Blood sugar swings after bariatric surgery may forecast baby size

NCT ID NCT07731165

Completed Knowledge-focused Sponsor: Centro Hospitalar Universitário de Santo António Source: ClinicalTrials.gov ↗

First seen Jul 28, 2026 · Last updated Jul 29, 2026 · Updated 1 time

Summary

Women who become pregnant after weight-loss (bariatric) surgery have a higher chance of delivering smaller-than-expected babies. This study tests whether tracking blood sugar fluctuations with a continuous glucose monitor during each trimester can help predict which babies will be small. Researchers will follow 47 pregnant women who had bariatric surgery, using a skin sensor to record glucose levels and comparing those patterns to the baby's birth weight.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: intermittently scanned continuous glucose monitoring (isCGM) device
What this could lead to: If specific glucose patterns are linked to smaller babies, doctors may be able to identify at-risk pregnancies earlier and adjust care.
What could go wrong: This is a small, single-center observational study. It can show associations but cannot prove cause and effect, and results may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

dumping syndrome fetal growth restriction hypoglycemia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

GLYCEMIC VARIABILITY HYPOGLYCEMIA AFTER GASTRIC BYPASS SMALL GESTATIONAL AGE (SGA)

Contacts and locations

Locations

CHUStAntónio - Centro Materno Infantil Norte (CMIN)

Porto, Porto District, 4050-651, Portugal

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