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Inter-Observer Variability of a Commercial Patient Positioning and Verification System in Proton Therapy

Published on: 6th February, 2017

OCLC Number/Unique Identifier: 7286354964

Purpose:Accurate patient positioning is crucial in radiation therapy. To fully benefit from the preciseness of proton therapy, image guided patient positioning and verification system is typically utilized in proton therapy. The purpose of this study is to evaluate the inter-observer variability of image alignment using a commercially available patient positioning and verification system in proton therapy. Methods:The VeriSuite patient positioning and verification system (MedCom GmbH, Darmstadt, Germany) provides a six degrees of freedom correction vector by registering two orthogonal x-ray images to digitally reconstructed radiograph (DRR) images that are rendered in real time from the planning computed tomography (CT) images. Six cases of various disease sites, including brain, head & neck, lung, prostate, pelvis, and bladder, were used in this study. For each case, the planning CT images and a daily orthogonal x-ray portal image pair were loaded into the VeriSuite system. The same set of x-ray images and CT images for each case were reviewed and aligned separately by each of the 10 radiation therapist, following the clinical procedure for the corresponding disease site. The resulting correction vectors were then recorded and analyzed. Results:Our study shows that the inter-observer variation (One standard deviation) in image alignment using the VeriSuite system ranged from 1.2 to 2.0 mm for translational correction and from 0.6 to 1.3 degrees for rotational correction for the six cases. The use of fiducial markers for prostate patient alignment achieved the least inter-observer variation while the bladder case produced the largest. Conclusions:Inter-observer variation in image alignment could be relatively large, depending on the complexity of patient anatomy, image alignment approach, and user experience and software limitations. Automatic registration and fiducial markers could potentially be used to align patient more accurately and consistently. To ensure adequate tumor coverage in proton therapy, inter-observer variability in patient alignment should be carefully evaluated and accounted for in patient setup uncertainty analysis and treatment planning margin determination.
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Palliative care approach to oncological patient – Main points

Published on: 31st March, 2020

OCLC Number/Unique Identifier: 8566861688

According to the World Health Organization definition, palliative care is an approach aimed at increasing the quality of life of patients and their relatives by addressing physical, psychosocial and spiritual needs and treating conditions early, such as pain while they are coming to terms with a life-threatening disease [1]. Palliative care services have started a rapid progress in developed countries such as Scandinavian countries, England and Canada since the beginning of 1990 [2]. Although palliative care cares for any patient who is in need of care, whether bed-bound or unable to look after themselves, one of the main area of interest is of course oncological patients and their relatives. Patients with advanced cancer, frequent sufferings from physical and psychological symptoms - primarily pain, reduced functional capacity, and reduced quality of life are in the scope of palliative care protocol [3]. The most common end-of-life symptoms and signs in palliative cancer patients are pain, anorexia, nausea, cachexia, weakness, dyspnea, ascites, anxiety, agitation, delirium, confusion and pressure sores. In order to achieve quality and continuous care in case management, a family doctor, specific branch specialist, nurse, dietician, psychologist, cleric, etc. should work together in a multidisciplinary approach and clinical guidelines and care protocols should be implemented [4]. However, it should be kept in mind that increasing the medication dose may not always be beneficial to the oncological patients in palliative services. The goal should always be maximum benefit with minimal tests and treatment. Palliative care does not aim to accelerate or postpone death; but it has many benefits in cancer patients and their relatives including the integration of the psychosocial and spiritual aspects of patient care into physical care, providing support for patients to live as active as possible until the last moment, improving the quality of life and the disease process, providing help and support in the grieving process [1,5]. Providing good care to advanced cancer patients requires that caregivers are educated and supported about their patients’ physical, psychological and social care needs. Balancing the physical and emotional needs of the caregivers will reduce the stress they experience, as well as increase the quality of life of their patients [6,7]. Professionalism in palliative care comes into play right at this point. There is no consensus in the medical world about by whom, when and to whom palliative care should be given. In this regard, the conflicts of opinion between specific branches such as anesthesia, internal medicine and neurology are inevitable. We think that the team leader should be a family physician or a palliative care specialist. The reason for this is the family medicine’s principles of core competencies including biopsycosocial, holistic, comprehensive approach and equal distance to specific branches. Of course when the palliative care specialist is the team leader the patient’s own family doctor still provides invaluable service because of his intimate and long-term knowledge about the patients. One key difference in some countries is that no distinction is being made between palliative and hospice care. Neither the insurance companies nor the state demands such classification because it doesn’t serve any practical purpose at the moment. However, in due time such distinction will be inevitable as one of the cost-cutting measure. Medical oncology will have to report about the expected survival of the cancer patients and it will further increase their workload given the exponential increase in cancer cases.
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Effects of Zinc Supplementation on Oxidative Stress in Patients Undergoing Maintenance Hemodialysis

Published on: 20th October, 2023

Introduction: The aim of this study was to examine the effects of Zn supplementation on oxidative stress by evaluating changes in serum Copper (Cu) to Zinc (Zn) ratio, homocysteine (hCys), Glutathione (GSH), Total Bilirubin (TB) and Catalase (CAT) activity in hemodialysis patients.Methods: Seventy-seven HD patients were enrolled in a multicenter simple-blind randomized clinical trial. Only 37 HD patients completed the study. They were randomly divided into two groups and supplemented with zinc sulfate (n = 17) or placebo (n = 20) for two months. Serum Zn and Cu were measured by atomic absorption spectrophotometry. Serum hCys was measured by immunology method, serum GSH and CAT activity were assessed by spectrophotometry method and TB was measured by colorimetric method. Determinations were performed before and after supplementation.Findings: After zinc supplementation, serum Zn, serum GSH, and Serum Total Bilirubin (STB) significantly increased. Serum Cu to Zn ratio, serum hCys, and CAT activity significantly decreased in the Zn Zn-supplemented group.Conclusion: Zinc supplementation increased serum antioxidant factors such as Zn, GSH, and bilirubin and decreased serum oxidative factors such as copper to zinc ratio, hCys, and decreased CAT activity. The study results suggest that zinc supplementation may be a useful tool for the improvement of oxidative stress in HD patients.
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Dalbavancin and moleculight in the COVID-19 pandemic

Published on: 11th April, 2023

The COVID-19 Pandemic, which began in March 2020, and its associated surges, had an immense impact on our medical staff and their ability to perform their daily duties.The COVID-19 Pandemic necessitated hospital modifications, including the expansion of the Emergency Department, ICU, and Isolation units. The overwhelmed staff and overburdened ER and ICU required adjustments to deal with the Inpatient impasse. For example, temporary patient care rooms needed to be set up for the overflow of patients. The tsunami of the Pandemic almost overwhelmed our hospital.With the challenges presented to our hospital during the Pandemic, we needed a fresh perspective to our multi-disciplinary approach. Thus, we fathomed that the use and cost-effectiveness of both Dalbavancin, a long-acting lipoglycopeptide antibiotic combined with the diagnostic Moleculight Imaging Device would be a sound decision.We hypothesized that with the use of this cost-effective antibiotic in conjunction with the use of the Moleculight Imaging Device, with its fluorescent imaging, we could detect the presence of bacteria and assist our wound treatment and decision-making.A shift in patients from the Emergency Room/Inpatient Department to the Outpatient Department/Wound Care Center was made possible with the use of these two novel products.
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3D software reconstruction for planning robotic assisted radical nephrectomy with level III caval thrombus

Published on: 30th April, 2020

OCLC Number/Unique Identifier: 8861737634

Inferior vena cava (IVC) involvement by intraluminal extension of tumor is infrequent, occuring in 4% to 10% of patients with renal cell carcinoma (RCC) [1-5]. Based on the cephalic extension of the thrombus, Mayo [6] described a classification of inferior vena cava thrombi in 4 categories, which has implications on surgical complexity, estimated blood loss (EBL) and peri-operative complications, but not cancer-specific survival [2,7]. Level III IVC thrombus is classified as being located in the retro-hepatic IVC below the diaphragm. Total resection of this tumor is the best chance of cure when no distant metastases are present [4,8]. Actually, open radical nephrectomy with concomitant thrombectomy is still the standard treatment. This procedure is technically challenging and involves a large incision and prolonged convalescence [9]. Recently, the feasibility of robotic IVC thrombectomy has been demonstrated, with potential lower EBL and shorter hospitalization and convalescence [7,10-14]. This surgery requires thorough knowledge of surgical anatomy, detailed pre-operative preparation and meticulous robotic technique [7]. The key point in the surgical management is the correct assessment of the extension of the endocaval thrombus, what is mainly based on radiological examinations [8]. Although Ultrasonography (US) and computerized tomography (CT) are useful in demonstrating the extent of the thrombus, CT is not always accurate in delineating the superior margin of the tumor in the IVC. More precisely, magnetic resonance imaging (MRI) can demonstrate a tumor thrombus and its extension, besides signs of wall invasion, being extremely useful to surgical procedure planning [8,15]. Vena cavography is not additive to US, CT, and MRI, and it increases the risk of contrast-associated renal injury [4,8]. However, new modern image technologies has emerged to help surgical planning, as three-dimensional visualization technique (3DVT) based on routine CT or MRI processed image data [16-20]. Recently, a comparative study showed advantage of 3DVT in management of complex renal tumor during laparoscopic partial nephrectomy [20]. This modality is able to demonstrate anatomy relations, allowing the surgeon to observe the relationship between targeted tumor and peripheral structure before surgery and perform virtual manipulation. This kind of preoperative accurate assessment can enhance surgeons confidence of surgical procedure and decrease surgical risk and incidence of complications [20]. There is no report in the literature of the use of this type of technology in cases of IVC tumor thrombus. We present the use of 3D holographic interactive reconstruction in a single case of robotic radical nephrectomy with level III IVC thrombectomy.
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Vaginal embryonal rhabdomyosarcoma in young woman: A case report and literature review

Published on: 25th May, 2020

OCLC Number/Unique Identifier: 8605988997

Rhabdomyosarcomas are the most common soft tissue tumors of childhood. They are characterized by their poor prognosis. Vaginal location is very rare after puberty and exceptional in the post menopause. Treatment is based on several therapeutic measures combining neoadjuvant chemotherapy followed by surgery and/or external beam radiation therapy. We report herein the case of a 25 years-old woman, presented with vaginal embryonal RMS revealed by metrorrhagia and pelvic pain. The diagnosis was confirmed by biopsy and histopathological study. Pre-treatment workup was negative for metastatic disease. She has received chemotherapy based on vincristine, doxorubicin, and cyclophosphamide. The clinical evolution was marked by improvement of symptoms, unfortunately the patient died following febrile neutropenia after the third cycle of chemotherapy.
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Clinical presentation, diagnosis and therapeutic management of Dipylidium caninum (Cestoda: Dilepididae) infection in a domestic cat (Felis catus): a case report

Published on: 15th November, 2021

OCLC Number/Unique Identifier: 9341176181

Background: Dipylidium caninum, a zoonotic cyclophyllidean tapeworm, mainly infects dogs, cats, and occasionally humans as well. Here, we present D. caninum infection in a domestic cat. A cat of about one year of age with a history of intermittent diarrhea and shedding stool containing whitish cooked rice like soft particles. Methods: The case was identified by thorough clinical, coprological, and parasitological examinations, and treated accordingly.Results: During the physical examination, the cat was found to be infested with flea, and coprological investigation revealed the presence of gravid segments of cestodes. By preparing a permanent slide, we conducted a microscopic examination, and the cestode was confirmed as D. caninum. The cat was treated with albendazole and levamisole, which were ineffective; additionally, levamisole showed toxicity. Then, we administered niclosamide which completely cured the animal. On re-examination after a week, feces were found negative for eggs/gravid segments of any cestode. Conclusion: Niclosamide was found effective against dipylidiasis and can be treated similar infections in pets.
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Systemic sclerosis sine scleroderma presenting as renal crisis, a case report and review of the literature

Published on: 17th April, 2023

Systemic sclerosis sine scleroderma is a rare subset of systemic sclerosis with isolated organ involvement. Scleroderma renal crisis is a severe manifestation of systemic sclerosis characterized by malignant hypertension, oligo/anuric renal failure, and thrombotic microangiopathy. We present a case of a 55-year-old male with uncontrolled hypertension who presented with hematospermia and was found to have acute renal failure, microangiopathic hemolytic anemia, concerning thrombotic microangiopathy. Empiric management for thrombotic thrombocytopenic purpura (TTP) with plasma exchange and corticosteroids yielded a paradoxical response, ultimately leading to the diagnosis of systemic sclerosis sine scleroderma presenting as scleroderma renal crisis (SRC) after serological confirmation. Given the morbidity and mortality associated with scleroderma renal crisis, it should be increasingly considered as a differential for thrombotic microangiopathy even without outward manifestations of systemic sclerosis. Additionally, the empiric management of TTP can include the use of corticosteroids which can exacerbate SRC, an early clinical clue in the diagnosis of this disease.
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Does change in cervical dilation after anesthesia impact latency after cerclage placement?

Published on: 24th April, 2023

Background: Pregnant individuals with early cervical dilation have a high risk for preterm birth. The authors encountered cases where cervical dilation increased after anesthesia administration for a cerclage. Objective: The primary objective was to assess if a change in cervical dilation after anesthesia administration for a cerclage was associated with a shorter latency to delivery. Study design: This was a retrospective chart review of pregnancies from January 1, 2011, to December 31, 2021, who had a cerclage and delivered at our institution. Maternal demographics, obstetrical history, operative details, and delivery information were collected. Multi-fetal gestations, un-indicated cerclages, and abdominal cerclages were excluded. The primary outcome was the difference in cervical dilation between the office and the operating room after spinal anesthesia administration. A multivariable regression was performed. Results: A total of 183 pregnancies were included. The mean gestational age at cerclage placement was 18 weeks (STDEV 3.6). Twenty-nine percent of patients (53/183) were more dilated in the operating room compared to the office The latency between cerclage and delivery was not different if there was a cervical change between these settings (p = 0.655). There was an increased risk for preterm delivery with dilation in the office (OR 1.01, CI 1.01 to 2.5), but not with dilation in the operating room (OR 1.4, CI 0.9 to 2.0). Conclusion: Cervical dilation between the office and the operating room is different. Pregnancies with more dilation delivered at earlier gestations. However, a change in dilation between the office and the operating room was not associated with a shorter latency. 
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The Lived Experiences of Addiction Counselors and Applications for Building Resiliency

Published on: 27th November, 2024

As addiction counselors suffer from Burnout (BO) and Compassion Fatigue (CF), turnover rates increase and subsequently, there are fewer addiction counselors available to provide care for those experiencing addiction. A qualitative transcendental phenomenological study was conducted to interview addiction counselors believed to be resilient to BO and CF. All nine participants held the Master Addiction Counselor (MAC) certification awarded by the National Certification Commission for Addiction Professionals (NCC AP) and worked in addiction counseling for five years minimum. Previous studies show only 58% of addiction counselors remain in the field for five or more years and 29% maintain their current job for 5 or more years (therefore resiliency in this sample was inferred). Identified themes relating to resiliency factors were gleaned and implications were explored.
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