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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24378

Title: Feasibility of Combined Doppler–ECG Assessment of Internal Jugular Veins
Authors: Dierickx, Inge
Van Hooland, Simon
Tomsin, Kathleen
Vanhercke, Daniel
Cools, Wilfried
Fransen, Hendrik
Gyselaers, Wilfried
Issue Date: 2017
Citation: ULTRASOUND IN MEDICINE AND BIOLOGY, 43(9), p. 1853-1860
Abstract: A standardized combined Doppler-electrocardiography technique was developed for measurement of the triphasic waveform characteristics in the internal jugular vein. Flow velocities at the A, X, Vand Y peaks, the RR interval and the PA and RX times were measured. From these the venous impedance index ([X-A]/X) and the ratios PA/RR and RX/RR were calculated. Six measurements were performed at three different locations by two ultrasonographers in 21 randomly selected pregnant and non-pregnant women. Statistical models proved the feasibility and reproducibility of this technique, with the highest concordance correlation coefficients in the right distal internal vein. Bootstrapping revealed that repeating the measurements more than four times would not significantly enhance the precision of the estimated mean. Concordance correlation coefficients for the venous impedance index, PA time and PA/RR ratio were. >0.63 for all three locations, proving their possible use in ongoing and future studies, analogous to previous studies in kidney and liver. (E-mail: inge.dierickx@azstlucas.be) (C) 2017 World Federation for Ultrasound in Medicine & Biology.
Notes: [Dierickx, Inge] Algemeen Ziekenhuis Sint Lucas, Dept Obstet & Gynecol, Groenebriel 1, B-9000 Ghent, Belgium. [Dierickx, Inge; Tomsin, Kathleen; Gyselaers, Wilfried] Univ Hasselt, Dept Physiol, Hasselt, Belgium. [Van Hooland, Simon] Algemeen Ziekenhuis Sint Lucas, Dept Nephrol, Ghent, Belgium. [Tomsin, Kathleen; Gyselaers, Wilfried] Ziekenhuis Oost Limburg, Dept Obstet & Gynecol, Genk, Belgium. [Tomsin, Kathleen] Maastricht Univ, Dept Obstet & Gynecol, Med Ctr, Maastricht, Netherlands. [Vanhercke, Daniel] Algemeen Ziekenhuis Sint Lucas, Dept Cardiol, Ghent, Belgium. [Cools, Wilfried] Univ Hasselt, I BioStat, Hasselt, Belgium. [Fransen, Hendrik] Algemeen Ziekenhuis Sint Lucas, Dept Radiol, Ghent, Belgium.
URI: http://hdl.handle.net/1942/24378
DOI: 10.1016/j.ultrasmedbio.2017.04.001
ISI #: 000406420200012
ISSN: 0301-5629
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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