Effect of Ultrasound-Guided Quadro-Iliac Plane Block on Postoperative Analgesia After Lumbar Spinal Surgery

Официальное название

Evaluation of the Effect of Ultrasound-Guided Quadro-Iliac Plane Block on Postoperative Analgesia in Patients Undergoing Lumbar Spinal Surgery

Обзор

This prospective observational study aims to evaluate the effect of ultrasound-guided Quadro-Iliac Plane Block (QIPB) on postoperative analgesia in patients undergoing lumbar spinal surgery. Lumbar spinal procedures are commonly associated with significant postoperative pain, which may impair early mobilization and increase opioid consumption. In routine clinical practice, QIPB is increasingly used as part of multimodal analgesia to improve pain control and reduce opioid-related adverse effects. Adult patients scheduled for elective lumbar spinal surgery under general anesthesia will be followed according to routine clinical care. Postoperative analgesia will be managed with intravenous patient-controlled analgesia (PCA) using tramadol, with or without the addition of ultrasound-guided QIPB, based on the preference of the attending anesthesiologist. No intervention or treatment assignment will be performed by the investigators. Postoperative pain scores at rest and during movement, opioid consumption, need for rescue analgesics, incidence of nausea and vomiting, and patient satisfaction will be recorded during the first 24 hours after surgery. The findings of this study are expected to provide further clinical evidence regarding the effectiveness of QIPB as part of multimodal analgesia in lumbar spinal surgery.

Подробное описание

This is a single-center, prospective observational cohort study conducted in patients undergoing elective lumbar spinal surgery under general anesthesia. The study is designed to assess the effects of ultrasound-guided Quadro-Iliac Plane Block (QIPB) on postoperative analgesia when used as part of routine multimodal pain management.

Eligible patients aged 18-65 years with American Society of Anesthesiologists (ASA) physical status I-III and a body mass index below 35 kg/m² will be included after providing written informed consent. All patients will receive standardized general anesthesia and postoperative intravenous patient-controlled analgesia (PCA) with tramadol as part of routine care. The decision to perform QIPB will be made by the attending anesthesiologist according to clinical judgment and routine practice, without any intervention or assignment by the research team.

Ultrasound-guided QIPB, when applied, will be performed bilaterally under sterile conditions in the prone position at the end of surgery. In patients who do not receive QIPB, the surgeon will perform local anesthetic infiltration (LAI) of the incision site as part of routine postoperative analgesia. Patients will be observed in two cohorts: those receiving PCA with LAI and those receiving PCA with QIPB.

Postoperative outcomes will be assessed in the post-anesthesia care unit and at 1, 6, 12, and 24 hours postoperatively. Pain intensity will be evaluated using the Numeric Rating Scale (NRS) at rest and during movement. Secondary outcomes will include total opioid consumption, time to first rescue analgesic requirement, incidence of postoperative nausea and vomiting, sedation level, and patient satisfaction assessed using a 5-point Likert scale at 24 hours. Any block-related complications will also be recorded.

Data will be analyzed using appropriate statistical methods to compare postoperative analgesic outcomes between the two cohorts. This observational study aims to reflect real-world clinical practice and contribute to the growing evidence on the role of QIPB in postoperative pain management after lumbar spinal surgery.

Вмешательства

• Другое QIPB
  Quadro-Iliac Plane Block using local anesthetic.
• Другое LAI
  The surgeon will perform local anesthetic infiltration (LAI) of the incision site.

Первичные конечные точки

• Postoperative Pain Intensity [Срок оценки: Within the first 24 hours after surgery]

Вторичные конечные точки (4)

• Total Opioid Consumption [Срок оценки: Within the first 24 hours after surgery]
• Requirement for Rescue Analgesia [Срок оценки: Within the first 24 hours after surgery]
• Postoperative Nausea and Vomiting [Срок оценки: Within the first 24 hours after surgery]
• Patient Satisfaction With Pain Management [Срок оценки: 24 hours after surgery]

Критерии участия

Критерии включения

• Patients aged between 18 and 65 years
• American Society of Anesthesiologists (ASA) physical status I-III
• Body mass index (BMI) <35 kg/m²
• Scheduled for elective posterior lumbar spinal instrumentation surgery under general anesthesia

Критерии исключения

• Refusal to participate in the study
• Emergency surgery
• Local infection or hematoma at the block application site
• Previous surgery at the block application site
• Presence of coagulopathy
• Known allergy or toxicity to local anesthetics
• History of hematological, renal, or hepatic disease, or advanced respiratory or cardiac failure
• Chronic analgesic use, chronic alcohol consumption, or substance abuse
• Inability to speak Turkish or presence of language/communication barriers

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения

Когортное

Центры проведения

Turkey (Türkiye) · 1 центр

• Fatih Sultan Mehmet Training and Research Hospital — Istanbul

Идентификаторы

NCT: NCT07326774 · 2025/397

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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