1. An apparatus for monitoring the medical condition of a patient, said apparatus comprising: a monitoring device which during use monitors one or more clinical features of the patient; a predictive instrument arranged to receive output from the monitoring device and programmed to compute a probability of a medical outcome or diagnosis based on the monitored one or more clinical features, said predictive instrument further programmed to compute said probability by executing an algorithm which models said medical outcome or diagnosis; and an interface through which a user enters information characterizing the patient, wherein said predictive instrument is further programmed to request said algorithm from a remote location.