Kidnapped by the SLA. On February 4, 1974, at the age of 19, Patty Hearst was taken hostage by members of the Symbionese Liberation Army, who aimed to garner a hefty ransom from her wealthy father.
There is also a blood test for B-type natriuretic peptide (BNP), which can indicate active heart failure. Electrocardiogram (ECG or EKG) to assess the heart rate and rhythm. This test can often detect heart disease, heart attack, an enlarged heart, or abnormal heart rhythms that may cause heart failure.
Blood tests play an important role in confirming â or ruling out â heart conditions such as coronary artery disease and heart failure. 1  Blood tests can measure these and other biomarkers: 2  B-type natriuretic peptides (BNP) produced by the heart to help the body eliminate fluids from the body. High levels of BNP can signal damage to the heart muscle and heart failure. Blood urea nitrogen (BUN) tests for elevated levels of urea nitrogen, a sign of kidney failure. BUN is often tested when heart failure is suspected. C-reactive protein produced by the liver in response to injury (inflammatory disease).