Good agreement between echocardiography and impedance cardiography in the assessment of left ventricular performance in hypertensive patients
| Autor: | Daniel Virella, Rodrigo Nazário Leão, Roberto Palma dos Reis, Rita Marques Pocinho, Pedro Marques da Silva, Marta Alves |
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| Rok vydání: | 2017 |
| Předmět: |
Male
Cardiac output medicine.medical_specialty Supine position genetic structures HSM MED Physiology Heart Ventricles Concordance Cardiac index CHLC CINV Hemodynamics Left Ventricular Ejection Time 030204 cardiovascular system & hematology Cardiography Impedance 03 medical and health sciences 0302 clinical medicine 030202 anesthesiology HSJ MED Statistical significance Internal medicine Supine Position Internal Medicine medicine Humans Cardiac Output Aged medicine.diagnostic_test business.industry General Medicine Middle Aged Impedance cardiography Echocardiography Hypertension Cardiology Female business |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP |
| ISSN: | 1525-6006 1064-1963 |
| DOI: | 10.1080/10641963.2017.1392558 |
| Popis: | Background: 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. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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