Lung US for PEEP Optimization in Robotic Radical Prostatectomy or Cystectomy Patients

Exclusion Criteria

• •BMI more than 40.
• •Moderate to severe obstructive pulmonary disease (FEV1 \< 80% of predicted).
• •Moderate to severe restrictive pulmonary disease (TLC \< 70% of predicted).
• •Severe pulmonary hypertension (mean PAP\>55).
• •Previous lung surgery.
• •Decompensated cardiac disease (NYHA 3 or 4).
• •Patients who received invasive mechanical ventilation within the last 30 days before surgery.