Short-term Intravenous Iron Dextran for IDA

Short-term Use of Intravenous Iron Dextran for Preoperative Anemic Patients Undergoing Orthopedic Surgery: a Prospective, Randomized, Controlled Study


Lead Sponsor: West China Hospital

Source West China Hospital
Brief Summary

This prospective, randomized, controlled study aims to evaluate the impact of short-term intravenous iron dextran on postoperative recovery and the requirement for allogeneic red blood cells (RBC) transfusion in preoperative Iron-deficiency anemia (IDA) patients receiving orthopedic surgery, thus facilitating developing a simple and effective iron supplement approach for patients' recovery.

Detailed Description

Anemia is a decrease in the concentration of hemoglobin (Hb) or RBC count in the blood ting, causing body not being able to adequately supply oxygen to tissues and cells. Preoperative anemia is common in patients receiving elective surgery, with a prevalence ranging from 5% to 75%. For instance, the prevalence of anemia before total hip or total knee arthroplasty is around 35%. Preoperative anemia is one of the main predictors of perioperative allogeneic RBC transfusion, and is closely associated with postoperative infection, increased morbidity and mortality, prolonged hospital stay, and decreased quality of life.

As the world enters an aging society, the proportion of elderly patients receiving surgery, especially orthopedic surgery, is increasing. There are 3 main causes of anemia in the elderly: nutritional anemia (~34%), which is caused by lack of hematopoietic materials. Iron-deficiency anemia (IDA) is the most common type of nutritional anemia, while megaloblastic anemia caused by lack of folic acid and vitamin B12 is relatively rare. Anemia of chronic disease (~32%), which is characterized by disorders of iron metabolism that occurs in certain chronic diseases, such as persistent infections, inflammation and tumors. Anemia of unknown cause (-34%), which may involve multifactorial pathogenic mechanisms and comorbidities. IDA, the most common cause of perioperative anemia in patients receiving orthopedic surgery, is a condition caused by hematopoietic materials deficiency and has a good clinical response to iron supplementation with a rapid rise of Hb level. Iron supplementation in patients with preoperative IDA, or insufficient iron intake and excessive loss is able to improve the patients' surgical tolerance and reduce the transfusion rate; For anemic patients with acute blood loss during surgery, iron supplementation is able to accelerate anemia correction, thus enhancing postoperative recovery and shortening length of hospital stay.

Iron therapy can be administrated by the oral or intravenous route. Absorption of oral iron therapy is relatively low, and it usually takes over 1 to 2 months to correct the iron deficiency status. Therefore, intravenous iron therapy is recommended for patients diagnosed with IDA after admission to hospital to receive surgery. Intravenous iron therapy was originally the standard iron supplementation in chronic renal failure patients with IDA. Subsequently, it was expanded to the anemia of patients with conventional inflammatory bowel disease for its desirable efficacy. Several studies of elderly IDA patients receiving orthopedic surgery and gynecologic surgery suggest that intravenous iron therapy can rapidly increase hemoglobin levels before surgery, leading to a decrease in blood transfusion rates. The calculation of the total dose of intravenous iron is as follows:

= Weight (kg) ×[Target Hb level(g/L)- actual Hb level(g/L)] ×0.24 + 500mg Treatment duration is over 2 weeks in most clinical studies of intravenous iron therapy. In China, few patients are treated with intravenous iron therapy in community hospitals for 2 to 4 weeks before surgery. Therefore, many IDA patients did not receive proper preoperative intravenous iron therapy. Iron dextran, an intravenous iron preparation that can be administered in a single treatment up to 1000 mg in a relatively short (15 minutes) time without need for test dose, is of low risk of adverse reactions. Therefore, sufficient amount of iron can be administrated during preoperative. Currently, there is no evidence to elucidate whether short-term sufficient intravenous iron supplementation can reduce perioperative blood transfusion requirements among IDA patients. Thus, we hypothesized that short-term intravenous administration of sufficient iron dextran can reduce the need for perioperative allogeneic RBC transfusion without increasing the incidence of adverse reactions.

This prospective, randomized, controlled study aims to evaluate the impact of short-term (1 week) intravenous iron dextran in preoperative IDA patients receiving orthopedic surgery on postoperative allogeneic RBC transfusion rate and amount, hemoglobin level and iron storage, postoperative complications, average length/expense of hospital stay, etc., to determine the safety and efficacy of short-term sufficient intravenous iron therapy, and to develop a simple and effective preoperative iron supplementation program.

Overall Status Not yet recruiting
Start Date June 1, 2019
Completion Date May 31, 2024
Primary Completion Date May 31, 2023
Phase N/A
Study Type Interventional
Primary Outcome
Measure Time Frame
Rate of allogeneic RBC transfusion 30 days after randomization
Secondary Outcome
Measure Time Frame
Average number of units of RBC transfused in patients who receive allogeneic RBC transfusion 30 days after randomization
Average number of units of RBC transfused in the entire study population 30 days after randomization
Incidence of postoperative adverse events (AEs) 30 days after randomization
Hemoglobin (Hb) levels 30 days after randomization
Length of stay (LOS) 30 days after randomization
Postoperative hospital stay 30 days after randomization
Re-admission 30 days after randomization
Cost of Hospitalization 30 days after randomization
Enrollment 1000

Intervention Type: Drug

Intervention Name: Intravenous iron dextran

Description: Enrolled subjects would receive intravenous iron dextran within 24 hours of the subject's inclusion.

Arm Group Label: Intravenous iron group



Inclusion Criteria:

- Age > 14 years;

- Sign and date the "informed consent form"

Exclusion Criteria:

- Pregnant or lactation;

- Drug abuse, including but not limited to opioids, amphetamines, ice, ketamine, etc.;

- History of anaphylaxis to oral or intravenous iron;

- Nervous system diseases such as peripheral neuropathy, mental illness;

- Other conditions that the investigator deems are not suitable for the study, such as deafness, Parkinson's disease, communication disorders, etc.;

- Participated in other clinical trials during the first three months of the study.

Gender: All

Minimum Age: 14 Years

Maximum Age: 99 Years

Healthy Volunteers: No

Overall Official
Last Name Role Affiliation
Ren Liao, M.D. Principal Investigator Department of Anesthesiology, West China Hospital, Sichuan University
Overall Contact

Last Name: Ren Liao, M.D.

Phone: +86-18980602177

Email: [email protected]

Verification Date

April 2019

Responsible Party

Type: Principal Investigator

Investigator Affiliation: West China Hospital

Investigator Full Name: Ren Liao

Investigator Title: Associate Professor

Has Expanded Access No
Condition Browse
Number Of Arms 2
Arm Group

Label: Intravenous iron group

Type: Experimental

Description: Enrolled subjects would receive intravenous iron dextran within 24 hours of the subject's inclusion.

Label: Control group

Type: No Intervention

Description: Clinical management, including surgical procedures, anesthesia, and perioperative management, are performed in accordance with standard clinical practice.

Patient Data Undecided
Study Design Info

Allocation: Randomized

Intervention Model: Parallel Assignment

Primary Purpose: Treatment

Masking: Single (Outcomes Assessor)