Conditions: Postoperative Pain
Keywords: Ropivacaine C-Section Analgesia Tap Block
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 51
Healthy volunteers: yes

Brief summary:
With this research the investigators hope to determine the lowest dose of ropivacaine used in transversus abdominis plane (TAP) blocks that can effectively treat pain in women after cesarean section (c-section).

Detailed description:
With this research the investigators hope to determine the lowest dose of ropivacaine used in transversus abdominis plane (TAP) blocks that can effectively treat pain in women after cesarean section (c-section). The TAP is a space between the muscle layers of the abdominal wall that houses nerves supplying the abdominal skin. The investigators will inject the local anesthetic ropivacaine into this space to freeze these nerves and prevent pain following c-section. The investigators will compare three different doses of ropivacaine (0.5%, 0.25%, 0%) to determine the lowest dose that controls pain with the fewest side effects. Participants in this study will receive 0.5% (Group 1), 0.25% (Group 2), or 0% (Group 3) ropivacaine TAP blocks to control pain after c-section. At 2, 6, 12, 24, and 48 hours after cesarean section visual analog pain scores (VAS) for pain on movement, pain at rest, and pain with cough will be collected along with the time to first postoperative analgesic request, patient satisfaction scores, and patient demographics. The analgesic regimen will be considered effective if it provides lower average visual analog scores for pain with movement. Secondary outcomes will be higher patient satisfaction, better pain control, fewer postoperative analgesic requests, and fewer side effects.

Arms:
arm 1: Patients will receive 0.5% Ropivacaine for the TAP block Procedure: Ultrasound guided TAP BLOCK Drug: 0.5% ropivacaine 20ml of 0.5% ropivacaine is used to perform the TAP block Other Names: •Naropin arm 2: Patients will receive 0.25% for the TAP block Procedure: ULTRASOUND GUIDED TAP BLOCK Drug: 0.25% ropivacaine 20ml of 0.25% ropivacaine is used to perform the TAP block Other Names: •Naropin arm 3: Patients will not receive a TAP BLOCK

Interventions: intervention 1: Ropivacaine
Intervention descriptions: intervention 1: Using 2 Different Concentrations of Ropivacaine in Tap Block for Postoperative Analgesia for C-Section Patients

Protocol document: