Post-transfusion Platelet Count

Region Skane

Status: Completed

Conditions: Multiple Sclerosis; Leukemia

Treatments: Biological: Platelet transfusion

Study type: Observational

Funder types: Other

Identifiers

NCT02601131

Post-transf-PLC

Details and patient eligibility

About

The purpose of this study is to identify how the platelet count, complement system and endothelial markers are affected over time, after platelet transfusion in 4 different hematological patient groups.

Full description

Patients who are hospitalized at the Clinic for Hematology Diseases at the Skåne University Hospital (SUS) in Lund, Sweden with a central venous catheter or port-a-cath and should receive platelet transfusion due to thrombocytopenia are asked to participate in the study. Some patients who are being considered for platelet transfusions on several occasions will be able to attend more than one time in this study. After signed informed consent blood samples are drawn from the central line before, immediately after and then approximately. 1, 4, 8, 16 and 24 hours following the platelet transfusion. The platelet count (PLC) will then be taken daily following 4 days.

Sample size. Data from previous studies (Norol-98) shows that the PLC after platelet transfusion rises by 33 ± 25 x109/L (mean ± SD) 12 hours post-transfusion in patients with acute myeloid leukemia or pre-conditioning prior to bone marrow transplantation. The investigators want to show the same rise in the PLC after 12 hours with 80% power and 5% alpha risk of error for each group resulting in the sample size 13 per group and a total of 65 patients.

Enrollment: 80 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients admitted to the Clinic of Hematology Diseases, Skåne University Hospital, Lund, Sweden belonging to either of the groups described in paragraph 8 above and are prescribed platelet transfusion.

Exclusion criteria

• Patients with aplastic anemia or treatment with antithymocyte globulin (ATG)

Trial design

80 participants in 5 patient groups

AML, ALL and MDS

Description:

Patients receiving intensive chemotherapy with diagnoses of acute myeloid leukemia (AML), acute lymphocytic leukemia (ALL) or myelodysplastic syndromes (MDS).

Treatment:

Biological: Platelet transfusion

Autologous stem cell transplantation

Description:

Patients undergoing autologous stem cell transplantation

Treatment:

Biological: Platelet transfusion

Allogeneic stem cell transplantation

Description:

Patients undergoing allogeneic stem cell transplantation including both myeloablative conditioning (MAC) and the reduced-intensity conditioning (RIC)

Treatment:

Biological: Platelet transfusion

Platelet transfusion prophylaxis

Description:

Patients receiving platelet transfusion prophylaxis before the intervention, such as insertion of a central venous catheter or lumbar puncture

Treatment:

Biological: Platelet transfusion

Control

Description:

Patients with AML, ALL or MDS that have low PLC (10-20 billion/L) and is not relevant for platelet transfusion. Samples taken in the same manner as in the other groups. Control is needed to rule out other causes of variation of the PLC than the platelet transfusion and thereby strengthen the causality between a given transfusion and increased PLC.