Please select the eligibility criteria that correspond to the clinical trial below.
Title: Left Ventricular Assist Device (Impella LP 2.5) vs. Intraaortic Balloon Counterpulsation (IABP) in Patients With Cardiogenic Shock and Acute Coronary Syndromes
Brief Summary: The purpose of this study is to evaluate the efficacy and safety of a left ventricular assist device in comparison to a standard treatment with an intraaortic balloon pump (IABP) in patients with cardiogenic shock due to left ventricular failure following an acute coronary syndrome (myocardial infarction).


Options:
A: Inclusion Criteria:

1. ≥18 - ≤70 years
2. Witnessed OHCA (by bystanders)
3. Initial rhythm of VF/VT or AED administered
4. Bystander BLS

Exclusion Criteria:

1. ROSC within 15 minutes of conventional CPR with sustained hemodynamic recovery
2. Terminal heart failure (NYHA III or IV)
3. Severe pulmonary disease (COPD GIII of GIV)
4. Disseminated oncological disease
5. Obvious or suspected pregnancy
6. Bilateral femoral bypass surgery
7. Known contraindications for ECPR
8. Known pre-arrest CPC-score of 3 or 4
9. Known limitations in therapy or a Do Not Resuscitate-order
10. Multitrauma (Injury Severity Score \>15)
11. Expected time-to-start cannulation \> 60 minutes
B: Inclusion Criteria:

* Acute coronary syndrome (ACS/AMI) \< 48h and cardiogenic shock defined as:

  * Clinical criteria: Hypotension (syst.BP \< 90 mmHg and HR \> 90/min or an AV- Block II-III) or the need for positive inotropic drugs to maintain BB \> 90mm Hg)and end-organ hypoperfusion
  * Hemodynamic criteria: CI \< 2.2 L/min/qm and a PCWP \> 15 mmHg or an EF of LV \< 30% and LVEDP \> 20 mmHg.
* Written informed consent of the patient or his/hers relatives

Exclusion Criteria:

* Age \< 18 years
* Prolonged Resuscitation (\> 30min)
* Hypertrophic Obstructive Cardiomyopathy
* Thrombus in left ventricle
* Treatment with IABP
* Severe valvular disease or mechanical heart valve
* Cardiogenic Shock due to mechanical complications of myocardial infarction such as VSD, acute mitral regurgitation \>II°, rupture of the ventricle
* Failure of the right ventricle defined as the need for a RV Assist Device
* Septic condition
* Cerebral Disease
* Bleeding with a need for surgical intervention
* Pulmonary embolism
* Allergy to Heparin or any known coagulopathy
* Aortic regurgitation \>II°
* Pregnancy
* Inclusion in another study or trial
C: Inclusion Criteria:

* Able to understand and sign an ICF
* ≥ 18 and ≤ 90 years of age
* General good health, in the opinion of the investigator
* ST elevation of 2mm in 2 contiguous anterior leads or ≥ 4mm total in anterior leads
* Scheduled for PCI \< 6 hours from onset of symptoms of MI

Exclusion Criteria:

* Known contraindication to MRI
* Prior thrombolytic therapy during the index event
* Known history of MI
* Known severe aortic insufficiency
* Known aortic aneurysm
* Known severe calcific aorta-iliac disease or peripheral vascular disease
* Experiencing cardiac shock
* Known end-stage renal disease
* Weight \>400 lbs. or height \<4 ft.
D: Inclusion Criteria

* Age ≥ 18 and \< 75, men and women;
* 1) SBP \< 90mmHg or MAP \< 60 mmHg, after an appropriate fluid challenge if there is no sign of overt fluid overload; OR 2) need of vasoactive agents to maintain SBP \> 90 mmHg or MAP \> 60 mmHg.
* Pre-existing diagnosis of heart failure with reduced ejection fraction (left ventricle systolic function ≤35%).
* Moreover, eligible patients have to fit at least ONE of the following criteria/items of overt hypoperfusion: mixed venous oxygen saturation \< 60%; arterial lactates \> 2 mmol/L; oliguria \< 0.5 ml/Kg/h for at least 6 hours.
* Eligible patients shouldn't have contraindications to HRT.

Exclusion Criteria

* Cardiogenic shock symptoms beyond 6 hours.
* Septic shock with evident septic focus.
* Cardiogenic shock due to acute myocardial infarction.
* Cardiogenic shock due to acute myocarditis.
* Cardiogenic shock due to pulmonary thromboembolism.
* Reiterating major arrhythmias: VT or VF or AF, with ventricular rate \> 160 bpm.
* Severe aortic valve disease.
* Obstructive hypertrophic cardiomyopathy or constrictive pericarditis or severe heart failure due to congenital heart disease
* Severe peripheral vascular disease that contraindicates mechanical support insertion.
* Cardiogenic shock secondary to either cardiac or non-cardiac surgery.
* Post-cardiac arrest syndrome following out of hospital cardiac arrest
* Comorbidities with ominous prognosis (life expectancy \< 1 year).
* End-stage organ failure.
* Pregnant, lactating or subjects planning pregnancy during the course of the trial.
* Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the trial, or may influence the result of the trial, or the participant's ability to participate in the trial.

Answer: B