The Effects of Two Different Ventilation Strategies on Lung Ventilation: An Ultrasonographic Evaluation.

The Effects of Two Different Ventilation Strategies on Lung Ventilation: An Ultrasonographic Evaluation.

The Effects of Two Different Ventilation Strategies on Lung Ventilation in Patients Undergoing Robotic Radical Prostatectomy: Ultrasonographic Evaluation.

This study will be performed in robotic assisted laparoscopic radical prostatectomy patients in Cerrahpasa Medical Faculty Monoblock Operating Room. Since robot-assisted laparoscopic radical prostatectomy is a surgical procedure which requires long-term mechanical ventilation, excessive trendelenburg position (30-45 °) and pneumoperitoneum; these interventions may lead to respiratory complications such as ventilation difficulty and aeration loss in patients. Nowadays, lung ultrasonography has been used in anesthesia practice and intensive care units in order to determine lung aeration loss. In this study, the investigators aimed to compare the possible aeration loss in lung parenchyma during pressure controlled ventilation and volume controlled ventilation which are frequently used in anesthesia practice in patients undergoing robotic radical prostatectomy.

lung ultrasonography, mechanical ventilation, pressure controlled ventilation, volume controlled ventilation

Patients will be ventilated with a pressure level which supplies a tidal volume corresponding 8ml/kg, 12 breaths per minute, 1/2 inspiration/expiration ratio and %40 Fraction of Inspired Oxygen . These ventilator settings can be changed in order to adjust end tidal carbon dioxide and oxygen saturation levels.

Patients will be ventilated with a tidal volume which corresponds 8ml/kg, 12 breaths per minute, 1/2 inspirastion/expiration ratio and %40 Fraction of Inspired Oxygen . These ventilator settings can be changed in order to adjust end tidal carbon dioxide and oxygen saturation levels.

Lung Ultrasonography will be applied to patients after surgery in the recovery room at T5. Two different groups' LUS scores will be calculated and compared.

Lung Ultrasonography will be applied to patients after intubation. Two different groups' LUS scores will be calculated and compared.

Lung Ultrasonography will be applied to patients at Trendelenburg position after the surgical prosedure is finished. Two different groups' LUS scores will be calculated and compared.

Lung Ultrasonography will be applied to patients at supin position after the surgical prosedure is finished. Two different groups' LUS scores will be calculated and compared.

Since our study will be performed in patients with prostate cancer, all of our patients will be male.

Inclusion Criteria: 18-75 age Patient who will be undergo robot assisted laparoscopic prostatectomy surgery Patient with ASA (American Society of Anesthesiologists) Score 1-3 Exclusion Criteria: Patients with ASA Score above 3 Patients with obstructive (FEV1<%60) or restrictive pulmonary disease (FVC<%60) Patients with intrathoracic operation history Heavy smokers (>25 cigarettes/day)