Peppermint Oil for Urinary Retention

Study Overview
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Brief Summary
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A randomized controlled study will be conducted, with two arms. Postpartum women experiencing urinary retention will be randomized into one of the two following arms: Arm 1: Subjects will be exposed to vapor of peppermint oil Arm 2: Subjects will be exposed to vapor of placebo (mineral oil) Outcome variables include resolution of urinary retention, time to spontaneous urination, volume of spontaneous urination, frequency of urinary catheterization, and patient satisfaction.

Detailed Description
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The purpose of the study is to determine if the use of peppermint oil among postpartum women experiencing urinary retention will increase spontaneous urination and decrease the need for catheterization. A randomized controlled study will be conducted, with two arms. Subjects will be randomized into one of the two following arms: Arm 1: Subjects will be exposed to vapor of peppermint oil Arm 2: Subjects will be exposed to vapor of placebo (mineral oil) Outcome variables include resolution of urinary retention, time to spontaneous urination, volume of spontaneous urination, frequency of urinary catheterization, and patient satisfaction.

Official Title
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Evaluating the Use of Peppermint Oil for Postpartum Women With Urinary Retention

Conditions
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Urinary Retention

Intervention / Treatment
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* Other: Peppermint oil vapors
* Other: Mineral Oil


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1. 18 years old or older 2. English speaking 3. Admitted to Bethesda North Mom Baby Unit 4. Postpartum 5. Experiencing urinary retention - defined as meeting at least one of the following criteria: More than 6 hours after delivery or foley catheter removal without being able to spontaneously void Symptomatic urinary retention without being able to spontaneously void Change in fundal height or position without being able to spontaneously void 6. Bladder scan showing bladder containing 400mL or more urine Exclusion Criteria: Allergy to peppermint Asthma Active herpes lesions Seizure disorder Not able to void in toilet (ex: requiring use of bed pan to void)

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Peppermint Oil<br>Subjects will be exposed to vapor of peppermint oil | Other: Peppermint oil vapors<br>* Subjects will be exposed to vapor of peppermint oil<br>|
| Placebo Comparator: Placebo<br>Subjects will be exposed to vapor of placebo (mineral oil) | Other: Mineral Oil<br>* Subjects will be exposed to vapor of placebo (mineral oil)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percent of patients with urinary retention resolved | Urinary retention defined as: More than 6 hours after delivery or foley catheter removal without being able to spontaneously void Symptomatic urinary retention without being able to spontaneously void Change in fundal height or position without being able to spontaneously void More than 6 hours after delivery or foley catheter removal without voiding spontaneously; symptomatic urinary retention without being able to spontaneously void; or change in fundal height or position without being able to spontaneously void Resolution of urinary retention will be achieved if patient spontaneously voids within 10 minutes after exposure to oil | 10 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time to spontaneous urination | Minutes until participant spontaneously voids | 1 hour | 
| Volume of spontaneous urination | Volume of urine when participant spontaneously voids | 1 hour | 
| Incidence of urinary catheterization | Whether participant requires urinary catheterization or not | 1 hour | 
| Patient satisfaction | Patient rated satisfaction | 1 hour | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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peppermint oil, postpartum