Assessing cardiac contractility and cardiovascular interaction
US6090047A · kind A · utility
30Cited by
11References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1997 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Nov 3, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A novel method for estimating the end-systolic pressure-volume relationship (ESPVR) is presented. The method provides for accurate estimation of the ESPVR from a single beat of the cardiac cycle. The method is based on normalized human time varying elastance curves [E.sub.N (t.sub.N)]. The ESPVR is estimated from one beat using PV data measured at normalized time t.sub.N and end-systole (t.sub.max) to predict intercept: ##EQU1## and slope: E.sub.max(SB) =P(t.sub.max)/[V(t.sub.max)-V.sub.0(SB) ]. The present invention provides a method for ESPVR estimation which is non-invasive and particularly applicable for bedside applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.