Evaluation of Recruitment Effectiveness in Patients With Obstructive Sleep Apnea Syndrome Using Lung Ultrasound

The registry criteria, word for word

Check if you might fit

Answer for yourself. This is not a decision: only the study team can say whether you can take part.

• Are you between 18 and 65 years old?YesNo

What the trial wants to find out

Patients with obstructive sleep apnea syndrome are at higher risk for respiratory complications after surgery. Oxygen depletion and respiratory distress are common in patients with obstructive sleep apnea syndrome. In this study, the effectiveness of the recruitment maneuver applied in the postoperative period will be investigated via lung ultrasound. Recruitment is a technique performed to improve the oxygen levels of patients. Patients diagnosed with obstructive sleep apnea syndrome between the ages of 18-65 will be included in the study and anesthesia and surgical procedures will be followed. The aim of the study is to compare the pulmonary complication rates between patients who underwent recruitment and those who did not, and to examine the effects of factors such as age and gender on these complications via lung ultrasound.

The 3 groups in the trial

• Group 1- controlNo study treatment, for comparison

  The patient will be ventilated throughout the surgery by applying 5 cmH2O post expiratory positive end-expiratory pressure. Lung ultrasound will be performed on the patients before surgery, 5 minutes after mechanical ventilation after orotracheal intubation, at the end of surgery and 5 minutes after extubation. The lung will be evaluated in 8 regions. These will be evaluated as upper and lower in the mid-clavicular line, upper and lower in the anterior axillary line, upper and lower in the posterior axillary line and Plaps point. It will be evaluated by calculating the modified Lung Ultrasound Score (LUSS) to detect ventilation loss. Higher scores in LUSS indicate more severe ventilation loss. The degree of deaeration will be evaluated between 0 and 3. , 0 less than 3 B line; ≥3 B lines indicate 1, greater than 5 and confluent B lines indicate 2, and multiple confluent B lines or multiple subpleural consolidations separated by a thickened or irregular pleural line indicate 3.

• Group 2Existing treatment, for comparison

  The ventilation strategy of the patients in this group will be the same as in group 1. In contrast, just before extubation, the patients in this group will be given 6 breaths with a tidal volume of 2 times the vital capacity, an inspiratory/expiratory ratio of 1/1 and a lung plateau pressure of \< 35 cmH2O, and a recruitment maneuver will be performed at the end of the surgery. All patients will undergo lung ultrasound in the defined lung zones and at the specified times, as described in group 1, and a modified Lung Ultrasound score will be evaluated.

  Treatment: Lung Recruitment Maneuver

• Group 3Existing treatment, for comparison

  The ventilation strategy of the patients in this group will be the same as in group 1. In addition to positive end-expiratory pressure, the patient will be placed in the right and then left lateral decubitus position before extubation at the end of the surgery and a recruitment maneuver will be performed by giving 6 breaths in each position with a tidal volume twice the vital capacity, a 1/1 inspiratory/expiratory ratio and a lung plateau pressure \< 35 cmH2O. All patients will undergo lung ultrasound in defined lung regions and at specified times, as defined in group 1, and a modified Lung Ultrasound score will be evaluated.

  Treatment: Positional Lung Recruitment Maneuver