New pain block aims to cut opioid use after kidney surgery
NCT ID NCT04085237
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether adding an ultrasound-guided ESP nerve block to standard pain medicine could reduce opioid use and improve pain control after laparoscopic kidney removal for cancer. Ten adults having keyhole kidney surgery were enrolled. The study was stopped early, so results are limited.
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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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10 people
The number who actually took part.
- Started
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Jan 2020
- Finished
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Oct 2023
- 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 years and older
- 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: * Patients requiring laparoscopic nephrectomy and partial nephrectomy for malignancy * Patients of age 18 and over * BMI \< 40 * Patients who are expected to stay in-hospital overnight after surgery Exclusion Criteria: * Patient refusal * Contraindications to paravertebral blocks: Infection at the site of needle insertion, empyema, allergy to local anesthetic drugs, and tumor occupying the thoracic paravertebral space, coagulopathy, bleeding disorder or therapeutic anticoagulation * Known allergy to local anesthetics * Inability to provide informed consent * Inability to use a PCA due to languate or comprehension barriers * BMI \>= 40 * Any patient on opioids for greater than or equal to 3 months duration prior to surgery * Patients with chronic pain syndromes * Donor nephrectomies due to incision location * Cystic kidney because of very large incisions
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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.
Contacts and locations
Locations
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St. Joseph's Healthcare Hamilton
Hamilton, Ontario, L8N 4A6, Canada
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Other studies related to the condition(s) this trial covers.
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