Objectives Measurement of intracranial pressure (ICP) plays an important role in long-term monitoring and neuro-intensive treatment of patients with a cerebral shunt. Currently, only two complete telemetric implants with different technical features are available worldwide. This prospective pilot study aims to examine patients who had both probes implanted at overlapping times for clinical reasons and represents the first in vivo comparison of both measurement methods. Materials and methods Patients with a primary subarachnoid hemorrhage or a spontaneous intracerebral hemorrhage with ventricular hemorrhage who had received a telemetric ICP probe (Raumedic ® NEUROVENT ® -P-tel) were included in the study. Conventional external ventricular drainages (EVD) and ventriculoperitoneal shunts with a telemetric ICP probe (Miethke Sensor Reservoir) were implanted in patients with hydrocephalus who required CSF (cerebrospinal fluid) drainage. Absolute ICP values from all systems were obtained. Due to the overlapping implantation time, parallel ICP measurements were performed via two devices simultaneously. ICP measurements via the sensor reservoir were repeated after 3 and 9 months. Differences between the absolute ICP values measured via the NEUROVENT ® -P-tel probe, the Miethke sensor reservoir ® , and the EVD were analyzed. Results Seventeen patients were included in the present study between 2016 and 2018. 63% of all patients were male. In 11 patients the ICP measurements were followed up with both devices for 3 months. ICP measurements of the sensor reservoir showed corresponding trends in 9 cases compared to ICP measurement via the telemetry probe or EVD. Difference in absolute ICP values ranged between 14.5 mmHg and 0.0 mmHg. The average difference of the absolute ICP values in 8 cases was ≤ 3.5 mmHg. Conclusion ICP measurements with both systems continuously showed synchronous absolute ICP values, however absolute values of ICP measurement with the different systems did not match.

中文翻译：

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测量颅内压的不同遥测方法的比较研究：一项前瞻性试点研究

目的 颅内压（ICP）测量在脑分流患者的长期监测和神经强化治疗中发挥着重要作用。目前，全球只有两种具有不同技术特征的完整遥测植入物。这项前瞻性试点研究旨在检查出于临床原因在重叠时间植入两种探针的患者，并代表了两种测量方法的首次体内比较。材料和方法 本研究纳入了接受遥测 ICP 探头 (Raumedic ® NEUROVENT ® -P-tel) 的原发性蛛网膜下腔出血或自发性脑出血伴脑室出血的患者。需要脑脊液（CSF）引流的脑积水患者植入传统的脑室外引流（EVD）和带有遥测ICP探头（Miethke传感器储液器）的脑室腹腔分流器。获得了所有系统的绝对 ICP 值。由于植入时间重叠，因此通过两个设备同时进行并行 ICP 测量。3 个月和 9 个月后，通过传感器储液罐重复进行 ICP 测量。分析了通过 NEUROVENT ® -P-tel 探头、Miethke 传感器储液器 ® 和 EVD 测量的绝对 ICP 值之间的差异。结果 2016 年至 2018 年间，本研究纳入了 17 名患者。所有患者中 63% 为男性。使用这两种设备对 11 名患者的 ICP 测量进行了为期 3 个月的随访。与通过遥测探头或 EVD 进行的 ICP 测量相比，传感器储液器的 ICP 测量在 9 个案例中显示出相应的趋势。绝对 ICP 值的差异范围在 14.5 mmHg 和 0.0 mmHg 之间。8例ICP绝对值平均差值≤3.5 mmHg。结论 两个系统的 ICP 测量连续显示同步的绝对 ICP 值，但不同系统的 ICP 测量的绝对值并不匹配。