For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
34
views
13
references
 Top references
cited by
16
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      106
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Non-Invasive Cardiac Output Measurement in Low and Very Low Birth Weight Infants: A Method Comparison

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Background: Cardiac output (CO) measurement in low (LBW) and very low (VLBW) birth weight infants is difficult. Hitherto, sporadical transthoracic echocardiography (TTE) is the only non-invasive measurement method. Electrical velocimetry (EV) has been evaluated as an alternative in normal weight newborns.

          Objectives: The study was designed to evaluate if EV could be interchangeable with TTE even in LBW and VLBW infants.

          Methods: In 28 (17 LBW, 11 VLBW) pre-mature newborns, n = 228 simultaneous TTE (trans-aortic Doppler), and EV measurements (134 LBW, 94 VLBW) of stroke volume (SV) and heart rate (HR) were performed, thereof calculating body weight indexed SV (=SV*) and CO (=CO*) for all patients and the subgroups. Method comparison was performed by Bland–Altman plot, method precision expressed by calculation of the coefficient of variation (CV).

          Results: Mean CO* in all patients was 256.4 ± 44.8 (TTE) and 265.3 ± 48.8 (EV) ml/kg/min. Bias and precision were clinically acceptable, limits of agreement within the 30% criterion for method interchangeability ( 17). According to their different anatomic dimensions and pathophysiology, there were significant differences of SV(*), HR, and CO* for LBW and VLBW infants as well for inotropic treatment and ventilation mode.

          Conclusion: Extending recent publications on EV/TTE comparison in newborns, this study suggests that EV is also applicable in LWB/VLBW infants as a safe and easy to handle method for continuous CO monitoring in the NICU and PCICU.

          Related collections

          Most cited references13

          • Record: found
          • Abstract: not found
          • Article: not found

          Development and evaluation of an impedance cardiac output system.

          W G Kubicek, D A Witsoe, R Mattson … (1966)
          Article 0 comments Cited 55 times – based on 0 reviews     Review now
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Clinicians' abilities to estimate cardiac index in ventilated children and infants.

            S Tibby, M Hatherill, Eric D. Marsh … (1997)
            To evaluate the ability of clinicians involved in the provision of paediatric intensive care to estimate cardiac index in ventilated children, based on physical examination and clinical and bedside laboratory data. Clinicians were exposed to all available haemodynamic and laboratory data for each patient, allowed to make a physical examination, and asked to first categorize cardiac index as high, high to normal, low to normal, or low, and then to quantify this further with a numerical estimate. Cardiac index was measured simultaneously by femoral artery thermodilution (coefficient of variation 5.37%). One hundred and twelve estimates were made by 27 clinicians on 36 patients (median age 34.5 months). Measured cardiac index ranged from 1.39 to 6.84 1/min/m2. Overall, there was poor correlation categorically (kappa statistic 0.09, weighted kappa 0.169) and numerically (r = 0.24, 95% confidence interval 0.06 to 0.41), although some variation was seen among the various levels of seniority. Assuming that objective measurement, and hence manipulation, of haemodynamic variables may improve outcome, these findings support the need for a safe, accurate, and repeatable technique for measurement of cardiac index in children who are critically ill.
            Article 0 comments Cited 43 times – based on 0 reviews     Review now
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Continuous non-invasive cardiac output measurements in the neonate by electrical velocimetry: a comparison with echocardiography.

              Shahab Noori, Benazir Drabu, Sadaf Soleymani … (2012)
              Electrical velocimetry (EV) is a non-invasive method of continuous left cardiac output monitoring based on measurement of thoracic electrical bioimpedance. The objective was to validate EV by investigating the agreement in cardiac output measurements performed by EV and echocardiography. In this prospective observational study, left ventricular output (LVO) was simultaneously measured by EV (LVO(ev)) using Aesculon and by echocardiography (LVO(echo)) in healthy term neonates during the first 2 postnatal days. To determine the agreement between the two methods, we calculated the bias (mean difference) and precision (1.96×SD of the difference). As LVO(echo) has its own limitations, the authors also calculated the 'true precision' of EV adjusted for echocardiography as the reference method. The authors performed 115 paired measurements in 20 neonates. LVO(ev) and LVO(echo) were similar (534±105 vs 538±105 ml/min, p=0.7). The bias and precision of EV were -4 and 234 ml/min, respectively. The authors found the true precision of EV to be similar to the precision of echocardiography (31.6% vs 30%, respectively). There was no difference in bias and precision between the measurements obtained in patients with or without a haemodynamically significant patent ductus arteriosus. EV is as accurate in measuring LVO as echocardiography and the variation in the agreement between EV and echocardiography among the individual subjects reflects the limitations of both techniques.
              Article 0 comments Cited 34 times – based on 0 reviews     Review now
                Bookmark
                All references

                Author and article information

                Contributors
                Oswin Grollmuss: URI : http://frontiersin.org/people/u/63077
                Journal
                Journal ID (nlm-ta): Front Pediatr
                Journal ID (iso-abbrev): Front Pediatr
                Journal ID (publisher-id): Front. Pediatr.
                Title: Frontiers in Pediatrics
                Publisher: Frontiers Media S.A.
                ISSN (Electronic): 2296-2360
                Publication date (Electronic): 25 March 2014
                Publication date Collection: 2014
                Volume: 2
                Electronic Location Identifier: 16
                Affiliations
                [1] 1Centre Chirurgical Marie Lannelongue, INSERM 999, Université Paris XI Sud , Orsay, France
                [2] 2Institut de Puériculture et de Périnatalogie, Université Paris V Descartes , Clamart, France
                Author notes

                Edited by: Cecile Tissot, The University Children’s Hospital, Switzerland

                Reviewed by: Yves Durandy, Centre Chirurgical Marie Lannelongue, France; Jeffrey Feinstein, Stanford University, USA

                *Correspondence: Oswin Grollmuss, Centre Chirurgical Marie Lannelongue, INSERM 999, Université Paris XI, 133, Avenue de la Résistance, 92350 Le Plessis Robinson, Orsay, France e-mail: osgro@ 123456aol.com

                This article was submitted to Pediatric Cardiology, a section of the journal Frontiers in Pediatrics.

                Article
                DOI: 10.3389/fped.2014.00016
                PMC ID: 3971202
                PubMed ID: 24724074
                SO-VID: 1c8224e0-5e4b-4510-8e8b-c3604d6db039
                Copyright © Copyright © 2014 Grollmuss and Gonzalez.
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

                History
                Date received : 10 December 2013
                Date accepted : 05 March 2014
                Page count
                Figures: 2, Tables: 3, Equations: 1, References: 19, Pages: 5, Words: 3692
                Categories
                Subject: Pediatrics
                Subject: Methods Article

                Keywords: low birth weight infants,very low birth weight infants,neonatal intensive care unit,pediatric cardiac intensive care unit,stroke volume,cardiac output,electrical velocimetry,transthoracic echocardiograph
                Data availability:
                Keywords: low birth weight infants, very low birth weight infants, neonatal intensive care unit, pediatric cardiac intensive care unit, stroke volume, cardiac output, electrical velocimetry, transthoracic echocardiograph

                Comments

                Comment on this article

                scite_

                Similar content106

                See all similar

                Cited by16

                See all cited by

                Most referenced authors159

                See all reference authors