We investigated epidural measurement techniques and suggest that the necessary and sufficient criteria for accurate epidural measurement of ICP are adequate transducer size and stiffness, transducer-dura coplanarity, transducer-guard ring coplanarity, complete dural …

Epidural electric stimulation test (EEST), epidural pressure waveform analysis (EPWA), and ultrasound assessment of epidural injection (UAEI) will be discussed. Through a systematic review of the literature, we aim to summarize the current knowledge on the performance and interpretation of these tests.

2017年6月1日 · An epidural balloon consists of a small inflated balloon attached to an epidural needle. The negative pressure resulting from the tip of the needle entering the epidural space causes the balloon to collapse, thereby providing a visual indicator of LOR.

Object: Continuous intracranial pressure (ICP) monitoring using an epidural sensor is a common technique used in selected neurosurgical patients. The aim of this study was to assess the safety and accuracy of the Neurodur-P epidural sensor in the clinical setting.

2012年4月25日 · Therefore, we have developed a method that places an ICP catheter contiguous with the epidural space, but avoids the need to insert it between skull and brain. An optic fibre pressure catheter (420LP, SAMBA Sensors, Sweden) was used to measure ICP at the epidural location because the location of the pressure sensor (at the very tip of the ...

Transducing the pressure occurring in the epidural space produces a characteristic waveform, which reflects heart rate and peripheral pulse waves transmitted through the dura to the epidural space. 1,2 The occurrence of these pulsatile waveforms in synchrony with heart rate, obtained by transducing the epidural catheter, has been reported to be ...

2023年7月22日 · The Rotterdam Teletransducer (RTT) is a passively operated device for measung epidural pressure, designed to function over extended periods of time, using special techniques for sealing the Titanium pressure sensor to the radiolucent ceramic cap, which are critical in maintaining transducer stability.

Simultaneous measurements with the new transducer and a direct c.s.f. pressure transducer show that the c.s.f. pressure changes are correctly indicated by the new transducer. The literature pertaining to epidural-pressure measurement gives the impression that, with the use of coplanar transducers, errors due to dural bending are

2017年4月17日 · Waveform analysis is a method of transducing the pressure in the epidural space, which demonstrates beat-by-beat pressure waveforms (similar to invasive arterial pressure waveforms) from pulsations transmitted through the dura mater. These can be obtained by connecting a transducer to either the epidural needle or the catheter.

The procedure presented here enables a very sensitive and accurate recording of intracranial pressure. This minimally invasive technique avoids significant brain trauma by positioning the pressure sensor in the epidural space and not the brain tissue or ventricles.