Study: NCT05592496

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Bilateral retromuscular rectus sheath block catheters usage for early postoperative analgesia after laparotomic gastrectomy.
Description: After surgery patients in the Block group receives continuous 0.125% (10-12 mg/h) bupivacaine infusion through rectus sheath catheters for 72 h in addition to fentanyl i/v infusion on postoperative day 0, and ketorolac or trimeperidine injection on postoperative day 1-2 if necessery. Patients in the Control group receives NaCl 0,9% infusion and fentanyl i/v infusion on postoperative day 0 and ketorolac or trimeperidine injection on postoperative day 1-2 if necessery Pain intensity is going to be assessed in both groups using 0-100 mm Visual Analog Scale (VAS) at 24, 48 and 72 hour intervals after surgery at rest and during movement (by asking the patient to bend legs). Postoperative complications, hospital stay, comorbidities, the time taken to start walking after the surgery, bowel movements (time until first stool) were all examined.

Intervention type: PROCEDURE
Group type: PLACEBO_COMPARATOR
Intervention: Bilateral retromuscular rectus sheath block catheters usage for early postoperative analgesia after laparotomic gastrectomy.
Description: After surgery patients in the Block group receives continuous 0.125% (10-12 mg/h) bupivacaine infusion through rectus sheath catheters for 72 h in addition to fentanyl i/v infusion on postoperative day 0, and ketorolac or trimeperidine injection on postoperative day 1-2 if necessery. Patients in the Control group receives NaCl 0,9% infusion and fentanyl i/v infusion on postoperative day 0 and ketorolac or trimeperidine injection on postoperative day 1-2 if necessery Pain intensity is going to be assessed in both groups using 0-100 mm Visual Analog Scale (VAS) at 24, 48 and 72 hour intervals after surgery at rest and during movement (by asking the patient to bend legs). Postoperative complications, hospital stay, comorbidities, the time taken to start walking after the surgery, bowel movements (time until first stool) were all examined.

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Catheter insertion technique by using special tube t
Description: By using special tube, it is possible to locate the catheters in retromuscular space, where they are close to cutaneous nervs

Intervention type: DEVICE
Group type: PLACEBO_COMPARATOR
Intervention: Catheter insertion technique by using special tube t
Description: By using special tube, it is possible to locate the catheters in retromuscular space, where they are close to cutaneous nervs

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Connection of catheters bilateraly to easy pump system,
Description: Connection of catheters, which are inserted in to retromuscular space, to ensure continuous receiving of Bupivacaine fluid for analgesia. Easy pump system provides continous receiving of bupivacaine fluid infusion speed - 5ml per hour

Intervention type: PROCEDURE
Group type: PLACEBO_COMPARATOR
Intervention: Connection of catheters bilateraly to easy pump system,
Description: Connection of catheters, which are inserted in to retromuscular space, to ensure continuous receiving of Bupivacaine fluid for analgesia. Easy pump system provides continous receiving of bupivacaine fluid infusion speed - 5ml per hour

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: VAS scale for pain control
Description: By using Visual Analog scale of pains, the pain score is fixed

Intervention type: DIAGNOSTIC_TEST
Group type: PLACEBO_COMPARATOR
Intervention: VAS scale for pain control
Description: By using Visual Analog scale of pains, the pain score is fixed