The psychiatric liaison nurse in the general hospital: three models of practice.

The creation and implementation of the role of the psychiatric liaison nurse in three general hospitals are described. The historical evolution and theoretical bases of the role are reviewed, as well as the specific reasons for creation of such a role in each of the three hospitals. Three typical patient consultations by liaison nurses illustrate the need for provision of such services within the general hospital. Similarities in the implementation of the role of liaison nurse in the three hospitals are discussed.