A Multicenter, Randomized, Double-Blind, Placebo-Controlled Trial to Evaluate the Efficacy and Safety of the Sufentanil NanoTab PCA System/15 mcg (Zalviso™) for the Treatment of Post-Operative Pain in Patients After Open Abdominal Surgery

Study Overview
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Brief Summary
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The purpose of this study is to compare the efficacy and safety of the Sufentanil NanoTab PCA System/15 mcg to the Placebo Sufentanil NanoTab PCA System for the management of acute moderate to severe post-operative pain after open abdominal surgery.

Official Title
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A Multicenter, Randomized, Double-Blind, Placebo-Controlled Trial to Evaluate the Efficacy and Safety of the Sufentanil NanoTab PCA System/15 mcg (Zalviso™) for the Treatment of Post-Operative Pain in Patients After Open Abdominal Surgery

Conditions
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Post-Operative Pain

Intervention / Treatment
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* Drug: Sufentanil NanoTab PCA System/15 mcg
* Drug: Placebo Sufentanil NanoTab PCA System


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female patients who are 18 years or older Patients who are scheduled to undergo an open abdominal surgery (including laparoscopic-assisted) under general anesthesia or spinal anesthesia that does not include intrathecal opioids during the operation. Post-surgical patients who have been admitted to the PACU and are expected to remain hospitalized and to have acute post-operative pain requiring parenteral opioids for at least 48 hours after surgery. Exclusion Criteria: Patients who have taken an opioid for more than 30 consecutive days, at a daily dose of more than 15 mg of morphine (or equivalent), within the past 3 months prior to surgery (e.g. more than 3 doses per day of Vicodin®, Norco®, Lortab® with 5 mg hydrocodone per tablet). Patients with an allergy or hypersensitivity to opioids. Female patients who are pregnant or breast-feeding

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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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Sufentanil NanoTab PCA System/15 mcg<br> | Drug: Sufentanil NanoTab PCA System/15 mcg<br>* 15 mcg Sufentanil NanoTab dosed sublingually every 20 minutes as needed for pain for up to 48 hours. Patient may elect to remain in study for up to 72 hours.<br>* Other names: Zalviso™;|
| Placebo Comparator: Placebo Sufentanil NanoTab PCA System<br> | Drug: Placebo Sufentanil NanoTab PCA System<br>* Placebo NanoTab dosed sublingually every 20 minutes as needed for pain for up to 48 hours. Patient may elect to remain in study for up to 72 hours.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time-weighted Summed Pain Intensity Difference (SPID) Over the 48-hour Study Period (SPID-48). | SPID-48 is the sum of the pain intensity difference (PID) over the 48 hour time period. A pain intensity score of 0 (no pain) to 10 (worse possible pain) is obtained before starting the study and throughout the 48 time period. The pain score at each assessment time is subtracted from the baseline pain score to provide the total sum score or SPID-48. A higher SPID-48 is better and indicates a reduction in pain intensity compared to the baseline score. The range of SPID48 scores were -232 to 326. Time-weighted SPID48 = ∑ [T(i) - T(i-1)] x PID(i), where T(0) = Time 0 (baseline), T(i) is the scheduled or unscheduled assessment time, and PID(i) is the PID score at time i for i=0 to 48 hours. Note: Active group n=114 and placebo group n=58, instead of active n=115 and placebo n=57, due to one active patient receiving placebo inadvertently. | 48 hours | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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In patient, post operative pain, Adult post-operative inpatients who are expected to require parenteral opioid analgesia for at least 48 hours after open abdominal surgery