Method and system of determining cardiac contractility

Details Method and system of determining cardiac contractility Method and system of determining cardiac contractility

2005-09-06

2005-09-06

Nasser, Robert L. (Department: 3736)

Surgery

Diagnostic testing

Cardiovascular

C600S301000, C600S508000

Reexamination Certificate

active

06939303

ABSTRACT:
A method and system is provided for determining the cardiac contractility of a cardiovascular system. The method includes utilizing values representing stroke volume, preload, and afterload to calculate the cardiac contractility. The calculation may include a mathematical relationship in which the cardiac contractility is represented by a first edge of a tetrahedron, the preload is represented by a second edge of the tetrahedron, the afterload is represented by a third edge of the tetrahedron, and the stroke volume is represented by the volume of the tetrahedron. A display apparatus is also provided. The display apparatus includes a schematic representation of a tetrahedron and indicia indicating that the cardiac contractility, the preload, the afterload, and the stroke volume are represented by mutually distinct parameters of the tetrahedron.

REFERENCES:
patent: 4677984 (1987-07-01), Sramek
patent: 4877035 (1989-10-01), Bogen et al.
patent: 4943062 (1990-07-01), Gillette
patent: 5103828 (1992-04-01), Sramek
patent: 5139020 (1992-08-01), Koestner et al.
patent: 5222202 (1993-06-01), Koyamada
patent: 5265615 (1993-11-01), Frank et al.
patent: 5390679 (1995-02-01), Martin
patent: 5400793 (1995-03-01), Wesseling
patent: 5535753 (1996-07-01), Petrucelli et al.
patent: 5572634 (1996-11-01), Duluk, Jr.
patent: 5584298 (1996-12-01), Kabal
patent: 5631973 (1997-05-01), Green
patent: 5634467 (1997-06-01), Nevo
patent: 5647369 (1997-07-01), Petrucelli et al.
patent: 5696837 (1997-12-01), Green
patent: 5743268 (1998-04-01), Kabal
patent: 5758652 (1998-06-01), Nikolic
patent: 5836884 (1998-11-01), Chio
patent: 5886775 (1999-03-01), Houser et al.
patent: 5913826 (1999-06-01), Blank
patent: 6077236 (2000-06-01), Cunningham
patent: 6090047 (2000-07-01), Kass et al.
patent: 6120442 (2000-09-01), Hickey
patent: 6273855 (2001-08-01), Schmid et al.
patent: 6440078 (2002-08-01), Curiel et al.
“apparatus” The American Heritage Concise Dictionary (1994).
Henry, et al., Echocardiographic measurements in normal subjects from infancy to old age. Circulation 1980; 62:1064-1061.
Teichholz, et al., Problems in echocardiographic volume determinations: echocardiographic-angiographic correlations in the presence or absence of asynergy. Am. J. Cardiol. 1976; 37:7-11.
Hoka, S. “Relationship among the heart, vasculature and blood volume at perioperative period: the influence of volatile anesthetics.” Masui. Jun. 1996; 45(6): 707-16.
Rogers, James. “Cardiovascular Physiology.” Update in Anaesthesia. 1999; Issue 10, Article 2:2-8.
Henry, et al., Echocardiographic Measurements in Normal Subjects From Infancy To Old Age. Circulation 1980; 62:1054-1061.

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