Trial reportObesity surgery2019
The Use of Intraperitoneal Bupivacaine in Laparoscopic Roux-en-Y Gastric Bypass: a Double-blind, Randomized Controlled Trial.
Trial report in Obesity surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06145945 (A Randomized Controlled Study of the Effect of Intraperitoneal Ropivacaine on Visceral Pain After Laparoscopic Gastrectomy), which is not on this map. Cited by 9 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Randomized Controlled Study of the Effect of Intraperitoneal Ropivacaine on Visceral Pain After Laparoscopic Gastrectomy
Who cites it
9 citing papers in PubMed, 3 syntheses or guidelines pooled it, 11 citations in OpenAlex.
- Single-Shot Regional Anesthesia for Bariatric Surgery: a Systematic Review and Network Meta-Analysis.Obesity surgery · 2023Pooled it
- Effect of Intraperitoneal Local Anesthetics in Laparoscopic Bariatric Surgery: A Meta-Analysis of Randomized Controlled Trials.World journal of surgery · 2022Pooled it
- Transversus Abdominis Plane Block Versus Intraperitoneal Local Anesthetics in Bariatric Surgery: A Systematic Review and Network Meta-analysis.Obesity surgery · 2021Pooled it
- Analgesic Effects of Intraperitoneal Bupivacaine Following Laparoscopic Bariatric Surgery: A Randomized Clinical Trial.Obesity surgery · 2026Trial
- Trial
- Intraperitoneal Instillation of Local Anesthetic (IPILA) in Bariatric Surgery and the Effect on Post-operative Pain Scores: a Randomized Control Trial.Obesity surgery · 2022Trial
- Evidence Map of Pharmacologic and Non-Pharmacologic Perioperative Strategies for Managing Acute Postoperative Pain After Laparoscopic Surgery, 2012-2025: The M-PALS Collaborative.Journal of clinical medicine · 2026Review
- Analgesic efficacy of intraperitoneal local anaesthetic instillation (IPLA) in laparoscopic bariatric surgery: a systematic review and meta-analysis.Journal of anesthesia, analgesia and critical care · 2026Review
- Efficacy of intraperitoneal bupivacaine in laparoscopic bariatric surgery.Annals of medicine and surgery (2012) · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSeveral studies have shown a reduction in postoperative pain and length of hospital stay when using intraperitoneal local anesthetics during laparoscopic surgery. In morbidly obese patients, respiratory depression due to opioid use is a serious side effect. Any different type of analgesia is therefore clinically relevant.
objectiveTo assess the effect of intraperitoneal bupivacaine on postoperative pain after laparoscopic Roux-en-Y gastric bypass (LRYGB).
methodsBetween March and November 2017, 130 patients were included and randomly assigned to receive 20 ml or 0 ml of 2.5% bupivacaine hydrochloride sprayed onto the diaphragm. Pain scores for abdominal and shoulder pain were conducted using the visual analogue scale (VAS) for pain score at 0, 1, 6, and 24 h postoperatively. The length of hospital stay and use of analgesics was recorded in digital patient records. The primary outcome is the pain scores and the secondary outcomes are postoperative use of opioids or antiemetics and length of hospital stay.
resultsThe study and control group contained respectively 66 and 61 patients. Patient characteristics were equal in both groups (p < 0.05), except for age. No significant reduction of postoperative pain or opioid use was seen with the use of intraperitoneal bupivacaine. There was also no significant reduction in the use of antiemetics and length of hospital stay.
conclusionThe use of intraperitoneal bupivacaine in LRYGB does not show a statistically significant reduction in postoperative pain or postoperative opioid use. Therefore, using intraperitoneal bupivacaine has no clinical relevance and should no longer be used in LRYGB.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.