Patient monitoring equipment, probe for use therewith, and metho

Details Patient monitoring equipment, probe for use therewith, and metho Patient monitoring equipment, probe for use therewith, and metho

1981-10-23

1985-03-05

Kamm, William E.

Surgery

Truss

Pad

D61B 510

Patent

active

045024901

ABSTRACT:
A method of monitoring the depth of anaesthesia of a patient, comprising stimulating contractions in the oesophagus of the patient, for example using an inflatable oesophageal balloon, obtaining signals indicative of the oesophageal contractions using a sensor, and deriving from the signals an output indicative of the rate of occurrence of signals having a magnitude greater than a preset threshold value, and apparatus for carrying out the method.
An alternative aspect comprises assigning a score value to each of a plurality of different bodily functions of a patient, for example heart rate, blood pressure, degree of sweating, and formation of tears, the said score values being indicative of a depth of anaesthesia or sedation, summing the score values, and producing an output from the summed score values indicative of the amount of anaesthetic to be fed to the patient.

REFERENCES:
patent: 3171892 (1965-03-01), Pantle
patent: 3898983 (1975-08-01), Elam
patent: 4214593 (1980-07-01), Imbruce et al.
patent: 4231255 (1980-11-01), Haski et al.
patent: 4235242 (1980-11-01), Howson et al.
Ask et al., "Medical & Biological Engineering and Computing " vol. 19, No. 4, Jul. 1981, pp. 501-503.

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