Medical system, apparatus and method

A method of computing a multi-parameter index value indicative of a pulmonary condition of a patient, said method comprising:

• receiving two or more non-invasively measured patient parameters, wherein the two or more non-invasively measured patient parameters originating from one or more sensing devices, the two or more non-invasively measured patient parameters including a CO2 related parameter and one or more measured parameters selected from the group consisting of:
• a CO2 related parameter, respiration rate, an O2 related parameter, heart rate, an electrocardiogram (ECG), an encephalogram (EEG), blood pressure, spirometry, or any combination thereof, and the CO2 related parameter is obtained from a breath sample;
• characterizing a first of said two or more non-invasively measured patient parameters based on a comparison of the first non-invasively measured patient parameter against a first reference value, the first reference value is representative of a known range and/or pattern of the first non-invasively measured patient parameter;
• characterizing a second of said two or more non-invasively measured patient parameter based on a comparison of the second non-invasively measured patient parameter against a second reference value, the second reference value is representative of a known range and/or pattern of the second non-invasively measured patient parameter and the second non-invasively measured patient parameter is different from the first non-invasively measured patient parameter;
• and
• computing the index value based on an integrative analysis of values associated with each of the characterized first and second non-invasively measured patient parameters, wherein a weighting factor applied to the value associated with the second characterized non-invasively measured parameter is influenced by the characterization of the first non-invasively measured patient parameter.