ArticleJournal of pain research2020
Analgesic Effect of Morphine Added to Bupivacaine in Serratus Anterior Plane Block Following Modified Radical Mastectomy. Only a Local Effect? Randomized Clinical Trial.
Article in Journal of pain research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02962024 (Does Local Morphine Add to Local Anesthetics in Serratus Anterior Plane Block for Post Mastectomy Pain Has a System Analgesic Effect? A Clinical and Pharmacokinetics Study), which is not on this map. Cited by 3 papers.
What it found
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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.
Does Local Morphine Add to Local Anesthetics in Serratus Anterior Plane Block for Post Mastectomy Pain Has a System Analgesic Effect? A Clinical and Pharmacokinetics Study
Who cites it
3 citing papers in PubMed, 7 citations in OpenAlex.
- Are the Analgesic Effects of Morphine Added to Transversus Abdominis Plane Block Systemic or Regional? A Randomized Clinical Trial.Pain research & management · 2025Trial
- Analgesia in esophagectomy: a narrative review.Journal of thoracic disease · 2023Review
- Efficacy and safety of the serratus anterior block compared to thoracic epidural analgesia in surgery: Systematic review and meta-analysis.Tzu chi medical journalArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSerratus anterior plane (SAP) block, a novel regional anesthetic procedure, involves the anterolateral chest wall. Opioid receptors have been found on peripheral nerve terminals, so morphine may have a local action.
objectiveThis work aimed at exploring the analgesic efficacy of morphine added to bupivacaine in SAPB in patients for whom modified radical mastectomy was conducted and whether it is a mere local effect.
methodsForty female patients were planned to have modified radical mastectomy participated in the study. Patients were randomly divided into two groups; Control group (C): received ultrasound-guided serratus anterior plane block with 20 mL of bupivacaine hydrochloride 0.25%; Morphine group (M): received the same in addition to 10 mg morphine sulfate. Intra- and post-operative blood samples were taken for the assessment of morphine serum levels. All patients were assessed for VAS scores during rest and movement (VAS-R and VAS-M). Time to the first request and the total amount of the rescue analgesia were recorded.
resultsIn group M, Morphine was not detected in the plasma of all patients. Both VAS-R and VAS-M were significantly higher in group C than in group M (
conclusionTen mg of morphine, when added to bupivacaine in SAPB, improved postoperative analgesia in patients to whom modified radical mastectomy was conducted. This effect seems to be attributed merely to local mechanisms. REGISTRATION: The registration number of this study is NCT02962024 at www.clinicaltrial.gov.
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Registered trials
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