Key result
A wearable watch-type BP monitor detected absolute systolic BP levels induced by emotional stress similarly to an ambulatory BP monitor (141.1 vs 140.3 mm Hg; P=0.724).
Why the study?
Psychological stress contributes to BP variability, an independent risk factor for cardiovascular events, but the effectiveness of wearable watch-type BP monitoring versus ABPM for detecting stress-induced BP elevation required evaluation.
Does a wearable watch-type BP monitoring device accurately detect stress-induced blood pressure elevation compared to standard ambulatory BP monitoring in outpatients with cardiovascular risk factors?
Observational (n=50)
Does a wearable watch-type BP monitoring device accurately detect stress-induced blood pressure elevation compared to standard ambulatory BP monitoring in outpatients with cardiovascular risk factors?
Absolute Event Rate: 141.1% vs 140.3%
p-value: p=0.724
Self-measurement using a wearable watch-type device can detect blood pressure variability induced by emotional stress under ambulatory conditions as accurately as standard ABPM.
May support WBPM for convenient stress-related BP assessment; leaves open equivalence to ABPM in larger studies.
BACKGROUND: Psychological stress contributes to blood pressure (BP) variability, which is a significant and independent risk factor for cardiovascular events. We compared the effectiveness of a recently developed wearable watch-type BP monitoring (WBPM) device and an ambulatory BP monitoring (ABPM) device for detecting ambulatory stress-induced BP elevation in 50 outpatients with 1 or more cardiovascular risk factors. METHODS: The WBPM and ABPM were both worn on the subject's nondominant arm. ABPM was measured automatically at 30-minute intervals, and each ABPM measurement was followed by a self-measured WBPM measurement. We also collected self-reported information about situational conditions, including the emotional state of subjects at the time of each BP measurement. We analyzed 642 paired BP readings for which the self-reported emotional state in the corresponding diary entry was happy, calm, anxious, or tense. RESULTS: In a mixed-effect analysis, there were significant differences between the BP values measured during negative (anxious, tense) and positive (happy, calm) emotions in both the WBPM (systolic BP [SBP]: 9.3 ± 2.1 mm Hg, P < 0.001; diastolic BP [DBP]: 8.4 ± 1.4 mm Hg, P < 0.001) and ABPM (SBP: 10.7 ± 2.1 mm Hg, P < 0.001; DBP: 5.6 ± 1.4 mm Hg, P < 0.001). The absolute BP levels induced by emotional stress self-measured by the WBPM were similar to those automeasured by the ABPM (SBP, WBPM: 141.1 ± 2.7 mm Hg; ABPM: 140.3 ± 2.7 mm Hg; P = 0.724). The subject's location at the BP measurement was also significantly associated with BP elevation. CONCLUSIONS: The self-measurement by the WBPM could detect BP variability induced by multiple factors, including emotional stress, under ambulatory conditions as accurately as ABPM.
No takes yet. Share an insight, caveat, or question.
Tomitani et al. (2020) conducted an observational in Cardiovascular risk factors (n=50). Wearable watch-type BP monitoring (WBPM) vs. Ambulatory BP monitoring (ABPM) was evaluated on Absolute systolic BP levels induced by emotional stress (p=0.724). A wearable watch-type BP monitor detected absolute systolic BP levels induced by emotional stress similarly to an ambulatory BP monitor (141.1 vs 140.3 mm Hg; P=0.724).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: