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Table 5 Comparison of preoperative gastric volume among groups

From: Effect of low-concentration carbohydrate on patient-centered quality of recovery in patients undergoing thyroidectomy: a prospective randomized trial

   F Group PW Group CH Group P value
CSA (cm2) Supine position 4.01 (0.90) 3.92 (0.77) 3.82 (0.84) 0.903
Right lateral decubitus (RLD) 4.76 (0.56) 4.68 (0.80) 4.42 (0.85) 0.218
GV (ml)   40.00 ± 17.31 37.21 ± 14.94 37.73 ± 16.08 0.734
  1. Data are presented as mean ± SDs, M (IQR). Details of the groups are shown in Table 1
  2. CSA (cm2) = π × AP × CC/4, GV (ml) = 27.0 + 14.6 × right-lat CSA − 1.28 × age
  3. AP The anteroposterior diameter of the gastric antrum, CC The craniocaudal diameter of the gastric antrum