Methods of distinguishing between vasoconstriction and...

Details Methods of distinguishing between vasoconstriction and... Methods of distinguishing between vasoconstriction and...

2005-03-04

2008-10-28

Marmor, II, Charles A. (Department: 3735)

Surgery

Diagnostic testing

Cardiovascular

C600S481000, C600S485000, C600S500000

Reexamination Certificate

active

07442169

ABSTRACT:
The present invention relates to the use of the arterial pressure waveform recorded invasively or non-invasively, to distinguish between compensatory vasoconstriction with low cardiac output on the one hand from vasodilation from more severe organ damage on the other, as a cause of hypotension in acute emergencies. The waveforms may be subjected to harmonic analysis and the moduli of their harmonic components compared whereby a hypotensive individual can be confirmed to have the higher (second and above) greater than the first harmonic is considered as having vasoconstriction as a cause of hypotension.

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International Search Report, Application No. PCT/AU2005/000310 Date of Mailing: May 27, 2005.
International Preliminary Report on Patentability issued by the International Bureau of WIPO in respect of the basic U.S. Application PCT/AU2005/000310 Dated Mar. 4, 2005.

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