The work compares the effect of different values of arterial pressure on the clarity of the surgical field in pansinus operation in patients with chronic rhinosinusitis. A secondary goal of the study is to compare circulatory parameters, depth of anaesthesia, near-infrared spectroscopy (NIRS) and consumption of hypotensives.~Null hypothesis: There is no difference in the clarity of the surgical field at various levels of the mean arterial pressure.~This study is being realized in accordance with the Declaration of Helsinki and has been approved by the Ethics Committee of the University Hospital Ostrava (849/2018). According to the statement of the State Institute for Drug Control of 26th April 2019 (reference number Sukl96964/2019), the trial is not considered a clinical trial of medicinal products.~Study type: Single-blind study (the surgeon does not know the value of the patient's blood pressure) prospective study.
The work compares the effect of different various values of arterial blood pressure on the clarity of the surgical field in pansinusoperation in patients with chronic rhinosinusitis.