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Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

5 clinical studies listed.

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Volunteers

Tundra lists 5 Volunteers clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT04040608

Influence of Screen Sizes on Responses to Visual Analog Scales of Stress

Visual analog scales (VAS) are one of the most common tools used in questionnaires. VAS are validated for pain and stress for example on a horizontal, non-calibrated line of 100 mm, ranging from very low (0) to very high (100). Nowadays, most VAS are used on questionnaires on internet. However, the influence of screen sizes on responses to visual analog scales were never studied.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-12

Volunteers
NOT YET RECRUITING

NCT07340957

Valid-B.Well BP25 Study

Prospective, single-center, single-arm, open, comparative, validation of a commercialized device, repeated measures accuracy study designed in accordance with the requirements of the ISO 81060-2:2018 AAMI/ESH/ISO Universal Standard for the clinical validation of automated non-invasive sphygmomanometers (Non-invasive sphygmomano-meters - Part 2: Clinical investigation of intermittent automated measurement, including Amendments 1 and 2)). The validation will be conducted with volunteers rather than necessarily with patients, and all measurements will be performed outside of the subjects' normal diagnosis or treatment.

Gender: All

Ages: 12 Years - Any

Updated: 2026-01-14

Volunteers
Study Focus: Blood Pressure Measures
RECRUITING

NCT07319039

Breathlessness Patterns in Patients With Cancer, COPD and Heart Failure: an fMRI Feasibility Study

Dyspnea that persists despite optimal pathophysiological treatment is defined as persistent dyspnea. Currently all brain functional magnetic resonance imaging (fMRI) studies conducted to evaluate breathlessness have done so using healthy volunteers or have concentrated on acute breathlessness. Little is known about chronic breathlessness patterns and their modulation by different triggers. Furthermore, it is currently assumed in the palliative care literature that patients suffering from different advanced and progressive diseases such as cancer, heart failure (HF) or chronic obstructive pulmonary disease (COPD) have the same triggers, perceptions and neurological pathways and thus require the same treatments/interventions (i.e. opioids as first line symptomatic pharmacologic treatment). However, it is now known that patients belonging to different disease groups do not necessarily benefit from opioids. Aim of the study To assess the feasibility of identifying dyspnea patterns in different life-limiting conditions and to evaluate the effect of immersive virtual reality (IVR) on dyspnea using patient-reported-outcomes (PROMs). Study procedure: Patients with advanced chronic diseases such as cancer, COPD or HF suffering from dyspnea will undergo a brain fMRI in combination with an IVR intervention. The fMRI data will be reviewed to identify different patterns of dyspnea and the effect of IVR on dyspnea will be assessed through PROMs. Patients will be asked about the perceived burden of the study.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-08

1 state

Chronic Obstructive Pulmonary Disease (COPD)
Heart Failure
Cancer
+1
ACTIVE NOT RECRUITING

NCT06824779

Impact of FLU Vaccination on Nasal Resident Memory Immune Responses and Peripheral Respiratory-tropic Memory Immune Responses

Mucosal sites, such as respiratory mucosa, are the primary entry points entry points for pathogens. However, clinical evaluation of vaccines against respiratory respiratory pathogens is currently based primarily on analysis of systemic, i.e. peripheral antibody and cellular responses. These measurements give little indication of the immune responses in respiratory tissues tissues, even though the latter are essential for protection against infection. Protective immune responses in mucous membranes, including respiratory including respiratory tissues, rely on secretory IgA to neutralize pathogens neutralization of pathogens on the mucosal surface, as well as the development of the development of cellular responses, notably those from T (Trm) and B (Brm) lymphocytes. Preclinical studies and a few human studies have demonstrated that Trm are a crucial element mucosal protection against viral and bacterial infections. In fact it has been shown that resident memory lymphocytes, including Trm, are able to able to reside in nasal, pulmonary, intestinal, genital and skin mucosa and skin after infection.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-30

Volunteers
Flu Vaccine
RECRUITING

NCT04256330

Cardiometabolic Health and Inflammatory Resolution

The aim of this study is to determine how inflammatory resolution impacts cardiometabolic health and disease in subjects that are either lean (18.5-24.9 kg/m2), overweight (25.0-29.9 kg/m2) or obese (\>30.0 kg/m2).

Gender: All

Ages: 18 Years - 65 Years

Updated: 2025-05-08

1 state

Volunteers