PFinal answer:
Nissen fundoplication is a surgical procedure performed to correct gastroesophageal reflux disease (GERD) by wrapping the upper part of the stomach around the lower part of the esophagus.
Step-by-step explanation:
Nissen fundoplication is a surgical procedure performed to correct gastroesophageal reflux disease (GERD). GERD is a condition where stomach acid flows back up into the esophagus, causing symptoms such as heartburn, regurgitation, and difficulty swallowing. Nissen fundoplication involves wrapping the upper part of the stomach (fundus) around the lower part of the esophagus to strengthen the lower esophageal sphincter and prevent the stomach acid from refluxing.