A vital signs monitor comprising a housing (12, figure 1)； a power supply 37； a plurality of measurement modules within the housing, each module being operable to measure and monitor at least one respective vital sign； one or more inputs for connection to sensors applied to a patient and arranged to supply sensor signals to respective measurement modules； and a user display 14a. In embodiments the vital signs monitor may be hand-held, or alternatively it may be a hand or wrist strap based monitor. The vital signs monitor may measure pulse, blood pressure, temperature, tympanic temperature, electrocardiogram (ECG), respiration, pulse oximetry and capnography.
