Testing a smartphone fingertip video method to screen for high blood pressure
Compares smartphone fingertip video readings with a standard cuff in adults for blood pressure.
Plain-language title generated from the registry record
Registry title: Smartphone Blood Pressure Measurement to Screen for Hypertension
Key facts
- Where
- Lausanne, SwitzerlandSee the 2 sites
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 80 years old?
Source: NCT06577688, who can take part
Where in Switzerland
- University Hospital LausanneLausanne, SwitzerlandTaking people
- University Hospital Lausanne, CHUVLausanne, SwitzerlandTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Centre Hospitalier Universitaire Vaudois
- Trial code
- NCT06577688
- Record updated
- 27 March 2026
- Original description
The goal of this observational study is to assess the feasibility of classifying people whose blood pressures are within hypertensive range using a machine-learning approach based on features derived from smartphone video data recorded at the patient's fingertips. The main question[s] it aims to answer are:Read full original descriptionShow less
Assessing the Feasibility of Classifying People Using a Machine-learning Approached Based on Features Derived From Smartphone Video Data Recorded at the Person's Fingertip
The goal of this observational study is to assess the feasibility of classifying people whose blood pressures are within hypertensive range using a machine-learning approach based on features derived from smartphone video data recorded at the patient's fingertips. The main question[s] it aims to answer are:
Is a smartphone a reliable device for high blood pressure screening ? Is a smartphone a reliable device for blood pressure monitoring ? Participants will record their blood pressure with a smartphone at their fingertips and with an approved cuff device, 3 times in the morning and 3 times in the evening for 7 days. There will be two groups, a volunteer presumed healthy, and a volunteer addressed for a Home Blood pressure monitoring with the diagnosis of hypertension suspected.
Researchers will compare the two groups to see if the smartphone can be reliable in terms of diagnosis and monitoring of the blood pressure comparing to a standard cuff device.
Inclusion: Informed consent as documented by signature; Men or women older than 18 years old; Good understanding of written and oral speaking used at the center where the study will be carried out.
Exclusion: Known or suspected non-compliance (e.g. drug or alcohol abuse, language problems, psychological disorders, dementia); Known unstable cardiac condition (myocardial infarction < 1 week, decompensated heart failure, pulmonary embolism); Diabetes mellitus [15] [8]; Known (or assessed by recording heart rate and using pulse palpation, as recommended in ESC/ESH guidelines [1]) cardiac arrhythmia (atrial fibrillation, numerous extrasystoles and important bradycardia/bradyarrhythmia, bigeminy, trigeminy, isolated VPB) [4] [1] [7] [15] [17]; End-stage renal disease (GFR < 15/min/1.73m2 and/or dialysis) [4] [14] [15] [16]; Patients older than 80 years old [4] [13]; Patients that cannot sign informed consent; Patients in emergency situation, are not legally competent, cannot understand the situation or are vulnerable; Unable to participate due to pain or stress [12]; Known pregnancy; SBP or DBP difference between two arms >10 mmHg [8] [18]; Patient with finger lesions that would alter the correct capture of signals by the mobile phone; Known mobile phone contact dermatitis (caused by metal allergens, notably nickel and chromium; Incapacity of properly using the smartphone (i.e. incapacity of obtaining a recording with sufficient signal quality after the dedicated training).