bullet Sensors & Transducers Journal

    (ISSN: 2306-8515, e-ISSN 1726-5479)

   

    About this Journal

   Information for Authors

   Editorial Board

   Editorial Calendar

   Current Issue

   Browse Journal

S&T journal's cover

Submit Press Release

Submit White Paper

25 Top Downloaded Articles (2007-2012)

Search

Contact Us

 

 

 

 

Vol. 244, Issue 5, September 2020, pp. 1-6

 

Bullet

 

A Study of Cardiac Ventricle Performance Indices Estimated with Data
from Single-Beat Pressure Volume Loops
 

Edward Marcus

Cardiology Department, Children’s Hospital Boston, 9 Hope St., Waltham, Massachusetts, USA
Tel: (001) 781-216-2532

E-mail: ed.marcus@cardio.chboston.org

 

Received: 27 July 2020 /Accepted: 28 August 2020 /Published: 30 September 2020

Digital Sensors and Sensor Sysstems

 

Abstract: Cardiac ventricle function can be measured from a multiple-beat pressure volume loop sequence, or estimated from a single beat of pressure volume loop data. In this study, the effectiveness of single-beat estimation is evaluated with functional markers defined by maximum elastance, isovolumic mode developed pressure, ejecting mode pressure volume area, and isovolumic mode pressure volume area. These estimates applied a linear regression model of chamber volume equilibrium as the calculation input. With data collected from 23 published pressure volume diagrams, estimates were assessed for percent differences to multi-beat outcomes. Results by method were: isovolumic pressure volume area (4 ± 4 %), isovolumic peak pressure (8 ± 6 %), ejecting pressure volume area (9 ± 6 %), and maximum elastance (22 ± 17%); p<.0001 one way ANOVA. The isovolumic pressure volume area estimates had the minimum overall error, and appeared to correlate with chamber volume variations through a measured range from 25 mL to 230 mL. This size correlation suggests the method is useful for interpreting normality of natural changes occurring during developmental stages of pediatric patient growth.

 

Keywords: Pressure Volume Loop, Single-Beat Estimates, Pressure Volume Area, Isovolumic Contracting Mode, Contractility Methods.

 

Acrobat reader logo Click <here> or title of paper to download the full pages article in pdf format

 

 

This work is licensed under a Creative Commons 4.0 International License

 

 Creative Commons License
 

 

 

 

 


1999 - 2020 Copyright ©, International Frequency Sensor Association (IFSA) Publishing, S.L. All Rights Reserved.


Home - News - Links - Archives - Tools - Voltage-to-Frequency Converters - Standardization - Patents - Marketplace - Projects - Wish List - e-Shop - Sensor Jobs - Membership - Videos - Publishing - Site Map - Subscribe - Search

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Submit Press Release - Submit White Paper - Testimonies - Twitter - Facebook - LinkedIn