What is a cardiac stress test using medicine? Medicine will be used to stress your heart instead of exercise. This medicine will increase your heart rate and/or open up (dilate) the heart arteries. This test may show evidence of blockages in the heart arteries when the heart is stressed. You can be scheduled for one of the following:
The Black Death or Black Plague was one of the most devastating pandemics in human history, resulting in the deaths of an estimated 75 to 200 million people and peaking in Europe in the years 1346â53.
Answers. The Black Death of 14th century Europe was caused by the spreading of the bacteria Yersinia Pestis on fleas carried by rats on trading ships from Asia. In Asia (where the plague had an even larger effect than it did in Europe), infected fleas would stay on rats, and the rats would board trading ships. These ships would land in European harbors, letting off the goods and the rats.