Abstract
Objectives: We aimed to validate the accuracy of blood pressure (BP) measurement using a smartwatch in patients with Parkinson's disease (PD).Materials and Methods: We compared 168 pairs of BP (n = 56) measurements acquired by a smartwatch (SM-R850) with those measured by a sphygmomanometer (reference device).Results: Differences between the smartwatch BP and reference BP measurements were compared. The mean and standard deviation of the differences systolic BP (SBP) and diastolic BP (DBP), measured by smartwatch and reference device, fulfilled both criterion 1 (0.4 ± 4.6 and 1.1 ± 4.5 mm Hg for DBP and SBP, respectively) and criterion 2 (0.2 ± 2.5 and 0.9 ± 2.4 mm Hg for DBP and SBP, respectively) of the BP validation criterion of the International Organization for Standardization.Conclusion: BP measurement using a smartwatch with a photoplethysmography sensor is an accurate and reliable method in patients with PD.
Highlights
Autonomic dysfunction is highly prevalent in patients with Parkinson’s disease (PD) [1]
Sixty-two participants were screened, and six of them were excluded for the following reasons: two because of arrhythmia, one with a difference in blood pressure (BP) > 10 mm Hg between the two arms, and three were not included in the final analysis because they failed to obtain three pairs of BP measurements using the test device because of resting tremor
We obtained a total of 168 pairs of measurements of the smartwatch and reference systolic BP (SBP) and diastolic BP (DBP)
Summary
Autonomic dysfunction is highly prevalent in patients with Parkinson’s disease (PD) [1]. A study reported that 32% of patients with PD had orthostatic hypotension (OH), which is associated with a poorer prognosis, cognitive decline, and a higher risk of falls, and it is an essential non-motor symptom to distinguish PD from multiple system atrophy [2, 3]. Detection and management of these blood pressure (BP) fluctuations may help to reduce cardiovascular risk and the risk of falls, and improve the quality of life of patients with PD [5]. Regular and repetitive measurement of the BP to detect fluctuations in BP is crucial for the management and diagnosis of PD [3, 6]. The measurement of the BP with a smartwatch facilitates BP monitoring in patients anytime and anywhere; patients with PD have been excluded from validation studies because they were believed to be subjects not suitable for the validation of BP
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