 10 (21.3%) of 47 patients on enalapril and 9 (21.9%) of 41 in standard care (OR: 0.95; 95% CI: 0.33-2.74). An absolute decline of >10% to <50% in left ventricular ejection fraction was seen in 2 (4.1%) of 49 patients on enalapril vs none in patients in standard care., Conclusions: Adding enalapril to standard care during chemotherapy did not prevent cardiotoxicity in patients receiving high-dose anthracycline-based chemotherapy. (PROACT: Can we prevent Chemotherapy-related Heart Damage in Patients With Breast Cancer and Lymphoma?; NCT03265574)., Competing Interests: This work was supported by the National Institute for Health and Care Research (PB-PG-0815-20061). Dr Gilbert was supported by a grant from JGW Patterson Foundation. Dr Mills was supported by a Chair Award (CH/F/21/90010), Programme Grant (RG/20/10/34966), and Research Excellence Award (RE/24/130012) from the British Heart Foundation. Dr Austin has received speaker fees from Philips Volcano, AstraZeneca, and Pfizer; and research grants awarded to Newcastle University from TA Sciences, Kancera, and AstraZeneca. Dr Maier has received research grants awarded to Newcastle University from TA Sciences, Kancera, and AstraZeneca. Dr Maddox has received funding to attend meetings from Novartis and AbbVie. Dr Mills has received research grants awarded to the University of Edinburgh from Abbott Diagnostics, Siemens Healthineers, and Roche Diagnostics, outside the submitted work; and honoraria from Abbott Diagnostics, Siemens Healthineers, Roche Diagnostics, LumiraDx, and Psyros Diagnostics. Dr Kasim was an employee of Durham University during his involvement in the PROACT trial, and is now an employee of GlaxoSmithKline. Dr Plummer has received speaker fees or travel expenses from Amgen, BeiGene, Calgene, Incyte, Ipsen, Novartis, and Servier. All other authors have reported that they have no relationships relevant to the contents of this paper to disclose., (© 2024 The Authors.)- Published
- 2024
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3. A systematic approach to transplanting non-resident, non-citizens in an established US pediatric lung transplant program.
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Alhaider S, Maddox JM, Heinle JS, Shebaro I, and Mallory GB
- Abstract
Introduction: The Texas Children's Hospital Lung Transplant Program undertook consideration of its first non-resident, non-citizen for lung transplantation in 2011., Methods: Four referrals from the Royal Embassy of Saudi Arabia were received, and two patients were evaluated from 2011 to 2013., Results: After a suitable candidate and family was identified, the program adopted a systematic approach to ensure that all the necessary elements of pre-transplant care, informed consent, and post-transplant care could be effectively delivered., Conclusion: The use of hospital translation services and the development of a strong professional relationship with a well-trained pediatric respirologist in Saudi Arabia combined with an excellent early post-transplant clinical course provide lessons that may be of help to other transplant programs considering international patients as candidates for solid organ transplantation., (© 2021 Publishing services provided by Elsevier B.V. on behalf of King Faisal Specialist Hospital & Research Centre (General Organization), Saudi Arabia.)
- Published
- 2022
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4. DECC (dexamethasone, etoposide, chlorambucil, lomustine) as an oral chemotherapy regimen in relapsed and refractory diffuse large B-cell lymphoma.
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Maddox JM, Horan M, Tafesh L, Shrubsole C, and Osborne W
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- Administration, Oral, Adult, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols administration & dosage, Chlorambucil administration & dosage, Dexamethasone administration & dosage, Etoposide administration & dosage, Female, Humans, Lomustine administration & dosage, Male, Middle Aged, Neoplasm Recurrence, Local drug therapy, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Chlorambucil therapeutic use, Dexamethasone therapeutic use, Etoposide therapeutic use, Lomustine therapeutic use, Lymphoma, Large B-Cell, Diffuse drug therapy
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- 2021
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5. Quality assurance for point-of-care testing of oral anticoagulation: a large-scale evaluation of the Hemochron Junior Signature Microcoagulation System.
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Maddox JM, Bogo PH, McGregor E, Pippard MJ, and Kerr R
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- Administration, Oral, Humans, International Normalized Ratio standards, Quality Control, Anticoagulants administration & dosage, Blood Coagulation Tests instrumentation, Drug Monitoring instrumentation, Point-of-Care Systems, Warfarin administration & dosage
- Abstract
We report the first large-scale evaluation of the Hemochron Junior Signature (HJS) Microcoagulation System for community monitoring of oral anticoagulation and establishment of a programme of internal and external quality assurance. Over 1600 HJS results, with a simultaneous venous sample for central analysis, were obtained over a 19 month period. Monitoring of an initial period of HJS results (n = 135) revealed an International Normalized Ratio (INR) over estimation (mean +1.05), with only 27% of results within 0.5 of the central laboratory INR. A correction factor was introduced which reduced the INR bias to +0.07 and improved the percentage of results within 0.5 of the central laboratory INR to 76% (n = 353). A revised correction factor was later introduced to adjust for an under estimation at higher INR values. This changed the INR bias to -0.05, with 76% of results within 0.5 of the central laboratory INR (n = 1174). Local external quality assurance samples were distributed monthly with a total of 791 samples during the study period. 84% of test results were within 15% of the median value (range 73-97% per month). These results emphasize the value of a robust quality assurance programme when using point-of-care devices for community monitoring of oral anticoagulation.
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- 2009
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6. Management of acquired von Willebrand's syndrome in a patient requiring major surgery.
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Maddox JM, Anderson JA, Plews D, and Ludlam CA
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- Blood Loss, Surgical prevention & control, Carcinoma, Transitional Cell complications, Factor VIII therapeutic use, Humans, Immunoglobulins, Intravenous therapeutic use, Male, Middle Aged, Plasma Exchange methods, Treatment Outcome, Urinary Bladder Neoplasms complications, von Willebrand Factor therapeutic use, Carcinoma, Transitional Cell surgery, Urinary Bladder Neoplasms surgery, von Willebrand Diseases drug therapy
- Abstract
We present the case of a patient with acquired von Willebrand's syndrome and a monoclonal gammopathy of undetermined significance who required cystectomy for relapsed transitional cell carcinoma (TCC) of the bladder. We demonstrated that infused von Willebrand factor (VWF) containing factor VIII concentrates had an unacceptably short half-life, but that this was significantly prolonged following combined therapy with plasma exchange and intravenous immunoglobulin (IVIgG). This approach was successfully utilized peri-operatively, with the total surgical blood loss less than would be expected even for a haemostatically normal patient. Trough VWF antigen and Ristocetin co-factor activity levels fell on the second postoperative day and we therefore administered further IVIgG. Levels again fell on the fifth postoperative day with the development of a Staphylococcus aureus septicaemia. At this point bleeding occurred from a surgical drain site requiring 'factor VIII inhibitor bypass activity' to secure haemostasis while further plasma exchange and IVIgG were administered. Now 5 years later, there is no evidence of recurrence of the TCC or progression of the monoclonal gammopathy.
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- 2005
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7. Pneumococcal bacteraemia: clinical and microbiological epidemiology in Dundee, Scotland.
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Maddox JM and Winter JH
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- Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Drug Resistance, Microbial, Female, Humans, Incidence, Infant, Male, Microbial Sensitivity Tests, Middle Aged, Penicillin Resistance, Retrospective Studies, Scotland epidemiology, Urban Population, Bacteremia epidemiology, Pneumococcal Infections epidemiology, Streptococcus pneumoniae
- Abstract
Objective: To report the incidence of drug resistant Streptococcus pneumoniae isolated from blood culture in Dundee, Scotland. We shall also review the clinical and laboratory findings in these cases., Methods: A retrospective review was undertaken of all cases of S. pneumoniae bacteraemia identified in our local area during a three year period from August 1st, 1997 to July 31st, 2000 (107 cases.) Data was obtained from patient medical records, blood culture reports and results of Stoke's disk testing. Many organisms were also sent to the Scottish Meningococcus and Pneumococcus Reference Laboratory for serogrouping and determination of the minimum inhibitory concentration of common antibiotics., Results: Annual incidence of bacteraemia was approximately 15.9-17.8 per 100000 population. Mortality was 33% (34 and 30% for those with pneumonia or meningitis, respectively). No relationship was seen between patient age and overall mortality. Factors relating to increased mortality were a high respiratory rate (p=0.01), high blood urea level (p=0.05) and the presence of confusion (p<0.01) on admission to hospital. The incidence of penicillin resistant S. pneumoniae was 7%, all of these isolates having low level resistance. Macrolide resistance was 8%. Neither were found to be increasing over the three year period. The most common serogroups were 23 (18%) and 14 (12%)., Conclusions: The incidence of penicillin resistant S. pneumoniae isolated from blood culture in Dundee, Scotland, is similar to the UK average and did not appear to be rising between 1997 and 2000.
- Published
- 2003
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8. Relationship of volume of lesion to length of hospital stay and outcome at one year in stroke patients.
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Maddox JM, MacWalter RS, and McMahon AD
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- Age Factors, Aged, Body Height, Databases, Factual statistics & numerical data, Disability Evaluation, Female, Follow-Up Studies, Humans, Male, Multivariate Analysis, Outcome Assessment, Health Care, Recovery of Function, Retrospective Studies, Sex Factors, Time Factors, Tomography, X-Ray Computed, Length of Stay statistics & numerical data, Stroke physiopathology, Stroke Rehabilitation
- Abstract
The aim of this study was to investigate the relationship between the volume of lesion (VOL) in patients with stroke and the associated length of hospital stay (LOS), as well as longer-term functional outcome. Computerised tomography (CT) scans were used to measure the volume, region and type of lesion, volume being measured by planimetry. LOS and other patient details were obtained from the Dundee Stroke Database. The total LOS was associated with the VOL on univariate analysis (p = 0.004) and after adjustment for the other variables (p = 0.006) due to a larger lesion being associated with longer stay in hospital. Patient follow-up confirmed that the VOL was also highly significant when related to functional outcome measures of impairment, disability and handicap at one year, as determined by Orgogozo (p = 0.03), Barthel (p < 0.01) and Rankin scores (p < 0.01) respectively. The VOL is related to the length of stay in hospital and outcome at one year. This is of particular interest with the increasing use of thrombolysis and development of neuroprotectant agents designed to limit VOL.
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- 2001
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9. Laparoscopic management of gallbladder duplication: a case report and review of literature.
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Maddox JM and Demers ML
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- Female, Humans, Middle Aged, Gallbladder abnormalities, Laparoscopy
- Abstract
Gallbladder duplication is an unusual congenital biliary anomaly, and its laparoscopic management has rarely been described. This is a report of a gallbladder duplication successfully treated with laparoscopic cholecystectomies. Previous cases are summarized, and recommendations for optimal laparoscopic management are presented.
- Published
- 1999
10. Rapid flow cytometric analysis of the cell cycle in intact plant tissues.
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Galbraith DW, Harkins KR, Maddox JM, Ayres NM, Sharma DP, and Firoozabady E
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Mechanical chopping of plant tissues in the presence of mithramycin released intact nuclei representative of the cells within the tissues. The amount of nuclear DNA in the homogenates of monocotyledonous and dicotyledonous plants was accurately and rapidly determined by flow microfluorometry, and the distribution of nuclei involved in the cell cycle was charted for tissues selected from different physical locations or developmental stages.
- Published
- 1983
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