THE EFFECT OF ALVEOLAR RECRUITMENT MANOEUVRE ON INTRAOPERATIVE HAEMODYNAMICS

Inclusion Criteria: * ASA Class 1-2 patients 18-70 years old Exclusion Criteria: * \<18 y, BMI\>40 * Patients receiving invasive mechanical ventilator support in the last 1 month * Patients who have received chemotherapy or radiotherapy in the last 2 months * Those with severe lung disease (COPD, asthma, pulmonary infection, bronchiectasis, previous need for non-invasive mechanical ventilation, oxygen therapy or steroid therapy for acute attack) * Known severe pulmonary hypertension * Patient refusal to participate in the study * Intracranial tumour * Haemodynamic instability * Shock * Neuromuscular disease * Pathologies causing increased intracranial and intraocular pressure * Atrial fibrillation