Long-Term Follow-Up and Weight Maintenance
What this domain tests
This domain covers lifelong surveillance, laboratory monitoring, weight-regain evaluation, and pregnancy and bone-health counseling - the content that separates a durable program from a surgical episode.
Schedule and labs
- Visits at 1, 3, 6, and 12 months, then annually; programs track follow-up rates as a quality metric.
- Annual labs: CBC, CMP, iron and ferritin, B12, folate, 25-OH vitamin D, PTH, calcium, albumin, A1C, lipids.
- DEXA around 2 years, especially after bypass, to assess bone density.
- Pregnancy: avoid conception for 12–18 months and screen micronutrients early in pregnancy.
Weight regain
- Commonly defined as regaining more than 10–15% from nadir; nadir usually occurs at 18–24 months.
- Evaluate anatomy (band slippage, pouch dilation, hiatal hernia), diet (grazing, liquid calories), and behavior before considering revision.
- Require at least 6 months of structured diet, activity, and behavioral support before operative revision.
Worked example
Four years after sleeve gastrectomy, a patient has regained 12 kg from her nadir and asks for revision. Reasoning: first document nadir and the %TWL trend, review a 24-hour recall for grazing and liquid calories, screen for depression and alcohol, and check for reflux or hiatal hernia. Only after a structured 6-month program without response should revision be discussed.
Traps
- Treating weight regain as nonadherence without evaluating anatomy.
- Stopping annual labs once weight stabilizes.
- Allowing pregnancy within a year of surgery.
- Offering revision before a documented structured attempt.