4. Discussion 
neurological deficits, ONSD, SAD
COMPLICATION, COMPLICATIONS
In our study, when they were inserted into adult patients with normal airways, the effects of the pLMA, sLMA, and I-gel on hemodynamic responses and ONSD values were similar. In all three groups, the HR and MAP values measured 1 min after SAD insertion were similar to each other, and in the intragroup comparisons, these values were higher than those measured at the other measurement times. In the intragroup comparisons, it was also observed that ONSD values had a tendency to increase 1 min after SAD insertion in all three groups and return to baseline values afterward.In recent years, noninvasive ICP monitoring methods have become more popular. This is because they have fewer complications compared with invasive methods, are cost-effective, and reduce the need for certain factors, such as expertise in neurosurgery, that require some invasive measurement methods. Ideally, a noninvasive ICP assessment method must be accurate, reliable, pathology-independent, and capable of working in a heterogeneous patient population; use instantly available equipment; and be robust in relation to methodical variations, such as the experience of the operator [The ONSD measurement is subject to error and variation because it is observer dependent. Nevertheless, as the measurement methodology is well-standardized, and the results are repeatable, the variability in ONSD measurement can be minimized [In recent years, ONSD measurements have also been included in anesthesiology practices [Supraglottic airway devices are easy to use and atraumatic, and they create minimal somatic and autonomic responses. HR and MAP values increase during insertion and removal, but these differences are lower compared with those in tracheal intubation and extubation [For the immobilization of patients, their hemodynamic stability, and the early diagnosis and treatment of neurological deficits in endovascular treatments (EVT), practitioners have started to use SADs in anesthesia management. It has been stated that these devices, which are used in EVT to prevent hemodynamic instabilities associated with intubation and extubation, can be a safe alternative in anesthesia management, and there is no complication associated with their usage [The literature on SADs is vast, and varying results have been reported on their insertion success rates and times. The main factors that could have affected these results in the methodologies of previous studies have been reported as the experience levels of practitioners and differences in the use of muscle relaxants [