MOTHERS AND THEIR INFANTS CO-ADMITTED TO A NEWLY DEVELOPED MOTHER-BABY UNIT: CHARACTERISTICS AND OUTCOMES.

Research on Mother-Baby Units (MBUs) has mainly focused on maternal psychiatric outcomes, not the well-being of infants. This study investigated infant development and mental health along with maternal characteristics and the mother-infant relationship in 45 dyads (60% New Zealand European, 20% Māori, 11% Pacific) admitted to a new MBU. Maternal psychopathology was measured with the Health of the Nations Outcome Scale (HoNOS, J.K Wing et al., 1998) and Global Assessment of Functioning (GAF; I.M. Aas, 2010). The Parent-Infant Relationship Global Assessment Scale (PIR-GAS, Zero to Three, 2005) measured the mother-infant relationship. Infant measures included Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood (Zero to Three Press, 2005) and the Ages & Stages-3 (J. Squires, E. Twombly, D. Bricker, & L. Potter, 2009). Maternal mental illness and functioning improved during the admission and were positively associated with longer inpatient duration and no illicit substance use. Well-being of the infants was concerning. In addition to lower birth weights and poorer health status, at discharge 51% were lagging behind developmentally, and 51% were exhibiting signs of infant mental health concerns. Relationally, 67% of mother-infant dyads had features of, and 29% met criteria for, a disordered relationship. Poorer mother-infant relationships were associated with a maternal diagnosis of schizophrenia or bipolar disorder, use of the Mental Health Act, leaving the MBU early, limited social support, and infant mental health diagnosis.