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Recruiting

NCT Number: NCT06198790

Postoperative Anemia After Bariatric Surgery

To investigate the real incidence of short and long-term anemia after bariatric surgery, and explore the risk factors.

Recruiting

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Key information

Conditions

Anemia Bariatric Surgery Candidate Hematologic Diseases Hemic and Lymphatic Diseases

Age range

16 year–70 year

Sex eligibility

All sexes

Study type

Observational

Primary location

About this study

This study aims to investigate the real incidence of short and long-term anemia after bariatric surgery and explore the risk factors.

Who can participate

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patients who will undergo sleeve gastrectomy or Roux-en-Y gastric bypass
  • Aged between 16 and 70 years
  • Patients who is not diagnosed as anemia at baseline

Exclusion criteria

  • Patients who have anemia at baseline

Treatment and study plan

Primary outcomes

  1. Incidence of anemia after 1, 3, 5, 10 years

    Time frame: 10 years

    Incidence of anemia after 1, 3, 5, 10 years

Secondary outcomes

  1. Incidence of anemia-related nutrient deficiencies

    Time frame: 10 years

    Incidence of folate, ferritin, vitamin B12, and iron deficiencies

  2. Hazard ratios for the risk factors of postoperative anemia

    Time frame: 10 years

    Hazard ratios for the risk factors of postoperative anemia will be calculated by Cox regression model.

Study contacts

Contact information is provided by the study sponsor or research team.

Hua Meng, M.D.

CONTACT

[email protected]

+8618611457779

Yuntao Nie, M.D.

CONTACT

[email protected]

+8618611835860

Sponsors and collaborators

Lead sponsor

China-Japan Friendship Hospital

Other

Registry information

Important dates

Study start
2024
Primary completion
2026
Study completion
2027
First posted
Jan 10, 2024
Registry last updated
Aug 3, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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