Examining how preoperative anemia affects recovery after bariatric surgery

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study investigates the relationship between preoperative anemia and the occurrence of anemia and nutrient deficiencies one year following bariatric surgery. It focuses on patients who have undergone sleeve gastrectomy or Roux-en-Y gastric bypass and evaluates various nutrient levels, including ferritin, vitamin B12, folate, and transferrin saturation. The study aims to gather comprehensive follow-up data to understand the long-term effects of preoperative anemia on postoperative outcomes.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Patients who underwent bariatric surgery (sleeve gastrectomy and Roux-en-Y gastric bypass)
* Age between 16 and 70 years
* Patients who have complete 1-year follow-up data

Exclusion Criteria:

* Baseline renal failure
* Vegetarian
* Postoperative bleeding (it was defined as a drop in hemoglobin levels \> 3 g/dL or a confirmed blood loss requiring treatment after surgery)

Where it's running

• Yuntao Nie
  Beijing, China Recruiting

Study contacts

• Principal investigator: Yuntao Nie, M.D. — China-Japan Friendship Hospital
• Study coordinator: Yuntao Nie, M.D.
• Email: nytnyt1231@163.com
• Phone: +8618611835860

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.