Glaucoma is one of the leading causes of irreversible blindness and is characterised by progressive loss of retinal ganglion cells. While therapies to lower intraocular pressure slow the progression of the disease in most patients, a significant subset still shows progression despite treatment. Transcorneal electrical stimulation (TES) may potentially activate neuroprotective pathways and slow the progression of visual field defects. The OkuStim 2 System is a medical device for TES which was originally developed for the treatment of retinitis pigmentosa and similar retinal dystrophies and shall now be tested for the treatment of glaucoma. Stimulation of the diseased retina with weak currents can activate signalling pathways and the release of substances that have a protective effect on the retinal cells. This neuroprotective effect might preserve physiological functions of the retina for longer and slow down its gradual degeneration. Long-term use is required to maintain this effect. The TES-GPS study is investigating the safety and efficacy of TES in open-angle glaucoma.

TES-GPS (short title for glaucoma pilot study) is a prospective, randomised, double-blind, sham-controlled, single-centre pilot study at the University Medical Center Mainz. 50 patients with progressive visual field loss due to open-angle glaucoma will be randomised 1:1 to receive either TES with the OkuStim 2 System or sham stimulation. The primary endpoint is the change in visual field sensitivity (Humphrey mean deviation) after 18 months. Secondary endpoints include changes in visual acuity, intraocular pressure, optical coherence tomography (OCT) parameters and quality of life (National Eye Institute Visual Function Questionnaire 25, NEI-VFQ 25). The intervention consists of weekly 30 min TES sessions, which are conducted in the patient’s home after initial training in the clinic. The study comprises up to 13 scheduled visits over 18 months.

The study is conducted in accordance with ISO14155, Medical Device Regulation (EU) 2017/745, International Council for Harmonisation Good Clinical Practice and the Declaration of Helsinki. Approval was obtained from the Ethics Committee of the Landesaerztekammer Rheinland-Pfalz in Mainz and from Bundesinstitut fuer Arzneimittel und Medizinprodukte. Results will be published in peer-reviewed journals and presented at scientific conferences.

NCT06682962.

Administering supplemental oxygen to prevent hypoxaemia is a fundamental treatment for patients hospitalised with acute injury or illness. However, the amount of oxygen administered frequently exceeds that needed to maintain normoxaemia, causing patients to experience hyperoxaemia and wasting supplemental oxygen. Closed-loop, autonomous oxygen titration systems are designed to optimise oxygen delivery by administering the lowest possible oxygen flow that maintains peripheral oxygen saturation (SpO₂) within a predefined range. For adults hospitalised with an acute injury or illness, it remains uncertain whether the use of a closed-loop, autonomous oxygen titration system safely increases the proportion of time spent in normoxaemia (SpO₂ 90%–96%) compared with usual care.

The Strategy to Avoid Excessive Oxygen using Autonomous Oxygen Titration Intervention trial is a multicentre, unblinded, parallel-group, randomised trial being conducted at four level 1 trauma centres in the USA. The trial compares an autonomous oxygen titration system versus usual care among 300 adults hospitalised for major trauma, burn, acute care surgery or acute respiratory illness. The primary outcome is the proportion of patient-time spent within the targeted normoxaemia range (SpO₂ 90%–96%) as measured by continuous non-invasive pulse oximetry, during the first 72 hours after randomisation. Secondary outcomes include the amount of supplemental oxygen administered and the proportion of time spent in hypoxaemia (SpO₂2 >96%). Specifying the protocol and statistical analysis plan before the conclusion of enrolment increases the rigour, reproducibility and interpretability of the trial. Enrolment began on 6 May 2024.

The trial protocol was approved by the single institutional review board at the University of Colorado School of Medicine and the Office of Human Research Oversight at the Department of Defense. We will present the results at scientific conferences and submit them for publication in a peer-reviewed journal.

NCT06374225.

Health literacy (HL) is essential for making informed health-related decisions, for example enabling parents to reduce their child’s allergy risk. Health literacy does not, however, rely solely on an individual’s capacities, but is strongly influenced by external factors. Midwives provide important health advice to families, particularly since their relationship is close during a time of significant transition. This offers them a unique opportunity to positively influence the HL of parents, which in turn may support the health and well-being of the whole family. The aim of this study is to develop and evaluate an intervention that can support midwives in providing allergy prevention advice in a way that is in line with the concept of HL.

In accordance with the recommendations of the Medical Research Council framework in the first phase of this study, we will survey midwives (target sample size=379) in Germany regarding their practices, the potential barriers they face and enabling factors in providing advice on early childhood allergy prevention in an HL-responsive way. The data will be subjected to descriptive statistical analysis. Two co-design workshops will then be conducted with various stakeholders in two regions (Rhineland-Palatinate and Saxony) of Germany. Following the protocol proposed by the Stanford Design Thinking School, we will use design thinking to collect ideas for the intervention. Based on these ideas and our previous qualitative and quantitative study, we will develop an intervention in collaboration with didactic experts. The intervention will be piloted in three groups (midwives=10–15, midwives working as practice supervisors=5–10, students of midwifery=10–20). For the process evaluation, we will use observation protocols of the intervention conduct and qualitative interviews. For the outcome evaluation, we will use a questionnaire and observations in simulation laboratories with students of midwifery.

This study protocol was approved by the Ethics Committee of the University of Regensburg (ID 23-3441-101) and is in compliance with the Declaration of Helsinki. Participation in the study will only be possible after informed consent has been given. Our results will be presented at national and international conferences and published in scientific journals. Additionally, once it has been finalised, we will make the intervention available to educational institutions for (future) midwives.