Please select the eligibility criteria that correspond to the clinical trial below.
Title: Red Cell Storage Duration Study
Brief Summary: The RECESS study will compare the effects of transfusing red blood cell units stored \<= 10 days vs. red blood cell units stored \>= 21 days, in patients who are undergoing complex cardiac surgery and are likely to need a red blood cell transfusion. The primary hypothesis is that there is a clinically important difference between the effects of shorter-storage red cell units and longer-storage red cell units on clinical outcomes and mortality risk.


Options:
A: Inclusion Criteria:

* \>= 12 years old
* \>= 40 kg body weight
* Scheduled complex cardiac surgery with planned use of median sternotomy.
* Patients ≥ 18 years must have a Transfusion Risk Understanding Scoring Tool (TRUST) probability score ≥ 3

Exclusion Criteria:

* Refusal of blood products
* Planned surgery is minimally invasive
* Known transfusion reaction history
* Requirement for washed products, volume reduced products, or products with additive solution removed
* Expected residual cyanosis with O2 saturation \< 90
* Left ventricular assist device (LVAD) or Extracorporeal membrane oxygenation (ECMO) support pre-operatively or planned need post-operatively
* Cardiogenic shock requiring pre-operative placement of an Intra-aortic balloon pump (IABP) (IABP done for unstable angina or prophylactically for low ejection fraction is not excluded)
* Planned Deep Hypothermic Circulatory Arrest (DHCA)
* Renal dysfunction requiring pre-operative renal replacement therapies such as hemodialysis (HD) or continuous venovenous hemofiltration (CVVH)
* Planned use of alternative to heparin, e.g. bivalirudin
* Planned use of autologous or directed donations
* Prior RBC transfusion during hospitalization for the study-qualifying surgery
* Prior randomization into the RECESS study
B: Inclusion Criteria:

* Women over 18
* Willing and stable to give consent
* \> 6 hours postpartum from any mode of delivery
* Determined by their physician to require blood transfusion either by:

  * Hb \<7g/dL OR
  * \>7g/dL with any sign or symptom of anemia such as fatigue, dizziness, tachycardia, or hypotension
* Agreed to accept blood transfusion
* No contraindications to blood transfusion

Exclusion Criteria:

* hemoglobinopathies
* patients with an ejection fraction \<35%
* Hb \<5 g/dL
* HR \> 130 bpm, BP \< 80/40
C: Inclusion Criteria:

* All elective primary and redo adult cardiac surgical patients for coronary artery bypass grafting, valve procedure or combined procedures
* Adults patients
* Written informed consent

Exclusion Criteria:

* Age less than 18 years
* Transplant procedures
* Emergency procedures
* Aortic repairs
* Congenital procedures
* Previous anemia (hemoglobin lower than 10 g/dL)
* Previous thrombocytopenia (platelet number lower than 100.000/mm3)
* Previous known coagulopathy
* Pregnancy
* Those unable to receive blood transfusion
* Patients who refused participation in the study
D: Inclusion Criteria:

* Patients for planned open repair of the abdominal aorta or infrainguinal arterial bypass
* Hemoglobin \< 6 mmol/L

Exclusion Criteria:

* Documented wish against transfusion
* Previous serious adverse reaction with blood products
* Unable to understand the benefits and risks of testing
* Previous participation in trial

Answer: A