Primary cardiac tumors can mimic many other cardiac conditions and may cause obstruction to blood flow, heart failure, chest pain, syncope, pulmonary hypertension, and arrhythmias.

Results Hypertonic saline can significantly reduce cerebral edema, improved cerebral blood flow and improving cardiac output, effective recovery of shock.

The tunnel phenomenon "is caused by the eye's susceptibility to the low blood flow that occurs with fainting or cardiac arrest," he said.