Studies have suggested a link with effective pain relief and reduced illness and death in very unwell patients. This study will determine the most effective method of injecting local anaesthetic around the nerves which supply the hip joint. Local anaesthetic will be injected around the hips nerve supply using either ultrasound, loss of resistance or electrical nerve stimulator to guide the positioning of the needle on patients due for elective total hip replacement. The patient will then be observed for 30 minutes and the patient ability to move or feel the upper leg will recorded. A standard anaesthetic and a hip replacement operation will then be performed. Standard pain relief protocols will be used the operation and after the operation. After the operation we will record the amount of morphine used and how happy the patients have been with their treatment at 6 hours after the operation and at 24 hours after the operation. The first day the patient is able to walk on their new hip replacement will also be recorded.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
269
Use of ultrasound to guide the insertion of anterior psoas compartment block
The use of the nerve stimulator to guide insertion of the anterior psoas compartment block
Use of ultrasound to guide the insertion of anterior psoas compartment block
Gartnavel General hospital
Glasgow, Lanarkshire, United Kingdom
Glasgow Royal Infrimary
Glasgow, Lanarkshire, United Kingdom
Golden Jubilee hospital
Glasgow, Lanarkshire, United Kingdom
Royal alexandra hospital
Paisley, Renfrewshire, United Kingdom
percentage of patients with effective regional analgesia
Time frame: Induction of anaesthesia
hospital mortality
Time frame: 1months after operation
sensory function in lateral cutaneous nerve
Time frame: 0mins, 10mins 20mins post insertion of local anaesthetic
sensory function of femoral nerve
Time frame: 0mins, 10mins, 20mins after insertion of local anesthetic
sensory function of obturator nerve
Time frame: 0mins, 10mins, 20mins after insertion of local anesthetic
motor function of obturator nerve
Time frame: 0mins, 10mins and 20minutes after insrtion of local anesthetic
motor function of femoral nerve
Time frame: 0mins,10mins and 20mins post insertion of local anesthetic
acute mental test scores
Time frame: 6hours and 24 hours post operatively
total morphine dose administered
Time frame: 6hours and 24 hours post operstively
day first mobilise post operatively
Time frame: post operatively 0-10 days
patient satisfaction scores
Time frame: 6 hours and 24hours post operatively
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