Hemodynamics, fluids & transfusion
A novel smartphone app for blood pressure measurement: a proof-of-concept study against an arterial catheter
Authors' conclusion
Its trending ability was investigated in highly dynamic conditions, demonstrating high concordance and accuracy.
Study context
- Population
- Patients requiring GA and invasive blood pressure (BP) monitoring, during induction of GA565 recordings from 109 analysed
- Participants
- 121 patients
- Comparison
- Smartphone app vs arterial catheter
- Outcome
- Agreement of app vs invasive BP
Methodological detailsproof-of-concept, 1152 recordings from 119 patients analysed; 2 subjects excluded and 565 recordings rejected (no app estimate)
- Proof-of-concept
- 1152 recordings from 119 patients analysed; 2 subjects excluded and 565 recordings rejected (no app estimate)
Main finding
As reported in the abstract
Bias ± SD
0.0 ± 7.5 mmHg
95% limits of agreement CI - 14.9, 14.8
SBP
Bias ± SD
0.1 ± 2.9 mmHg
95% limits of agreement CI - 5.5, 5.7
DBP
Bias ± SD
0.1 ± 4.2 mmHg
95% limits of agreement CI - 8.3, 8.4
MBP
- Concordance rate and angular concordance rate (CR) for SBP, DBP and MBP
- more than 90%
- Measurement pairs in no- or low-risk zones (error grid), SBP and MBP
- 98%
- Of these, in the no-risk zone
- more than 89%
- Acceptance rate
- 51.1%
Original publication
A novel smartphone app for blood pressure measurement: a proof-of-concept study against an arterial catheter. J Clin Monit Comput. Published 21 June 2022. doi:10.
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