Please select the eligibility criteria that correspond to the clinical trial below.
Title: The Safety and Feasibility of Delivering Xenon to Patients Before and After Coronary Artery Bypass Graft Implantation: a Pilot Study
Brief Summary: The aim of this study is to determine whether xenon - as compared to sevoflurane - can be applied safely in patients for general anesthesia before and after CABG implantation.


Options:
A: Inclusion Criteria:

* Male or female subject aged over 75 years
* Admission for a scheduled surgery (i.e. all oncologic digestive surgery , ureterostomy, nephrectomy or cystectomy, total hip or knee replacement)
* Participation agreement

Exclusion Criteria:

* Patients with a progressive and/or poorly managed psychiatric pathology (patients with stabilized depression could be included in the study)
B: Inclusion Criteria:

* Patients with coronary artery disease scheduled for elective CABG
* Patients willing and able to complete the requirements of this study
* Ejection Fraction \> 50%
* EuroSCORE ≤ 8
* men and women \>= 50 yrs
* women without childbearing potential
* ASA Score II-IV

Exclusion Criteria:

* Lack of informed consent
* EuroSCORE \< 8
* MMSE \< 24
* Age \< 50 years
* COPD GOLD \> II, increased need of oxygen
* Renal dysfunction
* Liver function disorders
* Acute coronary syndrome during the last 24 hours; hemodynamic instability
* Requirement of inotropic support
* Off-pump-surgery
* Disabling neuropsychiatric disorders
* History of stroke with residuals
* Hypersensitivity to the study anaesthetics
* Increased intracranial pressure
* Pregnancy and lactation period
* Women of childbearing potential
* Presumed uncooperativeness or legal incapacity
* Participation in a concomitant trial
C: Inclusion Criteria:

MUST HAVE:

General Anesthesia with volatile anesthetic

PATIENT CHARACTERISTICS

Major Criteria (Must have any 1 of the following:)

1. Planned open heart surgery
2. Medications - anticonvulsants, abuse of opiates, benzodiazepines, cocaine
3. EF\<40%
4. Prior history of awareness (recall)
5. History of difficult intubation or anticipated difficult intubation
6. ASA IV or V status
7. Aortic stenosis
8. End stage lung disease
9. Marginal exercise tolerance not secondary to musculoskeletal dysfunction
10. Pulmonary hypertension
11. Daily alcohol consumption

Exclusion Criteria:

1. Surgical procedure that prevents the use of the BIS (e.g. surgery of forehead)
2. Patient positioning prevents use of the BIS
3. Surgery with wake-up test.
4. Less than 18 years of age
5. Vulnerable populations, such as those with dementia and those unable to provide informed consent.
6. Stroke with residual neurological deficits

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D: Inclusion Criteria:

MUST HAVE:

General Anesthesia with volatile anesthetic

PATIENT CHARACTERISTICS

Major Criteria (any 1 of the following:)

1. Medications - anticonvulsants, abuse of opiates, benzodiazepines, cocaine
2. EF\<40%
3. Prior history of awareness (recall)
4. History of difficult intubation or anticipated difficult intubation
5. ASA IV or V status
6. Aortic stenosis
7. End stage lung disease
8. Marginal exercise tolerance not secondary to musculoskeletal dysfunction
9. Pulmonary hypertension
10. Daily alcohol consumption

Minor Criteria (any 2 of the following)

1. Beta blockers
2. COPD
3. Moderate exercise tolerance not secondary to musculoskeletal dysfunction
4. Smokes ≥2 packs per day
5. Morbid obesity BMI\>30 -

Exclusion Criteria:

1. Surgical procedure that prevents the use of the BIS (e.g surgery of forehead)
2. Patient positioning prevents use of the BIS
3. Surgery with wake-up test.
4. Less than 18 years of age
5. Vulnerable populations, such as those with dementia and those unable to provide informed consent.
6. Stroke with residual neurological deficits

Answer: B