The purpose of this study is to determine whether ultrasound guided fascia iliaca blocks performed before surgery help to reduce pain after elective total hip replacements.
Total hip arthroplasty is associated with moderate to severe pain in the acute postoperative period, which can increase the risk of postoperative complications such as thromboembolism, myocardial ischemia/infarction, pneumonia, poor wound healing, insomnia, and delirium. Sensory innervation of the hip joint comes from a combination of peripheral nerves, including femoral, obturator, sciatic, superior gluteal, and nerve for the quadratus femoris muscle. Superficial innervation of the skin involved in incision for hip arthroplasty comes from the lateral femoral cutaneous nerve (LFCN). The fascia iliaca block (FIB) was originally described in 1989 using a landmark technique. The ultrasound guided FIB was introduced in recent years, and has been shown to produce a better quality of block than the landmark technique. It appears to consistently block the femoral and LFCN, while being less successful in achieving consistent obturator blockade. The FIB is effective for analgesia for hip fracture injuries in the emergency department. Thus far, there has been limited exploration into the potential use of this block as a tool for postoperative analgesia after elective hip arthroplasty. The potential benefits of this regional block, as with other regional techniques, include better analgesia, less opioid use and associated side effects, and an improved overall patient satisfaction with postoperative recovery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
42
Ultrasound-guided regional anesthesia block to the groin area.
Saskatoon City Hospital
Saskatoon, Saskatchewan, Canada
Cumulative opioid consumption
Dilaudid will be used for analgesia postoperatively. If there is a contraindication to Dilaudid, another opioid will be ordered for analgesia, and doses will subsequently be converted back to Dilaudid equivalent doses for comparison
Time frame: 12 hours after surgery
Cumulative opioid consumption
Dilaudid will be used for analgesia postoperatively. If there is a contraindication to Dilaudid, another opioid will be ordered for analgesia, and doses will subsequently be converted back to Dilaudid equivalent doses for comparison
Time frame: 24 hours after surgery
Cumulative opioid consumption
Dilaudid will be used for analgesia postoperatively. If there is a contraindication to Dilaudid, another opioid will be ordered for analgesia, and doses will subsequently be converted back to Dilaudid equivalent doses for comparison
Time frame: 4, 8, and 48 hours after surgery
Verbal pain score (static and dynamic)
Pain score 0-10 with 10 being worst possible pain
Time frame: PACU, 4, 8, 12, 24, and 48 hours after surgery
Opioid side effect (nausea/vomiting, pruritus, constipation, urinary retention, sedation)
Presence of each side effect documented as "yes" or "no". Sedation will be assessed by the Ramsay Sedation Scale.
Time frame: PACU, 4, 8, 12, 24, and 48 hours after surgery
Overall patient satisfaction
Satisfaction rated as: very dissatisfied, dissatisfied, neutral, satisfied, or very satisfied
Time frame: 48 hours after surgery
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