Consent of all patients will be obtained the night before surgery. Biochemical parameter levels and state trait anxiety scale and apfel risk scale will be recorded.

As it will be difficult for the experimental group to be oriented while giving mouthwash training after the surgery, mouthwash training will be given at a time when it is available the night before the operation. State anxiety scale, visual comparison scale and nausea and vomiting effect scale will be administered before discharge (approximately 48 hours). After discharge, he will continue to gargle in the same way 3 times a day. At the end of the first week, all patients will be called by the researcher and the state anxiety scale, visual comparison scale and nausea and vomiting effect scale shared on the digital environment will be filled and recorded. This process will continue for 4 weeks. In the last measurement, visual comparison scale, nausea vomiting and state trait anxiety scale will also be filled.

Consent of all patients will be obtained the night before surgery. Biochemical parameter levels and state trait anxiety scale and apfel risk scale will be recorded.

The state anxiety scale, visual comparison scale and nausea and vomiting effect scale will be administered to the control group before they are discharged (approximately at the 48th hour). At the end of the first week, all patients will be called by the researcher, and the state anxiety scale, visual comparison scale and nausea and vomiting effect scale will be filled and recorded. This process will continue for 4 weeks. In the last measurement, visual comparison scale, nausea vomiting and state trait anxiety scale will also be filled. At the end of the first month, the biochemical parameters taken during the routine hospital control will be recorded.

The Effect of Peppermint Flavored Mouthwash Applied to Patients in the First 30 Days After Bariatric Surgery on Nausea-Vomiting, Anxiety and Biochemical Parameters

This inventory consists of two separate sections. consists of 40 questions in total. General temperament of the person in 20 questions in the continuous section While the state is evaluated, how the person feels at that moment is evaluated in the state section. Continually Anxiety is an individual's tendency to experience anxiety. State anxiety is the stressful situation in which the individual is It is the subjective fear felt by the situation. While it rises when the stress is intense, the stress In cases where the level of anxiety decreases, the State-Trait Anxiety Inventory score decreases. Inventory While filling, one of the 4 options is preferred; scores are added together and high scores are shows anxiety levels

It is a scale that evaluates the severity of nausea of the participants on a 10-centimeter ruler with "0" on the left end, no nausea at all, and "100" on the right end as the most severe nausea (unbearable nausea).

Laboratory results obtained routinely in the hospital where the study will be conducted will be used.