Surgery – Truss – Pad
Patent
1982-03-22
1983-11-29
Howell, Kyle L.
Surgery
Truss
Pad
A61B 502
Patent
active
044175884
ABSTRACT:
A cardiac output computer which measures cardiac output by the indicator method involving the estimation of the area under either a thermodilution of a luminous transmission curve with automatic bolus detection. Evaluation of the area under the curve is made relative to a true baseline and is independent of, in the case of thermodilution, blood temperature as of the time the bolus is injected into the patient. A series of blood temperature samples are read and stored with the magnitude of each successive signal compared to the one received immediately before. As soon as a plurality of successive comparisons, preferably five, of six successively acquired blood temperatures indicate monotonically decreasing blood temperature values, a test for monotonicity is confirmed, with the highest temperature of the six being designated as the baseline. Once the test is confirmed the computer proceeds to evaluate the area under the curve.
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patent: 4015593 (1977-04-01), Elings et al.
patent: 4273136 (1981-06-01), Kubo et al.
patent: 4361049 (1982-11-01), Volgyesi
Devi, V. L. et al., "A Processing System for Automatic On-Line LVET Determination," Conf: Proc. of IFIP-IMIA Conf., Rome, Italy, Feb. 6-8, 1980, pp. 167-173.
Houghton Richard B.
Lentz David J.
Critikon Inc.
Howell Kyle L.
Jaworski Francis J.
Kaufman Michael A.
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