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Good Agreement Between Echocardiography and Impedance Cardiography in the Assessment of Left Ventricular Performance in Hypertensive Patients

2018Journal article Open access
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dc.contributor.authorLeão, R
dc.contributor.authorMarques da Silva, P
dc.contributor.authorPocinho, R
dc.contributor.authorAlves, M
dc.contributor.authorVirella, D
dc.contributor.authorPalma Reis, R
dc.date.accessioned2021-04-20T15:47:59Z
dc.date.available2021-04-20T15:47:59Z
dc.date.issued2018
dc.description.abstractBackground: Impedance cardiography (ICG) is a noninvasive hemodynamic monitoring tool which can define hypertensive patients' hemodynamic profiles and help to tailor antihypertensive therapy. This study assesses the concordance between ICG-derived indexes used to evaluate left ventricular performance and transthoracic echocardiography (TTE) in hypertensive patients. Methods: In this IMPEDDANS post-hoc analysis, the ICG-derived indexes are compared with TTE by Bland-Altman method. Statistical significance of the relationship between the values obtained was assessed by generalized linear mixed-effects models. Results: In supine position, Bland-Altman analysis showed good concordance for cardiac output (CO) (mean difference of 0.006 mL/min [-0.120; 0.133]), cardiac index (CI) (mean difference of 0.016 mL/min/m2 [-0.471; 0.504]), pre-ejection period (PEP) (mean difference of -0.216 ms [-4.510; 4.077]), left ventricular ejection time (LVET) (mean difference of -0.140 ms [-6.573; 6.293]), and systolic time ratio (STR) (mean difference of -0.00004 [-0.008; 0.008]). In orthostatic position, good concordance was found for CO (mean difference 0.028 mL/min [-2.036; 1.980]), CI (mean difference -0.012 mL/min/m2 [-1.063; 1.039]), and STR (mean difference -0.101 [0.296; 0.094]). No significant difference between methods was identified by the linear mixed-effects models. Conclusion: The ICG-derived indexes CO, CI, PEP, LVET, and STR in supine position have good agreement with TTE. Therefore, ICG can be used to accurately evaluate left ventricular performance.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationClin Exp Hypertens. 2018;40(5):461-467.pt_PT
dc.identifier.doi10.1080/10641963.2017.1392558pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.17/3664
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherTaylor & Francispt_PT
dc.subjectAgedpt_PT
dc.subjectCardiac Outputpt_PT
dc.subjectFemalept_PT
dc.subjectHeart Ventriclespt_PT
dc.subjectHemodynamicspt_PT
dc.subjectHumanspt_PT
dc.subjectHypertensionpt_PT
dc.subjectMalept_PT
dc.subjectMiddle Agedpt_PT
dc.subjectSupine Positionpt_PT
dc.subjectCardiography, Impedancept_PT
dc.subjectEchocardiographypt_PT
dc.subjectHSJ MEDpt_PT
dc.subjectHSM MEDpt_PT
dc.subjectCHLC CINVpt_PT
dc.titleGood Agreement Between Echocardiography and Impedance Cardiography in the Assessment of Left Ventricular Performance in Hypertensive Patientspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage467pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage461pt_PT
oaire.citation.titleClinical and Experimental Hypertension (New York, N.Y. : 1993)pt_PT
oaire.citation.volume40pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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