Last updated on June 2019

Effects of Continuous Bilateral QL Analgesia After Open Abdominal Surgery


Are you eligible to participate in this study?

You may be eligible for this study if you meet the following criteria:

  • Conditions: Postoperative pain
  • Age: Between 18 - 100 Years
  • Gender: Male or Female

Inclusion Criteria:

  • Adults scheduled for elective colorectal surgery with a midline incision;
  • American Society of Anesthesiologists (ASA) physical status 1-3.

Exclusion Criteria:

  • Contraindication or intolerance to opioids and/or local anesthetics;
  • Inability to use IV PCA system;
  • History of chronic pain defined as use of opioids for more than 30 consecutive days within the 3 preoperative months at the dose equal or greater than equivalent of 15 mg of morphine and/or abdominal pain for more than 6 months, present most days of the weeks;
  • History of neurological illness and/or neuropathy - Peripheral neuropathy, paralysis;
  • Pregnancy and/or breastfeeding;
  • Chronic renal failure, defined by estimated GFR <60 ml/min;
  • Chronic liver failure, defined by cirrhosis, portal hypertension, or history of variceal bleeding.
  • BMI > 35

Recruitment Status: Closed


Brief Description Eligibility Contact Research Team


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