Please select the eligibility criteria that correspond to the clinical trial below.
Title: Transfusion Requirements After Cardiac Surgery: a Randomized Controlled Clinical Trial (TRACS STUDY)
Brief Summary: Blood transfusion is related to worse outcomes and the triggers for red blood cells transfusion are not well defined in cardiac surgery. Retrospective studies in cardiac surgery do not show benefits of red blood cell transfusion in reduction of morbidity and mortality in cardiac surgery. There are no prospective studies comparing outcomes between restrictive or liberal strategy in cardiac surgery.This study is a double-blind randomized study comparing clinical outcomes between two strategies of transfusion in cardiac surgery - liberal or restrictive.


Options:
A: Inclusion Criteria:

* Adults aged 18 or over years presenting with AUGIB, defined by haematemesis or melaena.

Exclusion Criteria:

* Patients with whom the responsible clinician considers there is a need for immediate RBC transfusion prior to obtaining or regardless of the initial Hb result due to severity of bleeding.
* Existing hospital in-patients who develop AUGIB.
B: Inclusion Criteria:

* Blunt trauma mechanism of brain injury
* Glasgow Coma Score - motor component ≤ 5 (not following commands) on the post-resuscitation neurologic exam
* Available for enrollment and administration of study drug within 6 hours of injury

Exclusion Criteria:

* Penetrating trauma (i.e. gun shot wounds)
* Glasgow Coma Score = 3 and bilateral fixed and dilated pupils
* Abbreviated Injury Scale score \> 5 for any body part except brain
* Severe pre-existing chronic disease
* Uncontrolled hypertension, defined as mean arterial pressure \> 130mmHg despite antihypertensive treatment
* Known hypersensitivity to mammalian cell-derived products or human albumin
* Currently taking anticoagulants
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:

* age 18 or older;
* STEMI (ST segment elevated myocardial infarction)
* NSTEMI (Non ST segment elevation myocardial infarction)
* unstable angina
* stable coronary artery disease (undergoing cardiac catheterization during the index hospitalization);
* written informed consent has been obtained
* hemoglobin concentration less than 10 g/dL at the time of random allocation.

Exclusion Criteria:

* bleeding cannot be controlled at the cardiac catheterization puncture site and/or require surgery to repair vessel
* retroperitoneal bleeding requiring surgery
* clinically important hemodynamic instability based on the judgment of the treating physician
* terminal malignancy or life expectancy less than 6 months
* scheduled for cardiac surgery within the next 30 days
* symptomatic at the time of randomization
* declines blood transfusion
* history of a clinically significant transfusion reaction
* inability to provide informed consent;
* enrolled in a competing study
* previous participation in the MINT trial
* any patient who in the judgment of the research team should not be enrolled in the trial. This would include, but not be limited to, factors such alcohol or drug dependence, or psychiatric illness.

Answer: C