Postoperative Pain in Patients Undergoing Scheduled Laparoscopic Intestinal Resection Surgery

Study Overview
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Brief Summary
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This observational prospective study aims to evaluate the postoperative analgesic effect of a regional anesthesia thechnique (TAP block) in patients undergoing scheduled laparoscopic intestinal resection for intestinal cancer. ASA I-III patients operated between May 1 and September 30, 2019 under general anesthesia according to usual clinical practice, will be included. Patients who meet any of the following criteria will be excluded from this study: under 18 years old, language barrier, cognitive impairment or inability to assist in clinical assessment, drug or alcohol abuse, intake of opioids, consumption of analgesics 24 hours before surgery, BMI <18 or >35 kg/m2. Subsequently, an analysis will be made evaluating the quality of analgesia and the appearance of postoperative chronic pain and comparing the patients who underwent TAP block with those who did not.

Detailed Description
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The transverse abdominal plane (TAP) block is a regional anesthesia technique that blocks the afferent nerves of the anterolateral abdominal wall. This observational prospective study aims to evaluate the postoperative analgesic effect in patients undergoing laparoscopic intestinal resection. ASA I-III patients operated on a scheduled basis, between May 1 and September 30, 2019, by laparoscopy for intestinal cancer resection under general anesthesia according to usual clinical practice, will be included. Patients who meet any of the following criteria will be excluded from this study: under 18 years old, language barrier, cognitive impairment or inability to assist in clinical assessment, drug or alcohol abuse, intake of opioids, consumption of analgesics 24 hours before surgery, BMI <18 or >35 kg/m2. Subsequently, an analysis will be made evaluating the quality of analgesia and the appearance of postoperative chronic pain and comparing the patients who underwent TAP block with those who did not.

Official Title
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Postoperative Pain Assessment in Patients Undergoing Scheduled Laparoscopic Intestinal Resection Surgery

Conditions
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Postoperative Pain, Acute, Postoperative Pain, Chronic

Intervention / Treatment
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* Procedure: TAP


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: ASA I-III Operated on a scheduled basis for laparoscopic intestinal cancer resection Exclusion Criteria: Under 18 years old Language barrier Cognitive impairment or inability to collaborate in clinical assessment during the study Drug or alcohol abuse Habitual intake of opioids Consumption of analgesics 24 hours before surgery BMI <18 or >35 kg/m2

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| TAP block<br>Patients receiving TAP block preoperatively, following routine clinical practice | Procedure: TAP<br>* The transverse abdominal plane (TAP) block is a regional anesthesia technique performed using ultrasound that blocks the afferent nerves of the anterolateral abdominal wall, injecting local anesthetic in the fascial plane between the deep oblique and the transversus abdominis muscles.<br>|
| Non-TAP<br>Patients not receiving TAP block preoperatively, following routine clinical practice | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Postoperative acute pain assessed using Visual Analogue Scale, from 0 to 10 | assessed using visual analogue scale | from the arrival to the postanesthesia care unit to the 4 postoperative hours | 
| Intraoperative analgesic consumption | assessed measuring the perioperative analgesics provided during the intraoperative period following routine clinical practice | from the anesthesia induction to the end of the surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Postoperative chronic pain assessed using Visual Analogue Scale, from 0 to 10 | assessed using visual analogue scale | 2 years postoperatively | 
| Side effects | to record the perioperative side effects secondary to the analgesia administered perioperatively | from the arrival to the postanesthesia care unit to the hospital discharge (7 days postoperatively) |