The Camino Intracranial Pressure Sensor: Is it Optimal Technology? An Internal Audit with a Review of Current Intracranial Pressure Monitoring Technologies

Piper, Ian; Barnes, Anna; Smith, Douglas C.; Dunn, Lee

doi:10.1097/00006123-200111000-00026

Cited by 45 publications

(37 citation statements)

References 16 publications

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“…Technical errors were present in 4,5% of cases, most often related to the fiber optic cable itself. Similar study by Piper et al [75] found 10% faulty sensors in a study that included a total of 50 Camino monitors. Another study [76], in which 328 patients with a Camino monitor were examined, showed hemorrhage in 1,1% of cases, infection, in 4,75% and technical errors in 3,14%.…”

Section: Invasive Methods Of Measuring Icpsupporting

confidence: 71%

“…Precision wise, there is not a great difference between these two techniques, despite the fact that most microtransducers cannot be recalibrated. However, in this context it is important to point out that the Camino MicroSensor has problems with a large zero drift [74, 75]. Economically, microtransducers are more expensive, but apparently they carry a lower rate of postoperative infections.…”

Section: Discussionmentioning

confidence: 99%

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Intracranial Pressure Monitoring: Invasive versus Non-Invasive Methods—A Review

Raboel

Bartek

Andresen

et al. 2012

Critical Care Research and Practice

294

326

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Monitoring of intracranial pressure (ICP) has been used for decades in the fields of neurosurgery and neurology. There are multiple techniques: invasive as well as noninvasive. This paper aims to provide an overview of the advantages and disadvantages of the most common and well-known methods as well as assess whether noninvasive techniques (transcranial Doppler, tympanic membrane displacement, optic nerve sheath diameter, CT scan/MRI and fundoscopy) can be used as reliable alternatives to the invasive techniques (ventriculostomy and microtransducers). Ventriculostomy is considered the gold standard in terms of accurate measurement of pressure, although microtransducers generally are just as accurate. Both invasive techniques are associated with a minor risk of complications such as hemorrhage and infection. Furthermore, zero drift is a problem with selected microtransducers. The non-invasive techniques are without the invasive methods' risk of complication, but fail to measure ICP accurately enough to be used as routine alternatives to invasive measurement. We conclude that invasive measurement is currently the only option for accurate measurement of ICP.

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Section: Invasive Methods Of Measuring Icpsupporting

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Intracranial Pressure Monitoring: Invasive versus Non-Invasive Methods—A Review

Raboel

Bartek

Andresen

et al. 2012

Critical Care Research and Practice

294

326

View full text Add to dashboard Cite

show abstract

“…While the Edward’s fluid sensor is extensively used for monitoring of fluid-pressures in general, including arterial blood pressure, intraventricular pressure and central venous pressure, dedicated ICP sensors were represented by the solid Codman ICP sensor [24-28], the air-pouch Spiegelberg ICP sensor [29,30], and the fibreoptic Camino ICP sensor [31,32]. …”

Section: Discussionmentioning

confidence: 99%

An intracranial pressure-derived index monitored simultaneously from two separate sensors in patients with cerebral bleeds: comparison of findings

Eide

Sorteberg

2013

BioMedical Engineering OnLine

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BackgroundIn an attempt to characterize the intracranial pressure-volume compensatory reserve capacity, the correlation coefficient (R) between the ICP wave amplitude (A) and the ICP (P) level (RAP) has been applied in the surveillance of neurosurgical patients. However, as the ICP level may become altered by electrostatic discharges, human factors, technical factors and technology issues related to the ICP sensors, erroneous ICP scores may become revealed to the physician, and also become incorporated into the calculated RAP index. To evaluate the problem with regard to the RAP, we compared simultaneous RAP values from two separate ICP signals in the same patient.Materials and MethodsWe retrieved our recordings in 20 patients with cerebral bleeds wherein the ICP had been recorded simultaneously from two different sensors. Sensor 1 was always a solid sensor while sensor 2 was a solid sensor (Category A), a fluid sensor (Category B), an air-pouch sensor (Category C), or a fibre-optic sensor (Category D). The simultaneous signals were analyzed with automatic identification of the cardiac induced ICP waves, with subsequent determination and comparison of the Pearson correlation coefficient between mean wave amplitude (MWA) and mean ICP (RAP) for 40 6-s time windows every 4-min period.ResultsA total of 23,056 4-min RAP observations were compared. A difference in RAP ≥0.4 between the two signals was seen in 4% of the observations in Category A-, in 44% of observations in Category B -, in 20% of observations in Category C -, and in 28% of observations in Category D patients, respectively. Moreover, the combination of a RAP of <0.6 in one signal and ≥0.6 in the other was seen in >20% of scores in 3/5 Category A -, in 3/5 Category B -, in 5/7 Category C - and 1/3 Category D patients.ConclusionsSimultaneous monitoring of the ICP-derived index RAP from two separate ICP sensors reveals marked differences in the index values. These differences in RAP may be explained by erroneous scoring of the ICP level. This will hamper the usefulness of RAP as a guide in the management of neurosurgical patients.

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“…11 Microtransducers cannot be generally re-zeroed after insertion and considerable zero drift can sometimes occur in long term monitoring. 12 This problem has been addressed in the balloon-like Spiegelberg transducer which may zero itself every set time interval, although its limited bandwidth may make most of the methods used for the ICP waveform analysis impossible. 13 Contemporary epidural sensors are much more reliable than 10 years ago.…”

Section: Methods Of Measurementmentioning

confidence: 99%