This study will pilot a Comprehensive Transition Programme (CTP) to support nurses who move into first-line nurse manager (FLNM) roles at Clínica Universidad de Navarra. The transition to frontline management can be challenging and is linked to uncertainty, workload stress, and role ambiguity. The CTP was co-designed with clinical nurses, FLNMs, nursing directors and chief nursing officers using experience-based co-design methods so that its content fits the organisation's practice model and priorities.

The programme combines classroom training, online learning, mentorship, and structured reflective practice. Participants complete brief assessments before and after the programme. The primary focus is to see whether leadership practices improve; we will also examine feasibility and acceptability to inform future refinement.

This pilot uses a simple pre-post design with data collected at baseline and immediately after the programme. Findings will be used to optimise the CTP and to guide broader implementation in the health system.

(Eligibility, outcomes, dates and intervention components are detailed in their specific sections of this record.)

Rationale and aim. The move from bedside nursing to first-line nurse management is a critical career transition that requires new leadership, managerial and relational capabilities. In response, a multicomponent Comprehensive Transition Programme (CTP) was co-designed with stakeholders across organisational levels using experience-based co-design. The aim of this pilot is to generate preliminary evidence on usefulness and feasibility and to explore changes in leadership practices among novice FLNMs.

Design overview. Single-group, pre-post mixed-methods pilot conducted at a tertiary university hospital. Data are collected at two timepoints: baseline (prior to programme start) and immediately post-intervention. The primary outcome is change in leadership practices; additional indicators include acceptability, fidelity and qualitative insights from reflective narratives.

(Primary/secondary outcome measures, time frames and sample size appear in the Outcomes and Enrollment fields.)

Participants. Eligible participants are nurses on the institutional pathway to frontline management, including (a) clinical nurses with responsibility roles not yet formally appointed as supervisors; (b) FLNMs with <5 years' experience at the institution; and (c) FLNMs with prior experience elsewhere recently appointed at the institution. Participation is voluntary with written informed consent.

(Full inclusion/exclusion criteria are provided in the Eligibility section.)

Intervention (overview). The CTP is delivered over approximately three months and integrates:

Structured training on leadership and team management, care quality and improvement, communication, quality standards, and human resources/finance;

Mentorship by experienced nurse managers;

Online learning to reinforce key skills;

Reflective practice through guided narrative work and peer discussion. Delivery follows a common syllabus and mentoring framework to support consistency across participants.

(Specific components and any materials/providers are listed under Arms/Interventions.)

Implementation and fidelity. Standardised session objectives, shared teaching materials, common mentoring guidelines, and written instructions for reflective activities are used to promote consistency. Attendance and completion of activities are monitored as feasibility/fidelity indicators.

Data collection and analysis. Quantitative data are analysed descriptively and for pre-post change in leadership practices. Qualitative reflective narratives are appraised with a structured rubric and thematically analysed to capture perceived learning, role adjustment and relational practice. Integration of quantitative and qualitative strands supports interpretation of preliminary efficacy and feasibility.

(Instruments and time frames are specified in Outcome Measures.)

Ethics and data protection. The study has prior approval from the institutional Research Ethics Committee. All participants provide informed consent. Procedures follow applicable regulations for confidentiality and data protection.

Expected contribution. Results will inform refinements to content, sequencing and delivery of the CTP and support planning for a larger-scale evaluation and potential scale-up across services.

Inclusion Criteria:

• Clinical nurses with responsibility roles at Clínica Universidad de Navarra (CUN) but not yet formally appointed as supervisors.
• First-Line Nurse Managers (FLNMs) with less than five years of managerial experience in the CUN.
• FLNMs with more than five years of managerial experience acquired mainly in other institutions but recently appointed as first-line managers at the CUN.
• Ability to understand and provide informed consent.

Exclusion Criteria:

• Nurses with more than five years of continuous experience as FLNMs at the CUN.
• Nurses in middle or executive management roles (e.g., area directors, chief nursing officers).
• Clinical nurses without any responsibility or leadership role.
• Inability or unwillingness to provide informed consent.