Mr. Michael Booth - Laparoscopic Obesity Surgeon Your Practice Online
Mr. Michael Booth : 09 623 3098 / 0508 934 448
Meet Mr. Michael Booth
Services & Procedures
Obesity Surgery

Open Gastric Bypass

Here a small stomach pouch is created to restrict food intake. Next, a Y-shaped section of the small intestine is attached to the pouch to allow food to bypass the lower stomach, the duodenum (the first segment of the small intestine), and the first portion of the jejunum (the second segment of the small intestine).

Open gastric bypass surgery


  • "Dumping syndrome" if sweets and chocolates taken 
  • Good operation for sweet eaters 
  • Long track record
  • Tend to lose significantly more weight than lap. gastric band in our experience
  • More successful then lap band in keeping the weight off
    long term
  • Quicker improvement with sugar control in diabetics
  • No adjustments


  • Open surgery
  • Risk of incisional hernia 20%
  • Longer recovery time 
  • Possibility of a staple or anastomotic leak 
  • Minor late weight regain 10-20% after 2-5 yrs 
  • Nutritional/ mineral supplements required

Residual stomach capacity: 10-15 mls

Estimated weight loss: 60-70% EWL over 2 years.

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