Arterial pressure-based, automatic determination of a cardiovascular parameter

A method for determining cardiac stroke volume comprising:

• sensing an input signal that indicates arterial blood pressure of a subject;
• calculating the standard deviation and kurtosis of the input signal;
• determining an arterial compliance value of the subject;
• computing an estimate of stroke volume as a function of the product of the standard deviation and the arterial compliance value, as well as of an offset factor that is proportional to the kurtosis.

A system for determining a cardiovascular parameter of a subject comprising:

• a monitoring system sensing an input signal that indicates arterial blood pressure and including a processing system including:
• a moment-calculating module comprising computer-executable code for calculating at least one statistical moment of a first function of the input signal having an order of two or higher;
• and
• an estimation module comprising computer-executable code for estimating the cardiovascular parameter as a second function of at least one statistical moment of a first function of the input signal having an order greater than one.

A system for determining cardiac stroke volume comprising:

• a processing system sensing an input signal that indicates arterial blood pressure of a subject;
• a moment-calculating module comprising computer-executable code for calculating the standard deviation and kurtosis of the input signal;
• an estimation module for comprising computer-executable code for determining an arterial compliance value of the subject;
• and for computing an estimate of stroke volume as a function of the product of the standard deviation and the arterial compliance value, as well as of an offset factor that is proportional to the Kurtosis.