An interventional study of Peppermint Oil Vapor and Mineral Oil Vapor in Urinary Retention, sponsored by Mount Carmel Health System. Terminated at 1 site in United States. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-03-05.
Sponsored by Mount Carmel Health System · Not applicable, Interventional, and Treatment
Among 98 studies in Urinary Retention with a site in United States — 13 open to participants now, 18 under way, 1 of them phase 3. Urinary Retention · United States.
Among the 98 studies in Urinary Retention with a site in United States, this one is the 45th largest by enrollment of the 81 interventional ones, is one of 8 that started in 2018, is one of 53 with no phase, and was the 43rd registered.
241 studies on the registry are indexed under Urinary Retention; 44 are open to participants now.
This study's enrollment of 77 is below the median of 90 across 187 interventional studies indexed under Urinary Retention.
Browse Urinary Retention studies →13 of the 98 studies in Urinary Retention with a site in United States are open now, in 1 country. Each count lists the studies.
Of the 31 Urinary Retention studies recruiting now, 23 (74%) set no upper age limit and 5 (16%) stop at 75 or younger; 1 take children under 18; 7 take healthy volunteers.
This study: 18 Years and older · female · healthy volunteers too.
The full table on the hub →98 studies; the count open now beside each. This study's row is marked.
First in 2001; this study’s year is marked. 8 started in 2018.
Median enrollment 88 across the 81 interventional studies, 90 across the 17 observational. Of the 69 that completed or were terminated, 35 (51%) have results posted.
18 of 98 have an industry lead sponsor. The 10 most frequent:
Mount Carmel Health System is the lead sponsor of 12 studies on the registry; none are open to participants now.
Mount Carmel Health System has 1 study filed under Urinary Retention — fewer than ten, so there is no comparison to draw.
8 of the studies in Urinary Retention with a site in United States that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT06179654The Cleveland ClinicPreoperative Pelvic Floor Physical Therapy to Minimize Stress Urinary Incontinence After Holmium Laser Enucleation of the Prostate | 2026-11-30 |
| NCT04597372Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)Impact of Tamsulosin on Post-Operative Urinary Retention Following Pelvic Reconstructive Surgery | 2026-12 |
| NCT05200923MedtronicNeuroPelvic Health Electrically Evoked Recording (PEER) 2 Study | 2026-12-18 |
| NCT07174349Mayo ClinicUroselective Alpha-1-Antagonist to Reduce the Incidence and Duration of Postoperative Urinary Retention Following Spine Surgery | 2027-01-31 |
| NCT06918067Wake Forest University Health SciencesComparison of Urinary Flow Study | 2027-03 |
Among the 98 studies in Urinary Retention with a site in United States, from their registry updates:
The purpose of this study is to examine the effectiveness of peppermint oil to promote voiding and reduce urinary catheterization among postpartum women.
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.
Exclusion Criteria:
Exposure of the perineum to the vapor of the active comparator, 2 ml peppermint oil. The perineum will NOT come into contact with the oil directly.
Other: Peppermint Oil Vapor
Exposure of the perineum to the vapor of the placebo comparator, 2 ml mineral oil. The perineum will NOT come into contact with the oil directly.
Other: Mineral Oil Vapor
2ml of the oil will be placed in the urine collection "hat" that fits into the bowl of the toilet. Participants will then sit on the toilet in normal fashion, exposing their perineum to the vapor of the oil. The perineum will NOT come into contact with the oil directly - only the vapor from the oil will contact the perineum.
2ml of the mineral oil will be placed in the urine collection "hat" that fits into the bowl of the toilet. Participants will then sit on the toilet in normal fashion, exposing their perineum to the vapor of the oil. The perineum will NOT come into contact with the oil directly - only the vapor from the oil will contact the perineum.
Resolution of Postpartum Urinary Retention
Spontaneous bladder voiding of at least 150 milliliters
Time frame: within 10 minutes after administering study intervention
Time to resolution of urinary retention
Time to resolution of postpartum urinary retention, defined as time from either 6 hours after vaginal delivery or within 6 hours after straight catheter in recovery or 6 hours after catheter removal for cesarean delivery to resolution of postpartum urinary retention.
Time frame: Within 6 hours of postpartum urinary retention
Volume of urine voided
Volume of urine voided within 10 minutes after study intervention administration, expressed in milliliters
Time frame: Within 6 hours of postpartum urinary retention
Patient Satisfaction Level
defined as patient rating of "agree" or "disagree" or "don't know" to the question, "I would recommend this treatment to other patients who cannot empty their bladder after delivering a baby."
Time frame: Within one hour of study intervention administration
Plan to share: Undecided
No publications or documents are linked to this record.
Ran from Jan 2018 to primary completion in Feb 2026, 97 months.
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This study is terminated, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.
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Mount Carmel Health System