"It's less common that young people have underlying heart problems.
"Lone" means the irregular heartbeat is not caused by an underlying heart condition.
Most of the autopsied patients were obese and had underlying heart or lung disease.
In some cases, ventricular fibrillation is brought on by underlying heart disease, and in some cases the cause in unknown.
The witness insisted that it was impossible to tell whether patients had died of overdoses or of underlying heart diseases, a line of argument that Schneider found strained.
High blood pressure, also known as hypertension, is the main factor underlying heart failure and stroke, and can lead to heart attacks.
Mathematics – The New York Times article states that "75 to 95percentt of cardiac arrests are the result of underlying heart disease".
The researchers found that the style of argument detected in the video sessions was a powerful predictor for a man or woman's risk for underlying heart disease.
The selection depends on the root cause of a stroke, which can vary from trauma to underlying heart and blood-system ailments.
Those most likely to get into trouble, he said, are "toxic jocks" who overindulge and those with an underlying heart condition.
Health department officials said the figure also did not reflect the much larger number of people whose underlying heart and lung problems had worsened in cold environments.
