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http://hdl.handle.net/1942/15412
Title: | Non-invasive cardiovascular profiling using combined electrocardiogram-Doppler ultrasonography and impedance cardiography: An experimental approach | Authors: | TOMSIN, Kathleen VRIENS, Annette Mesens, Tinne GYSELAERS, Wilfried |
Issue Date: | 2013 | Publisher: | WILEY-BLACKWELL | Source: | CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY, 40 (7), p. 438-442 | Abstract: | In the present study, the feasibility of cardiovascular profiling using both combined electrocardiogram (ECG)-Doppler ultrasonography and impedance cardiography (ICG) was evaluated. Fourteen non-pregnant healthy women received 500mL saline solution (NaCl 0.9% at 999mL/h) intravenously by steady state infusion. Before and after this acute volume loading, we measured orthostatic-challenged cardiac and arterial characteristics using ICG and assessed venous characteristics by combined ECG-Doppler before and during the Valsalva manoeuvre. Changes are expressed as the mean +/- SEM and were evaluated by the one-sample Wilcoxon signed-rank test. After volume loading, the observed fall in stroke volume after postural change from supine to standing decreased (-14 +/- 3 vs -23 +/- 2%; P=0.011). Hepatic A wave velocity increased 63 +/- 28% after volume loading (P=0.007) and decreased during the Valsalva manoeuvre (-205 +/- 21%; P=0.001). Volume loading raised the thoracic fluid content index in both the supine and standing positions (7 +/- 2% and 10 +/- 1%, respectively; P0.014). Combined ECG-Doppler ultrasonography and ICG enables the non-invasive identification of concomitant haemodynamic changes at the level of the heart, the arterial bed and the venous compartment. Our data support the view that non-invasive cardiovascular profiling is feasible, which seems particularly useful for the evaluation of patients who are not critically ill, such as pregnant women. | Notes: | Tomsin, K (reprint author), Ziekenhuis Oost Limburg, Dept Obstet & Gynaecol, B-3600 Genk, Belgium. Hasselt Univ, Fac Med & Life Sci, Diepenbeek, Belgium. kathleen.tomsin@ZOL.be | Keywords: | cardiovascular physiology; Doppler ultrasound; feasibility studies; impedance cardiography;Pharmacology & Pharmacy; Physiology | Document URI: | http://hdl.handle.net/1942/15412 | ISSN: | 0305-1870 | e-ISSN: | 1440-1681 | DOI: | 10.1111/1440-1681.12105 | ISI #: | 000320781400007 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2014 |
Appears in Collections: | Research publications |
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