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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Physics
- نوع مقاله: Journal Article
- کلمات کلیدی: modeling,Radiation Therapy,Complications,Acute Esophagitis,Concurrent Chemotherapy
- چکیده:
- چکیده انگلیسی: Introduction: The current study aimed to compare the performance of radiobiological models in predicting acute esophagitis (AE) complications after three-dimensional conformal radiation therapy (3D-CRT).
Material and Methods: Out of a total of 100 patients, 50 patients with concurrent chemotherapy and 50 patients without such therapy were treated with different total doses and a daily dose range of 1.8-2.4 Gy on the basis of 5 days a week for 3 months. Predictions of AE were based on Lyman–Kutcher–Burman (LKB) and equivalent uniform dose (EUD)-based radiobiological models. Consequently, 3 months of follow-upwere performed to monitor the complication incidence among the studied patients. Receiver operating characteristic (ROC) and univariable logistic regression analyses were carried out to determine the effect of mean dose, volume percentage, and weight loss percentage on the probability of AE grade ³ 2.
Results: The EUD-basedmodel showed a better concordance with the clinical data for all patients (area under the curve [AUC]=0.919) and the concurrent chemoradiotherapy (CCRT) group (AUC=0.986). For the radiation therapy group, the LKB model had a better performance than the EUD-based model (AUC=0.921). Grade ³ 2 esophagitis occurred 37.94±4.0 and 68.39±7.1 days after the initiation of radiation therapy in the chemoradiation and radiation therapy groups, respectively.
Conclusion: The EUD-basedmodel showed a higher agreement with the follow-up data. The incidence time of grade ³ 2 AE in the CCRT was approximately two times shorter than that in the non-CCRT group.- انتشار مقاله: 30-02-1398
- نویسندگان: Mostafa Alizade-harakiyan,Amir Ghasemi Jangjoo,Behnam Nasiri,Tohid Jafari-Koshki,Murat Okutan,Asghar Mesbahi
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Pediatrics
- نوع مقاله: Journal Article
- کلمات کلیدی: children,Chronic immune thrombocytopenic purpura,intravenous immunoglobulin
- چکیده:
- چکیده انگلیسی: Background
This study aimed to evaluate the effectiveness of Intravenous immunoglobulin (IVIg) and combination of IVIg and Methylprednisolone for childhood Idiopathic (autoimmune) Thrombocytopenia (ITP) treatment; in addition investigate the related factors to develop chronic form of under 15 years ITP.
Materials and Methods
This retrospective study conducted on 88 ITP patients that treated with IVIg or combination of IVIg and Methylpredinosolon. Children were treated with IVIg 2 mg/kg/d or combination of IVIg 2 mg/kg/d and Methylpredinosolon20 mg/kg/dfor maximum 5 days. The numbers of patients with a platelet count > 50,000/μl, after treatment initiation, were the primary outcome. Odds Ratio (OR) as well as 95% Bayesian Credible interval (Crl), were estimated using a Bayesian Logistic regression model.
Results
The median age of subjects was 3.5+ 4.42 years (Interquartile: 2 8.5). About 13% of patients were discharged from hospitalization in day 2 and day 3. The ITP of 23% of children were progressed to chronic form. The following factors were significantly associated with the development of chronic ITP, combination of IVIg and Methylprednisolone [OR: 3.24, 95% Crl: [1.06 11.11]), and day 2 and 3 of discharge from hospitalization (OR: 7.72, 95% Crl: (1.14 67.16)].
Conclusion
The current results, suggest that the both IVIg and combination of IVIg are equally effective in providing a platelet level > 50,000/μl early. In addition patients how received combination drug were more likely to develop to chronic ITP. Therefore, we suggest that this route must be preferentially used in decision making for treatment childhood ITP.- انتشار مقاله: 04-03-1395
- نویسندگان: Seyed Kamal Eshagh-Hoseini,Shahram Arsang-Jang,Tohid Jafari-Koshki
- مشاهده