Insights into RC time curve fit analysis of pulmonary artery pressure decay.
Autor: | Manouras A; Heart and Vascular Center, Unit of Heart Failure, Arrhythmia and GUCH, Karolinska University Hospital, Stockholm, Sweden. aristomenis.manouras@ki.se.; Department of Medicine, Solna Karolinska Institutet, 17177, Stockholm, Sweden. aristomenis.manouras@ki.se., Lund LH; Heart and Vascular Center, Unit of Heart Failure, Arrhythmia and GUCH, Karolinska University Hospital, Stockholm, Sweden.; Department of Medicine, Solna Karolinska Institutet, 17177, Stockholm, Sweden., Nagy AI; Department of Medicine, Solna Karolinska Institutet, 17177, Stockholm, Sweden.; Heart and Vascular Center, Semmelweis University, Budapest, Hungary., Johnson J; Centre for Fetal Medicine Department of Obstetrics and Gynecology, Karolinska University Hospital, Stockholm, Sweden. |
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Jazyk: | angličtina |
Zdroj: | BMC pulmonary medicine [BMC Pulm Med] 2024 Jun 25; Vol. 24 (1), pp. 295. Date of Electronic Publication: 2024 Jun 25. |
DOI: | 10.1186/s12890-024-03107-5 |
Abstrakt: | The notion of a constant relationship between resistance and capacitance (RC time) in the pulmonary circulation has been challenged by more recent research. The RC time can be obtained using either a simplified empirical approach or a semilogarithmic equation. Although direct curve-fit analysis is a feasible and ostensibly reference approach for RC analysis, it remains largely unexplored. We aimed to study the relationship between various RC methods in different states of pulmonary hemodynamics. Methods In total, 182 patients underwent clinically indicated right heart catheterization. The pressure curves were exported and processed using the MATLAB software. We calculated the RC time using the empirical method (RC (© 2024. The Author(s).) |
Databáze: | MEDLINE |
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