Final answer:
If a new mother displays prolonged sadness, sleep and eating disturbances, withdrawal, feelings of worthlessness, or difficulty concentrating, and especially thoughts of self-harm, she should be further assessed for postpartum depression.
Step-by-step explanation:
The nurse assessing a client for signs of postpartum depression should be aware that certain observations indicate a need for further assessment. Signs of this condition can include prolonged sadness, sleeping and eating issues, withdrawal from social activities, feelings of hopelessness or worthlessness, loss of interest or pleasure in activities, lower energy levels, and difficulty concentrating.
Additionally, thoughts of self-harm, as reported in the study by Wisner et al. (2013), significantly warrant further evaluation. If the new mother exhibits any of these symptoms, especially if they affect her daily functioning and caring for her newborn, the nurse must consider a follow-up with a mental health professional for a comprehensive assessment and possible intervention.