Final answer:
The patient should fast for at least 6 hours before a TEE to ensure an empty stomach and minimize the risk of complications. Following fasting instructions is crucial for a safe and successful procedure.
Step-by-step explanation:
The patient should stop oral intake for at least 6 hours before a trans esophageal echo cardiogram (TEE) to ensure an empty stomach. This is important because TEE requires the insertion of a probe into the oesophagus, which can be complicated if there is food or liquid in the stomach.
The fasting period reduces the risk of aspiration of gastric contents during the procedure. Aspiration occurs when stomach contents are regurgitated into the lungs, potentially leading to serious complications such as pneumonia or respiratory distress.
It is crucial for patients to follow the specific fasting instructions provided by their healthcare provider to ensure a safe and successful TEE procedure.