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314  Gastro-oesophageal Reflux Disease
        Table 49.2: Surgical steps in treating GORD.

         Mechanism preventing reflux  Surgical steps in treating GORD
         Oesophageal clearance  Secondary effect from treating oesophagitis;
                              however, a tight wrap can delay and cause
                              dysphagia.
         Length of intraabdominal   Mobilisation of oesophagus and achieving an
         oesophagus           intraabdominal length of at least 2–3 cm.
         Physiological lower   Repairing hiatus hernia. Reinforcing the HPZ
         oesophageal sphincter  with a wrap of stomach around the abdominal
                              oesophagus.
         Diaphragmatic pinch-cock   Tightening of hiatus with sutures. Repairing
         effect of crura      hiatus hernia.
         Angle of His         Reinforcing acute angle between stomach
                              and oesophagus (e.g., in Boix-Ochoa
                              fundoplication).
         Gastric emptying     Increased due to a decrease in stomach size.  Figure 49.2: Incision in zona pellicuda over caudate lobe of liver. The incision is
                                                               extended towards the crura, seen just superior to the incision.
                              ± Pyloroplasty increases emptying


        depending on the body habitus and size of the patient as well as the
        surgeon’s preference.)
        2. The upper portion of the gastrohepatic ligament above the left
        gastric vessels over the caudate lobe of the liver (zona pellucida of the
        lesser omentum) is incised (Figure 49.2) and extended cranially and
        medially towards the oesophageal hiatus.
        3. The crura of the diaphragm are then identified and dissected free
        while mobilising the oesophagus (incising the phreno-oesophageal
        ligament) to ensure an adequate intraabdominal length (usually 2–3
        cm, depending on the size of the child).
        4. If present, the sac of any hiatal hernia is excised, taking care not to
        enter the pleural cavity.
        5. A window posterior to the oesophagus is created by dissection   Figure 49.3: Second suture about to be placed to narrow the oesophageal
        between it and the crura. The posterior vagus (and anterior, if possible)   hiatus. The anterior vagus is visible above the oesophagus.
        are identified during the dissection and kept with the oesophagus. The
        fundus of the stomach should be visible through this window.
        6. The fundus of the stomach is freed from adhesions to the abdominal
        wall and spleen. Small peritoneal adhesions to the spleen are relatively
        common and need to be divided. Formal division of the short gastric
        vessels are not mandatory, but should be undertaken if needed to
        ensure a “floppy” wrap.
        7. The oesophageal hiatus is then narrowed by using nonabsorbable
        sutures to approximate the crura posterior to the oesophagus (Figure
        49.3). Usually, two sutures are needed, but this can vary. The crura
        are approximated enough to leave a small space between them and the
        oesophagus; this should be just enough for a fingertip.
        8. The proximal oesophagus is sutured to the diaphragm by using a
        nonabsorbable suture to anchor it in place. This is optional, but adds
        stability to the oesophagus in the abdomen.
        9. The fundus is then guided behind the oesophagus, ensuring that it is
        not under tension when wrapped around the lower oesophagus and that   Figure 49.4: Completed floppy Nissen fundoplication.
        it is not twisted.
        10. A floppy wrap is then constructed by using the fundus of the stomach,
        using three rows of nonabsorbable sutures placed widely on the fundus
        (Figure 49.4). These sutures can also be passed superficially through the
        oesophagus between the stomach ends (stomach-oesophagus-stomach).
        11. The looseness of the wrap is tested by gently lifting the wrap off
        the oesophagus (or a gentle shoe-shining manoeuvre).
        12. If required, a gastrostomy can be constructed in a Stamm fashion at
        the junction of the body and antrum.
        13. A pyloroplasty is not routinely performed by this author, even in
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