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ESRA19-0512 Determination of the gastric emptying time and effect on blood sugar levels after consumption of coconut water, sugarcane juice, and plain water among healthy volunteers
  1. FA Manila-Caliso and
  2. JD Nalumen
  1. Corazon Locsin Montelibano Memorial Regional Hospital, Department of Anesthesiology, Bacolod City, Philippines


Background and aims The fasting protocol of enhanced recovery after surgery (ERAS) recommends a carbohydrate loading 2 hours prior to surgery to prevent insulin resistance. In this study, both coconut and sugarcane juices were used as alternative carbohydrate drinks in a setting wherein the standard solution is not available.

Methods After approval from the Research Ethics and Review Committee (RERC), 45 healthy adult volunteers were enlisted to ingest coconut water, sugarcane juice, and plain water (control) for 3 separate days. Before and after ingestion of each drink, both the gastric emptying time and blood glucose levels were measured.

Results The majority of the gastric contents of the participants were emptied within 60 minutes in coconut water group (64.44%), 90 minutes in sugarcane juice group (44.44%), and 30 minutes in the control group (55.56%). Overall, the gastric contents in these 3 groups returned to baseline levels (< 25 ml) within the 120-minute mark. The 2-hour postprandial blood glucose levels of these 3 solutions remained within the normal reference range (< 140 mg/dL): coconut water (89 – 106 mg/dL), sugarcane juice (94 – 108 mg/dL), and plain water (90 – 107 mg/dL).

Abstract ESRA19-0512 Table 1

Gastric volume in milliliter (mL) at baseline (B), 30 mintes (30), 60 minutes, 90 minutes (90), and 120 minutes (120) after consumption of coconut water, sugercane juice, and plain water

Abstract ESRA19-0512 Table 2

Preprandial blood sugar (BS) and postprandial blood sugar (BS) levels in milligram per decilliter (mg/dL)

Conclusions Both coconut water and sugarcane juice conform to the safety standard of presenting a half-life of no more than 120 minutes from consumption, therefore, they may be safely given preoperatively affording protection against insulin resistance with minimal risk for bronchoaspiration during anesthesia.

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