Please select the eligibility criteria that correspond to the clinical trial below.
Title: Cost-effectiveness and Cost-utility of Liberal vs Restrictive Red Blood Cell Transfusion Strategies in Patients With Acute Myocardial Infarction and Anaemia. The REALITY (REstrictive And LIberal Transfusion Strategies in Patients With Acute mYocardial Infarction) Randomized Trial.
Brief Summary: Anemia in patients with myocardial infarction (MI) is a relatively frequent issue, resulting in poorer outcome. There is equipoise regarding which transfusion strategy is best, and there is an international consensus on the urgent need for a randomized trial.

The investigators hypothesize that a "restrictive" transfusion strategy is at least non-inferior to a "liberal" transfusion strategy on 30-day outcomes of MI patients with anemia. Given the costs and risks of transfusion, a cost-effectiveness and cost-utility analysis becomes key to determining the role of each strategy.


Options:
A: Inclusion Criteria:

1. Age ≥18 years old at time of SAH
2. First ever episode of aneurysmal SAH
3. Diagnosis of aSAH as confirmed by treating physician (eg: neurosurgeon or neuro- interventionalist) and supported by blood in subarachnoid space (e.g. cranial imaging or cerebrospinal fluid positive for xanthochromia, surgical visualization) that is the result of a ruptured aneurysm (e.g. direct visualization, cranial imaging or catheter angiogram)
4. Hb ≤100g/L within 10 days following aSAH (defined by first day of hospital presentation)

Exclusion Criteria:

1. Physician and or family decision to withdraw/withhold active medical care at time of enrolment
2. Active bleeding with hemodynamic instability at time of enrolment
3. Patients with contraindication or known objection to blood transfusions
4. SAH due to mycotic aneurysm, infundibulum and vascular malformations.
B: Inclusion Criteria:Adults aged over 50 years Within 48 hours of admission to hospital with fractured Neck of Femur. Exclusion Criteria: Age \<50

* Refusal of consent of patient (or consultee) Patient for palliative care.
C: Inclusion Criteria:

* Aged ≥ 18 years
* Recent acute myocardial infarction, with or without ST- segment elevation, with a combination of ischemic symptoms occurring in the past 48 hours,before the MI related admission, and elevation of biomarkers of myocardial injury (troponin)
* Anemia Hb ≤ 10g / dL but \> 7 g/dL on Hb, measured at any time during the index hospital admission for MI.
* Written informed consent
* Coverage for medical insurance.

Exclusion Criteria:

* Shock (SBP \< 90 mmHg with clinical signs of low output or patients requiring inotropic agents)
* MI occurring post-percutaneous coronary intervention (PCI) or post-coronary artery bypass graft (CABG) (i.e. type IV or V Acute MI according to the 2012 Universal Definition of MI
* Life-threatening or massive ongoing bleeding (as judged by the investigator)
* Any blood transfusion in the previous 30-days
* any known malignant hematologic disease Note: Sickle cell disease, thalassemia and anemia due to chronic renal failure (even under EPO) are not an exclusion criteria
D: Inclusion Criteria:

* \>20% TBSA burn with anticipated operation need on admission as determined by attending physician
* age \>18 years
* Admission within 96 hours of injury

Exclusion Criteria:

* \<18 years of age
* pregnancy
* inability or unwillingness to receive blood products
* history of chronic anemia (hemoglobin \<9.0 g/dL one month prior to enrollment)
* preexisting need for hemodialysis
* brain death or imminent brain death
* non-survivable burn as determined by the attending burn surgeon
* angina or acute myocardial infarction
* preexisting hematologic disease
* Length of hospital stay anticipated to be \< 2 weeks
* Transfusion administered at outside hospital before admit

Answer: C