Method and Apparatus for Monitoring the Autonomous Nervous System of a Sedated Patient

a technology of autonomous nervous system and monitoring method, applied in the field of medical technology, can solve the problems of prior art solution not providing indications of pain/discomfort and awakening simultaneously, and does not provide an indication of lack of hypnotics due to awakening
US20090229171A9Active Publication Date: 2009-09-17MED STORM INNOVATION
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Patent Information

Authority / Receiving Office
US ยท United States
Patent Type
Applications(United States)
Current Assignee / Owner
MED STORM INNOVATION
Publication Date
2009-09-17

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Abstract

The invention relates to a method and an apparatus for monitoring the autonomous nervous system of a sedated patient. According to the method, skin conductance is measured through a time interval. Average skin conductance values and the number of fluctuation peaks are in the interval are calculated and analyzed, and an indication is given of the state of pain / discomfort in the patient as well as the state of awakening in the patient. The invention is particularly applicable for use with anaesthetized or artificially ventilated patents, as separate output signals are automatically provided, indicating the need for analgesics and hypnotics, respectively.
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Description

TECHNICAL FIELD

[0001] The invention relates in general to medical technology, and in particular to a method and an apparatus for monitoring the autonomous nervous system of a sedated patient. More specifically, the invention relates to a method and an apparatus for concurrently indicating the possible state of pain / discomfort and the possible state of awakening of a sedated patient, based on measurements of the patient's skin conductance. BACKGROUND OF THE INVENTION

[0002] In the field of medical technology there is a problem in producing physical measurements representing the activity in an individual's autonomous nervous system, i.e. in the part of the nervous system, which is beyond the control of the will. Particularly, there is a special need to monitor the autonomous nervous system of a sedated, non-verbal patient, e.g. a patient in anaesthesia or an artificially ventilated patient, in order to detect if the patient needs more analgesics due to pain / discomfort stimuli or hypn...

Claims

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