A system evaluates a patient for a physiological abnormality. A urinary catheter is insertable within a patient's bladder and has a first pressure sensor for measuring bladder pressure and a second pressure sensor for measuring mid-urethral pressure at the mid-urethral sphincter. A processing device is connected to the first and second pressure sensors and configured to receive the measured bladder pressure and measured mid-urethral pressure during at least one breath cycle and process the data representative of the bladder and mid-urethral pressures obtained during the at least one breath cycle to diagnose a physiological abnormality within the patient.