Ultrasound guidance characteristics and efficiency of suprazygomatic maxillary nerve blocks in infants: a descriptive prospective study
Abstract
Bilateral suprazygomatic maxillary nerve blocks approach improves pain relief after palate surgery. We report the feasibility and efficiency of ultrasound-guided suprazygomatic maxillary nerve blocks in cleft palate repair in children. Twenty-five children scheduled to undergo surgical cleft palate repair were included. Ultrasound-guided suprazygomatic maxillary blocks were performed according to landmarks previously defined. The ultrasound probe was located optimally over the maxilla and under the zygomatic bone to visualize the pterygopalatine fossa. 0.15·ml·kg(-1) of 0.2% ropivacaine was injected bilaterally. Feasibility of block, spread of local anesthetic, pain scores and side effects were noted. Fifty ultrasound-guided suprazygomatic maxillary nerve blocks were performed in 25 children. The needle movement was seen in all cases using an out-of-plane approach. The spread of LA was clearly observed in 94% (47/50) of cases. A poor ultrasound imaging was found in 4% (2/50), and the spread of LA was not identified in 2% of case (1/50). The median time to perform the block was 56 s (35-120 s). The median pain scores and consumption of nalbuphine were low during the study period. 80% of patients did not require continuous opioid...Continue Reading
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