iPhone App Compared to Standard Riva-Rocci (RR)-Measurement During Stress Testing

iPhone App Compared to Standard RR-measurement During Stress Testing

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02860533

Acronym

iPARRDeltaBP

Enrollment

220

Registered

2016-08-09

Start date

2016-09-01

Completion date

2017-02-01

Last updated

2019-05-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Blood Pressure

Keywords

Blood pressure, smartphone App, Hypertension, Stress testing, Prevention, Cardiovascular risk factors

Brief summary

The iPARR DELTA BP Study is designed to evaluate whether a new smartphone app using the photoplethysmography signal of the inbuilt camera can measure blood pressure (BP) fluctuations with sufficient correlation compared to the goldstandard oscillometric BP measurements. Investigators will recruit patients who are scheduled for a routine treadmill stress test and assess their blood pressure before and right after the test with the smartphone app and the standard BP measurements on the opposite upper extremity. Pronounced BP fluctuations are encountered during vigorous activities. The primary endpoint of the iPARR DELTA BP Study is the correlation of the absolute difference of subsequent measurements between both techniques. If the relative chances of BP fluctuations are sufficiently assessed with this new device, BP fluctuations could be monitored continuously after calibration.

Interventions

DEVICEcuff device

Measurement of blood pressure during stress testing with cuff device

DEVICEiphone

Measurement of blood pressure during stress testing with iPhone

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

DIAGNOSTIC

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to 99 Years

Healthy volunteers

Yes

Inclusion criteria

\- able to give informed consent

Exclusion criteria

* atrial fibrillation * medical reasons why blood pressure measurement is not possible at the upper extremity (Shunt, Lymphedema)

Design outcomes

Primary

Measure	Time frame	Description
Absolute difference between conventional blood pressure measurements and the corresponding iPhone blood pressure estimations	1 day	Difference between the delta of two sequential oscillometric measurements and the delta of the two corresponding blood pressure estimates calculated from the PPG signal of an iPhone 4S

Secondary

Measure	Time frame	Description
Number of measurement failures	1 day	Number of measurements that cannot be analyzed due to bad signal quality of the Photoplethysmography (PPG) signal

Countries

Switzerland

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026