Komorowski M.,European Astronaut Center |
Watkins S.D.,NASA |
Lebuffe G.,Claude Huriez University Hospital |
Clark J.B.,Baylor College of Medicine
Aviation Space and Environmental Medicine | Year: 2013
In spaceflight beyond low Earth ' s orbit, medical conditions requiring surgery are of a high level of concern because of their potential impact on crew health and mission success. Whereas surgical techniques have been thoroughly studied in spaceflight analogues, the research focusing on anesthesia is limited. To provide safe anesthesia during an exploration mission will be a highly challenging task. The research objective is thus to describe specific anesthesia procedures enabling treatment of pre-identified surgical conditions. Among the medical conditions considered by the NASA Human Research Program Exploration Medical Capability element, those potentially necessitating anesthesia techniques have been identified. The most appropriate procedure for each condition is thoroughly discussed. The substantial cost of training time necessary to implement regional anesthesia is pointed out. Within general anesthetics, ketamine combines the unique advantages of preservation of cardiovascular stability, the protective airway reflexes, and spontaneous ventilation. Ketamine side effects have for decades tempered enthusiasm for its use, but recent developments in mitigation means broadened its indications. The extensive experience gathered in remote environments, with minimal equipment and occasionally by insufficiently trained care providers, confirms its high degree of safety. Two ketamine-based anesthesia protocols are described with their corresponding indications. They have been designed taking into account the physiological changes occurring in microgravity and the specific constraints of exploration missions. This investigation could not only improve surgical care during long-duration spaceflights, but may find a number of terrestrial applications in isolated or austere environments. © by the Aerospace Medical Association, Alexandria, VA.
Ketterer N.,University of Lausanne |
Coiffier B.,University of Lyon |
Thieblemont C.,St Louis University Hospital |
Ferme C.,CNRS Gustave Roussy Institute |
And 16 more authors.
Annals of Oncology | Year: 2013
Background: The superiority of a chemotherapy with doxorubicin, cyclophosphamide, vindesine, bleomycin and prednisone (ACVBP) in comparison with cyclophosphamide, doxorubicin, vincristin and prednisone plus radiotherapy for young patients with localized diffuse large B-cell lymphoma (DLBCL) was previously demonstrated. We report the results of a trial which evaluates the role of rituximab combined with ACVBP (R-ACVBP) in these patients. Patients and methods: Untreated patients younger than 66 years with stage I or II DLBCL and no adverse prognostic factors of the age-adjusted International Prognostic Index were randomly assigned to receive three cycles of ACVBP plus sequential consolidation with or without the addition of four infusions of rituximab. Results: A total of 223 patients were randomly allocated to the study, 110 in the R-ACVBP group and 113 in the ACVBP group. After a median follow-up of 43 months, our 3-year estimate of event-free survival was 93 in the R-ACVBP group and 82 in the ACVBP group (P 0.0487). Three-year estimate of progression-free survival was increased in the R-ACVBP group (95 versus 83, P 0.0205). Overall survival did not differ between the two groups with a 3-year estimates of 98 and 97, respectively (P 0.686). Conclusion: In young patients with low-risk localized DLBCL, rituximab combined with three cycles of ACVBP plus consolidation is significantly superior to ACVBP plus consolidation alone. © The Author 2012. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved.
Prognostic impact of preoperative platelets to lymphocytes ratio (PLR) on survival for oesophageal and junctional carcinoma treated with neoadjuvant chemotherapy: A retrospective monocentric study on 153 patients
Messager M.,Royal Marsden Hospital |
Messager M.,Claude Huriez University Hospital |
Neofytou K.,Royal Marsden Hospital |
Chaudry M.A.,Royal Marsden Hospital |
Allum W.H.,Royal Marsden Hospital
European Journal of Surgical Oncology | Year: 2015
This study was designed to investigate the prognostic impact of elevated platelet to lymphocyte ratio (PLR) on survival for oesophageal and junctional adenocarcinoma (OJA) treated with neoadjuvant chemotherapy in a curative intent. From 2004 to 2014, 153 consecutive patients with OJA were included. PLR was measured at first diagnosis. Receiver Operating Characteristic curve analysis was performed to determinate PLR threshold. Cox multivariate model was used to assess correlation between PLR and survival. Cut-off value for PLR was 192, which identified 2 groups of patients: low (n = 122) and high PLR value (n = 31). Both groups were comparable by patient (age, sex, ASA score) and tumour characteristics (differentiation, TNM stage, location). Five year overall survival (OS) was 65%. OS and DFS were reduced in the high PLR group: p = 0.019 and p = 0.016, respectively. PLR was associated with increased recurrence (54.8% vs. 35.2%, p = 0.046) and cancer-related death (41.9% vs. 23.8%, p = 0.043) rates. On multivariate analysis, elevated PLR was associated with decreased DFS (HR = 2.85, 95%CI = 1.54-5.26, p = 0.001) and OS (HR = 2.47, 95%CI = 1.21-5.01, p = 0.012). This study demonstrates that elevated PLR is associated with poor OS and DFS for OJA treated with a curative intent and has the potential to be a useful prognostic biomarker for treatment planning. © 2015 Elsevier Ltd.
Markar S.R.,Imperial College London |
Mikhail S.,Imperial College London |
Mikhail S.,Cairo University |
Malietzis G.,Imperial College London |
And 4 more authors.
Annals of Surgery | Year: 2016
Objectives: The objectives of this systematic review and pooled analysis were to examine long-term survival, morbidity, and mortality following surgical resection of gastric cancer hepatic metastases and to identify prognostic factors that improve survival. Background: Patients with hepatic metastases from gastric cancer are traditionally treated with palliative chemotherapy. Methods: A systematic literature search was undertaken (1990 to 2015). Publications were included if they studied more than 10 patients undergoing hepatectomy for hepatic metastasis from gastric adenocarcinoma in the absence of peritoneal disease or other distant organ involvement. The primary outcome was the hazard ratio (HR) for overall survival. The influence of liver metastasis related factors; multiple vs single and metachronous vs synchronous upon survival was also assessed. Results: The median number of resections for the 39 studies included was 21 (range 10 to 64). Procedures were associated with a median 30-day morbidity of 24% (0% to 47%) and mortality of 0% (0% to 30%). The median 1-year, 3-year, and 5-year survival were 68%, 31%, and 27%, respectively. Survival was improved in Far Eastern compared with Western studies; 1-year (73% vs 59%), 3-year (34% vs 24.5%), and 5-year (27.3% vs 16.5%). Surgical resection of hepatic metastases was associated with a significantly improved overall survival (HR=0.50; P<0.001). Meta-analysis confirmed the additional survival benefit of solitary compared with multiple hepatic metastases (odds ratio=0.31; P=0.011). Conclusions: The observed improved survival rates following the resection of hepatic metastasis from gastric adenocarcinoma in selected patients merit a prospective study to formally address the survival benefits and the influence on quality of life of such approach. © 2015 Wolters Kluwer Health, Inc. All rights reserved.
Bouvet E.,Purpan University Hospital |
Borel C.,Purpan University Hospital |
Oberic L.,Purpan University Hospital |
Compaci G.,Purpan University Hospital |
And 4 more authors.
Haematologica | Year: 2013
Fludarabine-cyclophosphamide-rituximab is the most efficient first-line treatment for chronic lymphocytic leukemia patients. Many dose adjustments of the original MD Anderson Cancer Center regimen have been proposed. However, whether fludarabine-cyclophosphamide-rituximab relative dose intensity may have an impact on outcome has not yet been investigated. We retrospectively assessed relative dose intensity in 106 communitybased patients included in our regional healthcare network from 2004-11, all receiving fludarabine-cyclophosphamide- rituximab as first-line treatment outside clinical trials. Dose reductions were observed in 51.4% of patients, mainly decided by the individual physician and not based on recommendations (52.7%), while there were fewer reports of toxicity or dose reduction because of impaired renal function. Progression-free survival was significantly reduced in patients who had a reduction in dose intensity of more than 20% in fludarabinecyclophosphamide and/or rituximab. Multivariate analysis showed dose of rituximab had a significant impact on minimal residual disease and progression-free survival. Although prophylactic granulocyte-colony stimulating factor significantly reduced the rate of grade 3-4 neutropenia and febrile neutropenia, it had no impact on relative dose intensity and outcome. This study shows that, in routine clinical practice, there is low adherence to the original MD Anderson Cancer Center fludarabine-cyclophosphamide-rituximab schedule, and that the decision to modify dosage was mostly taken by the individual physician and was based on anticipated toxicity. This study shows that reduction of fludarabine-cyclophosphamide and, more importantly, of rituximab doses seriously interferes with progression-free survival. ©2013 Ferrata Storti Foundation.