Method and apparatus for monitoring haemodynamic function
First Claim
1. A method of monitoring a haemodynamic function of one of a human and animal subject to facilitate application of an anaesthetic dose to the subject, the method comprising the step of:
- monitoring blood flow in one of a peripheral blood vessel and a tissue bed;
generating an indication of changes in the monitored blood flow in one of peripheral blood vessel and as a cardiac output; and
varying administration of the anaesthetic dose to the subject based upon the cardiac output.
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Abstract
The present invention relates to a method and apparatus for monitoring haemodynamic function in animals and humans during anaesthesia and surgery. During anaesthesia and surgery the subject'"'"'s haemodynamic, respiratory, neuromuscular and neurological functions are monitored as indicators of the condition of the health of the subject. Commonly, variations in blood pressure are used to imply corresponding variations in cardiac output, i.e. good blood pressure equals good cardiac output. The present invention utilizes a device to monitor changes of blood flow in peripheral blood vessels of the subject as an indicator of cardiac output. This is believed to provide a much more accurate indicator.
150 Citations
32 Claims
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1. A method of monitoring a haemodynamic function of one of a human and animal subject to facilitate application of an anaesthetic dose to the subject, the method comprising the step of:
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monitoring blood flow in one of a peripheral blood vessel and a tissue bed;
generating an indication of changes in the monitored blood flow in one of peripheral blood vessel and as a cardiac output; and
varying administration of the anaesthetic dose to the subject based upon the cardiac output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A device for monitoring haemodynamic function in one of a human and animal subject to facilitate application of an anaesthetic dose to the subject, the device comprising;
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a blood flow for monitoring changes in blood flow of one of a peripheral vessel and tissue bed, the blood flow monitor including a mechanism to provide an indication of changes in cardiac output; and
means for indicating, upon the cardiac output, that a variation of the anaesthetic dose to the subject is required. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification