Efficacy of Prothrombin Complex Concentrate Reducing Perioperative Blood Loss in Cardiac Surgery

Cardiac Surgical Procedures Clinical Trial

Official title:

Efficacy of Prothrombin Complex Concentrate Reducing Perioperative Blood Loss in Cardiac Surgery, Compared With Fresh Frozen Plasma: Study Protocol for a Non-inferiority, Randomized Controlled Trial

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT04244981
• Other study ID #: PCC vs FFP Study
• Status: Not yet recruiting
• Phase: Phase 4
• Start date: December 1, 2023
• Est. completion date: December 31, 2025

Study information

• Verified date: November 2023
• Source: Chinese Academy of Medical Sciences, Fuwai Hospital
• Contact: Shi Jia, M.D.
• Phone: 86 10 88322467
• Email: shijia[@]fuwai.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study is a non-inferiority, randomized controlled trial, based on the hypothesis that 4-factor PCC is not inferior to FFP in reducing perioperative blood loss in patients undergoing cardiac surgery under cardiopulmonary bypass. 796 subjects will be randomly divided into 2 groups (group PCC and group FFP), with 398 cases in each group. Patients will be given 8~15 IU/kg 4-factor PCC in group PCC and 6~10 ml/kg FFP in group FFP. All the patients will be followed up respectively at 24 hours, 48 hours, 72 hours and 7 days after the surgery. The primary outcome is the volume of blood loss within 24 hours after surgery. The secondary outcomes include (1) the total units of allogeneic red blood cells (RBCs) transfused within 7 days after surgery and (2) length of intensive care unit (ICU) stay. Adverse events and serious adverse events will be monitored as safety outcomes. Exploratory outcomes include re-exploration due to postoperative bleeding within 7 days after surgery and length of hospital stay.

Description:

Perioperative blood loss and allogeneic blood transfusion are major complications of cardiac surgery, which increase perioperative complications, perioperative mortality and medical costs.This study is a non-inferiority, randomized controlled trial, in order to determine whether PCC is no worse than FFP in reducing perioperative blood loss and allogeneic blood transfusion in patients undergoing cardiac surgery under CPB. Patients signed the informed consent, aged 18 to 80 years, receiving elective CABG or valve replacement or valvuloplasty under CPB will be included. 796 subjects will be randomly divided into 2 groups (group PCC and group FFP), with 398 cases in each group. Preoperative management, anesthetic and surgical techniques will be standardized for both groups. When APTT is prolonged (> 45 s), patients will be given 8~15 IU/kg PCC in group PCC and 6~10 ml/kg FFP in group FFP. All the patients will be followed up respectively at 24 hours, 48 hours, 72 hours and 7 days after the surgery to record observations relevant to the study and the results of laboratory testing. The laboratory tests include hemoglobin concentration, hematocrit, platelet count, INR, PT, APTT, fibrinogen levels and blood biochemistry parameters. The primary outcome is the volume of blood loss within 24 hours after surgery. The secondary outcomes include (1) the total units of allogeneic red blood cells (RBCs) transfused within 7 days after surgery and (2) length of intensive care unit (ICU) stay. Adverse events and serious adverse events will be monitored as safety outcomes. Exploratory outcomes include re-exploration due to postoperative bleeding within 7 days after surgery and length of hospital stay. Modified intent-to-treat analysis will be used for all valid variables. All randomised subjects in the study, regardless of adherence to the study process or whether an adverse event occurs before or after the intervention, should be included in the analysis. Sensitivity analysis will be performed to assess the bias that may be introduced due to nonadherence to the protocol or missing data. Baseline characteristics will be tabulated and compared between the PCC and FFP groups using absolute standardised differences, and a value larger than 0.1 will be regarded as a clinically relevant difference between groups. Unbalanced baseline factors will be further adjusted by multivariable regression models. The primary outcome, the volume of blood loss within 24 hours after surgery, will be compared using the t-test with log transformation of the variable. Continuous secondary outcomes and the total units of allogeneic RBCs transfused during and within 7 days after surgery will be compared using a t-test with log transformation of the variable. The rate of re-exploration due to bleeding within 7 days after surgery will be compared using the chi-square test. Treatment effect will be measured by risk ratio and mean difference for binary and continuous outcomes with corresponding 95% confidence intervals. Bonferroni's correction for multiple comparisons will be conducted in the analysis of the secondary outcomes. If there exists unbalanced baseline characteristics, the primary outcome and secondary outcomes will be regressed against the group allocation and the unbalanced factors using liner regression and Cox regression models. Proportional hazard assumption will be checked by the Schoenfeld's residual plot. For safety outcomes, we will only describe the incidence of overall adverse events, SAEs, and component adverse events without statistical tests between two groups. A two-sided P-value < 0.05 was considered indicative of statistical significance.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 796
• Est. completion date: December 31, 2025
• Est. primary completion date: August 31, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria:

1. Age between 18 and 80 years.

2. Undergoing elective coronary artery bypass grafting (CABG) or valve replacement or valvuloplasty through CPB.

3. Signing of the informed consent form.

4. Developing coagulation factor deficiency or coagulopathic bleeding during the surgery, meeting the indications of PCC or FFP treatment: a) prolonged APTT (> 45 s) measured 20 minutes after CPB, and b) excessive bleeding observed.

Exclusion Criteria:

1. History of cardiac surgery.

2. Severe hepatic dysfunction before surgery.

3. Coagulopathy before surgery, including inherited or acquired coagulation factor deficiencies, thrombocytopenia, platelet dysfunction and other bleeding disorders.

4. Use of warfarin and INR > 1.2 before surgery.

5. Withdrawal of clopidogrel less than 5 days and low molecular weight heparin less than 12 hours before surgery.

6. Allergy to allogeneic blood products.

7. Pregnancy.

8. Other serious diseases that may affect patient survival time, such as cancers.

Related Conditions & MeSH terms

• Cardiac Surgical Procedures
• Hemorrhage

Intervention

Drug:
• Prothrombin Complex Concentrate, Human
A 4-factor prothrombin complex concentrate (Confidex®, CSL Behring, Marburg, Germany), containing a defined concentration of the four vitamin K-dependent clotting factors (II, VII, IX and X) and the thrombo-inhibitor proteins C and S. Each vial of Confidex® contains a relatively high concentration of coagulation factor II (20-48 IU/mL), factor VII (10-25 IU/mL), factor IX (20-31 IU/mL), factor X (22-60 IU/mL), proteins C (15-45 IU/mL), proteins S (13-38 IU/mL), Heparin (0.5 IU/mL), and antithrombin (0.6 IU/mL). When APTT is prolonged (> 45 s) measured 20 minutes after CPB or excessive bleeding observed, patients will be given 8~15 IU/kg PCC.
• Fresh Frozen Plasma
When APTT is prolonged (> 45 s) measured 20 minutes after CPB or excessive bleeding observed, patients will be given 6~10 mL/kg FFP.

Locations

Country	Name	City	State
n/a

Sponsors (5)

Lead Sponsor	Collaborator
Chinese Academy of Medical Sciences, Fuwai Hospital	Beijing Anzhen Hospital, Guizhou Provincial People's Hospital, Peking Union Medical College Hospital, Zunyi Medical College

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* Note: There are 42 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	re-exploration within 7 days after surgery	re-exploration due to postoperative bleeding within 7 days after surgery	within 7 days after surgery
Other	length of hospital stay	the length of hospital stay	postoperative period
Primary	volume of blood loss within 24 hours after surgery	the volume of drainage within 24 hours after surgery	postoperative period up to 24 hours after surgery
Secondary	total units of allogeneic RBCs transfused within 7 days after surgery	the total units of allogeneic RBC transfused during the intraoperative and postoperative the total units of allogeneic RBCs transfused during and within 7 days after surgery	during the intraoperative and postoperative period up to 7 days after surgery
Secondary	length of intensive care unit (ICU) stay	the length of intensive care unit (ICU) stay	postoperative period