Reference intervals for the evoked tympanic membrane displacement measurement: a non-invasive measure of intracranial pressure

2018 ◽  
Vol 39 (1) ◽  
pp. 015008 ◽  
Author(s):  
Cherith M Campbell-Bell ◽  
Anthony A Birch ◽  
Dario Vignali ◽  
Diederik Bulters ◽  
Robert J Marchbanks
Keyword(s):  
Intracranial Pressure ◽  
Tympanic Membrane ◽  
Reference Intervals ◽  
Displacement Measurement ◽  
Non Invasive ◽  
Membrane Displacement

scholarly journals Quantifying the contribution of intracranial pressure and arterial blood pressure to spontaneous tympanic membrane displacement

2018 ◽  
Vol 39 (8) ◽  
pp. 085002
Author(s):  
Wahbi K El-Bouri ◽  
Dario Vignali ◽  
Konstantina Iliadi ◽  
Diederik Bulters ◽  
Robert J Marchbanks ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Intracranial Pressure ◽  
Tympanic Membrane ◽  
Arterial Blood Pressure ◽  
Arterial Blood ◽  
Membrane Displacement

Tympanic membrane displacement testing in regular assessment of intracranial pressure in eight children with shunted hydrocephalus

1998 ◽  
Vol 88 (6) ◽  
pp. 983-995 ◽  
Author(s):  
Madan Samuel ◽  
David M. Burge ◽  
Robert J. Marchbanks
Keyword(s):  
Intracranial Pressure ◽  
Positive Predictive Value ◽  
Tympanic Membrane ◽  
Predictive Value ◽  
Comparative Evaluation ◽  
Icp Monitoring ◽  
Content Type ◽  
Accuracy And Repeatability ◽  
Fine Print ◽  
Membrane Displacement

Object. The authors assessed the accuracy and repeatability of the tympanic membrane displacement (TMD) test, an audiometric technique that is used to evaluate changes in intracranial pressure (ICP) in children with shunted hydrocephalus. Methods. A prospective comparative evaluation of 31 clinical episodes of shunt malfunction was made by using the serial TMD test and direct ICP measurement in eight children with shunted hydrocephalus between January 1995 and February 1996. The volume displacement of the tympanic membrane (Vm) on stapedial contraction was inward for raised ICP in 11 instances and ranged from −120 to −539 nl (mean −263.5 nl). This was confirmed by direct ICP monitoring, which showed values ranging from 20 to 30 mm Hg (mean 26 mm Hg). The TMD test measurement (Vm) in 18 instances of low ICP ranged from 263 to 717 nl (mean 431.3 nl); this was corroborated by direct ICP measurement, which ranged from 3 to 7 mm Hg (mean 4.2 mm Hg). The normal baseline Vm values obtained when patients were asymptomatic ranged from −98 to 197 nl (mean 110 nl). As a noninvasive diagnostic tool used in predicting changes in ICP, the TMD test had a sensitivity of 83% and specificity of 100%. The positive predictive value of the test was 100% and the negative predictive value was 29%. Conclusions. The TMD test can be used on a regular basis as a reproducible investigative tool in the assessment of ICP in children with shunted hydrocephalus, thereby reducing the need for invasive ICP monitoring. The equipment necessary to perform this testing is mobile. It will provide a useful serial guide to ICP abnormalities in children with shunted hydrocephalus.

Modern concepts of non-invasive methods for measuring intracranial pressure

2021 ◽  
pp. 32-35
Author(s):  
S. V. Lobzin ◽  
L. G. Nikiforova
Keyword(s):  
Blood Pressure ◽  
Intracranial Pressure ◽  
Magnetic Resonance Tomography ◽  
Doppler Imaging ◽  
Imaging Evaluation ◽  
Non Invasive ◽  
Optic Nerve Diameter ◽  
Functional Features ◽  
Membrane Displacement ◽  
Invasive Measurement

The article presents the review of Russian and foreign literature, with the aim to summarize the results of the researches for the purpose of identification of the most perspective modern techniques of non‑invasive measurement of intracranial pressure. The methods of assessment of intracranial pressure based on morphological and functional features of intracranial organs are described: transcranial Doppler imaging, evaluation of tympanic membrane displacement, evaluation of blood pressure in retinal veins, evaluation of optic nerve diameter, CT imaging and magnetic resonance tomography. The attention is paid to merits and demerits of the presented methods, a possibility of their use in clinical practice.

scholarly journals Utility of the Tympanic Membrane Pressure Waveform for Non-invasive Estimation of The Intracranial Pressure Waveform

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Karen Brastad Evensen ◽  
Klaus Paulat ◽  
Fabrice Prieur ◽  
Sverre Holm ◽  
Per Kristian Eide
Keyword(s):  
Intracranial Pressure ◽  
Tympanic Membrane ◽  
Pressure Waveform ◽  
Non Invasive ◽  
Intracranial Pressure Waveform

scholarly journals The tympanic membrane displacement analyser for monitoring intracranial pressure in children

2013 ◽  
Vol 29 (6) ◽  
pp. 927-933 ◽  
Author(s):  
Samson Gwer ◽  
Victoria Sheward ◽  
Anthony Birch ◽  
Robert Marchbanks ◽  
Richard Idro ◽  
...  
Keyword(s):  
Intracranial Pressure ◽  
Tympanic Membrane ◽  
Membrane Displacement
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