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Effectiveness of a Peppermint Nasal Inhaler in Reducing Preoperative Anxiety Among Patients Undergoing Degenerative Spine Surgery at Srinagarind Hospital

Effectiveness of a Peppermint Nasal Inhaler in Reducing Preoperative Anxiety Among Patients Undergoing Degenerative Spine Surgery at Srinagarind Hospital

Status
Recruiting
Phases
Early Phase 1
Study type
Interventional
Source
TCTR
Registry ID
TCTR20260208007
Enrollment
76
Registered
2026-02-08
Start date
2025-12-05
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Preoperative anxiety Preoperative anxiety Degenerative spine Peppermint inhaler Peppermint essential oil

Interventions

Participants randomized to the intervention group will receive a peppermint inhaler containing peppermint essential oil The inhaler is a light protected container filled with sterile cotton impregnat
Experimental Other,Placebo Comparator Other
Peppermint Inhaler (Peppermint Essential Oil),Placebo Inhaler

Sponsors

Techita Boonyachai
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1. Adults aged 18 to 80 years 2. Patients scheduled for elective degenerative spine surgery 3. Able to understand and communicate in Thai 4. Willing to participate and provide written informed consent 5. Presence of pain with a Numerical Pain Rating Scale more than or equal to 1

Exclusion criteria

Exclusion criteria: 1. Diagnosed psychiatric disorders including anxiety disorders, depressive disorders, or psychotic disorders 2. Use of anxiolytic medications such as benzodiazepines or propranolol during preoperative preparation 3. History of or current respiratory diseases including asthma, COPD, allergic rhinitis, lung cancer, nasopharyngeal cancer, or active respiratory infection 4. Known intolerance or allergy to peppermint or peppermint-containing products 5. Current smokers or individuals who quit smoking less than 12 months prior to enrollment

Design outcomes

Primary

MeasureTime frame
Preoperative anxiety level Before intervention, immediately after 10 minutes of inhalation, and 30 minutes after intervention State-Trait Anxiety Inventory State Anxiety STAI form Y1

Secondary

MeasureTime frame
Physiological anxiety parameters Before intervention, immediately after 10 minutes of inhalation, and 30 minutes after intervention Heart rate, blood pressure, and respiratory rate,Preoperative pain level Before intervention, immediately after 10 minutes of inhalation, and 30 minutes after intervention Numerical Pain Rating Scale,Preoperative anxiety and information requirement Before intervention Amsterdam Preoperative Anxiety and Information Scale (APAIS),Trait anxiety level Before intervention State-Trait Anxiety Inventory Trait Anxiety STAI form Y2

Countries

Thailand

Contacts

Public ContactTechita Boonyachai

Khonkaen University

techibo@kku.ac.th043363027

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 10, 2026