6 target point error (TPE) and the entry point error (EPE). All clinical data, the learning curve, and the influence of the trajectory angle on targeting accuracy were measured and evaluated. The application accuracy of the RONNA system for the TPE was 1.95 ± 1.11 mm, while for the EPE was 1.42 ± 0.74 mm. In our cohort, only one pathohistological diagnosis was inconclusive; thus, the total diagnostic yield was 96.87%. Linear regression showed statistical significance between the TPE and EPE and the angle of the trajectory on the bone (p=0.026, p=0.010). The learning curve analysis showed statistical significance, especially for one neurosurgeon who performed most of the procedures (p<0.001). The operation duration was significantly reduced over time, as shown by comparing the first ten procedures with the last ten procedures (p=0.0007). We also used RONNA G4 for cyst evacuation and ventricular drainage placement. The RONNA G4 robotic system is a precise and highly accurate autonomous neurosurgical assistant for performing frameless brain biopsies. In the future we plan to perform other neurosurgical operation such as deep brain stimulation, stereo EEG implantation and navigation to deep located intracranial lesions. Symposia: Leadership skills: Shift the focus on resilience IS06 Ways to strengthen the OR nurses´ resilience in their role as leaders in the OR nursing context K. Falk-Brynhildsen1 1Örebro University, Faculty of Medicine and Health, Örebro, Sweden The OR nurse’s competence is indispensable for ensuring patient safety during surgery. They are also expected to manage demanding situations by using diverse strategies to restore patient safety and they must be prepared to make quick decisions. The OR nursing profession includes knowledge of both technical and non-technical skills and participation in the surgical teamwork. There are however several areas for which OR nurses possess specialist knowledge and skills and therefore they have special responsibilities. Such an area is the prevention of postoperative surgical site infections. The OR nurse also guarantees a hygienic and aseptic environment throughout the operation by creating a safe and sterile working surface. To demonstrate leadership in the surgical team and to stand up for the patient using the application of different knowledge and skills can be challenging given the demands imposed by the requirement of evidence-based practice. This complex vocational role can lead to a lot of pressure and it can affect the OR nurse’s resilience in putting the patient at the centre. What can be done to strengthen the resilience of the OR nurse? IS07 Operating theatre: leadership at the service of performance S. Toussaint1 1Hospital Center Verdun/Saint-Mihiel, France Hospital reforms and current health policies are leading operating theatre organisations to evolve in a logic of increasing rationalisation. Subject to management indicators, the surgical activity cannot be improvised, at a time of efficiency and productivity where quality and safety of care must be guaranteed to the persons treated. Exercising managerial functions at the heart of an operating theatre, with these performance objectives, suggests strong personal and professional qualities to build a cooperative advantage. Leadership, adapted to the situation, is one of the keys to success with an appropriate situational approach where effective communication, trust and dynamism are undeniable advantages for the health actors making up the multidisciplinary wealth. The block manager is an actor, pilot and conductor of a collective with strong individualities in an environment where power issues are high. The managerial strategies exercised in a participatory logic allow to conduct the operational activity by mobilising each actor. The guarantee of its mission is individual but also institutional by building governance with shared responsibilities. 10th EORNA Congress Stavanger, Norway | 12 - 15 May 2022 Symposia - Invited speakers
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