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Trial · NCT02574520

Trial of Extended Release Bupivacaine for Pain Relief After Surgery

NCT02574520, Phase 3, Completed, Durect; results first posted 2021-07-13

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Trial of Extended Release Bupivacaine for Pain Relief After Surgery. Trials, record NCT02574520. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT02574520

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Trial of Extended Release Bupivacaine for Pain Relief After Surgery
NCT number
NCT02574520
Status
Completed
Phases
Phase 3
Enrollment
399 participants, actual
Lead sponsor
Durect
Conditions
Post Operative Pain
Interventions
SABER-Bupivacaine (Part 1), SABER-Bupivacaine (Part 2), Saline Placebo, Bupivacaine HCl
First posted
2015-10-14
Last updated
2021-07-13
Results first posted
2021-07-13

Source ClinicalTrials.gov

Registered outcomes7

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryPain Intensity on Movement From 0-48 Hours Post-TreatmentAssessed from 0 to 48 hours post-dose, summary measure (see description) reported.
A derived measure computed based on a patient-reported numerical pain rating scale assessing pain as a whole number from 0 (no pain) to 10 (worst pain imaginable) when the subject sits up from a supine position. This measure was evaluated by electronic diary at 13 planned time points from 0 to 48 hours post-treatment. The values reported are mean pain scores for each treatment group.
SecondaryPain Intensity Using the NPRS-11 With MovementAssessed from 0 to 72 hours post-dose, summary measure (see description) reported.
A derived measure computed based on a patient-reported numerical pain rating scale assessing pain as a whole number from 0 (no pain) to 10 (worst pain imaginable) when the subject sits up from a supine position. This measure was evaluated by electronic diary at 17 planned time points from 0 to 72 hours post-treatment. The values reported are mean pain scores for each treatment group.
SecondaryTotal IV Morphine-equivalent Dose of Rescue Opioids0-72 hrs. post dose (after surgery)IV morphine-equivalent dose
SecondaryComposite Endpoint of Silverman's Integrated Analgesic (SIA) Assessment Score0 to 72 hours
Score of Integrated Analgesia (SIA) is a composite endpoint that integrates pain assessment scores with opioid use over various collections of timepoints by ranking the pain score and the opioid use separately across treatments. After the scores are computed the means are calculated across time points to provide a single overall treatment effect. The composite SIA score ranges from -200 to 200 with -200 being the best case and 200 the worst case.
SecondarySubjects Not Taking Rescue Medication From PACU Discharge to 72 HoursFrom PACU Discharge to 72 Hours post-treatmentPooled SABER-Bupivacaine parts 1 + 2 vs. Bupivacaine HCl
SecondaryTime to First Opioid Rescue Medication Use After Discharge From the PACUFrom PACU Discharge to 72 Hours post-treatmentPooled SABER-Bupivacaine parts 1 + 2 vs. Bupivacaine HCl
SecondaryTime to PACU Discharge Eligibility as Assessed by Modified Post-Anesthesia Discharge Scoring System (mPADSS)From admission to discharge from PACU (Approximately 0 to 12 hours)
mPADSS is a tool used to determine eligibility for discharge from the PACU after ambulatory surgery. It includes an assessment of parameters such as vital signs, activity level, nausea/vomiting, pain, and surgical bleeding. For this trial, evaluation of eligibility for PACU discharge by mPADSS has been slightly modified to provide a standardized means of assessing eligibility for PACU discharge across multiple investigative sites and also ensures that nonmedical complications, such as a missing ride home, do not interfere with evaluation of test drug effects.

Outcomes7

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYPain Intensity on Movement From 0-48 Hours Post-TreatmentAssessed from 0 to 48 hours post-dose, summary measure (see description) reported.
mITT Population, results for only the prespecified analysis population {SABER-Bupivacaine (Part 2) and Bupivacaine HCl (Part 2)} are provided, there was no prespecified primary outcome measure that included the SABER-Bupivacaine (Part 1) arm or the Saline Placebo (Part 1) arm.
score on a scaleMEAN
SECONDARYPain Intensity Using the NPRS-11 With MovementAssessed from 0 to 72 hours post-dose, summary measure (see description) reported.
mITT Population, results for only the prespecified analysis population {SABER-Bupivacaine (Part 1 and Part 2 combined) and Bupivacaine HCl (Part 2)} are provided, there was no prespecified secondary outcome measure that included the Saline Placebo (Part 1) arm or the SABER-Bupivacaine (Part 1) arm as a standalone treatment group.
score on a scaleMEAN
SECONDARYTotal IV Morphine-equivalent Dose of Rescue Opioids0-72 hrs. post dose (after surgery)
mITT Population, results for only the prespecified analysis population {SABER-Bupivacaine (Part 1 and Part 2 combined) and Bupivacaine HCl (Part 2)} are provided, there was no prespecified secondary outcome measure that included the Saline Placebo (Part 1) arm or the SABER-Bupivacaine (Part 1) arm as a standalone treatment group.
IV morphine equivalent (mg)MEAN
SECONDARYComposite Endpoint of Silverman's Integrated Analgesic (SIA) Assessment Score0 to 72 hours
mITT Population, results for only the prespecified analysis population {SABER-Bupivacaine (Part 1 and Part 2 combined) and Bupivacaine HCl (Part 2)} are provided, there was no prespecified secondary outcome measure that included the Saline Placebo (Part 1) arm or the SABER-Bupivacaine (Part 1) arm as a standalone treatment group.
score on a scaleMEAN
SECONDARYSubjects Not Taking Rescue Medication From PACU Discharge to 72 HoursFrom PACU Discharge to 72 Hours post-treatment
mITT Population, results for only the prespecified analysis population {SABER-Bupivacaine (Part 1 and Part 2 combined) and Bupivacaine HCl (Part 2)} are provided, there was no prespecified secondary outcome measure that included the Saline Placebo (Part 1) arm or the SABER-Bupivacaine (Part 1) arm as a standalone treatment group.
participantsNUMBER
SECONDARYTime to First Opioid Rescue Medication Use After Discharge From the PACUFrom PACU Discharge to 72 Hours post-treatment
mITT Population, results for only the prespecified analysis population {SABER-Bupivacaine (Part 1 and Part 2 combined) and Bupivacaine HCl (Part 2)} are provided, there was no prespecified secondary outcome measure that included the Saline Placebo (Part 1) arm or the SABER-Bupivacaine (Part 1) arm as a standalone treatment group.
hoursMEDIAN
SECONDARYTime to PACU Discharge Eligibility as Assessed by Modified Post-Anesthesia Discharge Scoring System (mPADSS)From admission to discharge from PACU (Approximately 0 to 12 hours)
mITT Population, results for only the prespecified analysis population {SABER-Bupivacaine (Part 1 and Part 2 combined) and Bupivacaine HCl (Part 2)} are provided, there was no prespecified secondary outcome measure that included the Saline Placebo (Part 1) arm or the SABER-Bupivacaine (Part 1) arm as a standalone treatment group.
hoursMEDIAN

Results by group14

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Pain Intensity on Movement From 0-48 Hours Post-TreatmentPart 2/SABER-Bupivacaine5.55Standard Error 0.065score on a scale
Pain Intensity on Movement From 0-48 Hours Post-TreatmentPart 2/Bupivacaine HCl5.87Standard Error 0.059score on a scale
Pain Intensity Using the NPRS-11 With MovementPart 1 and Part 2: SABER-Bupivacaine4.94Standard Error 0.049score on a scale
Pain Intensity Using the NPRS-11 With MovementPart 2: Bupivacaine HCl5.40Standard Error 0.052score on a scale
Total IV Morphine-equivalent Dose of Rescue OpioidsPart 1 and Part 2: SABER-Bupivacaine21.4Standard Error 1.37IV morphine equivalent (mg)
Total IV Morphine-equivalent Dose of Rescue OpioidsPart 2: Bupivacaine HCl22.6Standard Error 1.58IV morphine equivalent (mg)
Composite Endpoint of Silverman's Integrated Analgesic (SIA) Assessment ScorePart 1 and Part 2: SABER-Bupivacaine-17.3Standard Error 8.83score on a scale
Composite Endpoint of Silverman's Integrated Analgesic (SIA) Assessment ScorePart 2: Bupivacaine HCl-1.5Standard Error 9.33score on a scale
Subjects Not Taking Rescue Medication From PACU Discharge to 72 HoursPart 1 and Part 2: SABER-Bupivacaine57participants
Subjects Not Taking Rescue Medication From PACU Discharge to 72 HoursPart 2: Bupivacaine HCl42participants

Participant flow16

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDSABER-Bupivacaine (Part 1)48
Overall StudySTARTEDSaline Placebo (Part 1)46
Overall StudySTARTEDSABER-Bupivacaine (Part 2)153
Overall StudySTARTEDBupivacaine HCL (Part 2)152
Overall StudyDosedSABER-Bupivacaine (Part 1)46
Overall StudyDosedSaline Placebo (Part 1)46
Overall StudyDosedSABER-Bupivacaine (Part 2)148
Overall StudyDosedBupivacaine HCL (Part 2)148
Overall StudyCOMPLETEDSABER-Bupivacaine (Part 1)46
Overall StudyCOMPLETEDSaline Placebo (Part 1)46

Adverse events144

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherBack painMusculoskeletal and connective tissue disordersSABER-Bupivacaine (Part 1)345
otherBack painMusculoskeletal and connective tissue disordersSaline Placebo (Part 1)347
otherBack painMusculoskeletal and connective tissue disordersSABER-Bupivacaine (Part 2)5148
otherBack painMusculoskeletal and connective tissue disordersBupivacaine HCL (Part 2)11148
otherConstipation (Solicited)Gastrointestinal disordersSABER-Bupivacaine (Part 1)2045
otherConstipation (Solicited)Gastrointestinal disordersSaline Placebo (Part 1)1947
otherConstipation (Solicited)Gastrointestinal disordersSABER-Bupivacaine (Part 2)65148
otherConstipation (Solicited)Gastrointestinal disordersBupivacaine HCL (Part 2)58148
otherConstipationGastrointestinal disordersSABER-Bupivacaine (Part 1)245
otherConstipationGastrointestinal disordersSaline Placebo (Part 1)247

Adverse event totals12

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalitySABER-Bupivacaine (Part 1)045
Total, all-cause mortalitySaline Placebo (Part 1)047
Total, all-cause mortalitySABER-Bupivacaine (Part 2)0148
Total, all-cause mortalityBupivacaine HCL (Part 2)0148
Total, other adverse eventsSABER-Bupivacaine (Part 1)4345
Total, other adverse eventsSaline Placebo (Part 1)4747
Total, other adverse eventsSABER-Bupivacaine (Part 2)148148
Total, other adverse eventsBupivacaine HCL (Part 2)146148
Total, serious adverse eventsSABER-Bupivacaine (Part 1)145
Total, serious adverse eventsSaline Placebo (Part 1)047

Papers0

The papers the trial lists on ClinicalTrials.gov.

None in this release.

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons1

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

Comparison
Part 1 and Part 2: SABER-Bupivacaine vs Part 2: Bupivacaine HCl: Subjects Not Taking Rescue Medication From PACU Discharge to 72 Hours

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT02574520

GET https://conductscience.org/api/trials/v1/NCT02574520/events?page=2