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Uso da ultrassonografia para avaliação do volume gástrico após ingestão de diferentes volumes de solução isotônica

2016; Elsevier BV; Volume: 67; Issue: 4 Linguagem: Inglês

10.1016/j.bjan.2016.07.003

1806-907X

Flora Margarida Barra Bisinotto, Aline de Araújo Naves, Hellen Moreira de Lima, Ana Cristina Abdu Peixoto, Gisele Caetano Maia, Paulo Pacheco Resende, Laura Bisinotto Martins, Luciano Alves Matias da Silveira,

Nutrition and Health in Aging

The current preoperative fasting guidelines allow fluid intake up to 2hours before surgery. The aim of this study was to evaluate the gastric volume of volunteers after an overnight fast and compare it with the gastric volume 2hours after ingestion of 200 and 500mL of isotonic solution, by means of ultrasound assessment.Eighty volunteers underwent gastric ultrasound at three times: after 8hours of fasting; 2hours after ingestion of 200mL isotonic saline, followed by the first scan; and on another day, 2hours after ingestion of 500mL of the same solution after an overnight fast. The evaluation was quantitative (antrum area and gastric volume, and the ratio of participants' gastric volume/weight) and qualitative (absence or presence of gastric contents on right lateral decubitus and supine positions. A p-value 0.05). Five volunteers (6.25%) had a volume/weight over 1.5mL.kg-1 at fasting and 2hours after ingestion of 200mL and 6 (7.5%) after 500mL. Qualitatively, the presence of gastric fluid occurred in more volunteers after fluid ingestion, especially 500mL (18.7%), although not statistically significant.Ultrasound assessment of gastric volume showed no significant difference, both qualitative and quantitative, 2h after ingestion of 200mL or 500mL of isotonic solution compared to fasting, although gastric fluid content has been identified in more volunteers, especially after ingestion of 500mL isotonic solution.