The aim of this study is to compare the preoperative and postoperative ultrasonographic measurements of patients undergoing in the prone position and the change in upper airway edema. The secondary aim of the study is to investigate the relationship between OSAS risk levels determined by the STOP-BANG score in the preoperative period of the patients participating in the study, and airway ultrasound measurements and postoperative critical respiratory events in the preoperative and postoperative period.
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Preoperative Tongue thickness
Timeframe: Baseline, preoperative
postoperative Tongue thickness1
Timeframe: postextubation
postoperative Tongue thickness2
Timeframe: postoperative 2. hour]
preoperative Tongue volume
Timeframe: Baseline, preoperative
postoperative Tongue volume1
Timeframe: postextubation
postoperative Tongue volume2
Timeframe: postoperative 2. hour
Preoperative Lateral parapharyngeal wall thickness
Timeframe: Baseline, preoperative
postoperative Lateral parapharyngeal wall thickness1
Timeframe: postextubation
postoperative Lateral parapharyngeal wall thickness2
Timeframe: postoperative 2. hour
Critical respiratory events
Timeframe: Within postoperative 2 hours