1
|
Lim A, Rothwell PM, Li L, Coutts SB, Hill MD, Guarino M, Barone V, Rondelli F, Kleinig T, Cornell-Farrow R, Krause M, Wronski M, Singhal S, Ma H, Phan TG. Rapid outpatient transient ischemic attack clinic and stroke service activity during the SARS-CoV-2 pandemic: a multicenter time series analysis. Front Neurol 2024; 15:1351769. [PMID: 38385034 PMCID: PMC10879819 DOI: 10.3389/fneur.2024.1351769] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/23/2024] [Indexed: 02/23/2024] Open
Abstract
Background and aim Rapid outpatient evaluation and treatment of TIA in structured clinics have been shown to reduce stroke recurrence. It is unclear whether short-term downtrends in TIA incidence and admissions have had enduring impact on TIA clinic activity. This study aims to measure the impact of the pandemic on hospitals with rapid TIA clinics. Methods Relevant services were identified by literature search and contacted. Three years of monthly data were requested - a baseline pre-COVID period (April 2018 to March 2020) and an intra-COVID period (April 2020 to March 2021). TIA presentations, ischemic stroke presentations, and reperfusion trends inclusive of IV thrombolysis (IVT) and endovascular thrombectomy (EVT) were recorded. Pandemic impact was measured with interrupted time series analysis, a segmented regression approach to test an effect of an intervention on a time-dependent outcome using a defined impact model. Results Six centers provided data for a total of 6,231 TIA and 13,191 ischemic stroke presentations from Australia (52.1%), Canada (35.0%), Italy (7.6%), and England (5.4%). TIA clinic volumes remained constant during the pandemic (2.9, 95% CI -1.8 to 7.6, p = 0.24), as did ischemic stroke (2.9, 95% CI -7.8 to 1.9, p = 0.25), IVT (-14.3, 95% CI -36.7, 6.1, p < 0.01), and EVT (0, 95% CI -16.9 to 16.9, p = 0.98) counts. Proportion of ischemic strokes requiring IVT decreased from 13.2 to 11.4% (p < 0.05), but those requiring EVT did not change (16.0 to 16.7%, p = 0.33). Conclusion This suggests that the pandemic has not had an enduring effect on TIA clinic or stroke service activity for these centers. Furthermore, the disproportionate decrease in IVT suggests that patients may be presenting outside the IVT window during the pandemic - delays in seeking treatment in this group could be the target for public health intervention.
Collapse
Affiliation(s)
- Andy Lim
- School of Clinical Sciences at Monash Health, Monash University, Melbourne, VIC, Australia
| | - Peter M. Rothwell
- Wolfson Center for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neuroscience, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Linxin Li
- Wolfson Center for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neuroscience, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Shelagh B. Coutts
- Departments of Clinical Neurosciences, Radiology and Community Health Sciences, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Michael D. Hill
- Departments of Clinical Neurosciences, Radiology and Community Health Sciences, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Maria Guarino
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Valentina Barone
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy
| | | | - Timothy Kleinig
- Department of Neurology, Royal Adelaide Hospital, Adelaide, SA, Australia
| | | | - Martin Krause
- Department of Neurology, Royal North Shore Hospital and Kolling Institute, University of Sydney, St Leonards, NSW, Australia
| | - Miriam Wronski
- Department of Neurology, Royal North Shore Hospital and Kolling Institute, University of Sydney, St Leonards, NSW, Australia
| | - Shaloo Singhal
- School of Clinical Sciences at Monash Health, Monash University, Melbourne, VIC, Australia
- Department of Neurology, Monash Health, Melbourne, VIC, Australia
| | - Henry Ma
- School of Clinical Sciences at Monash Health, Monash University, Melbourne, VIC, Australia
- Department of Neurology, Monash Health, Melbourne, VIC, Australia
| | - Thanh G. Phan
- School of Clinical Sciences at Monash Health, Monash University, Melbourne, VIC, Australia
- Department of Neurology, Monash Health, Melbourne, VIC, Australia
| |
Collapse
|
2
|
Song J, Corkum MT, Loblaw DA, Chung HT, Tseng CL, Cheung P, Szumacher E, Liu SK, Chu W, Davidson MTM, Wronski M, Zhang L, Mamedov A, Morton G. Dosimetric Parameters Predictive of Treatment-Related Toxicity in High Dose-Rate Brachytherapy as Monotherapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e438-e439. [PMID: 37785424 DOI: 10.1016/j.ijrobp.2023.06.1613] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) High dose-rate (HDR) brachytherapy as monotherapy is an effective treatment for patients with low- and intermediate-risk prostate cancer and is increasingly being offered as a 2-fraction protocol. There is a lack of consensus on the optimal dosimetric planning parameters to use, or whether there is any benefit summating dosimetric parameters from more than one implant. Our goal is to determine planning parameters associated with disease control, toxicity and health-related quality of life (HRQOL). MATERIALS/METHODS Data were collected on 83 patients with low- and intermediate-risk prostate cancer who received 2 fractions of 13.5 Gy HDR brachytherapy without androgen-deprivation therapy as part of a randomized phase II clinical trial. An in-house deformable, registration algorithm was used to co-register and dose-summate the plans from both implants for each patient. Acute and late GU and GI toxicities were measured using CTCAE 4.0 and HRQOL was measured in urinary, bowel, sexual and hormonal domains using the EPIC scores. Treatment efficacy was assessed through PSA measurement and imaging with or without biopsy where indicated. Covariates included baseline clinical factors, disease characteristics and treatment dosimetric parameters. Cox proportional hazards was performed to evaluate covariates impact on treatment toxicity and efficacy, and logistic regression analysis evaluated covariates impact on HRQOL. RESULTS Among the 83 patients, median prostate volume was 46.7cm3. Median summated planning target volume receiving 100% prescription dose (PTV V100%) was 97.4%, median PTV V150% 42.4% and median PTV V200% 15.5%. Median highest dose to the 1cm3 rectum (D1cc) was 66.9% of the prescription dose and median rectum V80% was 0.008cm3. Median urethral D1cc was 99.0% of the prescription dose, median urethral Dmax 121.7% and median urethral D10% 116.2%. Grade ≥2 GI toxicity was uncommon (3.7% acute and 8.5% late), but grade ≥2 GU toxicity was reported in 73.2% (acute) and 46.3% (late) patients. Rectum D1cc and V80% were found to be significantly associated with grade 2 or higher acute GI toxicity, while use of a-blocker at baseline was associated with grade ≥2 acute GU toxicity. Similarly, use of a-blocker was associated with late grade ≥2 GU toxicity, but with no dosimetric associations. No other variables were associated with treatment-related toxicities. Only rectum D1cc was significantly associated with changes in bowel EPIC scores. Estimated 5-year biochemical disease-free survival was 93.9% and 5-year cumulative incidence of local failure was 3.8%. CONCLUSION HDR monotherapy with 27 Gy delivered in 2 fractions in treatment of prostate cancer is well tolerated with high rates of disease control and minimal toxicity. Dose summation between 2 fractions of HDR brachytherapy is feasible, with rectal dose predicting acute GI toxicity. The lack of association between dose metrics and urinary toxicity raises the potential for further dose escalation.
Collapse
Affiliation(s)
- J Song
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - M T Corkum
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - D A Loblaw
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - H T Chung
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - C L Tseng
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - P Cheung
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - E Szumacher
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - S K Liu
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - W Chu
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - M T M Davidson
- Department of Medical Physics, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - M Wronski
- Department of Medical Physics, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - L Zhang
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - A Mamedov
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - G Morton
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| |
Collapse
|
3
|
van de Munckhof A, Lindgren E, Kleinig TJ, Field TS, Cordonnier C, Krzywicka K, Poli S, Sánchez van Kammen M, Borhani-Haghighi A, Lemmens R, Scutelnic A, Ciccone A, Gattringer T, Wittstock M, Dizonno V, Devroye A, Elkady A, Günther A, Cervera A, Mengel A, Chew BLA, Buck B, Zanferrari C, Garcia-Esperon C, Jacobi C, Soriano C, Michalski D, Zamani Z, Blacquiere D, Johansson E, Cuadrado-Godia E, Vuillier F, Bode FJ, Caparros F, Maier F, Tsivgoulis G, Katzberg HD, Duan J, Burrow J, Pelz J, Mbroh J, Oen J, Schouten J, Zimmermann J, Ng K, Garambois K, Petruzzellis M, Carvalho Dias M, Ghiasian M, Romoli M, Miranda M, Wronski M, Skjelland M, Almasi-Dooghaee M, Cuisenier P, Murphy S, Timsit S, Coutts SB, Schönenberger S, Nagel S, Hiltunen S, Chatterton S, Cox T, Bartsch T, Shaygannejad V, Mirzaasgari Z, Middeldorp S, Levi MM, Kremer Hovinga JA, Jood K, Tatlisumak T, Putaala J, Heldner MR, Arnold M, Aguiar de Sousa D, Ferro JM, Coutinho JM. Outcomes of Cerebral Venous Thrombosis due to Vaccine-Induced Immune Thrombotic Thrombocytopenia After the Acute Phase. Stroke 2022; 53:3206-3210. [PMID: 36082668 PMCID: PMC9508952 DOI: 10.1161/strokeaha.122.039575] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cerebral venous thrombosis (CVT) due to vaccine-induced immune thrombotic thrombocytopenia (VITT) is a severe condition, with high in-hospital mortality rates. Here, we report clinical outcomes of patients with CVT-VITT after SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) vaccination who survived initial hospitalization. METHODS We used data from an international registry of patients who developed CVT within 28 days of SARS-CoV-2 vaccination, collected until February 10, 2022. VITT diagnosis was classified based on the Pavord criteria. Outcomes were mortality, functional independence (modified Rankin Scale score 0-2), VITT relapse, new thrombosis, and bleeding events (all after discharge from initial hospitalization). RESULTS Of 107 CVT-VITT cases, 43 (40%) died during initial hospitalization. Of the remaining 64 patients, follow-up data were available for 60 (94%) patients (37 definite VITT, 9 probable VITT, and 14 possible VITT). Median age was 40 years and 45/60 (75%) patients were women. Median follow-up time was 150 days (interquartile range, 94-194). Two patients died during follow-up (3% [95% CI, 1%-11%). Functional independence was achieved by 53/60 (88% [95% CI, 78%-94%]) patients. No new venous or arterial thrombotic events were reported. One patient developed a major bleeding during follow-up (fatal intracerebral bleed). CONCLUSIONS In contrast to the high mortality of CVT-VITT in the acute phase, mortality among patients who survived the initial hospitalization was low, new thrombotic events did not occur, and bleeding events were rare. Approximately 9 out of 10 CVT-VITT patients who survived the acute phase were functionally independent at follow-up.
Collapse
Affiliation(s)
- Anita van de Munckhof
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, the Netherlands. (A.v.d.M., K.K., M.S.v.K., J.M.C.)
| | - Erik Lindgren
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden (E.L., K.J., T.T.).,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg, Sweden (E.L., K.J., T.T.)
| | - Timothy J Kleinig
- Department of Neurology, Royal Adelaide Hospital, Adelaide, Australia (T.J.K.)
| | - Thalia S Field
- Division of Neurology, Vancouver Stroke Program, University of British Columbia, Vancouver, Canada (T.S.F., V.D.)
| | - Charlotte Cordonnier
- University Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience & Cognition, France (C.C., F.C.)
| | - Katarzyna Krzywicka
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, the Netherlands. (A.v.d.M., K.K., M.S.v.K., J.M.C.)
| | - Sven Poli
- Department of Neurology and Stroke, University Hospital Tuebingen, Eberhard-Karls University, Germany. (S.P., A.M., J.M.).,Hertie Institute for Clinical Brain Research, Eberhard-Karls University, Germany. (S.P., J.M.)
| | - Mayte Sánchez van Kammen
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, the Netherlands. (A.v.d.M., K.K., M.S.v.K., J.M.C.)
| | | | - Robin Lemmens
- Department of Neurology, University Hospitals Leuven, Belgium (R.L., A.D.)
| | - Adrian Scutelnic
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland. (A.S., M.R.H., M.A.)
| | - Alfonso Ciccone
- Department of Neurology, Carlo Poma Hospital, Azienda Socio Sanitaria Territoriale di Mantova, Mantua, Italy (A. Ciccone)
| | | | - Matthias Wittstock
- Department of Neurology, University Hospital Rostock, Germany (M. Wittstock)
| | - Vanessa Dizonno
- Division of Neurology, Vancouver Stroke Program, University of British Columbia, Vancouver, Canada (T.S.F., V.D.)
| | - Annemie Devroye
- Department of Neurology, University Hospitals Leuven, Belgium (R.L., A.D.)
| | - Ahmed Elkady
- Department of Neurology, Saudi German Hospital, Jeddah, Saudi Arabia (A.E.)
| | - Albrecht Günther
- Department of Neurology, Jena University Hospital, Germany (A.G.)
| | - Alvaro Cervera
- Royal Darwin Hospital, Darwin, Northern Territory, Australia (A. Cervera)
| | - Annerose Mengel
- Department of Neurology and Stroke, University Hospital Tuebingen, Eberhard-Karls University, Germany. (S.P., A.M., J.M.)
| | - Beng Lim Alvin Chew
- Department of Neurology, John Hunter Hospital, Newcastle, Australia (B.L.A.C., C.G.-E.)
| | - Brian Buck
- Division of Neurology, University of Alberta Hospital, Edmonton, Canada (B.B.)
| | - Carla Zanferrari
- Department of Neurology, Azienda Ospedaliera di Melegnano e della Martesana, Italy (C.Z.)
| | - Carlos Garcia-Esperon
- Department of Neurology, John Hunter Hospital, Newcastle, Australia (B.L.A.C., C.G.-E.)
| | - Christian Jacobi
- Department of Neurology, Krankenhaus Nordwest, Frankfurt am Main, Germany (C.J.)
| | - Cristina Soriano
- Department of Neurology, Hospital General de Castellón, Castelló, Spain (C.S.)
| | - Dominik Michalski
- Department of Neurology, Leipzig University Hospital, Germany (D.M., J. Pelz)
| | - Zohreh Zamani
- Department of Neurology, Firoozabadi Hospital, Firoozgar Hospital, School of Medicine, Iran University of Medical Sciences, Tehran. (Z.Z.)
| | | | - Elias Johansson
- Department Clinical Science, Wallenberg Center for Molecular Medicine (WCMM), Umeå University, Sweden (E.J.)
| | - Elisa Cuadrado-Godia
- Department of Neurology, University Hospital del Mar, Barcelona, Spain (E.C.-G.)
| | | | - Felix J Bode
- Department of Neurology, Universitätsklinikum Bonn, Germany (F.J.B., J.Z.)
| | - François Caparros
- University Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience & Cognition, France (C.C., F.C.)
| | - Frank Maier
- Department of Neurology, Caritas Hospital Saarbrücken, Germany (F.M.)
| | - Georgios Tsivgoulis
- Second Department of Neurology, National and Kapodistrian University of Athens, School of Medicine, Greece (G.T.)
| | - Hans D Katzberg
- Department of Neuromuscular Medicine, Toronto General Hospital, Canada (H.D.K.)
| | - Jiangang Duan
- Department of Neurology and Emergency, Xuanwu Hospital, Capital Medical University, Beijing, China (J.D.)
| | - Jim Burrow
- Department of Neurology, Royal Darwin Hospital, Tiwi, Australia (J.B.)
| | - Johann Pelz
- Department of Neurology, Leipzig University Hospital, Germany (D.M., J. Pelz)
| | - Joshua Mbroh
- Department of Neurology and Stroke, University Hospital Tuebingen, Eberhard-Karls University, Germany. (S.P., A.M., J.M.).,Hertie Institute for Clinical Brain Research, Eberhard-Karls University, Germany. (S.P., J.M.)
| | - Joyce Oen
- Department of Neurology, Antonius Ziekenhuis, Sneek, the Netherlands (J.O.)
| | - Judith Schouten
- Department of Neurology, Rijnstate Hospital Arnhem, the Netherlands (J.S.)
| | - Julian Zimmermann
- Department of Neurology, Universitätsklinikum Bonn, Germany (F.J.B., J.Z.)
| | - Karl Ng
- Department of Neurology, Royal North Shore Hospital, Sydney, Australia (K.N., M. Wronski, S.C.)
| | - Katia Garambois
- Department of Neurology, CHU Grenoble Alpes, France (K.G., P.C.)
| | - Marco Petruzzellis
- Department of Neurology, AOU Consorziale Policlinico di Bari, Italy (M.P.)
| | - Mariana Carvalho Dias
- Department of Neurosciences and Mental Health, Hospital de Santa Maria, Centro Hospitalar Universitario Lisboa Norte, University of Lisbon, Portugal (M.C.D.)
| | - Masoud Ghiasian
- Department of Neurology, Sina Hospital, Hamadan University of Medical Science, Iran (M.G.)
| | - Michele Romoli
- Neurology and Stroke Unit, Department of Neuroscience, Bufalini Hospital, Cesena, Italy (M.R.)
| | - Miguel Miranda
- Department of Neurology, Hospital de Cascais Dr. José de Almeida, Cascais, Portugal (M.M.)
| | - Miriam Wronski
- Department of Neurology, Royal North Shore Hospital, Sydney, Australia (K.N., M. Wronski, S.C.)
| | - Mona Skjelland
- Department of Neurology, Oslo University Hospital, Norway (M.S.)
| | | | | | - Seán Murphy
- Acute Stroke Service, Mater Misericordiae University Hospital, UCD School of Medicine and RCSI Medical School, Dublin, Ireland (S. Murphy)
| | - Serge Timsit
- Department of Neurology, Stroke Unit, Hôpital de la Cavale Blanche, CHRU de Brest (University Hospital), Université de Bretagne Occidentale, Inserm 1078, Brest, France (S.T.)
| | - Shelagh B Coutts
- Department of Clinical Neurosciences, Radiology, and Community Health Sciences, Foothills Medical Centre, Calgary, Canada (S.B.C.)
| | | | - Simon Nagel
- Department of Neurology, Heidelberg University Hospital, Germany (S.S., S.N.)
| | - Sini Hiltunen
- Department of Neurology, Helsinki University Hospital, University of Helsinki, Finland (S.H., T.T., J. Putaala)
| | - Sophie Chatterton
- Department of Neurology, Royal North Shore Hospital, Sydney, Australia (K.N., M. Wronski, S.C.)
| | - Thomas Cox
- Department of Neurology, University Hospital Southampton NHS Foundation Trust, United Kingdom (T.C.)
| | - Thorsten Bartsch
- Department of Neurology, University Medical Center Schleswig-Holstein, Campus Kiel, Germany (T.B.)
| | - Vahid Shaygannejad
- Isfahan University of Medical Sciences (IUMS), Isfahan Neurosciences Research Center (INRC), Iran (V.S.).,Department of Internal (INRC), Iran (V.S.)
| | - Zahra Mirzaasgari
- Department of Neurology, Firoozgar Hospital, School of Medicine, Iran University of Medical Sciences, Tehran. (M.A.-D., Z.M.)
| | - Saskia Middeldorp
- Department of Internal Medicine and Radboud Institute of Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands (S. Middeldorp)
| | - Marcel M Levi
- Department of Vascular Medicine, Amsterdam University Medical Centers, University of Amsterdam, the Netherlands. (M.M.L.).,National Institute for Health Research, University College London Hospitals (UCLH), Biomedical Research Centre, London, United Kingdom (M.M.L.)
| | - Johanna A Kremer Hovinga
- Department of Hematology, Inselspital, Bern University Hospital, University of Bern, Switzerland. (J.A.K.H.)
| | - Katarina Jood
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden (E.L., K.J., T.T.).,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg, Sweden (E.L., K.J., T.T.)
| | - Turgut Tatlisumak
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden (E.L., K.J., T.T.).,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg, Sweden (E.L., K.J., T.T.).,Department of Neurology, Helsinki University Hospital, University of Helsinki, Finland (S.H., T.T., J. Putaala)
| | - Jukka Putaala
- Department of Neurology, Helsinki University Hospital, University of Helsinki, Finland (S.H., T.T., J. Putaala)
| | - Mirjam R Heldner
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland. (A.S., M.R.H., M.A.)
| | - Marcel Arnold
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland. (A.S., M.R.H., M.A.)
| | - Diana Aguiar de Sousa
- Stroke Centre, Lisbon Central University Hospital Centre, Portugal (D.A.d.S.).,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Portugal (D.A.d.S., J.M.F.)
| | - José M Ferro
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Portugal (D.A.d.S., J.M.F.)
| | - Jonathan M Coutinho
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, the Netherlands. (A.v.d.M., K.K., M.S.v.K., J.M.C.)
| |
Collapse
|
4
|
Scutelnic A, Krzywicka K, Mbroh J, van de Munckhof A, van Kammen MS, de Sousa DA, Lindgren E, Jood K, Günther A, Hiltunen S, Putaala J, Tiede A, Maier F, Kern R, Bartsch T, Althaus K, Ciccone A, Wiedmann M, Skjelland M, Medina A, Cuadrado-Godia E, Cox T, Aujayeb A, Raposo N, Garambois K, Payen JF, Vuillier F, Franchineau G, Timsit S, Bougon D, Dubois MC, Tawa A, Tracol C, De Maistre E, Bonneville F, Vayne C, Mengel A, Michalski D, Pelz J, Wittstock M, Bode F, Zimmermann J, Schouten J, Buture A, Murphy S, Palma V, Negro A, Gutschalk A, Nagel S, Schoenenberger S, Frisullo G, Zanferrari C, Grillo F, Giammello F, Martin MM, Cervera A, Burrow J, Esperon CG, Chew BLA, Kleinig TJ, Soriano C, Zimatore DS, Petruzzellis M, Elkady A, Miranda MS, Fernandes J, Vogel ÅH, Johansson E, Philip AP, Coutts SB, Bal S, Buck B, Legault C, Blacquiere D, Katzberg HD, Field TS, Dizonno V, Gattringer T, Jacobi C, Devroye A, Lemmens R, Kristoffersen ES, di Poggio MB, Ghiasian M, Karapanayiotides T, Chatterton S, Wronski M, Ng K, Kahnis R, Geeraerts T, Reiner P, Cordonnier C, Middeldorp S, Levi M, van Gorp ECM, van de Beek D, Brodard J, Kremer Hovinga JA, Kruip MJHA, Tatlisumak T, Ferro JM, Coutinho JM, Arnold M, Poli S, Heldner MR. Management of Cerebral Venous Thrombosis Due to Adenoviral COVID-19 Vaccination. Ann Neurol 2022; 92:562-573. [PMID: 35689346 PMCID: PMC9349982 DOI: 10.1002/ana.26431] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/21/2022] [Accepted: 05/27/2022] [Indexed: 01/01/2023]
Abstract
Objective Cerebral venous thrombosis (CVT) caused by vaccine‐induced immune thrombotic thrombocytopenia (VITT) is a rare adverse effect of adenovirus‐based severe acute respiratory syndrome‐coronavirus 2 (SARS‐CoV‐2) vaccines. In March 2021, after autoimmune pathogenesis of VITT was discovered, treatment recommendations were developed. These comprised immunomodulation, non‐heparin anticoagulants, and avoidance of platelet transfusion. The aim of this study was to evaluate adherence to these recommendations and its association with mortality. Methods We used data from an international prospective registry of patients with CVT after the adenovirus‐based SARS‐CoV‐2 vaccination. We analyzed possible, probable, or definite VITT‐CVT cases included until January 18, 2022. Immunomodulation entailed administration of intravenous immunoglobulins and/or plasmapheresis. Results Ninety‐nine patients with VITT‐CVT from 71 hospitals in 17 countries were analyzed. Five of 38 (13%), 11 of 24 (46%), and 28 of 37 (76%) of the patients diagnosed in March, April, and from May onward, respectively, were treated in‐line with VITT recommendations (p < 0.001). Overall, treatment according to recommendations had no statistically significant influence on mortality (14/44 [32%] vs 29/55 [52%], adjusted odds ratio [OR] = 0.43, 95% confidence interval [CI] = 0.16–1.19). However, patients who received immunomodulation had lower mortality (19/65 [29%] vs 24/34 [70%], adjusted OR = 0.19, 95% CI = 0.06–0.58). Treatment with non‐heparin anticoagulants instead of heparins was not associated with lower mortality (17/51 [33%] vs 13/35 [37%], adjusted OR = 0.70, 95% CI = 0.24–2.04). Mortality was also not significantly influenced by platelet transfusion (17/27 [63%] vs 26/72 [36%], adjusted OR = 2.19, 95% CI = 0.74–6.54). Conclusions In patients with VITT‐CVT, adherence to VITT treatment recommendations improved over time. Immunomodulation seems crucial for reducing mortality of VITT‐CVT. ANN NEUROL 2022;92:562–573
Collapse
Affiliation(s)
- Adrian Scutelnic
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Katarzyna Krzywicka
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Joshua Mbroh
- Hertie Institute for Clinical Brain Research, Eberhard-Karls University, Tuebingen, Germany.,Department of Neurology & Stroke, Eberhard-Karls University, Tuebingen, Germany
| | - Anita van de Munckhof
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Mayte Sánchez van Kammen
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Diana Aguiar de Sousa
- CEEM and Institute of Anatomy, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Erik Lindgren
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | - Katarina Jood
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Gothenburg, Sweden
| | - Albrecht Günther
- Department of Neurology, Jena University Hospital, Jena, Germany
| | - Sini Hiltunen
- Department of Neurology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Jukka Putaala
- Department of Neurology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Andreas Tiede
- Clinic for Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Frank Maier
- Department of Neurology, Caritas Hospital Saarbrücken, Saarbrücken, Germany
| | - Rolf Kern
- Department of Neurology, Kempten Hospital, Kempten, Germany
| | - Thorsten Bartsch
- Department of Neurology, University Medical Center Schleswig-Holstein, Kiel, Germany
| | | | - Alfonso Ciccone
- Department of Neurology, Carlo Poma Hospital, Azienda Socio Sanitaria Territoriale di Mantova, Mantua, Italy
| | - Markus Wiedmann
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Mona Skjelland
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Antonio Medina
- Department of Neurology, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
| | | | - Thomas Cox
- Department of Neurology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Avinash Aujayeb
- Respiratory Department, Northumbria Healthcare NHS Foundation Trust, Cramlington, UK
| | - Nicolas Raposo
- Department of Neurology, Toulouse University Hospital, Toulouse, France
| | - Katia Garambois
- Stroke Unit, University Hospital of Grenoble, Grenoble, France
| | | | | | - Guillaume Franchineau
- Department of Intensive Care, Centre Hospitalier Intercommunal de Poissy Saint Germain en Laye, Poissy, France
| | - Serge Timsit
- Neurology and Stroke Unit, Centre Hospitalier Universitaire de Brest, CHU Brest, Brest, France
| | - David Bougon
- Department of Critical Care, Annecy Genevois Hospital, Annecy, France
| | - Marie-Cécile Dubois
- Department of Anesthesia and Intensive Care, University Hospital of Poitiers, Poitiers, France
| | - Audrey Tawa
- Department of Anesthesia and Intensive Care, University Hospital of Rennes, Rennes, France
| | | | | | - Fabrice Bonneville
- Department of Neuroradiology, Toulouse University Hospital, Toulouse, France
| | - Caroline Vayne
- Department of Hematology and Hemostasis, Tours University Hospital, Tours, France
| | - Annerose Mengel
- Department of Neurology and Stroke, Eberhard-Karls University, Tuebingen, Germany
| | - Dominik Michalski
- Department of Neurology, Leipzig University Hospital, Leipzig, Germany
| | - Johann Pelz
- Department of Neurology, Leipzig University Hospital, Leipzig, Germany
| | | | - Felix Bode
- Department of Neurology, Universitätsklinikum Bonn, Bonn, Germany
| | | | - Judith Schouten
- Department of Neurology, Rijnstate Hospital Arnhem, Arnhem, The Netherlands
| | - Alina Buture
- Acute Stroke Service, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Sean Murphy
- Acute Stroke Service, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Vincenzo Palma
- Department of Neuroradiology, Ospedale del Mare, Naples, Italy
| | - Alberto Negro
- Department of Neuroradiology, Ospedale del Mare, Naples, Italy
| | - Alexander Gutschalk
- Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany
| | - Simon Nagel
- Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Giovanni Frisullo
- Department of Neurology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Carla Zanferrari
- Department of Neurology, Azienda Ospedaliera di Melegnano e della Martesana, Melegnano, Italy
| | - Francesco Grillo
- Stroke Unit, Department of Clinical and Experimental Medicine, University Hospital G. Martino, Messina, Italy
| | - Fabrizio Giammello
- Translational Molecular Medicine and Surgery, XXXV Cycle, Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Mar Morin Martin
- Department of Neurology, Hospital Complex of Toledo, Toledo, Spain
| | - Alvaro Cervera
- Department of Neurology, Royal Darwin Hospital, Tiwi, Northern Territory, Australia
| | - Jim Burrow
- Department of Neurology, Royal Darwin Hospital, Tiwi, Northern Territory, Australia
| | - Carlos Garcia Esperon
- Department of Neurology, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Beng Lim Alvin Chew
- Department of Neurology, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Timothy J Kleinig
- Department of Neurology, Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - Cristina Soriano
- Department of Neurology, Hospital General de Castellón, Castelló, Spain
| | | | - Marco Petruzzellis
- Department of Neurology, AOU Consorziale Policlinico di Bari, Bari, Italy
| | - Ahmed Elkady
- Department of Neurology, Saudi German Hospital, Jeddah, Saudi Arabia
| | - Miguel S Miranda
- Department of Neurology, Hospital de Cascais Dr José de Almeida, Cascais, Portugal
| | - João Fernandes
- Department of Neurology, Norra Älvsborgs Länssjukhus, Trollhattan, Sweden
| | | | - Elias Johansson
- Clinical Science, Neurosciences, Umeå University, Umeå, Sweden.,Wallenberg Centre for Molecular Medicine, Umeå, Sweden
| | | | - Shelagh B Coutts
- Department of Clinical Neurosciences, Radiology, and Community Health Sciences, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Simerpreet Bal
- Department of Clinical Neurosciences, Radiology, and Community Health Sciences, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Brian Buck
- Division of Neurology, University of Alberta Hospital, Edmonton, Alberta, Canada
| | - Catherine Legault
- Department of Neurology and Neurosurgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Dylan Blacquiere
- Division of Neurology, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Hans D Katzberg
- Department of Neuromuscular Medicine, Toronto General Hospital, Toronto, Ontario, Canada
| | - Thalia S Field
- Division of Neurology, University of British Columbia, Vancouver Stroke Program, Vancouver, British Columbia, Canada
| | - Vanessa Dizonno
- Division of Neurology, University of British Columbia, Vancouver Stroke Program, Vancouver, British Columbia, Canada
| | | | - Christian Jacobi
- Department of Neurology, Nordwest Hospital, Frankfurt am Main, Germany
| | - Annemie Devroye
- Department of Neurology, University Hospitals Leuven, Leuven, Belgium
| | - Robin Lemmens
- Department of Neurology, University Hospitals Leuven, Leuven, Belgium
| | | | | | - Masoud Ghiasian
- Department of Neurology, Sina Hospital, Hamadan University of Medical Science, Hamadan, Iran
| | | | - Sophie Chatterton
- Department of Neurology, St. Vincent's Hospital, Sydney, New South Wales, Australia
| | - Miriam Wronski
- Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Karl Ng
- Department of Neurology and Clinical Neurophysiology, Royal North Shore Hospital and The University of Sydney, Sydney, New South Wales, Australia
| | - Robert Kahnis
- Department of Neurology, Vivantes Auguste-Viktoria-Klinikum, Berlin, Germany
| | - Thomas Geeraerts
- Department of Anaesthesiology and Critical Care, University Toulouse 3-Paul-Sabatier, University Hospital of Toulouse, Hôpital Pierre-Paul Riquet, CHU Toulouse-Purpan, Toulouse, France
| | - Peggy Reiner
- Service de neurologie, hôpital Lariboisière Université Paris-7, AP-HP, Paris Cedex 10, France
| | - Charlotte Cordonnier
- University of Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience & Cognition, Lille, France
| | - Saskia Middeldorp
- Department of Internal Medicine & Radboud Institute of Health Sciences (RIHS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marcel Levi
- National Institute for Health Research University College London Hospitals (UCLH) Biomedical Research Centre, London, UK.,Department of Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Eric C M van Gorp
- Department of Viroscience, Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Diederik van de Beek
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Justine Brodard
- Department of Hematology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Johanna A Kremer Hovinga
- Department of Hematology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Marieke J H A Kruip
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Turgut Tatlisumak
- Department of Neurology & Stroke, Eberhard-Karls University, Tuebingen, Germany
| | - José M Ferro
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Jonathan M Coutinho
- Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Marcel Arnold
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Sven Poli
- Hertie Institute for Clinical Brain Research, Eberhard-Karls University, Tuebingen, Germany.,Department of Neurology & Stroke, Eberhard-Karls University, Tuebingen, Germany
| | - Mirjam R Heldner
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| |
Collapse
|
5
|
Corkum M, Morton G, Loblaw D, Tseng C, Murgic J, Ravi A, Davidson M, Wronski M, Haider M, Chung H. A Prospective Study of MR-Guided Focal Salvage High Dose-Rate Brachytherapy for Radiorecurrent Prostate Cancer: Updated Results of 30 Patients. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.876] [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: 11/15/2022]
|
6
|
Corkum M, Loblaw D, Chung H, Tseng C, McGuffin M, Davidson M, Paudel M, Wronski M, Cheung P, Chu W, Szumacher E, Zhang L, Mamedov A, Morton G. Dosimetric Predictors of Toxicity and Quality of Life Following Single Fraction High Dose-Rate Prostate Brachytherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.877] [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]
|
7
|
Chung H, Loblaw A, Tseng C, Murgic J, D'Alimonte L, Ravi A, Davidson M, Wronski M, Haider M, Morton G. PP-0162 MR-assisted whole salvage HDR prostate brachytherapy with intra-prostatic boost: a prospective study. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06454-9] [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: 10/21/2022]
|
8
|
Bosnic S, McKenzie E, Razvi Y, Wronski M, Zhang L, Vesprini D, Paszat L, Drost L, Yee C, Russell S, McCann C, Chow E. Heart and Lung Dose Metrics in Radiation Therapy Patients Treated for Synchronous Bilateral Breast Cancer (SBBC): A Decade in Review (2011-2018). Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
9
|
Martell K, Mendez LC, Chung HT, Tseng CL, Alayed Y, Cheung P, Liu S, Vesprini D, Chu W, Wronski M, Szumacher E, Ravi A, Loblaw A, Morton G. Results of 15 Gy HDR-BT boost plus EBRT in intermediate-risk prostate cancer: Analysis of over 500 patients. Radiother Oncol 2019; 141:149-155. [PMID: 31522882 DOI: 10.1016/j.radonc.2019.08.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [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: 04/11/2019] [Revised: 08/16/2019] [Accepted: 08/20/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE/OBJECTIVE To report biochemical control associated with single fraction 15 Gy high-dose-rate brachytherapy (HDR-BT) boost followed by external beam radiation (EBRT) in patients with intermediate-risk prostate cancer. MATERIALS AND METHODS A retrospective chart review of all patients with intermediate-risk disease treated with a real-time ultrasound-based 15 Gy HDR-BT boost followed by EBRT between 2009 and 2016 at a single quaternary cancer center was performed. Freedom from biochemical failure (FFBF), cumulative incidence of androgen deprivation therapy use for biochemical or clinical failure post-treatment (CI of ADT) and metastasis-free survival (MFS) outcomes were measured. RESULTS 518 patients met the inclusion criteria for this study. Median age at HDR-BT was 67 years (IQR 61-72). 506 (98%) had complete pathologic information available. Of these, 146 (28%) had favorable (FIR) and 360 (69%) had unfavorable (UIR) intermediate-risk disease. 83 (16%) received short course hormones with EBRT + HDR. Median overall follow-up was 5.2 years. FFBF was 91 (88-94)% at 5 years. Five-year FFBF was 94 (89-99)% and 89 (85-94)% in FIR and UIR patients, respectively (p = 0.045). CI of ADT was 4 (2-6)% at 5 years. Five-year CI of ADT was 1 (0-3)% and 5 (2-8)% in FIR and UIR patients, respectively (p = 0.085). MFS was 97 (95-98)% at 5 years. Five-year MFS was 100 (N/A-100)% and 95 (92-98)% in FIR and UIR patients, respectively (p = 0.020). CONCLUSION In this large cohort of intermediate-risk prostate cancer patients, 15 Gy HDR-BT boost plus EBRT results in durable biochemical control and low rates of ADT use for biochemical failure.
Collapse
Affiliation(s)
- K Martell
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - L C Mendez
- University of Toronto, Department of Radiation Oncology, Canada; Western University, Department of Radiation Oncology, London, Canada; London Health Sciences Centre, Canada
| | - H T Chung
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - C L Tseng
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Y Alayed
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada; Division of Radiation Oncology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - P Cheung
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - S Liu
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - D Vesprini
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - W Chu
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - M Wronski
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - E Szumacher
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - A Ravi
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - A Loblaw
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada
| | - G Morton
- University of Toronto, Department of Radiation Oncology, Canada; Sunnybrook Health Sciences Centre, Toronto, Canada.
| |
Collapse
|
10
|
Lao N, Mendez L, Rodrigues M, Zhang L, Wronski M, McKenzie E, Chow R, Pidduck W, Yee C, Bosnic S, Leung E, McCann C, Chow E, Lock M. Validation and Inter-Rater Reliability of Two Metrics Used As Predictors of Heart Dose in Patients Treated with Adjuvant Radiotherapy to the Left Breast. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.964] [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: 11/25/2022]
|
11
|
Mccann C, Chow E, Vesprini D, Eric L, Paruag C, Lai E, Wronski M. EP-1324 A Dosimetric Study of Heart and Lung Dose in Breast Radiotherapy-Our Institutional Experience. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31744-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: 10/26/2022]
|
12
|
Mendez L, Ravi A, Tseng C, Chung H, Paudel M, Wronski M, Davidson M, Loblaw A, Morton G. PO-1028: Acute urinary retention and hematuria in prostate cancer patients treated with HDR-BT. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31338-0] [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: 10/14/2022]
|
13
|
Leung E, D'Souza D, Alfieri J, Banerjee R, Bachand F, Barbera L, Barkati M, Barnes E, Bowes D, Fortin I, Foster W, Han K, Huang F, Patil N, Velker V, Vigneault E, Wiebe E, Wronski M, Ravi A. Contouring and Target Variability in Vaginal Tumors Treated with MR-Based Interstitial Brachytherapy: A Multi-institutional Contouring Study. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.263] [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: 11/25/2022]
|
14
|
Wronski M, Ahmad S, Sarfehnia A, Sahgal A, Keller B. SU-F-T-374: Dosimetric Effects of Irradiation Through a Bilateral Hip Prosthesis in a MRI Linac. Med Phys 2016. [DOI: 10.1118/1.4956559] [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: 11/07/2022] Open
|
15
|
Ahmad S, Sarfehnia A, Kim A, Wronski M, Sahgal A, Keller B. TH-AB-BRA-10: The Physics of Interface Effects for Radiation Treatments in a MRI-Linac: A Monte Carlo Study. Med Phys 2016. [DOI: 10.1118/1.4958061] [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: 11/07/2022] Open
|
16
|
Fatemi-Ardekani A, Wronski M, Kim A, Stanisz G, Sarfehnia A, Keller B. SU-E-J-209: Geometric Distortion at 3T in a Commercial 4D MRI-Compatible Phantom. Med Phys 2015. [DOI: 10.1118/1.4924295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
17
|
Pelka-Wysiecka J, Wronski M, Samochowiec J. Odors Identification Differences in Deficit and Nondeficit Schizophrenia. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)31285-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
18
|
Sanier M, Wronski M, Yeboah C. Poster - Thur Eve - 26: Evaluation of lens dose from anterior electron beams: comparison of Pinnacle and Gafchromic EBT3 film. Med Phys 2014. [DOI: 10.1118/1.4894883] [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: 11/07/2022] Open
|
19
|
Leavens C, Wronski M, Lee YK, Soliman H, Sahgal A, Ruschin M. Poster - Thur Eve - 64: Preliminary investigation of arc configurations for optimal sparing of normal tissue in hypofractionated stereotactic radiotherapy (HF-SRT) of multiple brain metastases using a 5mm interdigitating micro-multileaf collimator. Med Phys 2014. [DOI: 10.1118/1.4894924] [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: 11/07/2022] Open
|
20
|
Wronski M, Zhao W, Tanioka K, Decrescenzo G, Rowlands JA. Scintillator high-gain avalanche rushing photoconductor active-matrix flat panel imager: zero-spatial frequency x-ray imaging properties of the solid-state SHARP sensor structure. Med Phys 2013; 39:7102-9. [PMID: 23127101 DOI: 10.1118/1.4760989] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
PURPOSE The authors are investigating the feasibility of a new type of solid-state x-ray imaging sensor with programmable avalanche gain: scintillator high-gain avalanche rushing photoconductor active matrix flat panel imager (SHARP-AMFPI). The purpose of the present work is to investigate the inherent x-ray detection properties of SHARP and demonstrate its wide dynamic range through programmable gain. METHODS A distributed resistive layer (DRL) was developed to maintain stable avalanche gain operation in a solid-state HARP. The signal and noise properties of the HARP-DRL for optical photon detection were investigated as a function of avalanche gain both theoretically and experimentally, and the results were compared with HARP tube (with electron beam readout) used in previous investigations of zero spatial frequency performance of SHARP. For this new investigation, a solid-state SHARP x-ray image sensor was formed by direct optical coupling of the HARP-DRL with a structured cesium iodide (CsI) scintillator. The x-ray sensitivity of this sensor was measured as a function of avalanche gain and the results were compared with the sensitivity of HARP-DRL measured optically. The dynamic range of HARP-DRL with variable avalanche gain was investigated for the entire exposure range encountered in radiography∕fluoroscopy (R∕F) applications. RESULTS The signal from HARP-DRL as a function of electric field showed stable avalanche gain, and the noise associated with the avalanche process agrees well with theory and previous measurements from a HARP tube. This result indicates that when coupled with CsI for x-ray detection, the additional noise associated with avalanche gain in HARP-DRL is negligible. The x-ray sensitivity measurements using the SHARP sensor produced identical avalanche gain dependence on electric field as the optical measurements with HARP-DRL. Adjusting the avalanche multiplication gain in HARP-DRL enabled a very wide dynamic range which encompassed all clinically relevant medical x-ray exposures. CONCLUSIONS This work demonstrates that the HARP-DRL sensor enables the practical implementation of a SHARP solid-state x-ray sensor capable of quantum noise limited operation throughout the entire range of clinically relevant x-ray exposures. This is an important step toward the realization of a SHARP-AMFPI x-ray flat-panel imager.
Collapse
Affiliation(s)
- M Wronski
- Department of Radiation Oncology, Sunnybrook Health Sciences Center, Toronto, Ontario, Canada
| | | | | | | | | |
Collapse
|
21
|
Wronski M, Slodkowski M, Krasnodebski I. Education and imaging. Gastrointestinal: Cavitating mesenteric lymph node syndrome as manifestation of anaplastic large cell lymphoma. J Gastroenterol Hepatol 2012; 27:412. [PMID: 22260283 DOI: 10.1111/j.1440-1746.2011.06991.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- M Wronski
- Department of General, Gastroenterological and Oncological Surgery, Medical University of Warsaw, Warsaw, Poland
| | | | | |
Collapse
|
22
|
|
23
|
Zhao W, Hsiao H, Wronski M, Rowlands J. MO-D-201B-04: Emerging X-Ray Detector Technologies. Med Phys 2010. [DOI: 10.1118/1.3469077] [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: 11/07/2022] Open
|
24
|
Wronski M, Reznik A, Rowlands J, Zhao W. Sci-Fri AM(1): Imaging-01: Characterization of an Avalanche Detector for Low-Dose X-Ray Imaging. Med Phys 2009. [DOI: 10.1118/1.3244184] [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: 11/07/2022] Open
|
25
|
Wronski M, Zhao W, Reznik A, Tanioka K, DeCrescenzo G, Rowlands J. SU-GG-BRC-06: An Enabling Technology for Very Low Exposure X-Ray Imaging. Med Phys 2009. [DOI: 10.1118/1.3182182] [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: 11/07/2022] Open
|
26
|
Abstract
About 15% of metastatic breast carcinoma patients are diagnosed with brain metastases. Historically, the majority are treated with palliative external whole-brain radiation with a median survival of 4 months. We examined stereotactic radiosurgery's effect on treatment outcome in such patients. Four hundred and fifty four consecutive patients with brain metastases were treated with stereotactic radiosurgery at Staten Island University Hospital, NY, between 1991 and 1999. The medical records of 60 women with histologically confirmed breast cancer were retrospectively reviewed. Forty-three patients (71%) received fractionated radiosurgery (4 x 600 cGy) and form the core of this report. Sixty five percentage had been previously unsuccessfully treated by whole-brain radiation or had recurrence after craniotomy. Survival was calculated by the Kaplan-Meier method. The median age at diagnosis of brain metastases was 52 years, with median interval of 49 months following the diagnosis of tumor primary. Median survival from brain diagnosis reached 13.6 months. Overall median survival from radiosurgery treatment was 7.5 months. Fifteen patients with one or two brain lesions survived a median of 11.5 months. For the fractionated cohort of patients 1- and 2-year actuarial survival was 28.2% and 12.8%, respectively. Three patients are alive at 32, 34 and 64 months, respectively. We conclude that fractionated radiosurgery improves survival of patients with brain metastases from breast cancer, especially those with small lesions, good functional status and no other metastatic disease. These patients should be encouraged to consider radiosurgery, possibly before WBRT. Considering our 7.5 months overall survival including patients with multiple metastases, and patients with progressive brain metastases despite extensive standard therapy and often systemic disease, these results suggest that radiosurgery could benefit breast cancer patients with brain metastases and extend life.
Collapse
Affiliation(s)
- G Lederman
- Department Radiation Oncology, Staten Island University Hospital, New York, NY 10305, USA
| | | | | |
Collapse
|
27
|
Lederman G, Wronski M, Arbit E, Odaimi M, Wertheim S, Lombardi E, Wrzolek M. Treatment of recurrent glioblastoma multiforme using fractionated stereotactic radiosurgery and concurrent paclitaxel. Am J Clin Oncol 2000; 23:155-9. [PMID: 10776976 DOI: 10.1097/00000421-200004000-00010] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.6] [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: 11/25/2022]
Abstract
Despite the progress in neurosurgery and radiotherapy, almost all patients treated with malignant gliomas develop recurrent tumors and die of their disease. Eighty-eight patients (median age 56 years) with recurrent glioblastoma (median tumor volume 32.7 cm3) were treated with noninvasive fractionated stereotactic radiosurgery and concurrent paclitaxel used as a sensitizer. The median interval between diagnosis of primary glioblastoma and salvage radiosurgery was 7.8 months. Four weekly treatments (median dose: 6.0 Gy) were delivered after the 3-hour paclitaxel infusion (median dose: 120 mg/m2). Survival was calculated by the Kaplan-Meier method from radiosurgery treatment. Overall median survival was 7.0 months, and the 1-year and 2-year actuarial survival rates were 17% and 3.4%, respectively. When grouped by performance status, there was no difference in survival between the patients with low and high Karnofsky score. Patients with tumor volume less than 30 cm3 survived significantly longer than those with tumor greater than 30 cm3 (9.4 vs. 5.7 months, p = 0.0001). Their 1-year survival rate was 40% and 8%, respectively. Eleven patients (11%) had reoperation because of expanding mass. Stable disease was seen in 40% of patients (n = 34), and increase in radiographically detected mass was observed in 41 patients (48.8%). Although the treatment of recurrent GBM is mostly palliative, the fractionated radiosurgery offers a chance for prolonged survival, especially in patients with a smaller tumor volume.
Collapse
Affiliation(s)
- G Lederman
- Department of Radiation Oncology, Staten Island University Hospital, New York 10305, USA
| | | | | | | | | | | | | |
Collapse
|
28
|
Lederman G, Lowry J, Wertheim S, Fine M, Lombardi E, Wronski M, Arbit E. Acoustic neuroma: potential benefits of fractionated stereotactic radiosurgery. Stereotact Funct Neurosurg 1998; 69:175-82. [PMID: 9711752 DOI: 10.1159/000099871] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [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: 11/19/2022]
Abstract
BACKGROUND Single-fraction radiosurgery of acoustic neuromas less than 3 cm in diameter is remarkable for high control but not infrequent incidence of facial and trigeminal neuropathy. Larger tumors treated surgically often result in deafness and facial neuropathy. Fractionated stereotactic radiosurgery was used in an effort to maintain effective therapy while minimizing toxicity of treatment. METHODS The authors described 38 patients with acoustic neuromas, with age range 35-89 years (mean, 60 years). 2,000 cGy in divided weekly doses of 400 or 500 cGy was most commonly prescribed. Tumors > or = 3 cm (n = 16) received the 5 fraction schema. Mean tumor volume was 6.9 cm3, with range from 0.1 to 32.0 cm3. RESULTS Median clinical follow-up was 27.1 months, while neuroimaging follow-up had a median of 16.3 months. All tumors were controlled. Of 23 tumors smaller than 3 cm, 14 (61%) decreased in size, and 9 showed cessation of growth. Thirteen of 16 (81%) large acoustic neuromas (3-5 cm) diminished in size. The remaining 3 showed cessation of growth. Median radiographic follow-up was 20 months, with a median clinical follow-up of 28 months. No patient developed fifth nerve symptoms after treatment nor did any patient require surgery for treatment failure. Only one had temporary seventh nerve palsy. CONCLUSION Fractionated stereotactic radiosurgery offers a therapeutic approach producing high control rates while avoiding morbidity frequently seen after single-fraction radiosurgery or microsurgery.
Collapse
Affiliation(s)
- G Lederman
- Department of Radiation Oncology, Staten Island University Hospital, N.Y., USA
| | | | | | | | | | | | | |
Collapse
|
29
|
Wronski M, Maor M, Davis B, Sawaya R, Levin V. External Radiation of Brain Metastases From Renal Carcinoma: A Retrospective Study of 119 Patients From the M. D. Anderson Cancer Center. J Urol 1998. [DOI: 10.1016/s0022-5347(01)63907-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- M. Wronski
- Department of Neuro-Oncology Research, Staten Island University Hospital, Staten Island, New York, Departments of Radiotherapy, Neurosurgery and Neuro-Oncology, M. D. Anderson Cancer Center, Houston, Texas, and Division of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - M.H. Maor
- Department of Neuro-Oncology Research, Staten Island University Hospital, Staten Island, New York, Departments of Radiotherapy, Neurosurgery and Neuro-Oncology, M. D. Anderson Cancer Center, Houston, Texas, and Division of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - B.J. Davis
- Department of Neuro-Oncology Research, Staten Island University Hospital, Staten Island, New York, Departments of Radiotherapy, Neurosurgery and Neuro-Oncology, M. D. Anderson Cancer Center, Houston, Texas, and Division of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - R. Sawaya
- Department of Neuro-Oncology Research, Staten Island University Hospital, Staten Island, New York, Departments of Radiotherapy, Neurosurgery and Neuro-Oncology, M. D. Anderson Cancer Center, Houston, Texas, and Division of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - V.A. Levin
- Department of Neuro-Oncology Research, Staten Island University Hospital, Staten Island, New York, Departments of Radiotherapy, Neurosurgery and Neuro-Oncology, M. D. Anderson Cancer Center, Houston, Texas, and Division of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
30
|
Lederman G, Arbit E, Odaimi M, Lombardi E, Wrzolek M, Wronski M. Fractionated stereotactic radiosurgery and concurrent taxol in recurrent glioblastoma multiforme: a preliminary report. Int J Radiat Oncol Biol Phys 1998; 40:661-6. [PMID: 9486617 DOI: 10.1016/s0360-3016(97)00843-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [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: 02/06/2023]
Abstract
PURPOSE Surgery and systemic chemotherapy offer modest benefit to patients with recurrent glioblastoma multiforme. These tumors are associated with rapid growth and progressive neurological deterioration. Radiosurgery offers a rational alternative treatment, delivering intensive local therapy. A pilot protocol to treat recurrent glioblastoma was developed using fractionated stereotactic radiosurgery with concurrent intravenous (i.v.) Taxol as a radiation sensitizer. METHODS AND MATERIALS The treatment outcome was analyzed in 14 patients with recurrent glioblastoma treated with fractionated stereotactic radiosurgery and concurrent Taxol. Median tumor volume was 15.7 cc and patients received a mean radiation dose of 6.2 Gy at 90% isodose line, 4 times weekly. The median dose of Taxol was 120 mg/m2. RESULTS The median survival was 14.2 months, 1-year survival was 50%. CONCLUSIONS Survival for this small group of patients was similar to or better than historical controls or patients treated with single-fraction radiosurgery alone. This data should stimulate the investigation of both fractionated radiosurgery and the development of radiation sensitizers to further enhance treatment.
Collapse
Affiliation(s)
- G Lederman
- Department of Radiation Oncology, Staten Island University Hospital, NY 10305, USA.
| | | | | | | | | | | |
Collapse
|
31
|
Arbit E, Wronski M. Clinical decision making in brain metastases. Neurosurg Clin N Am 1996; 7:447-57. [PMID: 8823774] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Surgery for metastatic cancer of the brain parenchyma has been shown to increase length of survival, especially in patients with primary breast cancer, RCC, and lung cancer. The identification of prognostic variables common to patients with brain metastases has permitted development of therapeutic guidelines.
Collapse
Affiliation(s)
- E Arbit
- Department of Neuro-Oncological Surgery, Staten Island University Hospital, New York, New York, USA
| | | |
Collapse
|
32
|
Abstract
We used the biphasic electroencephalographic (EEG) response to increasing concentrations of thiopental to measure regional brain responses to thiopental. Eight patients with cortical parietal brain tumors, 3.3 (SD 1.3) cm in diameter, and eight control patients with lung cancer and normal brain computed tomography scans received thiopental by infusion (50-75 mg/min) until burst suppression (50% isoelectric activity) on the EEG occurred. Infusion lasted 10.7 (SD 2.4) min, and the average dose of thiopental administered was 810 (SD 170) mg [11.2 (SD 1.9) mg/kg]. During infusion the EEG was continuously recorded from the F3, F4, P3, and P4 electrodes. On-line power spectral analysis was performed, and data were saved for later analysis. Four EEG parameters [log beta (15-30 Hz) power, percent beta power, spectral edge 95% and spectral edge 70%] were plotted against calculated brain concentration of thiopental [using an assumed plasma-effect site rate constant (ke0) of 0.58] for each individual. Three points were measured on each curve (50% upslope, peak, and zero intercept) to quantitate the EEG response. Statistical comparisons were performed between the following sets of data: EEG response at electrode closest to brain tumor versus electrode farthest from tumor (in the same patient); and electrodes closest to brain tumors (parietal P3 and P4) versus same electrode pair in control patients (patients with thoracic tumors) using analysis. No differences were found in any comparison. Thus, the presence of a brain tumor does not affect the response of the brain in this region to thiopental as measured using EEG.
Collapse
Affiliation(s)
- R A Veselis
- Department of Anesthesiology and Critical Care Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA
| | | | | | | | | | | | | |
Collapse
|
33
|
Abstract
We have studied the effects of conscious sedation with propofol on long latency components of the auditory event-related potential (ERP) in 10 normal volunteers (aged 21-41 yr) receiving propofol 75 micrograms kg-1 min-1 i.v. We examined the effects of propofol on ERP amplitudes and latencies, and their relationship to delayed recognition performance using a verbal memory test, a selective attention task (button pushing) and serum concentrations of propofol. During infusion of propofol, subjects were mildly sedated, oriented and readily responsive to verbal commands. ERP were recorded from monopolar FZ, CZ and PZ electrodes. We used a standard paradigm requiring selective attention to randomly occurring stimuli associated with a task (button push). The peak-to-peak amplitudes and latencies of the N2 and P3 waves were obtained before and during infusion, and 15, 100 and 170 min after infusion. Propofol produced a 70% decrease in the amplitude of P3 (P < 0.0001) from baseline and a 50% increase in reaction time. The differential response to target compared with non-target stimuli was maintained during infusion for both N2 and P3. Memory performance correlated more strongly with changes in P3 amplitude (r = 0.59) than with serum propofol concentrations (r = -0.07), although this correlation with memory did not reach statistical significance (P = 0.08). We conclude that P3 amplitude was profoundly affected by propofol given in sedative concentrations.
Collapse
Affiliation(s)
- R A Reinsel
- Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | | | | | | |
Collapse
|
34
|
Abstract
PURPOSE Although resection of single brain metastases and postoperative whole-brain radiation therapy (WBRT) improves survival, compared with treatment using WBRT alone, the value of postoperative WBRT after resection of brain metastases is controversial. We analyzed the largest reported series of lung cancer patients with resected brain metastases to evaluate the impact of postoperative WBRT. MATERIALS AND METHODS Between 1974 and 1989, 185 patients with non-small-cell lung cancer (NSCLC) underwent resection of brain metastases. Patients who had received preoperative WBRT (23%, 42 of 185) were excluded. The remaining patients were divided into group A (no WBRT; n = 32), group B (patients received WBRT and were prognostically matched to group A; n = 32), and group C (all other WBRT patients; n = 79). Most patients received postoperative doses of 30 Gy in 10 fractions. Higher doses were used in 16% of group B and 18% of group C patients. RESULTS Overall 5-year survival rates were as follows: group A, 12%; B, 8%; C, 16%. Overall brain failures occurred in 38% of patients in group A, 47% in group B, and 42% in group C. The use of WBRT (group A v groups B plus C) had no apparent impact on survival or on overall brain failure rates. In particular, no improvement in either of these parameters could be demonstrated when group B was compared with group A. Focal failure (defined as failure within the brain adjacent to the site of the resected brain metastases) occurred as follows: group A, 34% (11 of 32); groups B plus C, 23% (25 of 111) (P = .07). WBRT significantly reduced focal failure for patients with adenocarcinoma (group A, 33% [eight of 24]; groups B plus C, 14% [11 of 79]; P = .05). Nonfocal failure (anatomically distinct from the resected metastasis) occurred in 9% of patients in group A (three of 32), 21% in groups B plus C (23 of 111) (P = .07). CONCLUSION Long-term survival is possible when NSCLC brain metastases are resected. Postoperative WBRT as used in this series only had an impact on the focal control of brain metastases and this effect was of borderline significance. The lack of conclusive benefit supports the need for ongoing randomized trials to test the value of adjuvant postoperative WBRT. Brain failures were relatively common in all three groups of patients, which suggests that doses greater than 30 Gy need to be studied.
Collapse
Affiliation(s)
- J G Armstrong
- Department of Radiation Oncology and Surgery, Memorial Sloan-Kettering Cancer Center, New York, NY
| | | | | | | | | | | |
Collapse
|
35
|
Veselis RA, Reinsel RA, Feshchenko VA, Wronski M, Dnistrian A, Dutchers S, Wilson R. Impaired memory and behavioral performance with fentanyl at low plasma concentrations. Anesth Analg 1994; 79:952-60. [PMID: 7978415 DOI: 10.1213/00000539-199411000-00023] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [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: 01/28/2023]
Abstract
Fentanyl is commonly administered to conscious patients by continuous epidural or intravenous (i.v.) infusions, or by the transdermal route, which result in relatively constant, low, concentrations of the drug. Previous studies of memory and cognitive effects have not been performed at constant plasma concentrations of fentanyl. Based on simulated infusions using the pharmacokinetic modeling program IV-SIM, we administered fentanyl or placebo to nine healthy volunteers (aged 21-45 yr) by continuous i.v. infusion, targeting plasma concentrations of 1, 1.5, and 2.5 ng/mL in succession. A battery of memory and psychomotor tasks was administered at each plasma concentration of fentanyl, and at two points in the recovery phase while drug levels were decreasing. At increasing plasma concentrations of fentanyl, we found the following effects on memory (in comparison with placebo): a progressive decline in verbal learning (P < 0.03); decreased delayed recognition of words presented at different test times (P < 0.02); and decreased spontaneous recall of pictures shown during infusion (P < 0.03). Fentanyl at concentrations above 2.5 ng/mL caused a performance decrement of 15%-30% relative to baseline on all the psychomotor tests administered. Plasma concentrations less than 2.25 ng/mL had negligible effects on performance with the exception of the critical flicker fusion frequency, which decreased by 5 Hz at plasma concentrations between 1.5 and 2.25 ng/mL. Visual analog scale (VAS) measures of mental and physical sedation were significantly affected by fentanyl, but euphoria was not demonstrable. All subjects receiving fentanyl experienced severe nausea and four of six had one or more episodes of emesis (P < 0.03).(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- R A Veselis
- Department of Anesthesiology and Critical Care Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY 10021
| | | | | | | | | | | | | |
Collapse
|
36
|
Veselis RA, Reinsel R, Wronski M. Analytical methods to differentiate similar electroencephalographic spectra: neural network and discriminant analysis. J Clin Monit Comput 1993; 9:257-67. [PMID: 8301333 DOI: 10.1007/bf02886696] [Citation(s) in RCA: 23] [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] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Differences in electroencephalographic (EEG) power spectra obtained under similar, but not identical, conditions may be difficult to discern using standard techniques. Statistical analysis may not be useful because of the large number of comparisons necessary. Visual recognition of differences also may be difficult. A new technique, neural network analysis, has been used successfully in other problems of pattern recognition and classification. We examined a number of methods of classifying similar EEG data: standard statistical analysis (analysis of variance), visual recognition, discriminant analysis, and neural network analysis. Twenty-nine volunteers received either thiopental (n = 9), midazolam (n = 10), or propofol (n = 10) in sedative doses in 3 different studies. These drugs produced very similar changes in the EEG power spectra. Except for beta 2 power during thiopental infusion, differences between drugs could not be detected using analysis of variance. Visual categorization was correct in 72% of the baseline EEGs, 70% of thiopental EEGs, 27% of propofol EEGs, and 46% of midazolam EEGs. A classification neural network (Learning Vector Quantization network) containing a Kohonen hidden layer was able to successfully classify 57 of 58 EEG samples (of 4 minutes' duration). Discriminant analysis had a similar rate of success. This level of performance was achieved by dividing the EEG power spectrum from 1 to 30 Hz into 15 2-Hz bandwidths. When the EEG power spectrum was divided into the "classical" frequency bandwidths (alpha, beta 1, beta 2, theta, delta), both neural network and discriminant analysis performance deteriorated. By training the network using only certain inputs we were able to identify drug-specific bandwidths that seemed to be important in correct classification. We conclude that propofol, thiopental, and midazolam produce different effects on the EEG and that both neural network and discriminant analysis are useful in identifying these differences. We also conclude that EEG spectra should be analyzed without using classical EEG bands (alpha, beta, etc.). Additionally, neural networks can be used to identify frequency bands that are "important" in specific drug effects on the EEG. Once a classification algorithm is obtained using either a neural network or discriminant analysis, it could be used as an on-line monitor to recognize drug-specific EEG patterns.
Collapse
Affiliation(s)
- R A Veselis
- Department of Anesthesiology, Memorial Sloan-Kettering Cancer Center, New York, NY 10021
| | | | | |
Collapse
|
37
|
|
38
|
Burt M, Wronski M, Arbit E, Galicich JH. Resection of brain metastases from non-small-cell lung carcinoma. Results of therapy. Memorial Sloan-Kettering Cancer Center Thoracic Surgical Staff. J Thorac Cardiovasc Surg 1992; 103:399-410; discussion 410-1. [PMID: 1312184] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The treatment of patients with a solitary brain metastasis has been evolving, with most centers recommending resection in patients with good performance status. To evaluate the results of resection of brain metastases from non-small-cell lung cancer, we reviewed our 16-year experience with 185 consecutive patients undergoing resection of brain metastases from 1974 to 1989, inclusive. There were 89 men and 96 women; ages ranged from 34 to 75 years (median 54). Sixty-five (35%) had synchronous and 120 (65%) metachronous brain metastases. Discounting the brain metastasis, 68 patients (37%) had stage I, 13 (7%) stage II, 62 (33%) stage IIIA, 30 (16%) stage IIIB, and 12 (6%) stage IV carcinoma. There was no significant difference in age, locoregional stage (TN), or histologic features in patients with synchronous versus metachronous lesions. The overall survival rates (n = 185) were as follows: 1 year, 55%; 2 years, 27%; 3 years, 18%; 5 years, 13%; and 10 years, 7% (median 14 months). There was no significant difference in survival between patients with synchronous and metachronous lesions. To evaluate the impact of locoregional stage and treatment of the primary site, we analyzed only those patients with synchronous brain metastases. Multivariate analysis demonstrated that locoregional stage had no significant effect on survival (p = 0.97), but complete resection of the primary disease significantly prolonged survival (p = 0.002). Therefore complete resection, and not stage, of the locoregional primary lesion is the primary determinant of survival in patients undergoing resection of brain metastases from non-small-cell lung cancer.
Collapse
Affiliation(s)
- M Burt
- Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, N.Y. 10021
| | | | | | | |
Collapse
|
39
|
|
40
|
|
41
|
Wronski M. Thiomercurimetric determination of carbon disulphide, carbonyl sulphide, thiols and hydrogen sulphide by use of 1,3-diaminopropane and tributyltin chloride. Talanta 1975. [DOI: 10.1016/0039-9140(75)80090-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
42
|
Wronski M. Thiomercurimetric determination of sulphur, aliphatic and aromatic thiols and disulphides in hydrocarbon solvents, using reduction with sodium aluminium bis(2-methoxyethoxy)dihydride. Talanta 1974. [DOI: 10.1016/0039-9140(74)80024-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
43
|
Bunzl K, Johannsen L, Bartušek M, Seifert B, Wronski M, Birr KH, Niemann A, Leuke RE, Stöhr H. Anorganische substanzen. Anal Bioanal Chem 1972. [DOI: 10.1007/bf00585269] [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: 11/24/2022]
|
44
|
|