Cargando…

Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection

This paper presents a concept for detection of venous air emboli inside the superior vena cava using a central venous catheter with integrated Doppler ultrasound transducer installed on the tip. Several Doppler probes each with a single insonation frequencies of 2 MHz, 4 MHz or 8 MHz are characteriz...

Descripción completa

Detalles Bibliográficos
Autores principales: Stark, Philipp Ch., Kalkbrenner, Christoph, Klingler, Werner, Brucher, Rainer
Formato: Online Artículo Texto
Lenguaje:English
Publicado: German Medical Science GMS Publishing House 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9290754/
https://www.ncbi.nlm.nih.gov/pubmed/35910412
http://dx.doi.org/10.3205/hta000135
_version_ 1784748983441162240
author Stark, Philipp Ch.
Kalkbrenner, Christoph
Klingler, Werner
Brucher, Rainer
author_facet Stark, Philipp Ch.
Kalkbrenner, Christoph
Klingler, Werner
Brucher, Rainer
author_sort Stark, Philipp Ch.
collection PubMed
description This paper presents a concept for detection of venous air emboli inside the superior vena cava using a central venous catheter with integrated Doppler ultrasound transducer installed on the tip. Several Doppler probes each with a single insonation frequencies of 2 MHz, 4 MHz or 8 MHz are characterized and compared for usefulness in this scenario. During in vitro experiments using an artificial blood circulatory with blood mimicking fluid bubbles with defined volumes were injected and recorded as gaseous embolic events. The in vitro results of measured embolus-blood-ratio values (EBR) in respect to the air bubbles volumes and its echogenicity showed a good correlation with the simulation model of spherical cross section scattering of such air bubbles. It is shown that the probe design still needs some improvements using a 4 MHz insonation frequency to get a useable detection sensitivity in such scenario within vena cava superior. The results suggest that it is possible to estimate the air bubble volume corresponding to the EBR using such a catheter probe.
format Online
Article
Text
id pubmed-9290754
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher German Medical Science GMS Publishing House
record_format MEDLINE/PubMed
spelling pubmed-92907542022-07-29 Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection Stark, Philipp Ch. Kalkbrenner, Christoph Klingler, Werner Brucher, Rainer GMS Health Innov Technol Article This paper presents a concept for detection of venous air emboli inside the superior vena cava using a central venous catheter with integrated Doppler ultrasound transducer installed on the tip. Several Doppler probes each with a single insonation frequencies of 2 MHz, 4 MHz or 8 MHz are characterized and compared for usefulness in this scenario. During in vitro experiments using an artificial blood circulatory with blood mimicking fluid bubbles with defined volumes were injected and recorded as gaseous embolic events. The in vitro results of measured embolus-blood-ratio values (EBR) in respect to the air bubbles volumes and its echogenicity showed a good correlation with the simulation model of spherical cross section scattering of such air bubbles. It is shown that the probe design still needs some improvements using a 4 MHz insonation frequency to get a useable detection sensitivity in such scenario within vena cava superior. The results suggest that it is possible to estimate the air bubble volume corresponding to the EBR using such a catheter probe. German Medical Science GMS Publishing House 2022-06-22 /pmc/articles/PMC9290754/ /pubmed/35910412 http://dx.doi.org/10.3205/hta000135 Text en Copyright © 2022 Stark et al. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Stark, Philipp Ch.
Kalkbrenner, Christoph
Klingler, Werner
Brucher, Rainer
Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection
title Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection
title_full Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection
title_fullStr Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection
title_full_unstemmed Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection
title_short Characterization and comparison of a 2-, 4- and 8-MHz central venous catheter ultrasound probe for venous air emboli detection
title_sort characterization and comparison of a 2-, 4- and 8-mhz central venous catheter ultrasound probe for venous air emboli detection
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9290754/
https://www.ncbi.nlm.nih.gov/pubmed/35910412
http://dx.doi.org/10.3205/hta000135
work_keys_str_mv AT starkphilippch characterizationandcomparisonofa24and8mhzcentralvenouscatheterultrasoundprobeforvenousairembolidetection
AT kalkbrennerchristoph characterizationandcomparisonofa24and8mhzcentralvenouscatheterultrasoundprobeforvenousairembolidetection
AT klinglerwerner characterizationandcomparisonofa24and8mhzcentralvenouscatheterultrasoundprobeforvenousairembolidetection
AT brucherrainer characterizationandcomparisonofa24and8mhzcentralvenouscatheterultrasoundprobeforvenousairembolidetection