To extend the duration of peripheral nerve blockade after major foot and ankle surgery the investigators randomize the postoperative treatment with either perineurial sciatic nerve blocks with 0.5% Bupivacaine-Epinephrine with or without Dexamethasone.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
56
Sciatic nerve block
Adjuvant to perinerual block
Adjuvant to perinerual block
Department of Anesthesia, Aarhus University Hospital
Aarhus, Region Midt, Denmark
Painfree period (time until first pain sensation in operated foot)
Patients are closely monitored in the PACU until first pain sensation in the operated foot.
Time frame: 48 hours
Pain in the operated foot, measured on a numeric rating scale (0-10)
Pain score at rest, with the operated foot elevated on a pillow, ranging from 0 \[no pain\] to 10 \[worst possible pain\]
Time frame: Every 30 minuttes from the patient enters the PACU to the nerve block wears of
Sensibility score, measured with a hided tactile pinprick-sensation under the 3.rd toe on the operated foot
Sensitivy score measured on a 3 point scale 0 (no sensation) (impared sensation) 2 (full or normal sensation) compared to non-operated side
Time frame: Every 30 minutes from the patient enters the PACU to the sensations core reach 2
Total consumption of opioids during the length of stay
A cummulative calculation of equipotente doses of oral milligrams of morphin during the length of stay
Time frame: 48 hours
quality of sleep first night measured on a 3 point scale
Quality of sleep measured on the morning after operation. 0 (good sleep, no interruptions) by pain from operated foot) 1 (sleep, but interruption without pain) 2 (sleep but interrupted by pain from operated foot)
Time frame: hours
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