Key result
V-CHEK cuffless monitor closely tracks mercury sphygmomanometry with ~0.4 mmHg resting BP bias.
Why the study?
Does the V-CHEK cuffless blood pressure monitor provide accurate blood pressure, heart rate, and oxygen saturation measurements compared to a mercury sphygmomanometer and pulse oximeter in resting patients with cardiovascular diseases?
Cross-Sectional (n=250)
No
Does the V-CHEK cuffless blood pressure monitor provide accurate blood pressure, heart rate, and oxygen saturation measurements compared to a mercury sphygmomanometer and pulse oximeter in resting patients with cardiovascular diseases?
Mean Difference: -0.377 (95% CI -0.758–0.004)
The V-CHEK cuffless device demonstrates strong agreement with traditional mercury sphygmomanometry and pulse oximetry for resting blood pressure, heart rate, and SpO₂ measurements in patients with cardiovascular diseases.
Supports cuffless resting BP assessment; leaves open performance during activity and in diverse populations.
Background: Conventional blood pressure (BP) measurement devices using inflatable cuffs offer limited snapshots of BP profiles. Cuffless BP technologies enable continuous monitoring, potentially revolutionizing hypertension management by providing comprehensive daily data. Objective: To compare the accuracy of a commercially available cuffless BP monitor (V-CHEK device) against a mercury sphygmomanometer and pulse oximeter for measuring BP, heart rate, and oxygen saturation (SpO₂) in resting conditions. Methods: In this cross-sectional study at Sri Jayadeva Institute of Cardiovascular Sciences and Research, 250 patients underwent daytime BP, heart rate, and SpO₂ measurements using both the V-CHEK device and a mercury sphygmomanometer/pulse oximeter. Statistical analysis included Bland-Altman agreement assessment with 95% confidence intervals (CIs). Results: BP: No significant difference between devices; bias: −0.377 mmHg (95% CI: −0.758 to 0.004) Heart rate: Bias: −0.078 bpm (95% CI: −0.253 to 0.098). SpO₂: Marginal bias: 0.173% (95% CI: −0.23 to −0.103). All parameters showed strong agreement, with SpO₂ demonstrating slightly lower concordance. Conclusion: The V-CHEK cuffless device provides BP, heart rate, and SpO₂ measurements comparable to traditional sphygmomanometry in resting conditions, supporting its potential for clinical and ambulatory use.
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Patil et al. (2026) conducted a cross-sectional in Cardiovascular diseases / hypertension (n=250). V-CHEK cuffless blood pressure monitor vs. Mercury sphygmomanometer and pulse oximeter was evaluated on Accuracy and Bland-Altman agreement for blood pressure, heart rate, and oxygen saturation (SpO2) in resting conditions (MD -0.377 mmHg, 95% CI -0.758 to 0.004). The V-CHEK cuffless device showed strong agreement with mercury sphygmomanometry for resting BP (bias -0.377 mmHg; 95% CI -0.758 to 0.004), heart rate, and SpO2.
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