Comparative Study of Two Different Techniques to Perform TAP-blocks

The TAP is a space between the muscle layers of the abdominal wall that houses nerves supplying the abdominal skin. Injecting the local anesthetic ropivacaine into this space will block these nerves and prevent pain following c-section. The investigators will compare two different approaches to injecting the local anesthetic in this space. Conventionally, the block is done after surgery is completed and the abdomen is closed. The anesthesiologist introduces a needle through the abdominal wall skin under ultrasound guidance to reach the TAP space and the drug is injected. Since the TAP layer is one of the deeper layers of the abdominal (belly) wall and is closer to the inside of the abdomen than to the outside (skin), injecting from the inner aspect of the abdominal wall during the surgery is easier and quicker to perform than the conventional block and does not require ultrasound guidance as there is no risk of injury to abdominal organs like the liver. With this research the investigators attempt to prove that surgically administered TAP blocks take 25% less time to perform compared to the conventionally administered TAP block for post cesarean section pain relief. Surgical TAP blocks are also more cost-effective as in addition to reduced OR time, they are safer and do not require skilled operator and specialized equipment. Secondary outcomes will include total time spent in the Operating room, presence and severity of postoperative pain, time to first request for pain medication, total postoperative narcotic consumption in 48 hours after surgery and side effects.