Postoperative Anemia After Bariatric Surgery | NCT06198790

Studies
Postoperative Anemia After Bariatric Surgery

NCT06198790

Sponsor

China-Japan Friendship Hospital

Status

Recruiting

Last Update Posted

Aug 3, 2025Actual

Enrollment

400Estimated

Phase

Not provided

Conditions

Anemia
Bariatric Surgery Candidate

Interventions

Not provided

Countries

China

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

Status Module

Record Verification Date

Jul 2025

Overall Recruitment Status or Expanded Access Status

Recruiting

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

Feb 1, 2024Actual

Primary Completion Date

Dec 31, 2026Estimated

Completion Date

Dec 31, 2027Estimated

First Submitted Date

Dec 27, 2023

First Submission Date that Met QC Criteria

Dec 27, 2023

First Posted Date

Jan 10, 2024Actual

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Jul 31, 2025

Last Update Posted Date

Aug 3, 2025Actual

Oversight Module

Has Data Monitoring Committee (DMC)

Not provided

Is FDA Regulated Drug

Is FDA Regulated Device

Is Unapproved Device

Not provided

Pediatric Postmarket Surveillance of a Device Product

Not provided

Product Exported from US

Not provided

FDAAA801 Violation

Not provided

Description Module

Brief Summary

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

Detailed Description

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

Design Module

Study Type

Observational

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Yes

Target Follow-Up Duration

10 Years

Phases

Not provided

Interventional Study Design

Allocation

Not provided

Intervention Model

Biospecimen

No data available

No data is available for this block.

Enrollment

400Estimated

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Incidence of anemia after 1, 3, 5, 10 years	Incidence of anemia after 1, 3, 5, 10 years	10 years

Secondary Outcomes

Measure	Description	Time Frame
Incidence of anemia-related nutrient deficiencies	Incidence of folate, ferritin, vitamin B12, and iron deficiencies	10 years
Hazard ratios for the risk factors of postoperative anemia	Hazard ratios for the risk factors of postoperative anemia will be calculated by Cox regression model.

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

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

Accepts Healthy Volunteers

Not provided

Sex

All

Sex/Gender Based

Not provided

Sex/Gender Description

Not provided

Minimum Age

16 Years

Maximum Age

70 Years

Standard Ages

ChildAdultOlder Adult

Study Population

Patients without anemia at baseline who will undergo bariatric surgery will be included.

Sampling Method

Probability Sample

Contacts/Locations Module

Central Contacts

Name	Role	Phone	Extension	Email
Yuntao Nie, M.D.	Contact	+8618611835860		nytnyt1231@163.com
Hua Meng, M.D.	Contact	+8618611457779		menghuade@hotmail.com

Overall Officials

Name	Affiliation	Role
Yuntao Nie, M.D.	China-Japan Friendship Hospital	Principal Investigator

Locations

Facility	Status	City	State	ZIP	Country	Contacts
Yuntao Nie	Recruiting	Beijing		100029	China

IPD Sharing Statement Module

Plan to Share IPD

Description

Data should be accessed with the permission of the principal investigator.

Types

Not provided

Time Frame

Not provided

Access Criteria

Not provided

URL

Not provided

Condition Browse Module

MeSH Terms

ID	Term
D000740	Anemia

Ancestor Terms

ID	Term
D006402	Hematologic Diseases
D006425	Hemic and Lymphatic Diseases

Browse Leaves

Not provided

Browse Branches

Not provided