ClinicalTrials.gg
CompletedNCT07830706Updated Sep 23, 2026

Effect of Erector Spinae Plane Block on Neuropathic Pain After Abdominal Hysterectomy

An interventional study of Bupivacaine and Standard Perioperative Analgesia in Postoperative Pain and Chronic Postsurgical Pain, sponsored by Necmettin Erbakan University. Completed at 1 site in Turkey (Türkiye). Open to female participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-09-23.

Sponsored by Necmettin Erbakan University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year 8 months after the study started (first participant enrolled Jan 2025, registered Sep 2026).
Phase
Not applicable
Study type
Interventional
Enrollment
200
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
Female
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 362 studies testing bupivacaine in Pain, Postoperative — 55 open to participants now, 58 under way, 5 of them phase 3. Bupivacaine · Pain, Postoperative.

Enrollment
31st of 362
200 · median 70
Started
2025
with 25 others
No phase
109 of 362
24 open now
Registered
358th of 362
by date

Among the 362 studies testing bupivacaine in Pain, Postoperative, this one is the 31st largest by enrollment, is one of 26 that started in 2025, is one of 109 with no phase, and was the 358th registered.

By phase

362 studies; the count open now beside each. This study's row is marked.

Phase 4133 · 18 open
No phasethis study109 · 24 open
Phase 243 · 4 open
Phase 342 · 2 open
Phase 121 · 4 open
Phase 2/311 · 3 open
Phase 1/23 · 0 open

By the year they started

First in 2004; this study’s year is marked. 26 started in 2025.

Size and results

Median enrollment 70 across the 362 interventional studies. Of the 258 that completed or were terminated, 106 (41%) have results posted.

Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 362 studies testing bupivacaine in Pain, Postoperative, or all of them as a file.
02

Study summary

This study evaluated whether bilateral erector spinae plane block (ESPB) performed before abdominal hysterectomy could reduce postoperative pain and the development of chronic and neuropathic pain. Adult patients undergoing abdominal hysterectomy under general anesthesia were assigned to receive either bilateral ESPB with bupivacaine or standard perioperative analgesic management without ESPB. Postoperative pain was assessed during the early postoperative period and at 1 and 6 months after surgery. Chronic and neuropathic pain were evaluated at 1 and 6 months using validated pain assessment tools.

03

Conditions studied

  • Postoperative Pain
  • Chronic Postsurgical Pain

Browse trials for

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
Female
Accepts healthy volunteers
No

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.

Inclusion criteria

  • Adults aged 18-65 years
  • (ASA) physical status I-III
  • (BMI) \<35 kg/m²
  • Scheduled for elective total abdominal hysterectomy under general anesthesia
  • Provided to participate in the study

Exclusion criteria

Exclusion Criteria:

  • Decompensated heart failure
  • Severe respiratory distress
  • Renal failure
  • Hepatic failure
  • History of opioid addiction
  • Current anticoagulant use or bleeding diathesis
  • Refusal to participate in the study
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
200 participants (actual)

Study arms

  • Experimental
    ESPB Group

    Participants assigned to the ESPB group received bilateral ultrasound-guided erector spinae plane block at the T8-T9 level before surgery, with 20 mL of 0.25% bupivacaine administered on each side, in addition to standard perioperative analgesic management.

    Drug: Bupivacaine

  • Active comparator
    Control Group

    Participants assigned to the control group received standard perioperative analgesic management without erector spinae plane block.

    Other: Standard Perioperative Analgesia

Interventions

  • 0.25% bupivacaine, 20 mL administered bilaterally as part of ultrasound-guided erector spinae plane block at T8-T9.

  • OtherStandard Perioperative Analgesia

    Participants received standard perioperative analgesic management according to the routine institutional protocol, without erector spinae plane block.

06

What researchers measure

Primary outcomes

  1. Chronic postoperative pain severity at 6 months

    Chronic postoperative pain severity was assessed using the Numeric Rating Scale (NRS), ranging from 0 (no pain) to 10 (worst pain imaginable).

    Time frame: 6 months after surgery

07

Study locations

1 site
  • Necmettin Erbakan University Medical Faculty Hospital Konya, Türkiye
    Konya, Turkey (Türkiye)
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07830706
Responsible party
Merve Yusifov (Specialist Physician, Necmettin Erbakan University) — Principal investigator
First posted
Sep 21, 2026
Start date
Jan 1, 2025
Primary completion
Dec 31, 2025
Completion
Dec 31, 2025
Last update
Sep 23, 2026

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Bupivacaine

Start the discussion