Cardiac psychosis...

"There is an increase in the risk of heart attack if a first-degree relative (parent or sibling)..."
 
http://www.uihealthcare.org/2column.aspx?id=237281
 
"Eugenics has also been concerned with the elimination of hereditary diseases..."
 
http://en.wikipedia.org/wiki/Eugenics
 
"Damage to the autonomic nervous system is a key predictor of cardiovascular risk, researcher Rianne Ravensbergen told the Canadian Cardiovascular Congress 2011, co-hosted by the Heart and Stroke Foundation and the Canadian Cardiovascular Society. "

http://www.heartandstroke.com/site/apps/nlnet/content2.aspx?c=ikIQLcMWJtE&b=7799765&ct=11300873
"Injured heart tissue conducts electrical impulses more slowly than normal heart tissue...
The cardiac defibrillator is a device that was specifically designed to terminate these potentially fatal arrhythmias. The device works by delivering an electrical shock to the patient in order to depolarize a critical mass of the heart muscle, in effect "rebooting" the heart."
 
http://en.wikipedia.org/wiki/Myocardial_infarction
 

Research: 

 
"Sleep deprivation consistently preceded onset of these symptoms..." - Postoperative psychosis after heart surgery
 http://www.ncbi.nlm.nih.gov/pubmed/1177486   
  
Cerebral embolism and psychosis with special reference to cardiac surgery - http://www.ncbi.nlm.nih.gov/pubmed/61257
 
Psychotic reactions after cardiac surgery. A critical review - http://www.ncbi.nlm.nih.gov/pubmed/4950880
 
Mental and neurological disorders associated with heart operations. Pre- and postoperative studies - http://www.ncbi.nlm.nih.gov/pubmed/1261955
 
Postcardiotomy psychosis in non-English-speaking patients - http://www.ncbi.nlm.nih.gov/pubmed/5148647
 
Psychiatric effects of cardiac surgery - http://www.ncbi.nlm.nih.gov/pubmed/1020860
 
The hidden psychosis of open-heart surgery. With a note on the sense of awe - http://www.ncbi.nlm.nih.gov/pubmed/4678683
 
 
Postcardiotomy psychosis: indications and interventions - http://www.ncbi.nlm.nih.gov/pubmed/1041578