DETERMINING GASTRIC EMPTYING TIME IN ELDERLY USING ULTRASOUND ASSOCIATED WITH PREOPERATIVE FASTING TIME

Background:

Gastric contents aspiration is the most crucial complication of general anaesthesia. There are limited studies to assess the gastric volume ultrasound to clarify an appropriate fasting time before surgery. Gastric content will examine after a traditional Turkish breakfast with ultrasound.

Methods:

After the first ultrasound examination by asking 8 hours fasting ,gastric emptying time(GET) was determined by serial gastric ultrasound examinations with two ultrasonographers and GET identified by real time USG evaluations in every 1 hour.

All ultrasound assessments on volunteers will made both in the supine position and right lateral decubitus (RLD) from the epigastric area by using a convex probe.

This study is the first one which examine gastric emptying time after a standard Turkish breakfast in over 65 years Turkish population by measuring antral cross section area (CSA) using noninvasive ultrasound.

Preoperative fasting has always been problematic in preoperative patients because of the pulmonary aspiration hazard and discomfort of prolonged fasting. Although stomach scintigraphy has been accepted as a gold standard for imaging method of evaluating gastric content; recently, ultrasound is being a simple, efficient, available and non invasive alternative. Preoperative fasting is especially difficult in elderly because of comorbidities, dehydration, drug therapies. Therefore, in this study gastric emptying time will be identified after a standard Turkish breakfast in over 65 years old Turkish population to clarify fasting time, measuring antral cross section area (CSA) by using non invasive ultrasound for the first time. Ultrasound assessments on volunteers will be made both in the supine position and right lateral decubitus (RLD) from the epigastric area by using a convex probe. After visualization of gastric antrum according to landmarks such as abdominal aorta, superior mesenteric artery and the left lobe of liver; antrum will measured in two sagittal planes: craniocaudal (CC) and anteroposterior(AP) diameters. Gastric emptying time will be identify by real time usg done by 1 hour intervals.This is the first study with ultrasound evaluation of gastric emptying time in Turkish population after a traditional Turkish breakfast.

Inclusion Criteria:

• over 65 years of age who have not any comorbidities

Exclusion Criteria:

• gastrointestinal and functional disorders, previous oesophageal or upper abdomen surgery.

over 65 years of age Turkish volunteers without comorbity

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