Apparatus and method for outputting electrocardiogram signal and respiration signal

A respiration signal output device for outputting a respiration signal together with an electrocardiogram signal, the respiration signal output device comprising:

• an electrode signal measurement unit configured to measure a signal between at least two electrodes attached to the body of a subject, wherein the measured signal includes an impedance signal;
• a respiration signal generation unit configured to generate a respiration signal of the subject based on the impedance signal;
• an electrocardiogram signal generation unit configured to generate an electrocardiogram signal of the subject based on the impedance signal;
• and
• an output unit configured to output the electrocardiogram signal and the respiration signal,
• wherein the respiration signal generation unit is configured to change the generated respiration signal based on the electrocardiogram signal, and
• wherein the electrocardiogram signal generation unit is configured to change the generated electrocardiogram signal based on the respiration signal.