Prevention of Acute Postoperative Pain in Laparoscopic Colorectal Surgery: A Comparison Between Opioid-Free Anesthesia and Conventional Strategy as a Method of Intraoperative Analgesia
试验速览
- 阶段
- 1 期
- 状态
- 进行中（未招募）
- 入组人数
- 200
- 试验地点
- 2
- 主要终点
- Intensity of Acute Postoperative Pain (APP)
研究概览
简要总结
This study wants to find out if using a pain control method without opioids (Opioid-Free Anesthesia or OFA) works as well as or better than standard anesthesia (which uses opioids) for adults having minimally invasive (laparoscopic) colorectal surgery. Opioids are strong pain medicines often used during surgery, but they can cause side effects like nausea, vomiting, slower digestion, and breathing problems.
Researchers will divide participants into two groups by chance (like flipping a coin). One group will receive the opioid-free anesthesia, which uses a combination of other types of pain medicines. The other group will receive standard anesthesia with opioids. The main goal is to see if the opioid-free method reduces pain and the need for extra pain medicine in the first 24 hours after surgery. The study will also look at whether patients have fewer side effects, wake up more comfortably, and can leave the hospital sooner.
详细描述
Postoperative pain management is a critical component of Enhanced Recovery After Surgery (ERAS) pathways, particularly in major abdominal procedures such as laparoscopic colorectal surgery. Traditionally, intraoperative and postoperative analgesia relies heavily on opioid administration. However, opioid use is frequently associated with adverse events-including postoperative nausea and vomiting (PONV), paralytic ileus, respiratory depression, and hyperalgesia-which can delay functional recovery and prolong hospital stays.
Opioid-Free Anesthesia (OFA) is a multimodal analgesic strategy that utilizes non-opioid pharmacological agents to block sympathetic nervous system responses and prevent central sensitization. This study is a prospective, single-blind, randomized controlled trial designed to evaluate the efficacy and safety of an OFA protocol compared to standard Opioid-Based Anesthesia (OBA). The OFA protocol utilizes a customized combination of agents, including Dexmedetomidine, Ketamine, Lidocaine, Magnesium Sulfate, and Dexamethasone.
Eligible adult patients (ASA I-III) scheduled for elective laparoscopic colorectal surgery will be randomized in a 1:1 ratio to either the OFA or OBA group. Standardized clinical pathways will be followed for all patients outside of the specific anesthetic interventions. Data collection will occur from the intraoperative period through 24 hours post-surgery, with continuous follow-up extending until hospital discharge.
By comparing these two approaches, this trial aims to provide robust clinical evidence on whether completely eliminating intraoperative opioids can optimize postoperative pain control, reduce the incidence of classic opioid-related adverse effects, enhance overall patient satisfaction, and accelerate surgical recovery in colorectal patients.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Participant)
盲法说明
single blinded
入排标准
- 年龄范围
- 18 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adult patients aged 18 to 90 years old of any sex.
- •Diagnosed with colorectal cancer (any type and stage).
- •Scheduled for elective laparoscopic colorectal surgery in the Lanzarote Health Area.
- •Classified as American Society of Anesthesiologists (ASA) physical status I, II, or III.
- •Ability to understand the study procedures and signed written informed consent.
排除标准
- •Known allergy or hypersensitivity to any of the study drugs.
- •Elevated intraocular pressure or history of intracranial lesions with a risk of elevated intracranial pressure.
- •History of traumatic brain injury (TBI) or epileptic seizures.
- •Severe psychiatric disease that may interfere with pain evaluation or outcome assessment.
- •Hyperthyroidism or currently undergoing thyroid replacement therapy.
- •Severe cardiac history, including congestive heart failure, severe coronary artery disease, poorly controlled tachyarrhythmias or bradyarrhythmias, or difficult-to-control arterial hypertension.
- •Baseline oxygen saturation (SpO2) < 90% on room air.
- •Moderate or severe renal or hepatic insufficiency.
- •Pathologies associated with hypersalivation or swallowing difficulties.
- •Pregnancy or currently lactating.
结局指标
主要结局
Intensity of Acute Postoperative Pain (APP)
时间窗: 10 minutes, 60 minutes, 120 minutes, 6 hours, and 24 hours post-surgery
Pain intensity assessed using the Numeric Rating Scale (NRS). The scale ranges from 0 to 10, where 0 indicates "no pain" and 10 indicates the "worst imaginable pain". Lower scores indicate better pain control.
Total Need for Rescue Analgesia
时间窗: Up to 24 hours post-surgery.
The total cumulative dose of rescue pain medication administered to the patient when NRS scores exceed the acceptable threshold. Quantified and reported in Morphine Equivalent Doses (MED) in milligrams.
次要结局
- Patient Satisfaction and Quality of Recovery(Through hospital discharge, an average of 7 days post-surgery)
- Incidence of Postoperative complications(Up to 24 hours post-surgery.)
研究者
Daniel Pérez
Principal Investigator and Attending Anesthesiologist
Hospital Universitario Royo Villanova