Cognitive hyperarousal, anxiety, and sleep disturbance are common concerns during the postpartum period, particularly among primiparous mothers, and may negatively affect maternal wellbeing and adaptation to motherhood. Mindfulness-based interventions may help mothers manage distressing thoughts and emotions, reduce anxiety, and improve sleep quality.

To assess the effectiveness of a mindfulness-based intervention on cognitive hyperarousal, anxiety, and sleep disturbance among primiparous postpartum mothers.

A quasi-experimental two-group pretest-posttest design with a follow-up assessment was used.

Postnatal wards and outpatient postnatal clinics of Menofia University Hospital and Shebin El-Kom Teaching Hospital, Menoufia Governorate, Egypt.

Convenience sampling was used to choose 300 postpartum primiparous women who met the inclusion criteria.

Tool I: A structured interview questionnaire to assess personal and obstetrical characteristics; Tool II: cognitive Pre-Sleep Hyperarousal Scale; Tool III: the Postpartum Specific Anxiety Scale; and Tool IV: the Pittsburgh Sleep Quality Index.

The mindfulness-based intervention resulted in significant reductions in cognitive hyperarousal and postpartum anxiety and significant improvement in sleep quality among primiparous postpartum mothers after the intervention compared with their baseline levels (p< 0.001). In addition, a statistically significant relationship was found among cognitive hyperarousal, anxiety, and sleep disturbance following the intervention.

Cognitive hyperarousal and anxiety were