Nissen Fundoplication

Chapter 6


Nissen Fundoplication






Preoperative Studies


Preoperative studies include upper endoscopy, upper gastrointestinal (GI) series, esophageal manometry, and pH testing. Esophageal impedance may help identify patients with pathologic nonacid reflux. Patients with chronic nausea and emesis may benefit from a gastric emptying study to ascertain whether gastroparesis contributes to their symptomatology.


Upper endoscopy can reveal intraluminal pathology that can alter surgical decision making and can help ascertain anatomic changes that would impact the operation for GERD. The most common anatomic abnormality seen in this setting is the sliding, type I hiatal hernia (Fig. 6-4). Upper endoscopy can also reveal a shortened esophagus. The upper GI series also helps define anatomic abnormalities and is useful when more complex hiatal hernias are noted (types II-IV). Testing for acid exposure, nonacid reflux, and assessment of esophageal motility are also important nonimaging modalities that help in preoperative decision making.




Anatomy for Esophageal Mobilization


Adequate esophageal mobilization is important to ensure that sufficient esophagus is present within the abdomen for fundoplication. The end goal of these steps is to confirm at least 4 to 5 cm of esophagus below the diaphragm with circumferential mobilization of the esophagus from surrounding tissues and structures.



Diaphragmatic Crura (Superior and Inferior Views)


In most patients the fibers of the right crus of the diaphragm encircle the esophagus, making the right and left pillars of the right crus the pertinent structures of the esophageal hiatus (Fig. 6-5, A). Abdominal exposure of the right crus is usually obtained by retraction of the left lobe of the liver anteriorly and by incision of the filmy pars flaccida. The right pillar is usually readily identified and bluntly separated from the esophagus (Fig. 6-5, B). If a sizable hiatal hernia is encountered, the plane between the hernia sac and mediastinal structures is developed while preserving healthy endoabdominal fascia overlying the pillars of the crus.


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Aug 12, 2016 | Posted by in ANATOMY | Comments Off on Nissen Fundoplication

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