Please select the eligibility criteria that correspond to the clinical trial below.
Title: N-3 Polyunsaturated Fatty Acids (n-3 PUFAs) in the Prevention of Atrial Fibrillation Recurrences After Electrical Cardioversion. A Prospective Randomized Study.
Brief Summary: The purpose of this study is to determine the effect of n-3 PUFAs in addition to amiodarone and renin-angiotensin-aldosterone system (RAAS) inhibitors on the maintenance of sinus rhythm after electrical conversion in patients with persistent Atrial fibrillation (AF).


Options:
A: Inclusion Criteria:

1. NASH with NAS (NASH Activity Score) of \>4 evident on a biopsy performed within 6 months of enrollment.
2. Age 21 years or older.
3. BMI 25 or greater.
4. Ability to provide informed consent.

Exclusion Criteria:

1. Cirrhosis evident clinically or on biopsy.
2. Secondary forms of NASH such as that seen with bariatric surgery or medication induced from such medications as methotrexate, amiodarone, tamoxifen, corticosteroids.
3. Current or past history of diabetes or hyperlipidemia requiring specific drug therapy (see below).
4. Current use of a weight loss medicine, such as a 'fat-burner' or similar agent
5. Alcohol consumption \> 30 g/day, currently or for more than 3 consecutive months within 5 years.
6. Other liver disease (hepatitis C,B, Wilson's, autoimmune, ct-1-antitrypsin and hemochromatosis or HIV
7. Pregnancy or unwillingness to use an effective form of birth control for women of child bearing years.
8. Renal insufficiency (creatinine \> 2), symptomatic coronary, peripheral or neurovascular disease, symptomatic heart failure or advanced respiratory disease requiring oxygen therapy.
9. Inability to provide informed consent.
10. Any condition in the opinion of the primary investigator that would contraindicate the patient's participation.
B: Inclusion Criteria:

* persistent Atrial Fibrillation (AF) lasting \> one month
* history of at least one AF relapse after previous electrical or Pharmacological cardioversion

Exclusion Criteria:

* left atrium size \> 6 cm
* severe valvulopathy
* myocardial infarction during the previous 6 months
* unstable angina
* NYHA heart failure class IV or hemodynamic instability
* cardiac surgery during the previous 3 months
* significant pulmonary thyroid and hepatic disease
* contraindications to treatment with amiodarone or RASS inhibitors
* chronic renal dysfunction
* QT \> 480 msec in the absence of bundle-branch block
* bradycardia \< 50 b/min
* diagnosis of paroxysmal AF
* hyperkalemia
* pregnancy
* any disease or other medical treatment that, in the opinion of the investigators, could interfere with the study.
C: Inclusion Criteria:

* Clinical diagnosis of myocardial infarction, angina, or coronary insufficiency
* Willingness to attend Coronary Clinic in Sydney Australia on a regular basis
D: Inclusion Criteria:

* 63 to 79 years old
* healthy men and women
* able to attend clinic at a study sites

Exclusion Criteria:

* illiteracy or inability to understand the protocol
* unable to undergo neurophysiological tests
* morbid obesity (BMI greater than or equal to ≥ 40 kg/m2)
* uncontrolled diabetes (HbA1c\>85)
* uncontrolled hypertension
* prior cerebrovascular accident
* any relevant psychiatric illness, including major depression
* advanced cognitive deterioration, dementia
* other neurodegenerative diseases (i.e. Parkinson's disease)
* any chronic illness expected to shorten survival (heart, liver, cancer, etc)
* bereavement in the first year of loss
* bad dentures unless fixable dental prostheses are used
* allergy to walnuts
* customary us of fish oil or flaxseed oil supplements
* eye related exclusion criteria

Answer: B