Addition of prophylactic compression garments to standard care to prevent irreversible lower limb lymphoedema after gynaeco-oncological therapy (Gynolymph): protocol for a randomised controlled trial embedded within an observation cohort study

Introduction
In female patients diagnosed with gynaecological cancer, the main priority is treating cancer itself. However, a significant number of these patients develop lower limb lymphoedema (LLL), with its incidence strongly influenced by the diagnostic cut-off (a difference in leg circumference between both legs of 5% or 10%). LLL significantly impacts patients’ quality of life (QoL) due to functional impairment, the daily time investment required for treatment, financial costs and affected body image. Additionally, it increases the risk of cellulitis, often leading to hospitalisation for intravenous antibiotics. Timely recognition and acknowledgement of symptoms are crucial first steps in improving the QoL for these women. LLL is a common and irreversible complication following treatment for gynaecological cancer. Despite its clinical significance, there are limited prospective studies investigating LLL incidence, risk factors, early detection and clinical course in this patient population. Therefore, the objective of this observational cohort study is to investigate the incidence rate of stage 0–1 or stage 2–3 LLL based on the International Society of Lymphology criteria in the first 2 years after gynaecological cancer treatment. The embedded randomised control study (RCT) examines the added value of prophylactic compression garments (class II) to standard care in preventing irreversible lymphoedema after gynaeco-oncological therapy.

Methods and analysis
In June 2022, two university hospitals in Belgium initiated a multicentre observational cohort study, which also includes an embedded RCT. The study aims to enrol 400 patients before they begin cancer treatment or within 14 days of starting chemotherapy, radiotherapy or surgery. This cohort will be followed for up to 2 years. The embedded RCT will focus on patients who develop clinical lymphoedema stage 0–1 within the first 12 months following their initial cancer treatment. A total of 196 patients will be randomised into two groups: the intervention group (98 patients), receiving usual care plus prophylactic compression garments (compression class 2 (CCL2): 23–32 mm Hg), and the control group (98 patients), receiving only usual care. The RCT aims to assess the impact of adding prophylactic compression garments to standard care on further deterioration. Assessments will be conducted at baseline, and at 3, 12 and 24 months after initial cancer treatment. An additional assessment (T-visit) will be provided if there is a transition to LLL stage 0–1 or from stage 0–1 to stage 2–3 LLL, based on follow-up findings or patient initiative, using the predictive value of a validated self-report lower extremity questionnaire. This questionnaire is part of a lymph diary app provided to all patients. The primary outcome of the observational study is to determine the incidence rate of stage 0–1 or stage 2–3 LLL in the first 2 years after gynaecological cancer treatment. The primary outcome of the RCT is to evaluate the effect of wearing CCL2 preventive garments to avoid progression to higher-stage lymphoedema in patients who develop LLL within 1 year of treatment. Key secondary outcomes of the observational study include the timing of the development of LLL, risk factors for developing LLL and the impact of LLL on QoL and sexuality, as well as the evaluation of screening and diagnostic tools. The secondary outcomes of the RCT include tolerance and compliance with wearing the preventive compressive garments, the impact of the garments on limb volume and the patient’s time and financial investment.

Ethics and dissemination
The study was approved by the Ethics Committee of the two academic hospitals: the University Hospital of Ghent in September 2021 and the University Hospital of Leuven in December 2021. Approval has been granted for the study protocol, informed consent forms and other related documents by the main Ethics Committee of Ghent (BC-09915) and the local Ethics Committee of Leuven (S65724). All patients will provide written informed consent before participating in the trial. The results will be shared through peer-reviewed journals and presentations.

Trial registration number
NCT05469945.

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Novembre 2024

Safety and efficacy of personalised versus standard dosing of linezolid in patients with sepsis (SePkLin): a pragmatic, multicentre, randomised, controlled and superiority clinical trial protocol

Introduction
Linezolid is a broadly used antibiotic to treat complicated infections caused by gram-positive bacteria. Therapeutic drug monitoring of linezolid concentrations is recommended to maximise its efficacy and safety, mainly haematological toxicity. Different pharmacokinetic/pharmacodynamic targets have been proposed to improve linezolid exposure: the ratio of the area under the concentration–time curve during a 24-hour period to minimum inhibitory concentration (MIC) between 80 and 120; percentage of time that the drug concentration remains above the MIC during a dosing interval greater than 85% and the trough concentration between 2 and 7 mg/L. This clinical trial aims to evaluate the safety, efficacy and the clinical and economic utility of personalised dosing of linezolid using Bayesian forecasting methods to attain pharmacokinetic/pharmacodynamic targets, known as model-informed precision dosing.

Methods and analysis
This is a pragmatic, multicentre, randomised, parallel, controlled, phase IV and low intervention trial. Participants will be randomly assigned 1:1 to each group (n=346 per group). Control group will receive the standard dose of linezolid. Intervention group will receive personalised dosage of linezolid based on pharmacokinetic–pharmacodynamic adjustments. The primary outcome will be the incidence of thrombocytopenia in both groups.

Ethics and dissemination
This protocol was approved by the Ethical Committee of the Investigation with Medicines of Galicia (code 2022/140) and authorised by the Spanish Agency for Medicines and Medical Devices. The trial is implemented in accordance with the Declaration of Helsinki and the international ethical and scientific quality standard, the Good Clinical Practice. The results will be published in peer-reviewed journals.

Trial registration number
EudraCT registration code: 2022-000144-30.

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Ottobre 2024

Effect of high-flow nasal cannula oxygen versus standard oxygen on mortality in patients with acute hypoxaemic respiratory failure: protocol for a multicentre, randomised controlled trial (SOHO)

Introduction
First-line oxygenation strategy in patients with acute hypoxaemic respiratory failure consists in standard oxygen or high-flow nasal oxygen therapy. Clinical practice guidelines suggest the use of high-flow nasal oxygen rather than standard oxygen. However, findings remain contradictory with a low level of certainty. We hypothesise that compared with standard oxygen, high-flow nasal oxygen may reduce mortality in patients with acute hypoxaemic respiratory failure.

Method and analysis
The Standard Oxygen versus High-flow nasal Oxygen-trial is an investigator-initiated, multicentre, open-label, randomised controlled trial comparing high-flow nasal oxygen versus standard oxygen in patients admitted to an intensive care unit (ICU) for acute respiratory failure with moderate-to-severe hypoxaemia. 1110 patients will be randomly assigned to one of the two groups with a ratio of 1:1. The primary outcome is the number of patients who died 28 days after randomisation. Secondary outcomes include comfort, dyspnoea and oxygenation 1 hour after treatment initiation, the number of patients intubated at day 28, mortality in ICU, in hospital and until day 90, and complications during ICU stay.

Ethics and dissemination
The study has been approved by the central Ethics Committee ‘Sud Méditerranée III’ (2020-07-05) and patients will be included after informed consent. The results will be submitted for publication in peer-reviewed journals.

Trial registration number
NCT04468126.

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Ottobre 2024