Collecting all available data (waveforms, beat to beat data, status data) generated by a non invasive blood pressure monitor on each hand and compare this to the actual data obtained by intra arterial (radial) monitoring. This to see if the non invasive bloodpressure monitor can be validated for intraoperative use.
Although a blood pressure monitoring device could be evaluated by the comparing systolic, diastolic and mean arterial pressure to a reference pressure, it is the specific aim to collect all available data (waveforms, beat to beat data, status data) generated by the blood pressure monitor. After data analysis and comparison to patient's actual intra-arterial waveform, the outcome will be evaluated by Association for the Advancement of Medical Instrumentation (AAMI) standards to see if the non invasive bloodpressure monitor can be validated for intraoperative use. The study is targeted at patients already monitored with a system that accurately measures and stores the intra-arterial waveform, such as the FloTrac system in the EV1000 monitor. This study is a substudy of a feasability protocol evaluating a new algorithm for the Clearsight system.
Study Type
OBSERVATIONAL
Enrollment
100
A cuff is placed on a finger of the patient. The ClearSight system uses a volume clamp technology allowing measuring of continuous blood pressure waveform. Note: There will only be observational recordings, no interventions
Academic Medical Center
Amsterdam, Netherlands
RECRUITINGvalidation systole, diastole, mean ABP and pulse pressure
accuracy and precision of invasive blood pressure curve vs non-invasive blood pressure curves(ipsilateral and contralateral)
Time frame: within 1 hour
implementation of software alterations to improve systole, diastole, mean ABP accuracy and pulse pressure
Comparison of the non-invasive blood pressure curve after software alterations to the reference and invasive arterial blood pressure curve
Time frame: time during surgery
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