Sleeve Gastrectomy Before and After

Sleeve Gastrectomy

Sleeve gastrectomy is a surgical procedure where part of the stomach is removed and the remaining portion is reshaped into a narrow tube. This reduces the amount of food a patient can consume, leading to rapid weight loss.

As part of the bariatric treatment programme, patients also receive support from a:

  • Bariatric specialist
  • Dietitian
  • Psychologist

Care is provided both during and after hospitalisation.

Sleeve Gastrectomy Before and After
Book A Consultation
Back to Obesity Treatments

Sleeve gastrectomy is a method primarily recommended for patients with a Body Mass Index (BMI) between 35 and 40 who also suffer from obesity-related conditions such as hypertension, sleep apnoea, or type 2 diabetes. For patients with a higher BMI, this procedure is also advised, particularly when obesity is accompanied by significant risk factors that prevent the performance of more advanced surgical interventions. In such cases, a staged approach is often adopted, with sleeve gastrectomy recommended as the first step. Once significant weight reduction is achieved and risk factors are minimised, a second stage, usually a gastric bypass, may be considered. Sleeve resection is also a suitable solution for individuals diagnosed with bowel diseases or those who have previously undergone intestinal surgery and are expected to have extensive adhesions. This type of surgery is also recommended for patients at extreme age groups, particularly the very young or elderly. The procedure is generally not advised for patients with gastro-oesophageal reflux disease.

Who is sleeve gastrectomy recommended for?

BMI 35–40

with hypertension, sleep apnoea, or type 2 diabetes

Higher BMI

when advanced surgery is too risky (first-stage option)

Bowel conditions

or prior intestinal surgery with adhesions

Extreme ages

very young or elderly patients

Note: generally not advised for patients with gastro-oesophageal reflux disease (GORD/GERD).

What does sleeve gastrectomy involve?

  • Removal along the greater curvature; creation of a slim gastric sleeve
  • Resulting pouch capacity: 150–250 ml
  • Reduced production of ghrelin (hunger hormone)
  • Significant excess-weight loss within 6–12 months
  • Early diet: blended/soft and very small portions

60–90 min

Operation time

Up to 3 days

Hospital stay

~50%

Excess-weight loss in 6–12 months

How to prepare for the procedure?

  • Complete blood count, blood group, Rh factor
  • Biochemistry: sodium, potassium, glucose
  • ECG to assess heart function
  • Gastroscopy to evaluate stomach lining
  • Additional tests based on history and surgeon’s advice

What are the possible complications following the procedure?

Although sleeve gastrectomy is a safe and well-established procedure, some complications may occur:

  • Risk of bleeding at the site where the stomach fragment was removed
  • Potential leakage from the resection site requiring medical intervention
  • Rare risk of spleen injury during surgery
  • Nausea and vomiting as the body adapts to the new stomach size
  • Gastro-oesophageal reflux and oesophagitis, sometimes requiring diet changes or medical treatment

Your journey step by step

Consultation

eligibility assessment and treatment planning.

Pre-operative test

bloods, ECG, gastroscopy.

Surgery

laparoscopic sleeve gastrectomy (60–90 minutes).

Hospital stay

recovery, mobilisation, and diet start (up to 3 days).

Follow-up care

staged diet over 4–6 weeks, with long-term specialist support.

Follow-up care

staged diet over 4–6 weeks, with long-term specialist support.

Benefits of sleeve gastrectomy

Sleeve gastrectomy offers several important advantages for patients:

  • Short procedure → less time under anaesthesia, lower surgical risk.
  • Rapid weight loss → up to 50% of excess body weight lost in 6–12 months.
  • Health improvements → reduced risk of hypertension, diabetes, and sleep apnoea.
  • Lower hunger levels → reduced ghrelin makes it easier to adopt healthier habits.
  • Sustainable results → long-term weight control with medical and nutritional support.

What does post-operative care and recovery involve?

Recovery after sleeve gastrectomy is generally quick, allowing patients to regain mobility within hours after the procedure. Most patients can stand and walk on the same day, which helps reduce the risk of complications.

For the first two weeks, a liquid or blended diet must be followed to allow the stomach to heal properly. Full recovery and a return to normal daily activities typically take around two weeks, although adhering strictly to dietary guidelines and gradual reintroduction of solid foods are essential for long-term success.

Back to Obesity Treatments

Disclaimer
*The Pax Medicus website provides information for guidance only and does not constitute medical advice, diagnosis, or treatment. Pax Medicus does not provide healthcare services and is not a substitute for consultation with a qualified medical professional. Always seek advice from your physician regarding any medical condition. Prices shown are indicative only and subject to confirmation by the healthcare provider. This is the official website of Pax Medicus; we do not operate through agents or third-party sites.

BOOK YOUR CONSULTATION TODAY

Simply fill in the form below and our team will get back to you as soon as possible.