Which block works best for hemorrhoid pain?
NCT ID NCT07350460
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests two types of nerve blocks to control pain after hemorrhoid surgery. One group gets a pudendal block, the other a sacral ESP block, both using the same numbing medicine. Researchers will measure pain levels and how quickly patients recover. The goal is to find which block provides better pain relief and faster recovery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Ropivacaine
- What this could lead to
- If successful, this could show that the sacral ESP block provides equal or better pain control than the pudendal block, improving recovery after hemorrhoid surgery.
- What could go wrong
- This is a small, early-phase trial with only 64 participants, so results may not apply to everyone. Pain relief varies by individual, and the sham injections may cause some discomfort.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 64 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2026
- Expected to finish
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Sep 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 80 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adults (≥18 years old) scheduled for elective excisional hemorrhoidectomy; * Ability to understand the nature of the study and provide written informed consent; * American Society of Anesthesiologists (ASA) physical status I-III; * Ability to comply with study procedures and postoperative evaluations. Exclusion Criteria: * Pregnancy; * Body weight under 50 kg due to the potential risk of local anaesthetic systemic toxicity (LAST); * BMI \> 40; Known allergy or contraindication to local anaesthetics (e.g., ropivacaine, prilocaine); * Severe coagulation disorders or current anticoagulant therapy contraindicating spinal or peripheral deep nerve blocks (like pudendal block, because Sacral ESP is considered a superficial block); * Infection at the puncture site; * Neurological disorders affecting the sacral or pudendal nerve pathways; * Severe psychiatric conditions impairing study participation; * Language barriers
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Ospedale Regionale Bellinzona e Valli (ORBV) CH-6500 Bellinzona Switzerland
RECRUITINGBellinzona, 6500, Switzerland
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a Long-Acting anesthetic ease Post-Surgery pain better than the standard?
- New Chinese-Language questionnaires aim to better measure hemorrhoid suffering
- Could a tiny camera make hemorrhoid surgery less painful?
- Numbing ointment could ease pain after hemorrhoid surgery, reduce opioid use