The aim of this study is to investigate whether it is possible to prolong time to first opioid with the TQL block by inserting catheters bilaterally, providing continuous analgesia, in patients undergoing elective CS. Our hypothesis is that it will be possible to significantly extend time to first opioid with the blockade by 66.6%, increasing it from a mean of 5.6 hours to a mean of 10 hours.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
32
2 x 30 ml ropivacaine 0,2% and an elastomere pump with 200 ml ropivacaine 0,2%, infusion rate 8 ml/hour
2 x 30 mL isotonic saline and an elastomere pump with 200 ml isotonic saline, infusion rate 8 ml/hour
Department of anaesthesiology
Roskilde, Denmark
Time to first opioid
The time from catheters placement to the administration of opioids
Time frame: 24 hours postoperatively
Pain intensity (NRS 0-10/10)
NRS (numeric rating scale) score in the study period at 3, 6, 9, 12 and 24 hours postoperatively. In addition, NRS score will be recorded electronically on all morphine administrations, since all patients must enter their NRS score on the Patient-Controlled Analgesia (PCA) pump display prior to administration of the PCA boluses. NRS is a pain scale where the patient gives her pain a number from 0-10, where 0 is no pain and 10 is the worst pain imaginable.
Time frame: 24 hours postoperatively
Total morphine consumption.
Morphine consumption at 3, 6, 9, 12 and 24 postoperative hours (data from PCA pump and patient medical record).
Time frame: 24 hours
Catheter displacement.
Frequency of displacement of catheters (early displacement evaluated after 2 hours (T2), late displacement evaluated after 24 hours (T24)).
Time frame: 24 hours
Patient satisfaction with application of the catheters.
NRS 0-10/10 during placement of catheters
Time frame: 24 hours
The degree of morphine-related side effects (PONV, itching, fatigue, etc.).
On a scale from 0-3, where 0 is none, 1 is mild, 2 is moderate and 3 is severe.
Time frame: 24 hours
Time from operation to ambulation.
Time from operation to ambulation.
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Time frame: 24 hours