An interventional study of Standardized office blood pressure measurements in Hypertension, sponsored by Centre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de Montreal. Not yet recruiting at 2 sites in 2 countries. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-10-29.
Sponsored by Centre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de Montreal · Not applicable, Interventional, and Diagnostic
The SCREENS-BP study is a randomized crossover study evaluating the effects of smartphone use and television viewing on blood pressure (BP) measurements in 96 adults.
Each participant will undergo four sets of automated BP measurements under standardized conditions. The first three sets will be performed in random order: without distractions, while actively using a smartphone, and while watching a standardized television video. A fourth set without distractions will be performed at the end. Each set will consist of a two-minute walk, five minutes of rest followed by three BP measurements taken at one-minute intervals, without staff present.
The primary outcome is the within-participant difference in systolic BP between each distraction condition and the reference BP, calculated from the mean of the two sets without distractions. Secondary outcomes include differences in diastolic BP and heart rate. Exploratory analyses will assess potential differences according to participant characteristics.
The findings will help determine whether common technological distractions influence BP measurement accuracy and inform recommendations for BP measurement in clinical, home, and research settings.
Accurate blood pressure (BP) measurement is essential for the diagnosis and management of hypertension. Current guidelines recommend standardized measurement conditions, including a period of rest and the avoidance of distractions. However, these conditions may not reflect routine clinical practice or home BP monitoring, where activities such as smartphone use or television viewing are common. The clinical impact of these technological distractions on BP measurements remains uncertain.
SCREENS-BP is a randomized crossover study designed to evaluate whether smartphone use and television viewing influence BP measurements obtained under otherwise standardized conditions. The study will recruit 96 adults aged 18 years or older.
Each participant will complete four sets of BP measurements on the non-dominant arm using a validated automated oscillometric device. Each set will include a five-minute rest period followed by three BP measurements taken at one-minute intervals, without staff present in the room. Before each set, participants will walk slowly for two minutes and then be positioned according to standardized BP measurement recommendations.
The first three measurement conditions will be performed in randomized order:
A fourth set of standardized BP measurements without distractions will be performed at the end of the protocol to account for within-participant BP variability and potential changes in BP over time.
The primary outcome will be the within-participant difference in mean systolic BP between each distraction condition and the reference BP, calculated as the average of the two standardized measurement sets. Secondary outcomes will include differences in diastolic BP and heart rate. Exploratory analyses will evaluate potential effect modification by sex, age, baseline BP, and antihypertensive medication use, as well as the robustness of the results across different statistical approaches.
By quantifying the impact of common technological distractions on BP measurements, SCREENS-BP aims to inform recommendations for BP measurement in clinical settings, at home, in pharmacies, and in research. The results may support stricter standardization of measurement conditions or provide evidence for more flexible protocols if no clinically meaningful differences are observed.
6,114 studies on the registry are indexed under Hypertension; 912 are open to participants now.
This study's planned enrollment of 96 is close to the median of 100 across 4,575 interventional studies indexed under Hypertension.
Browse Hypertension studies →Centre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de Montreal is the lead sponsor of 34 studies on the registry; 16 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
BP measured in an optimal environnement, without any distractions (first set)
Diagnostic Test: Standardized office blood pressure measurements
BP measured while being being distracted by smartphone browsing
Diagnostic Test: Standardized office blood pressure measurements
BP measured while being being distracted by television watching
Diagnostic Test: Standardized office blood pressure measurements
BP measured in an optimal environnement, without any distractions (second set)
Diagnostic Test: Standardized office blood pressure measurements
Standardized office blood pressure measurements
Mean difference in systolic BP - Phone distraction
Mean difference in systolic BP between BP measured during the Phone distraction and the mean of the two standardized AOBP measurement series (without any distraction)
Time frame: At enrollment (time 0)
Mean difference in systolic BP - Television distraction
Mean difference in systolic BP between BP measured during the Television distraction and the mean of the two standardized AOBP measurement series (without any distraction)
Time frame: At enrollment (time 0)
Mean difference in diastolic BP - Phone distraction
Mean difference in diastolic BP between BP measured during the Phone distraction and the mean of the two standardized AOBP measurement series (without any distraction)
Time frame: At enrollment (time 0)
Mean difference in diastolic BP - Television distraction
Mean difference in diastolic BP between BP measured during the Television distraction and the mean of the two standardized AOBP measurement series (without any distraction)
Time frame: At enrollment (time 0)
Mean difference in heart rate - Phone distraction
Mean difference in heart rate between BP measured during the Phone distraction and the mean of the two standardized AOBP measurement series (without any distraction)
Time frame: At enrollment (time 0)
Mean difference in heart rate - Television distraction
Mean difference in heart rate between BP measured during the Television distraction and the mean of the two standardized AOBP measurement series (without any distraction)
Time frame: At enrollment (time 0)
Subgroup analysis - sex
Subgroup analysis - sex
Time frame: At enrollment (time 0)
Subgroup analysis - Systolic BP above and below 130 mmHg
Subgroup analysis - Systolic BP above and below 130 mmHg
Time frame: At enrollment (time 0)
Subgroup analysis - Antihypertensive use
Subgroup analysis - Antihypertensive use
Time frame: At enrollment (time 0)
Subgroup analysis - Above and below median age
Subgroup analysis - Above and below median age
Time frame: At enrollment (time 0)
Subgroup analysis - Above and below median habitual screen time
Subgroup analysis - Above and below median habitual screen time
Time frame: At enrollment (time 0)
Plan to share: Yes — Available upon reasonnable request
No publications or documents are linked to this record.
Start is estimated for Nov 2026; primary completion for Nov 2028, 23 months later.
Of 1,403 non-industry interventional studies with no phase under Hypertension, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 41. This study's planned 23 months is close to that.
Counting every sponsor, half of 1,498 studies reached it within 23 months; a quarter within 10 and three quarters within 41.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Centre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de Montreal