I-WEAR: Evaluating Wearables and Health Summaries in ICU Survivors

NCT ID: NCT07035106

Last Updated: 2025-09-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-07-01

Study Completion Date

2026-05-30

Brief Summary

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This pilot study investigates the use of wearable health technology and bi-weekly digital health summaries in patients recovering from intensive care. Many patients experience physical, psychological, and cognitive challenges after an ICU stay, a condition known as Post-Intensive Care Syndrome (PICS). The study aims to evaluate the feasibility and usability of wearable devices-such as smartwatches, blood pressure monitors, and smart scales-for tracking recovery in real-world settings.

Participants will be randomly assigned to one of three groups: standard ICU follow-up care, wearable use only, or wearable use combined with bi-weekly health reports and optional lifestyle consultations. The study will assess participants' quality of life, experience using the technology, and adherence over a 6-month period. Results will inform the future use of digital tools in post-ICU care.

Detailed Description

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I-WEAR is a single-center, non-invasive, randomized feasibility study conducted at the Medical University of Vienna in collaboration with the Ludwig Boltzmann Institute for Digital Health and Patient Safety. The study targets ICU survivors aged 18-65 years with prior ICU stays of ≥48 hours and comorbid diabetes mellitus and/or cardiovascular disease. The goal is to evaluate the feasibility and usability of wearable technologies and digital health reporting to enhance longitudinal care after ICU discharge.

Participants (n=60) are randomized into three groups:

Control group: Standard ICU follow-up care Intervention group 1: Wearables and app (smartwatch, scale, blood pressure monitor) Intervention group 2: Same wearables plus automated bi-weekly health summaries and optional health consultations via Webex Wearable devices include the Garmin Vivosmart 5 (tracking HRV, sleep, stress, and activity), the Garmin Index S2 Smart Scale, and the Garmin Index BPM blood pressure monitor. Data is aggregated via the Fitrockr application and stored in an ISO/IEC 27001-certified cloud environment in compliance with the EU General Data Protection Regulation (GDPR). Participants retain full control over data sharing, and pseudonymized data will be used for research purposes only.

The primary outcomes are feasibility (recruitment, retention, device adherence), and usability (System Usability Scale, qualitative interviews). Secondary outcomes include health-related quality of life measured via SF-36 at enrollment, mid-study (month 3), and study completion (month 6). Descriptive statistics and visualizations will summarize adherence and change trajectories. The study follows CONSORT 2010 guidelines for feasibility studies and includes a decision framework to inform whether to proceed with a definitive trial.

Conditions

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Post-Intensive Care Syndrome (PICS) Critical Illness Recovery Coronary Artery Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participants are randomized 1:1:1 into standard care, wearable use only, or wearable use with digital health summaries and optional counseling. There is no crossover between groups.
Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

NONE

All participants and staff are aware of the assigned intervention.

Study Groups

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Standard care

Participants receive standard ICU follow-up care at the Medical University of Vienna without wearable devices or digital health tools.

Group Type NO_INTERVENTION

No interventions assigned to this group

Wearables Only

Participants receive wearable health monitoring devices (Garmin Vivosmart 5, Garmin Index S2 Smart Scale, Garmin Index BPM blood pressure monitor) and use the Fitrockr application to visualize and track their data. No counseling or bi-weekly summaries are provided.

Group Type EXPERIMENTAL

Wearable Health Monitoring

Intervention Type DEVICE

Participants receive a Garmin Vivosmart 5, Garmin Index S2 Smart Scale, and Garmin Index BPM blood pressure monitor for daily health tracking. Devices sync to the Fitrockr mobile application.

Wearables + Summary + Counseling

Participants receive the same wearable devices and Fitrockr app as the Wearables Only group. In addition, they receive bi-weekly automatically generated health summaries via email and have the option to book lifestyle consultations with a member of the study team via Webex.

Group Type EXPERIMENTAL

Wearable Health Monitoring

Intervention Type DEVICE

Participants receive a Garmin Vivosmart 5, Garmin Index S2 Smart Scale, and Garmin Index BPM blood pressure monitor for daily health tracking. Devices sync to the Fitrockr mobile application.

Digital Health Summary and Lifestyle Counseling

Intervention Type BEHAVIORAL

Participants receive bi-weekly health summaries via email generated from wearable data and may opt in to monthly video-based lifestyle consultations with trained study staff.

Interventions

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Wearable Health Monitoring

Participants receive a Garmin Vivosmart 5, Garmin Index S2 Smart Scale, and Garmin Index BPM blood pressure monitor for daily health tracking. Devices sync to the Fitrockr mobile application.

Intervention Type DEVICE

Digital Health Summary and Lifestyle Counseling

Participants receive bi-weekly health summaries via email generated from wearable data and may opt in to monthly video-based lifestyle consultations with trained study staff.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Age 18-65 years at the time of ICU admission
* ICU stay of at least 48 hours
* ICU discharge within the last 2 years
* Comorbidity of diabetes mellitus and/or chronic heart failure/coronary artery disease
* Written informed consent
* Access to a home internet connection and smartphone with internet and Bluetooth

Exclusion Criteria

* Presence of a legal guardian
* No smartphone or internet access
* No cardiovascular disease/event and/or diabetes
* Implanted pacemaker or defibrillator
* Allergies to materials in the wearable devices
* Transfer from an ICU outside the Medical University of Vienna
* Homelessness
* Residence outside of Austria
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Ludwig Boltzmann Gesellschaft

OTHER

Sponsor Role lead

Responsible Party

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Akos Tiboldi

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Harald Willschke, Ao. Univ. Prof. Dr.

Role: STUDY_DIRECTOR

Medical University of Vienna / Ludwig Boltzmann Institute for Digital Health and Patient Safety

Locations

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Ludwig Boltzmann Institute Digital Health and Patient Safety

Vienna, , Austria

Site Status RECRUITING

Countries

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Austria

Central Contacts

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Akos Tiboldi, Dr.med.univ.

Role: CONTACT

+43 660 7432550

Lisa Lichtenegger, BSc MSc

Role: CONTACT

References

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Pearson N, Naylor PJ, Ashe MC, Fernandez M, Yoong SL, Wolfenden L. Guidance for conducting feasibility and pilot studies for implementation trials. Pilot Feasibility Stud. 2020 Oct 31;6(1):167. doi: 10.1186/s40814-020-00634-w.

Reference Type BACKGROUND
PMID: 33292770 (View on PubMed)

Teresi JA, Yu X, Stewart AL, Hays RD. Guidelines for Designing and Evaluating Feasibility Pilot Studies. Med Care. 2022 Jan 1;60(1):95-103. doi: 10.1097/MLR.0000000000001664.

Reference Type BACKGROUND
PMID: 34812790 (View on PubMed)

Bowen DJ, Kreuter M, Spring B, Cofta-Woerpel L, Linnan L, Weiner D, Bakken S, Kaplan CP, Squiers L, Fabrizio C, Fernandez M. How we design feasibility studies. Am J Prev Med. 2009 May;36(5):452-7. doi: 10.1016/j.amepre.2009.02.002.

Reference Type BACKGROUND
PMID: 19362699 (View on PubMed)

Eldridge SM, Chan CL, Campbell MJ, Bond CM, Hopewell S, Thabane L, Lancaster GA; PAFS consensus group. CONSORT 2010 statement: extension to randomised pilot and feasibility trials. BMJ. 2016 Oct 24;355:i5239. doi: 10.1136/bmj.i5239.

Reference Type BACKGROUND
PMID: 27777223 (View on PubMed)

Tison GH, Sanchez JM, Ballinger B, Singh A, Olgin JE, Pletcher MJ, Vittinghoff E, Lee ES, Fan SM, Gladstone RA, Mikell C, Sohoni N, Hsieh J, Marcus GM. Passive Detection of Atrial Fibrillation Using a Commercially Available Smartwatch. JAMA Cardiol. 2018 May 1;3(5):409-416. doi: 10.1001/jamacardio.2018.0136.

Reference Type BACKGROUND
PMID: 29562087 (View on PubMed)

Bayoumy K, Gaber M, Elshafeey A, Mhaimeed O, Dineen EH, Marvel FA, Martin SS, Muse ED, Turakhia MP, Tarakji KG, Elshazly MB. Smart wearable devices in cardiovascular care: where we are and how to move forward. Nat Rev Cardiol. 2021 Aug;18(8):581-599. doi: 10.1038/s41569-021-00522-7. Epub 2021 Mar 4.

Reference Type BACKGROUND
PMID: 33664502 (View on PubMed)

Duggan MC, Wang L, Wilson JE, Dittus RS, Ely EW, Jackson JC. The relationship between executive dysfunction, depression, and mental health-related quality of life in survivors of critical illness: Results from the BRAIN-ICU investigation. J Crit Care. 2017 Feb;37:72-79. doi: 10.1016/j.jcrc.2016.08.023. Epub 2016 Aug 31.

Reference Type BACKGROUND
PMID: 27652496 (View on PubMed)

Desai SV, Law TJ, Needham DM. Long-term complications of critical care. Crit Care Med. 2011 Feb;39(2):371-9. doi: 10.1097/CCM.0b013e3181fd66e5.

Reference Type BACKGROUND
PMID: 20959786 (View on PubMed)

Jackson JC, Pandharipande PP, Girard TD, Brummel NE, Thompson JL, Hughes CG, Pun BT, Vasilevskis EE, Morandi A, Shintani AK, Hopkins RO, Bernard GR, Dittus RS, Ely EW; Bringing to light the Risk Factors And Incidence of Neuropsychological dysfunction in ICU survivors (BRAIN-ICU) study investigators. Depression, post-traumatic stress disorder, and functional disability in survivors of critical illness in the BRAIN-ICU study: a longitudinal cohort study. Lancet Respir Med. 2014 May;2(5):369-79. doi: 10.1016/S2213-2600(14)70051-7. Epub 2014 Apr 7.

Reference Type BACKGROUND
PMID: 24815803 (View on PubMed)

Ohtake PJ, Lee AC, Scott JC, Hinman RS, Ali NA, Hinkson CR, Needham DM, Shutter L, Smith-Gabai H, Spires MC, Thiele A, Wiencek C, Smith JM. Physical Impairments Associated With Post-Intensive Care Syndrome: Systematic Review Based on the World Health Organization's International Classification of Functioning, Disability and Health Framework. Phys Ther. 2018 Aug 1;98(8):631-645. doi: 10.1093/ptj/pzy059.

Reference Type BACKGROUND
PMID: 29961847 (View on PubMed)

Needham DM, Davidson J, Cohen H, Hopkins RO, Weinert C, Wunsch H, Zawistowski C, Bemis-Dougherty A, Berney SC, Bienvenu OJ, Brady SL, Brodsky MB, Denehy L, Elliott D, Flatley C, Harabin AL, Jones C, Louis D, Meltzer W, Muldoon SR, Palmer JB, Perme C, Robinson M, Schmidt DM, Scruth E, Spill GR, Storey CP, Render M, Votto J, Harvey MA. Improving long-term outcomes after discharge from intensive care unit: report from a stakeholders' conference. Crit Care Med. 2012 Feb;40(2):502-9. doi: 10.1097/CCM.0b013e318232da75.

Reference Type BACKGROUND
PMID: 21946660 (View on PubMed)

Mikkelsen ME, Still M, Anderson BJ, Bienvenu OJ, Brodsky MB, Brummel N, Butcher B, Clay AS, Felt H, Ferrante LE, Haines KJ, Harhay MO, Hope AA, Hopkins RO, Hosey M, Hough CTL, Jackson JC, Johnson A, Khan B, Lone NI, MacTavish P, McPeake J, Montgomery-Yates A, Needham DM, Netzer G, Schorr C, Skidmore B, Stollings JL, Umberger R, Andrews A, Iwashyna TJ, Sevin CM. Society of Critical Care Medicine's International Consensus Conference on Prediction and Identification of Long-Term Impairments After Critical Illness. Crit Care Med. 2020 Nov;48(11):1670-1679. doi: 10.1097/CCM.0000000000004586.

Reference Type BACKGROUND
PMID: 32947467 (View on PubMed)

Related Links

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https://interreg-danube.eu/projects/digi4care

Official study project page of the DIGI4Care - Transforming patient journeys through digital innovation in healthcare across the Danube Region

https://dhps.lbg.ac.at/forschung/digital-tools/digi4care/?lang=en

Official study project page from the Ludwig Boltzmann Institute for Digital Health and Patient Safety

Other Identifiers

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DRP0200543

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

I-WEAR-PICS-1303-2025

Identifier Type: -

Identifier Source: org_study_id

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