New nerve block slashes opioid use in kidney stone surgery
NCT ID NCT07487415
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a nerve block called anterior quadratus lumborum block in 54 adults having kidney stone surgery. The block reduced pain and the amount of strong painkillers (opioids) needed during and after surgery. It did not affect nausea or overall recovery quality at 24 hours.
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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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54 people
The number who actually took part.
- Started
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May 2024
- Finished
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Oct 2025
- 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 75 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: * Age between 18 and 75 years. * American Society of Anesthesiologists (ASA) physical status I-III. * Patients undergoing percutaneous nephrolithotomy (PCNL) under general anesthesia Exclusion Criteria: * Known allergy to local anesthetics. * Coagulopathy or bleeding disorders. * Infection at the site of intervention. * Neurological or neuromuscular diseases. * Psychiatric disorders. * Chronic pain syndromes. * Chronic analgesic or opioid use. * History of opioid abuse. * Contraindications to regional anesthesia. * Cardiac dysrhythmia that could interfere with Analgesia Nociception Index (ANI) monitoring. * Patients requiring vasoactive or chronotropic drugs (e.g., atropine, ephedrine, nitroglycerin, or noradrenaline) to maintain hemodynamic stability during surgery. * Refusal to participate in the study.
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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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Zonguldak Bülent Ecevit University Hospital
Zonguldak, Zonguldak Province, Turkey (Türkiye)
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Which kidney stone surgery causes more Pre-Op worry?