scholarly journals A Novel Noninvasive Technique for Intracranial Pressure Waveform Monitoring in Critical Care

2021 ◽  
Vol 11 (12) ◽  
pp. 1302
Author(s):  
Sérgio Brasil ◽  
Davi Jorge Fontoura Solla ◽  
Ricardo de Carvalho Nogueira ◽  
Manoel Jacobsen Teixeira ◽  
Luiz Marcelo Sá Malbouisson ◽  
...  
Keyword(s):  
Critical Care ◽  
Intracranial Pressure ◽  
Pressure Waveform ◽  
Icp Monitoring ◽  
Amplitude Ratios ◽  
Time Intervals ◽  
Noninvasive Technique ◽  
Time To Peak ◽  
Intracranial Pressure Waveform ◽  
Operator Curve

Background: We validated a new noninvasive tool (B4C) to assess intracranial pressure waveform (ICPW) morphology in a set of neurocritical patients, correlating the data with ICPW obtained from invasive catheter monitoring. Materials and Methods: Patients undergoing invasive intracranial pressure (ICP) monitoring were consecutively evaluated using the B4C sensor. Ultrasound-guided manual internal jugular vein (IJV) compression was performed to elevate ICP from the baseline. ICP values, amplitudes, and time intervals (P2/P1 ratio and time-to-peak [TTP]) between the ICP and B4C waveform peaks were analyzed. Results: Among 41 patients, the main causes for ICP monitoring included traumatic brain injury, subarachnoid hemorrhage, and stroke. Bland–Altman’s plot indicated agreement between the ICPW parameters obtained using both techniques. The strongest Pearson’s correlation for P2/P1 and TTP was observed among patients with no cranial damage (r = 0.72 and 0.85, respectively) to the detriment of those who have undergone craniotomies or craniectomies. P2/P1 values of 1 were equivalent between the two techniques (area under the receiver operator curve [AUROC], 0.9) whereas B4C cut-off 1.2 was predictive of intracranial hypertension (AUROC 0.9, p < 000.1 for ICP > 20 mmHg). Conclusion: B4C provided biometric amplitude ratios correlated with ICPW variation morphology and is useful for noninvasive critical care monitoring.

scholarly journals A Novel Noninvasive Technique for Intracranial Pressure Waveform Monitoring in Critical Care

2021 ◽  
Author(s):  
Sérgio Brasil ◽  
Davi Solla ◽  
Ricardo de Carvalho Nogueira ◽  
Manoel Jacobsen Teixeira ◽  
Luiz Marcelo Sá Malbouisson ◽  
...  
Keyword(s):  
Critical Care ◽  
Intracranial Pressure ◽  
Pressure Waveform ◽  
Icp Monitoring ◽  
Amplitude Ratios ◽  
Time Intervals ◽  
Noninvasive Technique ◽  
Time To Peak ◽  
Intracranial Pressure Waveform ◽  
Operator Curve

We validated a new noninvasive tool (B4C) to assess intracranial pressure waveform (ICPW) morphology in a set of neurocritical patients, correlating the data with ICPW obtained from invasive catheter monitoring. Materials and Methods: Patients undergoing invasive intracranial pressure (ICP) monitoring were consecutively evaluated using the B4C sensor. Ultrasound-guided manual internal jugular vein (IJV) compression was performed to elevate ICP from the baseline. ICP values, amplitudes, and time intervals (P2/P1 ratio and time-to-peak [TTP]) between the ICP and B4C waveform peaks were analyzed. Results: Among 41 patients, the main causes for ICP monitoring included traumatic brain injury, subarachnoid hemorrhage, and stroke. Bland-Altman&rsquo;s plot indicated agreement between the ICPW parameters obtained using both techniques. The strongest Pearson&rsquo;s correlation for P2/P1 and TTP was observed among patients with no cranial damage (r = 0.72 and 0.85, respectively) in detriment of those who have undergone craniotomies or craniectomies. P2/P1 values of 1 were equivalent between the two techniques (area under the receiver operator curve [AUROC], 0.9) whereas B4C cut-off 1.2 was predictive of intracranial hypertension (AUROC 0.9, p &lt; 000.1 for ICP &gt; 20 mmHg). Conclusion: B4C provided biometric amplitude ratios correlated with ICPW variation morphology and is useful for noninvasive critical care monitoring.

Intracranial Pressure Monitoring

1993 ◽  
Vol 4 (1) ◽  
pp. 148-160
Author(s):  
Therese S. Richmond
Keyword(s):  
Critical Care ◽  
Intracranial Pressure ◽  
Intracranial Hypertension ◽  
Nursing Care ◽  
Critical Care Nurses ◽  
Intracranial Pressure Monitoring ◽  
Icp Monitoring ◽  
Pressure Monitoring ◽  
Evaluation Of Care ◽  
Planning Intervention

Intracranial pressure monitoring (ICP) is a technology that assists critical care nurses in the assessment, planning, intervention, and evaluation of care. The physiologic basis of intracranial hypertension (ICH) and ICP monitoring are reviewed. Types of monitors arc described. Advantages, disadvantages, and complications of fluid-filled versus fiberoptic systems are explored. Priorities in nursing care of the patient with an ICP monitor are examined

Noninvasive Transfontanelle Monitoring of the Intracerebral Pressure in Comparison With an Invasive Intradural Intracranial Pressure Device: A Prospective Study

2017 ◽  
Vol 13 (5) ◽  
pp. 609-613 ◽  
Author(s):  
Bedjan Behmanesh ◽  
Marco Bartels ◽  
Florian Gessler ◽  
Natalie Filmann ◽  
Volker Seifert ◽  
...  
Keyword(s):  
Intracranial Pressure ◽  
Correlation Analysis ◽  
Correlation Coefficient ◽  
External Ventricular Drain ◽  
Method Comparison ◽  
Icp Monitoring ◽  
Validity And Reliability ◽  
Noninvasive Technique ◽  
Monitoring Method ◽  
Intracerebral Pressure

Abstract BACKGROUND: We previously introduced a novel noninvasive technique of intracranial pressure (ICP) monitoring in children with open fontanelles. OBJECTIVE: To compare the ICP obtained by our new technique to the ICP derived from an intradurally implanted ICP measurement device (external ventricular drain, subdural ICP device). METHODS: Children with open fontanelles and need of intracranial monitoring were included in this study. A standard ICP probe was placed upon the frontal fontanelle and data were compared with the values recorded by an already invasively implanted subdural ICP technique. The 2 methods of ICP measurement were evaluated using the correlation coefficient, Bland and Altman method and method comparison by Carstensen. RESULTS: Five children under the age of 1 year with an open frontal fontanelle were included in this study. Three were male and 2 were female. Mean age was 7 months. A total of 139 pairs of measurements were assessed. Mean transfontanelle ICP was 7.6 mm Hg. Mean ICP measured subdurally was 5.4 mm Hg. The correlation analysis showed a correlation coefficient of 0.7. The Bland-Altman plot revealed a good accuracy of the new method with &gt;95% of the values within the limits of agreement. An additional method comparison analysis confirmed the finding of accurate ICP measurements between both applied methods. CONCLUSION: The noninvasive transfontanelle ICP monitoring method displayed a high validity and reliability as proven by correlation analysis. This novel technique might therefore be an interesting and promising tool for noninvasive ICP monitoring in children. But further research is necessary to evaluate the accuracy of this technique in children with elevated ICP.

Prediction of intracranial hypertension through noninvasive intracranial pressure waveform analysis in pediatric hydrocephalus

2017 ◽  
Vol 33 (9) ◽  
pp. 1517-1524 ◽  
Author(s):  
Matheus Fernando Manzolli Ballestero ◽  
Gustavo Frigieri ◽  
Brenno Caetano Troca Cabella ◽  
Sergio Mascarenhas de Oliveira ◽  
Ricardo Santos de Oliveira
Keyword(s):  
Intracranial Pressure ◽  
Intracranial Hypertension ◽  
Waveform Analysis ◽  
Pressure Waveform ◽  
Pediatric Hydrocephalus ◽  
Intracranial Pressure Waveform

scholarly journals Slope of the intracranial pressure waveform after traumatic brain injury

2008 ◽  
Vol 70 (1) ◽  
pp. 70-74 ◽  
Author(s):  
Franklin D. Westhout ◽  
Laura S. Paré ◽  
Ralph J. Delfino ◽  
Steven C. Cramer
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Intracranial Pressure ◽  
Pressure Waveform ◽  
Intracranial Pressure Waveform

scholarly journals Use of non-invasive intracranial pressure pulse waveform to monitor patients with End-Stage Renal Disease (ESRD)

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0240570
Author(s):  
Cristiane Rickli ◽  
Lais Daiene Cosmoski ◽  
Fábio André dos Santos ◽  
Gustavo Henrique Frigieri ◽  
Nicollas Nunes Rabelo ◽  
...  
Keyword(s):  
Intracranial Pressure ◽  
Renal Disease ◽  
End Stage Renal Disease ◽  
Time To Peak ◽  
Hemodialysis Session ◽  
Before And After ◽  
Intracranial Pressure Waveform ◽  
Stage Renal Disease ◽  
End Stage

End-stage renal disease (ESRD) is treated mainly by hemodialysis, however, hemodialysis is associated with frequent complications, some of them involve the increased intracranial pressure. In this context, monitoring the intracranial pressure of these patients may lead to a better understanding of how intracranial pressure morphology varies with hemodialysis. This study aimed to follow-up patients with ESRD by monitoring intracranial pressure before and after hemodialysis sessions using a noninvasive method. We followed-up 42 patients with ESRD in hemodialysis, for six months. Noninvasive intracranial pressure monitoring data were obtained through analysis of intracranial pressure waveform morphology, this information was uploaded to Brain4care® cloud algorithm for analysis. The cloud automatically sends a report containing intracranial pressure parameters. In total, 4881 data points were collected during the six months of follow-up. The intracranial pressure parameters (time to peak and P2/P1 ratio) were significantly higher in predialysis when compared to postdialysis for the three weekly sessions and throughout the follow-up period (p<0.01) data showed general improvement in brain compliance after the hemodialysis session. Furthermore, intracranial pressure parameters were significantly higher in the first weekly hemodialysis session (p<0.05). In conclusion, there were significant differences between pre and postdialysis intracranial pressure in patients with ESRD on hemodialysis. Additionally, the pattern of the intracranial pressure alterations was consistent over time suggesting that hemodialysis can improve time to peak and P2/P1 ratio which may reflect in brain compliance.

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