1. A system for patient signal analysis, comprising: a patient monitor that acquires a patient signal data waveform from a patient; a medical treatment device that provides treatment to the patient; and a computer system communicatively coupled to the patient monitor and the medical treatment device, wherein the computer system includes a non-transitory memory device for storing computer readable program code, and a processor in communication with the memory device, the processor being operative with the computer readable program code to perform steps including generating a set of vectors directed from a common center on the patient signal data waveform to points of interest on the patient signal data waveform, extracting one or more vector parameters from the vectors, determining one or more vector ratios based on the one or more vector parameters to monitor changes in the patient signal data waveform, determining one or more control parameters based on the one or more vector ratios, and controlling the medical treatment device by applying the control parameters.