 Two #12-French red rubber Robinson catheters were placed, 1 in each nasal passage, and brought out through the oral cavity and clamped over a dental gauze roll placed on the upper lip to provide soft palate retraction. 
Two # 12 - French red rubber Robinson catheters were placed , 1 in each nasal passage , and brought out through the oral cavity and clamped over a dental gauze roll placed on the upper lip to provide soft palate retraction .