PTT-Validations

Product catalog summary

Validation and Comparison of SOMNOtouch™ NIBP:
The SOMNOtouch™ NIBP device has been validated against several methods for measuring blood pressure (BP), including cuff-based methods during ergometry and over 24 hours, the Penaz method, and intra-arterial BP measurement. It is listed as a recommended device on the dabl® Educational Trust website.

Pulse Transit Time (PTT) Validations:
The device uses a patented Pulse Transit Time (PTT) technique, validated against other methods. The PTT method measures the time for a pulse wave to travel from the heart to the fingertip, allowing continuous, non-invasive BP monitoring.

Key Validation Studies:

ESH-IP 2010 Protocol: Validated with 33 patients across BP strata, fulfilling all requirements with strong correlations for both systolic (SBP) and diastolic blood pressure (DBP).
Comparison to Cuff-Based Method: In studies with healthy subjects and during exercise, PTT showed significant correlation with cuff-based methods.
24-Hour Ambulatory BP Measurement: Demonstrated reliability over 24 hours, with some measurements affected by artefacts like motoric activity and arrhythmia.
Children and Adolescents: In a study with 90 participants aged 5-17, PTT showed minimal deviation from cuff-based methods over 24 hours.
Apnea-Related BP Changes: PTT reliably detected BP changes related to apnea and hypopnea.
Intra-Arterial Measurement Comparison: PTT showed high correlation with intra-arterial measurements in both healthy subjects and cardiology patients.

Device Features:
The SOMNOtouch™ NIBP offers cuffless, continuous BP monitoring, reducing artefacts and improving patient adherence. It is designed for ease of use and reliability, suitable for long-term diagnostics in sleep medicine, cardiology, and neurology.

About SOMNOmedics:
SOMNOmedics specializes in diagnostic devices for sleep medicine, cardiology, and neurology, providing innovative and mobile solutions for patient health insights.

Catalog excerpts

PTT Validations (PULSE TRANSIT TIME) VALIDATION ACCORDING TO THE ESH-IP 2010 PROTOCOL AGAINST CUFF-BASED METHOD DURING ERGOMETRY AGAINST CUFF-BASED METHOD OVER 24 HOURS AGAINST THE PENAZ METHOD AGAINST INTRA-ARTERIAL BP MEASUREMENT SOMNOtouchTM NIBP is listed on the dabl®Educational Trust website as a recommended device http://www.dableducational.org/sphygmomanometers/devices_1_clinical.html#ClinTable

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(PULSE TRANSIT TIME) We have validated our patented1 PTT technique against other current methods as described below: Validation of the Somnotouch-NIBP noninvasive continuous blood pressure monitor according to the European Society of Hypertension International Protocol revision 2010. Bilo, G„ et al. (2015), Blood Press Monit, 20(5): p. 291 -4. ♦ 33 patients from low, medium and high BP strata as required by the ESH-IP ♦ All validation requirements of the ESH-IP were fulfilled: Table 1: Validation results (adapted from Bilo et al.) * two out of three required for the first threshold; three out...

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♦ After exclusion of values affected by artefacts: • SBP: 1.4 mmHg, + 18/- 15 mmHg; DBP: 0.3 mmHg, + 14/- 13 mmHg ♦ This study demonstrates that the PTT method is a reliable and favorable method for BP measurement over 24 hours. Accuracy of cuff-less, continuous, and non-invasive blood pressure measurement in 24-h ABPM in children aged 5-17. Bothe, T.L., et al. (2023), Blood Pressure, 32(1): p. 2255704. ♦ 90 children and adolescents included (5-17 years), PTT (SOMNOtouch™ NIBP) against cuff-based method, 24 hours ♦ Additionally recorded: 3-channel ECG, motoric activity, finger plethymogram, oxygen...

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Turning point in plethysmogram measurement allows us to `set` the software‘s algorithm – and measure blood pressure continuously throughout the day and night. Because every single pulse wave is detected, a continuous “Beat-to-Beat”-recording and analysis is possible. Reduce artefacts and increase the number of reliable data points – all in a continuous, non-invasive and non-reactive way. The SOMNOtouch™ NIBP (Non-Invasive Blood Pressure) is a new era in CUFFLESS ambulatory blood pressure monitoring (ABPM). About us SOMNOmedics designs, manufactures & distributes diagnostic devices that streamline...

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PTT-Validations

PTT-Validations

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