Publications by authors named "Tanya Holt"

Article Synopsis
  • The study aimed to determine how well Ga-labelled PSMA PET metrics can predict long-term biochemical failure-free survival (BFFS) after treatment for prostate cancer.
  • A prospective analysis included 183 men who underwent PSMA PET for newly diagnosed prostate cancer before receiving treatments like radiotherapy or radical prostatectomy.
  • Results showed that a higher PSMA SUV in the prostate is linked to a lower BFFS, indicating that even low-risk individuals with high PSMA SUV may face significant risks of biochemical failure.
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Introduction: Palliative radiotherapy (PRT) is frequently used to treat symptoms of advanced cancer, however benefits are questionable when life expectancy is limited. The 30-day mortality rate after PRT is a potential quality indicator, and results from a recent meta-analysis suggest a benchmark of 16% as an upper limit. In this population-based study from Queensland, Australia, we examined 30-day mortality rates following PRT and factors associated with decreased life expectancy.

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Introduction: This study aimed to investigate the patterns of practices of radiation oncologists (ROs) and urologists in Australia and New Zealand with respect to the utilisation of post-prostatectomy radiation therapy (RT) and help guide the development of an update to the existing Faculty of Radiation Oncology Genito-Urinary Group post-prostatectomy guidelines.

Methods: ROs and urologists with subspecialty practice in prostate cancer from Australia and New Zealand were invited to participate in an online survey comprised of clinical scenarios regarding post-prostatectomy RT.

Results: Sixty-five ROs and 28 urologists responded to the survey.

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Background: The COVID-19 pandemic overwhelmed Canadian hospitals with adult admissions. A large number of adult patients required critical care therapies, placing significant strain on hospital resources. In order to decompress adult intensive care units, pediatric intensive care units (PICUs) introduced adapted models of traditional care to lessen these burdens.

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Objective: Severity of illness scoring during pediatric critical care transport may provide objective data to determine illness trajectory and disposition and contribute to quality assurance data for pediatric transport programs. The objective of this study was to ascertain the breadth of severity of illness scoring tool application among North American pediatric critical care transport teams.

Methods: A cross-sectional quantitative survey using REDCap was distributed to 137 North American pediatric transport programs.

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Background: Metastatic spinal cord compression (MSCC) carries a poor prognosis and management is based on the likelihood of maintaining mobility and predicted survival.

Patients And Method: SCORAD is a randomised trial of 686 patients comparing a single dose of 8 Gy radiotherapy with 20 Gy in 5 fractions. Data was split into a training set (412, 60%) and a validation set (274, 40%).

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Background: The expected 30-day mortality rate for patients treated with palliative radiationisnotestablished. The primary objective of this study is todefinetheproportion of patientswith advanced cancerwho diewithin 30-daysofpalliative radiotherapy(PR). Additionally, we explored the short term survival of patient subgroups undergoing PR treatment.

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Article Synopsis
  • * This study analyzed 82 patients who underwent CRRT over 13 years, finding a 79% survival rate, with factors like sepsis and timing of CRRT initiation influencing mortality risks.
  • * The findings suggest that even smaller centers can successfully implement CRRT programs, leading to positive outcomes in quality indicators related to treatment efficiency and safety.
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Introduction: A recent survey found that Rapid Access Palliative Radiation Therapy (RAPRT) clinics have not been widely embraced in Australia and New Zealand for many reasons. The purpose of this narrative is to describe the transition of a Brisbane, Queensland, RAPRT clinic to an Advanced Practice Radiation Therapist (APRT) model to further improve access and delivery of palliative radiation therapy at that centre.

Methods: The weekly RAPRT clinic commenced in 2005, run by one Radiation Oncologist (RO).

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Introduction: Contemporary methods of external beam radiotherapy for prostate cancer have reduced toxicity rates through beam modulation and image guidance, however, rectal injury has not been eliminated completely in this population. For patients at greatest risk of developing rectal toxicities, hydrogel spacers are a viable option for risk reduction. Translation of clinical trial results into routine clinical practice relies on an understanding of the economic implications.

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Purpose: First developed in Canada in the 1990s, Rapid Access Palliative Radiation Therapy (RAPRT) clinics have subsequently spread internationally to expedite treatment for near end-of-life patients, sparing them the need for multiple visits to the department. A "classical" RAPRT clinic is herein defined as "a dedicated clinic specifically established to enable (ideally) same day consultation, planning for, and delivery of palliative radiation treatment." The aim of this work was to determine the current status of these clinics in Australia and New Zealand (ANZ).

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Acute medical management of traumatic brain injury (TBI) can be challenging outside of the resuscitation bay, specifically while obtaining a computed tomography (CT) scan of the brain. We sought out to determine the management practices of Canadian traumatologists for pediatric patients with severe TBI requiring CT in the emergency department (ED). In 2019, surveys were sent to trauma directors in hospitals across Canada to ascertain their clinical practices.

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Survival prediction for palliative cancer patients by physicians is often optimistic. Patients with a very short life expectancy (<4 weeks) may not benefit from radiation therapy (RT), as the time to maximal symptom relief after treatment can take 4-6 weeks. We aimed to identify a prognostic tool (or tools) to predict survival of less than 4 weeks and less than 3 months in patients with advanced cancer to guide the choice of radiation dose and fractionation.

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Objective: Timely detection of elevated intracranial pressure (ICP) in highrisk preterm infants may be critical to avoid permanent neurologic sequelae. Size of optic nerve sheath diameter (ONSD) is highly correlated with changes in ICP. Normal ultrasonographic ONSD values for preterm infants have been published.

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Article Synopsis
  • Pediatric patients with complex chronic conditions face challenges in intensive care, including longer stays and complex medical needs, necessitating a study to understand health care providers' perspectives.* -
  • A mixed-methods study in a pediatric ICU revealed common themes among providers, highlighting the need for better education, designated care leaders, and improved communication with families.* -
  • Key opportunities for enhancing care include setting clear goals, coordinating discharge plans more effectively, and involving families in the care process to improve patient outcomes.*
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Objectives: The objective of this study was to evaluate serial Transport Risk Assessment in Pediatrics (TRAP) scoring during pediatric critical care transport as a potential measure for specialized pediatric transport teams (PTTs).

Methods: This was a retrospective study with a provincial PTT from a tertiary hospital pediatric intensive care unit. All acutely ill children who were transported by the PTT between 2018 and 2019 were included in the study.

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Background: To characterize pediatric patients supported with continuous positive airway pressure and bilevel positive airway pressure (CPAP/BiPAP) or high-flow nasal cannula (HFNC) during interfacility transport (IFT).

Methods: A retrospective study with a provincial pediatric transport team from a tertiary hospital pediatric intensive care unit. Pediatric patients aged 28 days to < 17 years, who required IFT between January 2017 and December 2018, were identified through a transport registry and were included in the study.

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Purpose: Limiting the dose to the rectum can be one of the most challenging aspects of creating a dosimetric external beam radiation therapy (EBRT) plan for prostate cancer treatment. Rectal sparing devices such as hydrogel spacers offer the prospect of increased space between the prostate and rectum, causing reduced rectal dose and potentially reduced injury. This study sought to help identify patients at higher risk of developing rectal injury based on estimated rectal dosimetry compliance prior to the EBRT simulation and planning procedure.

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The diagnosis of brain death (BD) is legally and medically accepted. Recently, several high-profile cases have led to discussions regarding the integrity of current criteria, and many physiologic problems have been identified to support the necessity for their reevaluation. These include a global variability of the criteria, the suggestion of a clinical "hierarchy," and the resultant approximation of BD.

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Importance: Malignant spinal canal compression, a major complication of metastatic cancer, is managed with radiotherapy to maintain mobility and relieve pain, although there is no standard radiotherapy regimen.

Objective: To evaluate whether single-fraction radiotherapy is noninferior to 5 fractions of radiotherapy.

Design, Setting, And Participants: Multicenter noninferiority randomized clinical trial conducted in 42 UK and 5 Australian radiotherapy centers.

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Titrating ventilator settings to minimize pulmonary arterial pressures and optimize both ventilation and oxygen delivery can be challenging following cardiac arrest. Erroneous ventilator adjustments can lead to unnecessary strain on the right ventricle that may be particularly vulnerable during the acute recovery. We report a child with fulminant myocarditis who was mechanically ventilated using thoracic electrical impedance tomography to optimize regional lung inflation and possibly curtail right ventricular afterload following cardiac arrest.

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Introduction: Stereotactic body radiotherapy (SBRT) is a non-invasive alternative to surgery for the treatment of non-metastatic prostate cancer (PC). The objectives of the Novel Integration of ew prostate radiation schedules with adJuvant Androgen deprivation (NINJA) clinical trial are to compare two emerging SBRT regimens for efficacy with technical substudies focussing on MRI only planning and the use of knowledge-based planning (KBP) to assess radiotherapy plan quality.

Methods And Analysis: Eligible patients must have biopsy-proven unfavourable intermediate or favourable high-risk PC, have an Eastern Collaborative Oncology Group (ECOG) performance status 0-1 and provide written informed consent.

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The management of node-positive prostate cancer is highly variable, with both locoregional and systemic treatment options available. With the increasing use of novel imaging techniques such as PSMA-PET and MRI, combined with the increasing use of surgery for high-risk prostate cancer, clinical and pathological regional nodal disease is being detected at a higher rate and at an earlier stage than previously. This creates a window for a potentially curative management approach.

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