Night shifts in intensive care units (ICUs) are associated with significant physical and cognitive fatigue among nurses, which may affect staff well-being and patient safety. Although short naps have been shown to reduce fatigue, their implementation in ICUs remains limited and poorly understood.

This study explored ICU nurses’ and nurse managers’ perceptions of planned napping.

A qualitative descriptive design was used, involving nine focus group interviews (n = 20) across three Finnish ICUs. Data were analysed using inductive content analysis.

Participants described severe fatigue during night shifts and acknowledged the benefits of planned napping, including improved alertness, reduced errors, and enhanced well-being. Informal napping was common, but formal structures were lacking. Barriers included unclear policies, cultural resistance, and logistical challenges; whereas facilitators involved organisational culture, environment, scheduling, and managerial support. Emphasis was placed on fairness, flexibility, and clear protocols.

Planned napping was perceived as a valuable strategy for managing fatigue, but successful implementation requires institutional support and context-sensitive planning. This study provides practical insights into implementing planned napping in high-acuity environments and supports the development of structured, evidence-informed protocols to promote staff well-being, patient safety and sustainable nursing practices.