hierarchy - a series of ordered groupings of people or things within a system; put honesty first in her hierarchy of values. 1  celestial hierarchy - the collective body of angels. 2  data hierarchy - an arrangement of data consisting of sets and subsets such that every subset of a set is of lower rank than the set. taxonomy - a classification of organisms into groups based on similarities of structure or origin etc.
No, elevated blood pressure is not a known side effect of the flu vaccine. Other things, such as pain, can cause your blood pressure to rise.
The rise in blood pressure can make your heart beat more powerfully in order to pump the blood throughout your body. While this wouldn't be an issue if it happened only occasionally, my concern would be that it could be a sign that your blood pressure may be elevated on a regular basis.