Patent Document ID: 5584298
Application ID: 08140453
Patent Flag: 1

Claim One:
1. A method of electronically determining cardiac parameters in a human patient in the presence of a regular heart rate pattern, comprising the steps of: a) Providing a computerized heart data collection and analysis apparatus including means for obtaining actual heart rate and blood pressure values for the patient; b) Using the apparatus, obtaining and storing in the computer a set of input parameters including actual heart rate, blood pressure, sex, weight, age and height of the patient; c) Determining a maximum heart rate for the patient based on at least one of said input parameters and calculating a % heart rate based on the actual heart rate and the maximum heart rate; d) Calculating ideal systolic blood pressure and ideal diastolic blood pressure for the patient at the % heart rate; e) Calculating a preliminary ideal stroke volume based on the ideal systolic blood press and the ideal diastolic blood pressure; f) Calculating a preliminary ideal cardiac output value based on the preliminary ideal stroke volume; g) Indexing said preliminary ideal cardiac output value to an ideal body surface area for the patient to obtain a preliminary ideal cardiac index, and adjusting said preliminary ideal cardiac index according to patient age to obtain an ideal cardiac index; h) Calculating actual cardiac stroke volume based on the actual heart rate, blood pressure, and the difference between the ideal cardiac index and preliminary ideal cardiac index; and i) using the computerized heart data collection and analysis apparatus, providing an output to an operator representing the calculated actual cardiac stroke volume.