Enteral nutrition intolerance, manifested in delayed gastric emptying and high gastric residual, is a common problem in critically ill patients in intensive care, with adverse consequences on patients' outcomes. A decrease in the levels of the ghrelin hormone in these patients may contribute to this problem. The gastric residual test (GRV) is used to assess enteral absorption and gastric motility, but the traditional methods can lead to inaccuracy and waste of resources. In recent years, the use of ultrasound (PoCUS) to assess GRV has developed, but its effect on the rate of reaching the caloric goal has not yet been evaluated.

Inclusion Criteria: Adult intensive care patients who recieve enteral nutrition via nasogastric tube -

Exclusion Criteria: 1. Pregnant patient 2. History of bariatric or other gastric surgery 3. Post-operative patients with sub-costal incision 4. Diaphragmatic hernia 5. Patients who recieve parenteral nutrition 6. Technically difficult US exam

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