Abstract: The invention concerns a portable medical diagnostic apparatus which includes three types of data-gathering instruments: (1) visual instruments (eg, otoscope, ophthalmoscope, rhino-laryngoscope, macro lens and fundus camera); (2) an audio instrument (eg, electronic stethoscope); and (3) data-gathering instruments (eg, pulse oximeter and ECG monitor). A video camera generates signals, based on images taken from the visual instruments. Other electronic circuitry generates signals based on output of the audio instrument and data-gathering instruments. The signals are transmitted to a remote site for analysis by medical personnel.