Influence des performances biomécaniques des capteurs de pression artérielle sanglante non réutilisables sur la fiabilité des mesures

Arterial blood pressure is a basic physiological parameter routinely measured to assess haemodynamic status. This measurement is widely performed by the means of disposable catheter transducer systems. These systems have biomechanical characteristics that are likely to alter the response to a complex, periodical signal as the arterial blood pressure signal. The alteration of the obtained response leads to a distortion of the signal which is usually an overestimation. This article analyses, the viscoelastic properties which are to be considered, how to measure these properties to allow users to make their choice when acquiring these devices in order to minimize measurement errors due to these characteristics.