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Mataac M, Rehani MM. Is a one percent occurrence of high-dose patients significant? Eur J Radiol 2024; 172:111340. [PMID: 38309214 DOI: 10.1016/j.ejrad.2024.111340] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 01/24/2024] [Indexed: 02/05/2024]
Abstract
Risk-free society is utopian. We come across risks in everyday life, and we use probabilities to get a feel of how risky a situation is. Risk probability numbers of around 1% are comforting, but an intercomparison of numbers among various low risks in popular situations can be enlightening. In this article, we compare risks of complications or death in several surgeries and risks in commercial air travel with risks for patients getting cumulative effective dose (CED) of 100 mSv or more, as the latter is a hot and controversial topic currently. The analysis shows that many common surgeries are a few tens or hundreds of times less risky than the risk from a 100 mSv dose, even though the former often frightens us more. Despite there being a much higher chance of developing cancer from radiation than being involved in a commercial plane accident, there is much less emphasis on patient radiation safety than aviation safety. Further, a look at the system of control on prescription drugs indicates that there is much to learn for policy planning. This analysis may help the International Commission on Radiological Protection (ICRP) in their review of recommendations.
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Li X, Hirsch JA, Rehani MM, Yang K, Marschall TA, Liu B. Patient follow-up for possible radiation injury from fluoroscopically-guided interventions: Need to consider high cumulative exposure from multiple procedures. Phys Med 2023; 106:102521. [PMID: 36610179 DOI: 10.1016/j.ejmp.2022.102521] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/19/2022] [Accepted: 12/27/2022] [Indexed: 01/06/2023] Open
Abstract
PURPOSE Patient skin dose from interventional fluoroscopy procedures may exceed the threshold of tissue injuries and established guidelines recommend patient follow-up for air kerma at reference point (Ka,r) ≥ 5 Gy for individual procedures. Patients may undergo multiple procedures and skin injuries may be possible by cumulative exposure, even when individually insufficient to cause injury. This study sought to quantify the frequency of patients whose individual procedure doses are below 5 Gy but whose cumulative Ka,r is ≥ 5 Gy. METHODS This retrospective study analyzed 37,917 consecutive procedures in interventional radiology and vascular surgery at a tertiary-care hospital between January 2016 and June 2021. Radiation dosage was retrieved from the fluoroscopy acquisition systems. For a patient receiving multiple procedures, but each with Ka,r < 5 Gy, cumulative Ka,r within 2, 7, 14, 30, 183, and 365 days was assessed. RESULTS Nearly 1/3rd (37.4 %) patients underwent multiple procedures. With individual procedures of Ka,r < 5 Gy exclusively, 1.9, 4.4, and 5.6 in 1000 patients received cumulative Ka,r of 5-14.1 Gy from the procedures within 30, 183, and 365 days, respectively. From the procedures within 14 days, 1.3 in 1000 patients received cumulative Ka,r of 5-11.4 Gy; and from those within 7 days, 0.87 in 1000 patients received 5-9.1 Gy. In comparison, 4.3 in 1000 patients received Ka,r of 5-12 Gy from a single procedure. CONCLUSIONS In the absence of guidelines on patient follow-up for multiple procedures, our study may provide good material for setting up such guidelines.
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Affiliation(s)
- Xinhua Li
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA.
| | - Joshua Adam Hirsch
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
| | - Madan M Rehani
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
| | - Kai Yang
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
| | - Theodore A Marschall
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
| | - Bob Liu
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
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Montero-Pastor N, Sánchez-Costa JT, Guerra-Rodríguez M, Sánchez-Alonso F, Moriano C, Loricera J, Díaz-González F. Development of a web tool to calculate the cumulative dose of glucocorticoids. Reumatol Clin (Engl Ed) 2023; 19:1-5. [PMID: 36603961 DOI: 10.1016/j.reumae.2022.11.001] [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] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/01/2022] [Indexed: 01/04/2023]
Abstract
INTRODUCTION Glucocorticoids are associated with serious side effects related to dosing and time of use. Unfortunately, there is no standard method for determining glucocorticoid exposure, especially in patients undergoing long-term treatment. OBJECTIVE The aim of this work was to create a free and easy-to-use web application to calculate, in a systematic way, the total cumulative dose of corticosteroids. METHODS The total cumulative dose is calculated as the sum of all periods of treatment with different doses of corticosteroids, and is expressed as the equivalent dose of prednisone in mg. Glucocorticoid doses during periods in which the available information is missing or incomplete are estimated by systematic assumptions. RESULTS A simulation exercise using standard patterns of steroid use in polymyalgia rheumatica, and giant cell arteritis showed that even when the period of no information reached 50% of the time, the accuracy of the calculator had a mean absolute percentage error (MAPE)<7%. CONCLUSION This tool simplifies and standardizes the glucocorticoids cumulative dose calculation, thereby minimizing bias in the assessment of glucocorticoid cumulative dose.
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Affiliation(s)
- Nuria Montero-Pastor
- Unidad de Investigación de la Sociedad Española de Reumatología, Calle Marqués de Duero n°5, 28001 Madrid, Spain
| | - Jesús T Sánchez-Costa
- Unidad de Investigación de la Sociedad Española de Reumatología, Calle Marqués de Duero n°5, 28001 Madrid, Spain
| | - Mercedes Guerra-Rodríguez
- Unidad de Investigación de la Sociedad Española de Reumatología, Calle Marqués de Duero n°5, 28001 Madrid, Spain
| | - Fernando Sánchez-Alonso
- Unidad de Investigación de la Sociedad Española de Reumatología, Calle Marqués de Duero n°5, 28001 Madrid, Spain
| | - Clara Moriano
- Servicio de Reumatología, Complejo Asistencial Universitario de León, C/Altos de Nava, S/N, 24008 León, Spain
| | - Javier Loricera
- Servicio de Reumatología, Hospital Universitario Marqués de Valdecilla, Av. Valdecilla, 25, 39008 Santander, Spain
| | - Federico Díaz-González
- Departamento de Medicina Interna, Dermatología y Psiquiatría, Universidad de La Laguna, Spain; Servicio de Reumatología, Hospital Universitario de Canarias, Calle Ofra s/n, 38320 La Laguna, Santa Cruz de Tenerife, Spain.
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De Felice F, Botticelli A. Cetuximab: Its role in patients unfit for cisplatin. Oral Oncol 2021; 124:105654. [PMID: 34864298 DOI: 10.1016/j.oraloncology.2021.105654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 10/19/2022]
Affiliation(s)
- Francesca De Felice
- Radiation Oncology, Policlinico Umberto I, Department of Radiological, Oncological and Pathological Sciences, "Sapienza" University of Rome, Viale Regina Elena 326, 00161 Rome, Italy.
| | - Andrea Botticelli
- Medical Oncology Unit B, Policlinico Umberto I, Department of Radiological, Oncological and Pathological Sciences, "Sapienza" University of Rome, Viale Regina Elena 326, 00161 Rome, Italy
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John AT, Madhuri V. A Preliminary Survey of Women Orthopaedic Surgeons on Awareness of Radiation Safety Practice and Breast Cancer Risk in India. Indian J Orthop 2021; 56:452-456. [PMID: 35251509 PMCID: PMC8854465 DOI: 10.1007/s43465-021-00524-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 09/13/2021] [Indexed: 02/04/2023]
Abstract
OBJECTIVES To assess women surgeons' awareness of radiation protection protocols, cumulative dose, safety measures, radiation exposure, and breast cancer risk in India. METHODS The data were acquired through a survey monkey questionnaire circulated to women orthopaedic surgeons across the country through the WOICE group, e-mails and phone. The questionnaire assessed the respondents' awareness of radiation protection measures and level of exposure. Medical history on breast cancer during their professional life, time of diagnosis, and radiation exposure were collected. Data were analysed and expressed as percentages. RESULTS Fifty-one women orthopaedic surgeons responded. These were sub-grouped into early and late-career group based on whether they had worked in orthopaedics for less than 10 years (n = 33) or 10 or more years (n = 18). The mean number of years of practice of the respondents was 8.1 years, and for the group with 10 or more years was 18.7 years. 90.2% reported compliance to the lead shield, while 9.8% (n = 5) were non-compliant because of the shield's weight. Of the included respondents, 88.8% are currently working. Among all the respondents, only 13.7% (n = 7) use a radiation dosimeter. Not surprisingly, 88.2% (n = 45) of all respondents were unaware of the total radiation exposure received. Two surgeons in the more than 10-year practice category reported a history of breast carcinoma. CONCLUSIONS This preliminary report suggested a need for more awareness of radiation protection measures among women orthopaedic surgeons. Hence, along with the practice of wearing a lead gown, use of lightweight shield, awareness on exposure measure and use of radiation dosimeter should be encouraged.
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Affiliation(s)
- Ansu Thankam John
- Department of Orthopaedics, Christian Medical College, Vellore, 632 002 Tamil Nadu India
| | - Vrisha Madhuri
- Department of Paediatric Orthopaedics, Christian Medical College, Vellore, 632 002 Tamil Nadu India
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Vano E, Frija G, Loose R, Paulo G, Efstathopoulos E, Granata C, Andersson J. Dosimetric quantities and effective dose in medical imaging: a summary for medical doctors. Insights Imaging 2021; 12:99. [PMID: 34255191 PMCID: PMC8276901 DOI: 10.1186/s13244-021-01041-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 12/21/2022] Open
Abstract
This review presents basic information on the dosimetric quantities used in medical imaging for reporting patient doses and establishing diagnostic reference levels. The proper use of the radiation protection quantity "effective dose" to compare doses delivered by different radiological procedures and different imaging modalities with its uncertainties and limitations, is summarised. The estimates of population doses required by the European Directive on Basic Safety Standards is commented on. Referrers and radiologists should be familiar with the dose quantities to inform patients about radiation risks and benefits. The application of effective dose on the cumulative doses from recurrent imaging procedures is also discussed. Patient summary: Basic information on the measurement units (dosimetric quantities) used in medical imaging for reporting radiation doses should be understandable to patients. The Working Group on "Dosimetry for imaging in clinical practice" recommended that a brief explanation on the used dosimetric quantities and units included in the examination imaging report, should be available for patients. The use of the quantity "effective dose" to compare doses to which patients are exposed to from different radiological procedures and its uncertainties and limitations, should also be explained in plain language. This is also relevant for the dialog on to the cumulative doses from recurrent imaging procedures. The paper summarises these concepts, including the need to estimate the population doses required by the European Directive on Basic Safety Standards. Referrers and radiologists should be familiar with the dose quantities to inform patients about radiation risks and benefits.
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Affiliation(s)
- Eliseo Vano
- Radiology Department, Complutense University, 28040, Madrid, Spain.
| | - Guy Frija
- Université de Paris, 12 Rue de l'École de Médecine, 75006, Paris, France
| | - Reinhard Loose
- Institute of Medical Physics, Hospital Nuremberg, Prof.-Ernst-Nathan-Str. 1, 90419, Nuremberg, Germany
| | - Graciano Paulo
- ESTESC-Coimbra Health School, Medical Imaging and Radiotherapy Department, Instituto Politécnico de Coimbra, Rua 5 de Outubro, S. Martinho Do Bispo, 3046-854, Coimbra, Portugal
| | - Efstathios Efstathopoulos
- 2Nd Department of Radiology, Medical Physics Unit, National and Kapodistrian University of Athens, Attikon University Hospital, 12462, Athens, Greece
| | - Claudio Granata
- Department of Paediatric Radiology, Institute for Maternal and Child Health - IRCCS "Burlo Garofolo", Trieste, Italy
| | - Jonas Andersson
- Department of Radiation Sciences, Umea University, Umeå, Sweden
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Żok J, Bieńkowski M, Radecka B, Korniluk J, Adamowicz K, Duchnowska R. Impact of relative dose intensity of oxaliplatin in adjuvant therapy among stage III colon cancer patients on early recurrence: a retrospective cohort study. BMC Cancer 2021; 21:529. [PMID: 33971834 PMCID: PMC8112028 DOI: 10.1186/s12885-021-08183-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 04/13/2021] [Indexed: 02/04/2023] Open
Abstract
Background Oxaliplatin-based therapy with FOLFOX-4 or CAPOX administered over 6 months remains the standard adjuvant treatment for stage III colon cancer (CC) patients. However, many patients experience dose reduction or early termination of chemotherapy due to oxaliplatin toxicity, which may increase the risk of early recurrence. The objective of this study was to analyze the relationship between the relative dose intensity of oxaliplatin (RDI-O) and early recurrence among stage III CC patients. Methods The study included 365 patients treated at five oncology centers in Poland between 2000 and 2014. Survival analysis was performed using the Kaplan-Meier method. Univariate analysis was performed using the Cox proportional hazard model; multivariate analysis was performed with the stepwise forward approach. For all analyses the α level of 0.05 was employed. Results The median follow-up was 51.8 months (range 8.2–115.1). Early recurrence < 36 months after surgery occurred in 130 patients (37.8%). In this group 51 (39.2%) and 87 (66.9%) of patients were low and high-risk, respectively. Receipt < 60% of RDI-O was associated with early recurrence within 18 months after surgery (OR = 2.05; 95%CI: 1.18–3.51; p = 0.010), especially in low-risk group (HR = 1.56 (95%CI: 0.96–2.53), p = 0.07). In the multivariate analysis early recurrence was correlated with grade (OR = 2.47; 95% CI: 1.25–4.8; p = 0.008), pN (OR = 2.63; 95% CI: 1.55–4.54; p < 0.001), the number of lymph nodes harvested (OR = 0.51; 95% CI: 0.29–0.86; p = 0.013) and RDI-O (OR = 1.91; 95%CI: 1.06–3.39; p = 0.028). The early vs. late recurrence negatively correlated with OS regardless of the RDI-O (HR = 22.9 (95%CI: 13.9–37.6; p < 0.001). Conclusions RDI-O < 60% in adjuvant therapy among stage III CC (especially in low-risk group) increases the risk of early recurrence within 18 months of surgery. Patients with early recurrence showed worse overall survival regardless of the RDI-O.
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Affiliation(s)
- Jolanta Żok
- Department of Chemotherapy, Center of Pulmonology and Chemotherapy, 58-580, Szklarska Poręba, Poland
| | - Michał Bieńkowski
- Department of Pathomorphology, Medical University of Gdańsk, 80-214, Gdańsk, Poland
| | - Barbara Radecka
- Department of Oncology, Institute of Medical Science, University of Opole, 46-020, Opole, Poland
| | - Jan Korniluk
- Department of Oncology, Military Institute of Medicine, 04-141, Warsaw, Poland
| | | | - Renata Duchnowska
- Department of Oncology, Military Institute of Medicine, 04-141, Warsaw, Poland.
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Munoz F, Fiorica F, Caravatta L, Rosa C, Ferella L, Boldrini L, Fionda B, Alitto AR, Nardangeli A, Dionisi F, Arcangeli S, Di Marzo A, Pontoriero A, Donato V, Massaccesi M. Outcomes and toxicities of re-irradiation for prostate cancer: A systematic review on behalf of the Re-Irradiation Working Group of the Italian Association of Radiotherapy and Clinical Oncology (AIRO). Cancer Treat Rev 2021; 95:102176. [PMID: 33743409 DOI: 10.1016/j.ctrv.2021.102176] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 11/24/2022]
Abstract
AIMS The best therapeutic approach for local relapses of previously irradiated prostate cancer (PC) is still not defined. Re-irradiation (Re-I) could offer a chance of cure for highly selected patients, although high quality evidences are lacking. The aim of our study is to provide a literature review on efficacy and safety of Re-I. METHODS Only studies where Re-I field overlaps with previous radiotherapy were considered. To determine 2 and 4 years overall mortality (OM), 2 and 4 years biochemical failure (BF) and pooled acute and late G ≥ 3 toxicities rate, a meta-analysis over single arm study was performed. RESULTS Thirty-eight studies with 1194 patients were included. Median follow-up from Re-I was 30 months (10-94 months). Brachytherapy (BRT) was the most used Re-I technique (27 studies), followed by Stereotactic Body Radiotherapy (SBRT) (9) and External Beam Radiation Therapy (EBRT) (2). Re-I prescription doses ranged from 19 Gy in single HDR fraction to 145 Gy (interstitial BRT). The pooled 2 and 4 years OM rates were 2.1% (95%CI:1.1-3.7%, P < 0.001) and 12.5% (95%CI:8.1-19.5%; P < 0.001). The pooled 2 years BF rate was 24% (95% CI: 19.1-30.2%, P < 0.001). The pooled 4 years BF was 35.6% (95% CI: 28.7-44.3%, P < 0.001). The pooled result of G ≥ 3 acute toxicity was 1.4% (95%CI: 0.7-3%, P < 0.001). One hundred and three G ≥ 3 late adverse events were reported, with a pooled result of G ≥ 3 late toxicity of 8.7% (95%CI: 5.8-13%, P < 0.001). CONCLUSIONS Re-I of local failures from PC showed promising OM and biochemical control rates with a safe toxicity profile.
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Tian Z, Yang Y, Yang Y, Zhang F, Li P, Wang J, Yang J, Zhang P, Yao W, Wang X. High cumulative doxorubicin dose for advanced soft tissue sarcoma. BMC Cancer 2020; 20:1139. [PMID: 33228579 PMCID: PMC7684756 DOI: 10.1186/s12885-020-07663-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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] [Received: 08/26/2020] [Accepted: 11/18/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The recommended cumulative doxorubicin dose in soft tissue sarcoma (STS) treatment was based on cardiotoxicity data from retrospective studies of breast cancer patients. However, the treatment and prognosis of STS and breast cancer are quite different, and reference to breast cancer data alone may not reflect the efficacy of doxorubicin treatment in STS. This study, thus, aimed to review and analyze clinical data of STS patients treated with a high cumulative doxorubicin dose, to provide a reference for treatment selection and clinical trial design. METHODS We retrospectively collected and analyzed clinical data of patients with advanced STS who received doxorubicin-based chemotherapy from January 2016 to January 2020. The patients were divided into a standard-dose group (who received ≤6 cycles of doxorubicin after the initial diagnosis) and an over-dose group (who were re-administered doxorubicin [doxorubicin-rechallenge] after receiving 6 cycles of doxorubicin therapy discontinuously). Patient characteristics, cumulative doxorubicin dose, objective response rate (ORR), disease control rate (DCR), progression-free survival (PFS), cardiotoxicity incidence, and treatment effectiveness were evaluated in both groups. RESULTS A total of 170 patients with advanced STS were recruited (146 in the standard-dose group and 24 in the over-dose group). The average cumulative doxorubicin dose was 364.04 ± 63.81 mg/m2 in the standard-dose group and 714.38 ± 210.09 mg/m2 in the over-dose group. The ORR, DCR, and median PFS were 15.07, 58.9%, and 6 (95% confidence interval [CI]: 5.8-6.5) months in the standard-dose group and 16.67, 66.67%, and 4 (95%CI: 2.0-5.8) months in the over-dose group, respectively. Symptomatic heart failure occurred in five patients (3.42%) of the standard-dose group and in one patient (4.17%) of the over-dose group. In these patients with cardiotoxicity, doxorubicin was discontinued, and all of them died of uncontrolled tumor growth. No drug-related deaths occurred. CONCLUSIONS The continuation of or rechallenge with doxorubicin beyond the recommended cumulative dose could be a promising therapeutic option in the treatment of chemotherapy-sensitive advanced sarcomas. Further evaluation is necessary in prospective trials.
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Affiliation(s)
- Zhichao Tian
- Department of Bone and Soft Tissue, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Dongming road, Zhengzhou, 450008, Henan Province, China.
| | - Yang Yang
- Huanghe Science and Technology College, Zhengzhou, 450063, Henan Province, China
| | - Yonghao Yang
- Department of Immunotherapy, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, 450008, Henan Province, China
| | - Fan Zhang
- Department of Bone and Soft Tissue, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Dongming road, Zhengzhou, 450008, Henan Province, China
| | - Po Li
- Department of Bone and Soft Tissue, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Dongming road, Zhengzhou, 450008, Henan Province, China
| | - Jiaqiang Wang
- Department of Bone and Soft Tissue, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Dongming road, Zhengzhou, 450008, Henan Province, China
| | - Jinpo Yang
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, 450008, Henan Province, China
| | - Peng Zhang
- Department of Bone and Soft Tissue, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Dongming road, Zhengzhou, 450008, Henan Province, China
| | - Weitao Yao
- Department of Bone and Soft Tissue, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Dongming road, Zhengzhou, 450008, Henan Province, China
| | - Xin Wang
- Department of Bone and Soft Tissue, the Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Dongming road, Zhengzhou, 450008, Henan Province, China
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Embring A, Onjukka E, Mercke C, Lax I, Berglund A, Bornedal S, Wennberg B, Friesland S. Overlapping volumes in re-irradiation for head and neck cancer - an important factor for patient selection. Radiat Oncol 2020; 15:147. [PMID: 32513217 PMCID: PMC7278185 DOI: 10.1186/s13014-020-01587-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/28/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND There is a lack of consensus concerning the definition of re-irradiation and re-irradiation volumes in head and neck cancer (HNC). The aim of the present study is to introduce a more strict definition of the re-irradiated volume that might better predict the risk of serious side-effects from treatment. METHODS Fifty-four consecutive patients re-irradiated for HNC cancer were retrospectively analysed. CT images were deformably registered and the dose distributions accumulated after conversion to EQD2. Patients with a cumulative dose of ≥100 Gy in the overlapping volume (V100) were included in the study. Survival data and radiation-related acute and late toxicities were recorded. RESULTS The overall survival of all included patients at 2 and 5 years was 42.6 and 27.3% respectively and the progression free survival at 2 and 5 years was 32.5 and 28.5% respectively. The overall rate of any event of severe (grade ≥ 3) acute and late toxicity was 26 and 51%, respectively. We found that severe acute toxicity was more common in patients who had a larger overlapping volume (V100 > mean) where 43% of the patients experienced grade ≥ 3 acute toxicity, compared to the patients with smaller overlapping volumes (V100 < mean) where only 11% had severe toxicity (p = 0.02). The seemingly high rates of late toxicity in the present study could be due to the use of a more strict definition of re-irradiation. In previous studies also patients with low dose overlap are included and our results imply that there is a risk that previous studies might have overestimated the risk-benefit ratio in re-irradiation of HNC. CONCLUSIONS Our study describes the outcome of a patient material where a more strict definition of the re-irradiated volume is used. With this definition, which could better describe the volume of highest risk for serious complications, we found that larger such overlapping volumes result in an increase in severe acute side-effects. A clear definition of re-irradiation and re-irradiation volumes is of utmost importance for future studies of HNC to make results from different studies comparable.
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Affiliation(s)
- Anna Embring
- Department of Oncology, Karolinska University Hospital, Anna Steckséns gata 41, 171 76, Stockholm, Solna, Sweden. .,Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden.
| | - Eva Onjukka
- Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden.,Medical Radiation Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Claes Mercke
- Department of Oncology, Karolinska University Hospital, Anna Steckséns gata 41, 171 76, Stockholm, Solna, Sweden.,Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden
| | - Ingmar Lax
- Medical Radiation Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Anders Berglund
- Epistat Epidemiology and Statistics Consulting, Uppsala, Sweden
| | - Sara Bornedal
- Medical Radiation Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Berit Wennberg
- Medical Radiation Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Signe Friesland
- Department of Oncology, Karolinska University Hospital, Anna Steckséns gata 41, 171 76, Stockholm, Solna, Sweden.,Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden
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Ngamphaiboon N, Dechaphunkul A, Setakornnukul J, Dechaphunkul T, Jiratrachu R, Suktitipat B, Jiarpinitnun C, Pattaranutaporn P, Danchaivijitr P. Optimal cumulative dose of cisplatin for concurrent chemoradiotherapy among patients with non-metastatic nasopharyngeal carcinoma: a multicenter analysis in Thailand. BMC Cancer 2020; 20:518. [PMID: 32493288 PMCID: PMC7271552 DOI: 10.1186/s12885-020-07024-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 05/28/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Chemoradiotherapy (CRT) with high cumulative doses (CDs) of cisplatin has been considered the standard of care for non-metastatic nasopharyngeal carcinoma (NPC). However, given most patients' inability to tolerate high CDs due to cisplatin-related toxicities, the optimal CD of cisplatin during CRT remains undetermined. METHODS Patients with non-metastatic NPC who received CRT with cisplatin between 2007 and 2017 were identified through the Thai head and neck cancer multicenter database and then categorized according to cisplatin CD (mg/m2) received. All complications and cisplatin-related toxicities during CRT were recorded. RESULTS We identified 779 non-metastatic NPC patients receiving low (≤150; n = 97), intermediate (151-250; n = 411), and high (> 250; n = 271) CDs of cisplatin. Low CD patients had significantly lower mean actual radiation dose (p < 0.001) and more radiotherapy delay (p = 0.010), while intermediate CD patients had the least hospitalization (p < 0.001). Overall, 39.3% of the patients experienced cisplatin-related toxicity, which was associated with poor overall survival (OS) (p = 0.001). Acute kidney injury was observed in 7% in all patients, which was highest among low CD patients (15.5%; p = 0.002). Intermediate CD patients had significantly longer median OS than the low and high groups (64 vs. 49.8 vs. 53.2, respectively; p = 0.015). Univariate, but not multivariate, analysis showed that CD of cisplatin was significantly associated with OS. CONCLUSION CD of cisplatin during CRT was not an independent prognostic factor for OS. An intermediate CD induced minimal toxicity without compromising survival and should be considered the optimal CD. Nonetheless, a randomized phase 3 study evaluating the optimal CD of cisplatin is warranted.
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Affiliation(s)
- Nuttapong Ngamphaiboon
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Ratchathewi, Bangkok, 10400, Thailand.
| | - Arunee Dechaphunkul
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine, Songklanagarind Hospital, Prince of Songkla University, Hat Yai, Thailand
| | - Jiraporn Setakornnukul
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Tanadech Dechaphunkul
- Department of Otorhinolaryngology Head and Neck Surgery, Faculty of Medicine, Songklanagarind Hospital, Prince of Songkla University, Hat Yai, Thailand
| | - Rungarun Jiratrachu
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Songklanagarind Hospital, Prince of Songkla University, Hat Yai, Thailand
| | - Bhoom Suktitipat
- Department of Biochemistry, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Integrative Computaional BioScience Center, Mahidol University, Bangkok, Thailand
| | - Chuleeporn Jiarpinitnun
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Poompis Pattaranutaporn
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Pongwut Danchaivijitr
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Thanon Wang Lang, Siriraj, Bangkok Noi, Bangkok, 10700, Thailand.
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Weykamp F, Seidensaal K, Rieken S, Green K, Mende S, Zaoui K, Freier K, Adeberg S, Debus J, Welte SE. Age-dependent hemato- and nephrotoxicity in patients with head and neck cancer receiving chemoradiotherapy with weekly cisplatin. Strahlenther Onkol 2020; 196:515-21. [PMID: 31784802 DOI: 10.1007/s00066-019-01550-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 11/06/2019] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND PURPOSE In cases of simultaneous chemoradiotherapy (CRT), early recognition of toxic side effects is important, as drug discontinuation may prevent further injury. It appears favorable to undertake further steps to investigate whether patient subgroups behave differently depending on their toxicity profile. METHODS We retrospectively analyzed 125 consecutive patients with non-metastasized carcinoma of the head and neck who were treated with CRT (cisplatin 40 mg/m2 weekly) in 2013/2014. Patients were planned to receive six cycles of cisplatin. Statistical analyses were performed using the chi2 test, t-test, Kaplan-Meier method, and the log-rank test, as appropriate. RESULTS Eighty-six patients did not reach the intended sixth cycle (68.8%; 60.0% of whom were ≥60 years, p < 0.05). Acute kidney injury (glomerular filtration rate <60 mL/min/1.73m2) was the most common reason for drug discontinuation (26.7%; 82.6% of whom were ≥60 years; p < 0.01), followed by leukopenia <3/nL (23.3%; 75% of whom were <60 years; p < 0.01) and infection (11.6%). Patients who underwent ≥5 cycles were associated with prolonged overall survival and metastasis-free survival after CRT (p < 0.02; median follow-up 24 months), especially patients <60 years. CONCLUSION Acute kidney injury was the most common side effect in patients ≥60 years, whereas leukopenia characteristically occurred significantly more often in younger patients. Discontinuing cisplatin during CRT was associated with a worse outcome, especially in patients <60 years.
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13
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Zielen S, Kuna P, Aberer W, Lassmann S, Pfaar O, Klimek L, Wade A, Kluehr K, Raab J, Wessiepe D, Lee D, Kramer M, Gunawardena K, Higenbottam T, Heath M, Skinner M, de Kam P. Strong dose response after immunotherapy with PQ grass using conjunctival provocation testing. World Allergy Organ J 2019; 12:100075. [PMID: 31709029 PMCID: PMC6831906 DOI: 10.1016/j.waojou.2019.100075] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 09/19/2019] [Accepted: 09/24/2019] [Indexed: 12/24/2022] Open
Abstract
Background Pollinex Quattro Grass (PQ Grass) is an effective, well-tolerated, short pre-seasonal subcutaneous immunotherapy to treat seasonal allergic rhinoconjunctivitis (SAR) due to grass pollen. In this Phase II study, 4 cumulative doses of PQ Grass and placebo were evaluated to determine its optimal cumulative dose. Methods Patients with grass pollen-induced SAR were randomised to either a cumulative dose of PQ Grass (5100, 14400, 27600 and 35600 SU) or placebo, administered as 6 weekly subcutaneous injections over 31-41 days (EudraCT number 2017-000333-31). Standardized conjunctival provocation tests (CPT) using grass pollen allergen extract were performed at screening, baseline and post-treatment to determine the total symptom score (TSS) assessed approximately 4 weeks after dosing. Three models were pre-defined (Emax, logistic, and linear in log-dose model) to evaluate a dose response relationship. Results In total, 95.5% of the 447 randomized patients received all 6 injections. A highly statistically significant (p < 0.0001), monotonic dose response was observed for all three pre-specified models. All treatment groups showed a statistically significant decrease from baseline in TSS compared to placebo, with the largest decrease observed after 27600 SU (p < 0.0001). The full course of 6 injections was completed by 95.5% of patients. Treatment-emergent adverse events were similar across PQ Grass groups, and mostly mild and transient in nature. Conclusions PQ Grass demonstrated a strong curvilinear dose response in TSS following CPT without compromising its safety profile.
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Key Words
- ADRs, adverse drug reactions
- AE, adverse events
- AIT, allergen immunotherapy
- ANCOVA, analysis of covariance
- ARC, adverse reaction complexes
- Allergen immunotherapy
- Allergoid
- CIA-CPT, Culture – Independent Assessment of the Conjunctival Provocation Test
- CPT, conjunctival provocation test
- Cumulative dose
- Curvilinear dose response
- EAACI, European Academy of Allergy and Clinical Immunology
- EMA, European Medicine Agency
- FAS, Full Analysis Set
- FEV, forced expiratory volume
- FVC, forced vital capacity
- Grass pollen
- HEP, Histamine Equivalent Potency
- LPS, lipopolysaccharide
- MCP-Mod, Multiple Comparison Procedure and Modelling
- MCT, microcrystalline tyrosine
- MPL, Monophosphoryl Lipid A
- MedDRA, Medical Dictionary for Regulatory Activities
- PPS, Per Protocol Set
- SAEs, serious adverse events
- SAF, safety set
- SAR, seasonal allergic rhinoconjunctivitis
- SD, standard deviation
- SU, standardized units
- TEAEs, treatment-emergent adverse events
- TLR, Toll-like receptor
- TSS, Total Symptom Score
- mFAS, Modified Full Analysis Set
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Affiliation(s)
- S. Zielen
- Department for Children and Adolescents, Division of Allergology, Pulmonology and Cystic fibrosis, Goethe University, Frankfurt, Germany
| | - P. Kuna
- Poradnia Alergologii i Chorób Płuc Lodz, Poland
| | - W. Aberer
- Department of Dermatology, Medical University of Graz, Graz, Austria
| | - S. Lassmann
- Specialist in Otolaryngology, Saalfeld, Germany
| | - O. Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Rhinology and Allergy, University Hospital Marburg, Philipps-Universität Marburg, Germany
| | - L. Klimek
- Centre for Rhinology and Allergology, Wiesbaden, Germany
| | - A. Wade
- Allergy Therapeutics Ltd., Worthing, UK
| | - K. Kluehr
- Allergy Therapeutics Ltd., Worthing, UK
| | - J. Raab
- Allergy Therapeutics Ltd., Worthing, UK
| | - D. Wessiepe
- Metronomia Clinical Research GmbH, Munich, Germany
| | - D. Lee
- Allergy Therapeutics Ltd., Worthing, UK
| | | | | | | | | | | | - P.J. de Kam
- Allergy Therapeutics Ltd., Worthing, UK
- Corresponding author. Allergy Therapeutics (UK) Ltd, Dominion Way Worthing, West Sussex BN14 8SA, UK
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Ravichandran S, Chouthai NS, Patel B, Sharma A, Gupte A, Ma MM, Mamilla D, Lulic‐Botica M, Thomas R, Kamat D. Higher daily doses of caffeine lowered the incidence of moderate to severe neurodevelopmental disabilities in very low birth weight infants. Acta Paediatr 2019; 108:430-435. [PMID: 29920770 DOI: 10.1111/apa.14465] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 06/15/2018] [Indexed: 12/24/2022]
Abstract
AIM We determined the influence of cumulative dosing of caffeine citrate on the neurodevelopmental outcomes of low birth weight (VLBW) infants at 18-22 months of postmenstrual age. METHODS This retrospective chart analysis was conducted at Detroit Medical Center, Michigan, USA. The 181 infants we included were born between January 2006 and December 2016, were less than 32 weeks of gestational age and weighed less than 1500 grams. Data on their perinatal and postnatal characteristics were retrieved from their medical records and they were assessed using the Bayley Scales of Infant Development - Third Edition. RESULTS The 64 infants with no neurodevelopmental disability or a mild disability received a significantly higher average daily dose (mg/kg/day) of caffeine citrate with a median of 7.58 (range 2.7-12.2) mg/kg/day, than the 79 infants with a moderate to severe disability, who received a median of 6.47 (range 3.1-12.5, p = 0.01). The total cumulative dose had no effect on bronchopulmonary dysplasia or neurodevelopmental outcomes. CONCLUSION A higher average daily dose of caffeine citrate was associated with better neurodevelopmental outcomes of VLBW infants. However, the cumulative dose did not have an impact on their short-term or long-term outcomes. Further research is needed to confirm our findings.
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Affiliation(s)
- Saranya Ravichandran
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | - Nitin Shashikant Chouthai
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
- Division of Neonatal‐Perinatal Medicine Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | - Bhavyata Patel
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | - Amit Sharma
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | - Avanti Gupte
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | - Mia Michelle Ma
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | - Divya Mamilla
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | | | - Ronald Thomas
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
| | - Deepak Kamat
- Carman and Ann Adams Department of Pediatrics Wayne State University Detroit MI USA
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15
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Vähätalo I, Ilmarinen P, Tuomisto LE, Niemelä O, Kankaanranta H. Inhaled corticosteroids and asthma control in adult-onset asthma: 12-year follow-up study. Respir Med 2018; 137:70-76. [PMID: 29605216 DOI: 10.1016/j.rmed.2018.02.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/26/2018] [Accepted: 02/28/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Prescribed inhaled corticosteroid (ICS) doses in asthma have been studied in cross-sectional settings whereas long-term follow-up studies have not been carried out. OBJECTIVE To evaluate prescribed medication longitudinally by calculating cumulative ICS doses and dose changes in a cohort of new-onset adult asthma during 12 years and in different groups of asthma control. METHODS A total of 203 patients were followed for 12 years as part of Seinäjoki Adult Asthma Study (SAAS). All asthma-related visits and prescribed medication over the study period were collected from medical records. RESULTS Total cumulative ICS dose for the 12-year follow-up period was 3.4g (±SEM 0.1) per patient. Both respiratory specialists and GPs prescribed step-ups and step-downs in ICS treatment and in total 649 dose changes were noted during the follow-up (median 3(1-5) per patient). Patients with uncontrolled asthma received higher ICS doses throughout the follow-up period, and therefore, cumulative 12-year ICS dose (3.8g ± SEM 0.2) in this group was higher than that in those with partially controlled (3.4g ± SEM 0.2) or controlled disease (2.9g ± SEM 0.2) (p = 0.0001). Patients with uncontrolled asthma were also prescribed a higher number of ICS dose changes than patients with controlled disease. CONCLUSION Despite frequent dose changes and high ICS doses during the 12-year follow-up, the level of asthma control remained poor in patients with uncontrolled asthma. This suggests that high ICS doses may not be effective enough for management of disease in patients with uncontrolled adult-onset asthma and novel targeted treatments are required.
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Affiliation(s)
- Iida Vähätalo
- Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland.
| | - Pinja Ilmarinen
- Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland.
| | - Leena E Tuomisto
- Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland.
| | - Onni Niemelä
- Department of Laboratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland; University of Tampere, Tampere, Finland.
| | - Hannu Kankaanranta
- Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland; Department of Respiratory Medicine, University of Tampere, Tampere, Finland.
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16
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Roser K, Schoeni A, Röösli M. Mobile phone use, behavioural problems and concentration capacity in adolescents: A prospective study. Int J Hyg Environ Health 2016; 219:759-769. [PMID: 27665258 DOI: 10.1016/j.ijheh.2016.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/04/2016] [Accepted: 08/20/2016] [Indexed: 10/21/2022]
Abstract
The aim of this study is to prospectively investigate whether exposure to radiofrequency electromagnetic fields (RF-EMF) emitted by mobile phones and other wireless communication devices is related to behavioural problems or concentration capacity in adolescents. The HERMES (Health Effects Related to Mobile phonE use in adolescentS) study sample consisted of 439 Swiss adolescents aged 12-17 years. Behavioural problems were assessed using the Strengths and Difficulties Questionnaire (SDQ), concentration capacity of the adolescents was measured by means of a standardized computerized cognitive test named FAKT. Cross-sectional and longitudinal (1year of follow-up) analyses were performed to investigate possible associations between behavioural problems and concentration capacity and different exposure measures: self-reported and operator-recorded wireless communication device use, cumulative RF-EMF brain and whole body dose and measured personal RF-EMF exposure. In the cross-sectional analyses behavioural problems were associated with several self-reported wireless device use measures but not operator-recorded mobile phone use measures, concentration capacity was associated with several self-reported and operator-recorded exposures. The longitudinal analyses point towards absence of associations. The lack of consistent exposure-response patterns in the longitudinal analyses suggests that behavioural problems and concentration capacity are not affected by the use of wireless communication devices or RF-EMF exposure. Information bias and reverse causality are likely explanations for the observed cross-sectional findings.
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Affiliation(s)
- Katharina Roser
- Swiss Tropical and Public Health Institute, Socinstrasse 57, P.O. Box, CH-4002 Basel, Switzerland; University of Basel, Petersplatz 1, CH-4003 Basel, Switzerland.
| | - Anna Schoeni
- Swiss Tropical and Public Health Institute, Socinstrasse 57, P.O. Box, CH-4002 Basel, Switzerland; University of Basel, Petersplatz 1, CH-4003 Basel, Switzerland.
| | - Martin Röösli
- Swiss Tropical and Public Health Institute, Socinstrasse 57, P.O. Box, CH-4002 Basel, Switzerland; University of Basel, Petersplatz 1, CH-4003 Basel, Switzerland.
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17
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Bjarnason TA, Thakur Y, Chakraborty S, Liu P, O'Malley ME, Coulden R, Noga M, Mason A, Mayo J. Canadian Association of Radiologists Radiation Protection Working Group: Automated Patient-Specific Dose Registries—What Are They and What Are They Good for? Can Assoc Radiol J 2015; 66:192-7. [PMID: 25896452 DOI: 10.1016/j.carj.2014.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 11/28/2014] [Accepted: 12/01/2014] [Indexed: 10/23/2022] Open
Abstract
Medical radiation should be used appropriately and with a dose as low as reasonably achievable. Dose monitoring technologies have been developed that automatically accumulate patient dose indicators, providing effective dose estimates and patient-specific dose histories. Deleterious radiation related events have prompted increased public interest in the safe use of medical radiation. Some view individualized patient dose histories as a tool to help manage the patient dose. However, it is imperative that dose monitoring technologies be evaluated on the outcomes of dose reduction and effective patient management. Patient dose management needs to be consistent with the widely accepted linear no-threshold model of stochastic radiation effects. This essay reviews the attributes and limitations of dose monitoring technologies to provoke discussion regarding resource allocation in the current fiscally constrained health care system.
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Affiliation(s)
- Thorarin A Bjarnason
- Diagnostic Imaging Services, Interior Health, Kelowna, British Columbia, Canada; Department of Radiology, University of British Columbia, Vancouver, British Columbia, Canada; Department of Mathematics, Statistics, Physics & Computer Science, University of British Columbia Okanagan, Kelowna, British Columbia, Canada.
| | - Yogesh Thakur
- Department of Radiology, University of British Columbia, Vancouver, British Columbia, Canada; Integrated Medical Imaging, Vancouver Coastal Health Authority, Vancouver, British Columbia, Canada
| | - Santanu Chakraborty
- Department of Radiology, University of Ottawa, Ottawa, Ontario, Canada; Department of Diagnostic Imaging, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Peter Liu
- KMH HealthCare Centres, Mississauga, Ontario, Canada
| | - Martin E O'Malley
- Joint Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada; Princess Margaret Hospital, Toronto, Ontario, Canada
| | - Richard Coulden
- Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada
| | - Michelle Noga
- Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada
| | - Andrew Mason
- Medical Imaging Department, Ridge Meadows Hospital, Maple Ridge, British Columbia, Canada
| | - John Mayo
- Department of Radiology, University of British Columbia, Vancouver, British Columbia, Canada; Integrated Medical Imaging, Vancouver Coastal Health Authority, Vancouver, British Columbia, Canada
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18
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Kang IS, Kim KJ, Kim Y, Park SH. The diagnostic utility of chest computed tomography scoring for the assessment of amiodarone-induced pulmonary toxicity. Korean J Intern Med 2014; 29:746-53. [PMID: 25378973 PMCID: PMC4219964 DOI: 10.3904/kjim.2014.29.6.746] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/11/2013] [Accepted: 01/06/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND/AIMS Amiodarone is one of the most widely used antiarrhythmic agents; however, amiodarone-induced pulmonary toxicity (APT) can be irreversible and sometimes fatal. The aim of this study was to evaluate the feasibility of chest computed tomography (CT) as a diagnostic tool for APT and to assess the utility of the CT APT score as an index for predicting the severity of APT. METHODS Patients underwent amiodarone treatment for various reasons, most often atrial fibrillation, for more than 2 years, and those that received a cumulative dose > 100 g were enrolled. A total of 34 patients who underwent chest CT between December 2011 and June 2012 were enrolled, whether or not they had clinical symptoms. The APT CT score was defined as the number of involved regions in the lung, which was divided into 18 regions (right and left, upper, middle, and lower, and central, middle, and peripheral). The CT findings were evaluated according to the total dose and duration of amiodarone treatment and the results of a pulmonary function test. Clinical symptoms and outcomes were also evaluated according to APT CT scores. RESULTS Seven patients had positive APT CT scores (interstitial fibrosis in five, organizing pneumonia in one, and mixed interstitial fibrosis and organizing pneumonia in one), and these patients exhibited significantly lower diffusion capacity for carbon monoxide in the lungs compared with patients without an increased APT CT score (70.2% ± 6.9% vs. 89.7% ± 19.4%; p = 0.011). Three of the seven patients experienced overt APT that required hospital admission. CONCLUSIONS Chest CT is a useful diagnostic tool for APT, and the APT CT score might be a useful index for assessing the severity of APT.
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Affiliation(s)
- In Sook Kang
- Division of Cardiology, Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Kyung Jin Kim
- Division of Cardiology, Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Yookyung Kim
- Department of Radiology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Seong-Hoon Park
- Division of Cardiology, Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
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Tharavichtikul E, Meungwong P, Chitapanarux T, Chakrabandhu S, Klunklin P, Onchan W, Wanwilairat S, Traisathit P, Galalae R, Chitapanarux I. The association of rectal equivalent dose in 2 Gy fractions (EQD2) to late rectal toxicity in locally advanced cervical cancer patients who were evaluated by rectosigmoidoscopy in Faculty of Medicine, Chiang Mai University. Radiat Oncol J 2014; 32:57-62. [PMID: 25061573 PMCID: PMC4104220 DOI: 10.3857/roj.2014.32.2.57] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/04/2014] [Accepted: 05/22/2014] [Indexed: 11/17/2022] Open
Abstract
Purpose To evaluate association between equivalent dose in 2 Gy (EQD2) to rectal point dose and gastrointestinal toxicity from whole pelvic radiotherapy (WPRT) and intracavitary brachytherapy (ICBT) in cervical cancer patients who were evaluated by rectosigmoidoscopy in Faculty of Medicine, Chiang Mai University. Materials and Methods Retrospective study was designed for the patients with locally advanced cervical cancer, treated by radical radiotherapy from 2004 to 2009 and were evaluated by rectosigmoidoscopy. The cumulative doses of WPRT and ICBT to the maximally rectal point were calculated to the EQD2 and evaluated the association of toxicities. Results Thirty-nine patients were evaluated for late rectal toxicity. The mean cumulative dose in term of EQD2 to rectum was 64.2 Gy. Grade 1 toxicities were the most common findings. According to endoscopic exam, the most common toxicities were congested mucosa (36 patients) and telangiectasia (32 patients). In evaluation between rectal dose in EQD2 and toxicities, no association of cumulative rectal dose to rectal toxicity, except the association of cumulative rectal dose in EQD2 >65 Gy to late effects of normal tissue (LENT-SOMA) scale ≥ grade 2 (p = 0.022; odds ratio, 5.312; 95% confidence interval, 1.269-22.244). Conclusion The cumulative rectal dose in EQD2 >65 Gy have association with ≥ grade 2 LENT-SOMA scale.
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Affiliation(s)
- Ekkasit Tharavichtikul
- Division of Therapeutic Radiology and Oncology, Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - Taned Chitapanarux
- Department of Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Somvilai Chakrabandhu
- Division of Therapeutic Radiology and Oncology, Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pitchayaponne Klunklin
- Division of Therapeutic Radiology and Oncology, Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Wimrak Onchan
- Division of Therapeutic Radiology and Oncology, Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Somsak Wanwilairat
- Division of Therapeutic Radiology and Oncology, Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Patrinee Traisathit
- Biostatistics and Applied Statistics Laboratory, Department of Statistics, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Razvan Galalae
- Faculty of Medicine, Christian-Albrechts University at Kiel, Kiel, Germany
| | - Imjai Chitapanarux
- Division of Therapeutic Radiology and Oncology, Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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Martinez NE, Johnson TE, Pinder JE. Influence of lake trophic structure on iodine-131 accumulation and subsequent cumulative radiation dose to trout thyroids. J Environ Radioact 2014; 131:62-71. [PMID: 24210373 DOI: 10.1016/j.jenvrad.2013.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Revised: 10/17/2013] [Accepted: 10/18/2013] [Indexed: 06/02/2023]
Abstract
Iodine-131 is a major component of the atmospheric releases following reactor accidents, and the passage of (131)I through food chains from grass to human thyroids has been extensively studied. By comparison, the fate and effects of (131)I deposition onto lakes and other aquatic systems have been less studied. In this study we: (1) reanalyze 1960s data from experimental releases of (131)I into two small lakes; (2) compare the effects of differences in lake trophic structures on the accumulation of (131)I by fish; (3) relate concentrations in fish and fish tissues to that in the water column using empirically estimated uptake (L kg(-1) d(-1)) and loss (d(-1)) parameters; and (4) show that the largest concentrations in the thyroids of trout (Oncorhynchus mykiss) may occur from 8 to 32 days after initial release. Iodine-131 concentration in trout thyroids at 30-days post release may be >1000 times that in the water. Estimates of cumulative radiation dose (mGy) to thyroids computed using an anatomically-appropriate model of trout thyroid structure within the Monte Carlo N-particle modeling software predicted cumulative thyroid doses that increased approximately linearly after the first 8 days and resulted in 32-day cumulative thyroid doses that ranged from 6 mGy g(-1) to 18 mGy g(-1) per 1 Bq mL(-1) of initial (131)I in the water depending upon fish size. The majority of this dose is due to beta emissions, and the dose varies with positions in the thyroid tissue.
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Affiliation(s)
- Nicole E Martinez
- Department of Environmental and Radiological Health Science, Colorado State University, 1618 Campus Delivery, Fort Collins, CO 80523, United States.
| | - Thomas E Johnson
- Department of Environmental and Radiological Health Science, Colorado State University, 1618 Campus Delivery, Fort Collins, CO 80523, United States.
| | - John E Pinder
- Department of Environmental and Radiological Health Science, Colorado State University, 305 W Magnolia # 231, Fort Collins, CO 80521, United States.
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Maraiki F, Aljubran A. Carotid and brachiocephalic arteries stenosis with long term use of sorafenib. Hematol Oncol Stem Cell Ther 2013; 7:53-5. [PMID: 23892125 DOI: 10.1016/j.hemonc.2013.06.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Revised: 06/18/2013] [Accepted: 06/30/2013] [Indexed: 11/18/2022] Open
Abstract
The risk associated with arterial thromboembolism (ATE) increases with the presence of anti-vascular endothelial growth factor (VEGF). We are reporting a case of transient ischemic attack (TIA) due to stenosis of the carotid and brachiocephalic arteries following long-term treatment with sorafenib for renal cell carcinoma (RCC). The patient is a non-smoker with no known comorbidities and had no history of cardiovascular disease. The patient underwent a right endarterectomy with angioplasty, aortic arch, and brachiocephalic artery angiogram with a stent placed in the brachiocephalic artery.
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Affiliation(s)
- Fatma Maraiki
- King Faisal Specialist Hospital & Research Centre, P.O. Box 3354, MBC11, Riyadh 11211, Saudi Arabia.
| | - Ali Aljubran
- King Faisal Specialist Hospital & Research Centre, P.O. Box 3354, MBC11, Riyadh 11211, Saudi Arabia
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Abstract
BACKGROUND Nephrotic syndrome in children usually has an onset between 2-8 years of age and steroids form the mainstay of management. Therapy may affect growth in children with relapsing nephrotic syndrome. This study was carried out to correlate growth with the cumulative dose of steroids in children with steroid sensitive nephrotic syndrome (SSNS). METHODS Data of 35 children with SSNS was analysed retrospectively. They were divided into two groups. Group I received prednisolone only and Group II received levamisole and or cyclophosphamide in addition to steroids. Their heights were recorded at the time of inclusion and again one year later. The SD scores for age were determined. Growth rate as a change in the SD score over one year (Δ SD score) was correlated to the cumulative dose of steroids over the same period using the Pearson's correlation. RESULT There were 24 (68.6 %) boys and 11 (31.4 %) girls (M:F ratio 2.18:1) in the age group of 17 months to 11 years at inclusion. Group I constituted 19 (54.2 %) and Group II, 16 (45.8 %). Pearson's correlation coefficients for all children, Groups I and II were -0.341, -0.441 and -0.255 respectively indicating "Fair correlation". This indicates that as the cumulative dose of steroid increases the growth retardation becomes more apparent. CONCLUSION Growth retardation is proportional to the cumulative dose of steroids in children with SSNS.
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Affiliation(s)
- K R Mohan
- Graded Specialist (Pediatrics), MH Allahabad, UP:-211001
| | - M Kanitkar
- Professor & Head (Department of Pediatrics), Armed Forces Medical College, Pune- 411040
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