ClinicalTrials.gg
RecruitingNCT07771205Updated Aug 18, 2026

Aromatherapy and Its Impact on Preoperative Anxiety, Postoperative Pain, and Patient Experience

An interventional study of Aromatherapy and Unscented Pod in Postoperative Pain, Preoperative Anxiety and Patient Experience, sponsored by Kaiser Permanente. Recruiting at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-18.

Sponsored by Kaiser Permanente · Not applicable, Interventional, and Supportive care

From the registry’s dates

  • Started Jul 2026; still recruiting 4 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
286
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 1,180 studies in Pain, Postoperative with a site in United States — 204 open to participants now, 237 under way, 26 of them phase 3. Pain, Postoperative · United States.

Planned enrollment
100th of 1,098
286 · median 76
Started
2026
with 67 others
No phase
373 of 1,180
68 open now
Primary completion
2028-01
later than 192 of 236 live
Registered
1,159th of 1,180
by date

Among the 1,180 studies in Pain, Postoperative with a site in United States, this one is the 100th largest by planned enrollment of the 1,098 interventional ones that give a count, is one of 68 that started in 2026, is one of 373 with no phase, reaches primary completion later than 192 of the 236 other live ones, and was the 1,159th registered.

Pain, Postoperative

5,644 studies on the registry are indexed under Pain, Postoperative; 1,229 are open to participants now.

Browse Pain, Postoperative studies →

Open to participants now

204 of the 1,180 studies in Pain, Postoperative with a site in United States are open now. Recruiting first, the newest first:

198 more — sign in →

All 204 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 678 Pain, Postoperative studies recruiting now, 241 (36%) set no upper age limit and 328 (48%) stop at 75 or younger; 74 take children under 18; 128 take healthy volunteers.

This study: 18 Years and older · all sexes · healthy volunteers too.

The full table on the hub →

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02

Study summary

Aromatherapy's Impact on Preoperative Anxiety, Postoperative Pain, and Patient Experience

Introduction:

Surgery often results in increased levels of anxiety and postoperative pain. Postoperative pain relief is typically treated with opioids. However, evidence shows that treatment with opioids alone is often insufficient to provide adequate levels of pain relief and can contribute to the growing opioid crisis. Alternative pain management strategies that combine narcotic medication with complementary therapies can improve comfort as well as decrease preoperative anxiety. Aromatherapy is an evidence-based complementary therapy used to decrease preoperative anxiety and postoperative pain that has been underutilized in ambulatory surgical centers. This study aimed to evaluate the impact Aromatherapy has as an anxiety and pain management strategy. Subsequently, evidence also supports that improving the patient experience can lead to better surgical outcomes.

Study Aim:

This study will examine the effect that aromatherapy has on preoperative anxiety, postoperative pain and patient experience

Study Question(s):

In perioperative patients at Kaiser Stockton Ambulatory Surgery Unit, how does aromatherapy, compared with standard practice, affect preoperative anxiety?

In perioperative patients at Kaiser Stockton Ambulatory Surgery Unit, how does aromatherapy, compared with standard practice, affect postoperative pain?

In perioperative patients at Kaiser Stockton Ambulatory Surgery Unit, how does aromatherapy, compared with standard practice, affect patient experience?

Study Method: Prospective Experimental Randomized Control Clinical Trial

Study Duration: 18 months

Study Process: The participants will be recruited through their Pre-surgery interview, at which time a brief explanation will be given on aromatherapy, its potential to reduce preoperative anxiety and postoperative pain, and increase the patient experience. The study design and protocol will also be described. Should the participants elect to participate in this study, they will be randomly assigned using a computer program. Upon arrival for surgery, informed consent will be obtained. Anxiety and pain will be assessed for pre- and post- intervention and just before transferring to the operating room (OR). Upon arrival to the Post-Anesthesia Care Unit (PACU), pain will be assessed in 15-minute intervals until discharge. Anxiety will be reassessed at discharge. Experience will be assessed 2 weeks after discharge.

Data Analysis:

A one-way Multivariate Analysis of Variance (MANOVA) will be used to assess the impact of aromatherapy on pain, anxiety, and satisfaction.

Conclusions:

This study aims to add to the body of knowledge of how the incorporation of aromatherapy can impact patient outcomes.

03

Conditions studied

  • Postoperative Pain
  • Preoperative Anxiety
  • Patient Experience

Keywords

  • Preoperative anxiety
  • surgery
  • anxiety
  • pain
  • postoperative pain
  • ambulatory
  • experience
  • patient experience
  • aromatherapy
  • complementary alternative medicine
  • nurse-led
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Able to speak, read, understand, and write in English or Spanish
  • Undergoing a surgical procedure under general anesthesia
  • Able to provide independently

Exclusion criteria

Exclusion Criteria:

  • Cataract and other ocular surgeries
  • Allergies to aromatherapy ingredients
  • Chronic pain management
  • Olfactory deficits
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
286 participants (estimated)

Study arms

  • Active comparator
    Scented Aromatherapy Pod

    Aromatherapy Pod

    Other: Aromatherapy

  • Placebo comparator
    Unscented Aromatherapy Pod

    Unscented Pod

    Other: Unscented Pod

Interventions

  • OtherAromatherapy

    An aromatherapy pod with the blend of Lavendar and Sweet Orange, which has been identified as aiding with stress, pain, and anxiety.

  • OtherUnscented Pod

    An unscented "aromatherapy" pod that looks identical to the active intervention.

06

What researchers measure

Primary outcomes

  1. Preoperative Anxiety

    Assessed using the Preoperative Anxiety Scale-7. This is a 7 question 5-point Likert scale with the values of 0 to 4, 0 being no anxiety and 4 being the highest anxiety. There are a possible total of 28 points, which would be assessed as the highest level of anxiety measurement possible. The lowest possible is 0.

    Time frame: Prior to the intervention, the participant will assess their baseline anxiety using the Preoperative Anxiety Scale-7, re-evaluated prior to transfer to the OR after intervention is applied, and again at discharge. All on Day 1, date of surgery.

  2. Verbalized Postoperative Pain

    Measured using the Wong-Baker Faces Pain Scale (WB). The WB scale has a low-end value of 0, indicating no pain, and a high-end value of 10, indicating the most pain. WB can be measured in whole numbers from 0-10.

    Time frame: Assessed upon arrival to preop and prior to intervention, for a baseline. Reassessment after intervention and prior to transfer to OR, upon arrival to PACU, 15-minute intervals until ready to discharge, and at discharge. All on Day 1, date of surgery.

  3. Patient Experience

    Patients are asked to evaluate their experience using study-specific designed 5-point Likert scale consisting of 7-8 questions. Questions asked are: "How well was aromatherapy explained?", "How would you rate your overall aromatherapy experience?", "How well did aromatherapy help you to relax before surgery?", How well did aromatherapy help your pain before surgery?" (if pain was present at baseline assessment), "How well did aromatherapy help your pain after surgery?", "How likely are you to continue to use aromatherapy for anxiety management at home?", and "How likely are you to continue to use aromatherapy for anxiety management at home?" The low-end value is 1 and the high-end value is 5. Question 5 will only be asked if preoperative pain was present. There is a minimum of 8 and maximum of 40 for 8 questions (preop pain present), and a minimum of 7 and maximum of 35 for 7 questions (no preop pain present).

    Time frame: 1 week after date of surgery. The questionnaire should take 5- 10 minutes to complete. The patient is called at home by a study nurse.

  4. Non-verbal Postoperative Pain

    Checklist of Non-verbal Pain Indicators (CNPI) scale. The CNPI scale has a low-end value of 0, indicating no pain, and a high-end value of 6, indicating the most pain. This scale assesses for non-verbal characteristics that could identify when pain is present when the patient cannot articulate their pain through WB scale. One point is awarded for each behavior observed with a possible score of 0-6. This scale can also be assessed "at rest" or "with activity".

    Time frame: Assessed upon arrival to preop and prior to intervention, for a baseline. Reassessment after intervention and prior to transfer to OR, upon arrival to PACU, 15-minute intervals until ready to discharge, and at discharge. All on Day 1, date of surgery.

07

Study locations

1 of 1 sites recruiting
  • Kaiser Permanente Stockton Ambulatory Surgery Unit
    Stockton, California 95210, United States
    Recruiting
    • Kristie L Silva, MSN · ContactKristie.L.Taylor@kp.org · 209-476-3002
    • Kristie L Silva, MSN · Principal investigator
    • Stevie Sparrey, MSN · Sub investigator
08

References and documents

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2026 (actual). Primary completion is estimated for Jan 2028, 18 months after the start.

Of 2,094 non-industry interventional studies with no phase under Pain, Postoperative, half reached primary completion within 11 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 23. This study's planned 18 months is above that.

Counting every sponsor, half of 2,107 studies reached it within 11 months; a quarter within 6 and three quarters within 23.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 7, 2026
First posted
Aug 18, 2026
StartActual
Jul 7, 2026
Primary completionEst.
Jan 2028
CompletionEst.
Jan 2028
Last update
Aug 18, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 18, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07771205
Lead sponsor
Kaiser Permanente
Responsible party
Sponsor
First posted
Aug 18, 2026
Start date
Jul 7, 2026
Primary completion
Jan 2028 (estimated)
Completion
Jan 2028 (estimated)
Last update
Aug 18, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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