System and method for generating an adjusted fluid responsiveness metric

A method for monitoring vital signs of a subject, the method comprising:

• receiving, using a sensor port of a medical monitor, sensor type identification data of a photoplethysmograph (PPG) sensor;
• receiving, using the sensor port of the medical monitor, a PPG signal responsive to light absorption by a subject's tissue from the PPG sensor;
• determining, using a processor of the medical monitor, a sensor type of the PPG sensor based on the received sensor type identification data;
• choosing, using the processor of the medical monitor, fluid responsiveness predictor (FRP) at least one calculation setting based on the determined sensor type;
• calculating, using the processor of the medical monitor, an FRP value based on a respiratory variation of the PPG signal, and based on the at least one chosen FRP calculation setting;
• and
• display, using a display of the medical monitor, the FRP value.