Method for the diagnosis of preterm birth

Details Method for the diagnosis of preterm birth Method for the diagnosis of preterm birth

1995-05-08

1997-09-30

Kamm, William E.

Surgery

Truss

Pad

128691, 128775, 128672, 607902, A61B 50205

Patent

active

056717490

ABSTRACT:
A method for the diagnosis of preterm labor, and in particular for distinguishing between false labor and true labor, which includes both prelabor and active labor, is disclosed. The onset of a contraction is determined and the change in value of the rapid ejection time (RET) is determined from the onset of the contraction to a point of time just below the peak intensity of the contraction. A level value of the RET as the contraction proceeds is indicative of false preterm labor. An increasing value of the RET is indicative of prelabor. A decreasing value of the RET is indicative of active labor. The cutaneous blood pressure pattern (cPP) of the patient, which should be concordant with the slope of the RET, can be used as a check on the reliability of the apparatus.

REFERENCES:
patent: 4967761 (1990-11-01), Nathanielsz
patent: 4993422 (1991-02-01), Hon et al.
patent: 5069218 (1991-12-01), Ikeda
patent: 5373852 (1994-12-01), Harrison et al.

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