Held back by a water bottle: How SGH is helping bariatric patients heal better at home

What if post-surgery recovery could feel less clinical and more comforting? At Singapore General Hospital (SGH), the Bariatric Surgery team set out to reimagine care with a clear goal: help patients return home sooner, without compromising outcome or safety.

For many bariatric surgery patients at SGH, the biggest obstacle to going home wasn’t pain, complications or recovery setbacks — it was a water bottle. A longstanding requirement to drink 1.5 litres of fluids a day meant that otherwise stable patients stayed in hospital for days, simply to prove they could sip enough. That single rule sparked a rethink that is now transforming how patients recover after weight loss surgery.

Today, these patients spend less time in hospital beds and more time recovering in the comfort of their own homes. This shift didn’t happen overnight. It was driven by a multidisciplinary team willing to question long-held assumptions about what “safe recovery” really looks like.

Questioning a long-standing practice

Dr Lim Chin Hong, Senior Consultant, Upper GI & Bariatric Surgery, who led the project, noticed a troubling pattern.

“We found that many of our patients were staying more than 24 hours in hospital not because they had complications, but because we needed to monitor their fluid intake,” he explains. “They were medically stable, but our traditional approach required them to be able to drink 1 to 1.5 litres of fluid daily before discharge — and that was keeping them in hospital for days.”

The data backed this up. Previously, only about a third of bariatric surgery patients could go home within a day of their procedure. The rest faced extended stays, often simply waiting to meet fluid intake requirements.

The rule had sound medical reasoning. After bariatric surgery, patients are at higher risk of dehydration because their stomach capacity is significantly reduced, and nausea or vomiting is common.

“The 1 to1.5 litre requirement was our safety measure,” says Dr Lim. “It ensured patients could maintain adequate hydration before going home.”

Dr Lee Phong Ching, Senior Consultant, Endocrinology, who co-led the project, adds, “We were particularly cautious about complications like acute kidney injury from dehydration, which was one of the most common reasons for readmission. It was a conservative approach. But it meant patients who were otherwise ready to go home had to stay in hospital just to prove they could drink enough fluids.”

The SGH Bariatric Surgery Value-Driven Care team who made all this possible.

A simple but revolutionary idea

The breakthrough came from asking a fundamental question: What if patients could receive the monitoring they needed, without staying in hospital?

The answer was an innovative, intravenous (IV) hydration clinic at the SGH Obesity Centre. Instead of remaining warded to ensure adequate fluid intake, patients could now be discharged early and return to the outpatient clinic if they needed IV fluids.

“The concept is straightforward,” says Nurse Clinician Angelina Foo, who helped implement the initiative with the support of nurses from Specialist Outpatient Clinic at SingHealth Tower, Level 3. “If a patient feels nauseous or isn’t drinking enough fluids at home, they can contact me to make an appointment. If the patient is dehydrated and requires IV hydration, we can give them IV fluids over four to six hours, monitor their condition, and they go home the same day. No hospital admission required.”

A month later, the team took the idea further by admitting patients undergoing sleeve gastrectomy to the already established Short Stay Ward. This is the most common bariatric procedure, where about 80 per cent of the stomach is removed, leaving a banana-shaped ‘sleeve’. Patients assessed to be at low risk for complications could now be discharged the morning after surgery, rather than staying for several days.

More than just numbers

The impact has been significant. Today, about three quarters of bariatric surgery patients at SGH go home within 24 hours of their procedure — more than double the previous rate.

Crucially, safety has not been compromised.

“We’ve actually seen a decrease in readmission rates,” says Dr Lee. “Because patients can access the hydration clinic early, we’re able to intervene before their condition worsens enough to require emergency department visits.”

Patient feedback has been equally encouraging.

“The change in patient satisfaction has been incredible,” notes Dr Lim. “Patients tell us they sleep better at home, they’re more comfortable, and they can start their recovery journey in familiar surroundings with family support.”

The benefits extend beyond patient experience. With about 200 bariatric surgeries performed annually at SGH, the initiative saves an estimated 200 hospital bed-days each year — freeing up capacity for other patients who need inpatient care.

A win for staff, too

The changes have also transformed the working experience for healthcare staff. Shorter hospital stays mean less routine monitoring and more time focused on patients with complex needs.

“It’s about working smarter, not harder,” says NC Angelina. “And seeing patients smiling as they leave so soon makes the work incredibly rewarding. It feels like we’re giving them back something precious — time at home.”

Looking ahead

The team continues to refine the programme, closely monitoring outcomes to ensure patient safety remains paramount. They are also exploring how similar principles could be applied to other surgical pathways.

“This experience taught us that some of the best innovations come from questioning why we do things a certain way,” reflects Dr Lim. “By putting patients first and thinking creatively about how we deliver care, we found a solution that benefits everyone.”

As healthcare systems worldwide grapple with capacity constraints and rising expectations around patient experience, SGH’s bariatric surgery initiative offers a compelling example of how thoughtful innovation can transform care — without compromising safety.

For patients considering bariatric surgery, the message is clear: recovery doesn’t have to mean long hospital stays. Sometimes, home truly is where healing happens best.

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