Selectivity

Adrenoceptor agonists may be used in the pre-hospital setting for the treatment of a number of cardiovascular and respiratory conditions including cardiac arrest and acute asthma.

Question:
Concisely explain how the receptor selectivity of adrenoceptor agonists impacts on the therapeutic efficacy of these drugs and contributes to the potential for adverse effects caused by these drugs (maximum of 200 words).

SelectivityPaper details:
I need 3 pages of selectivity:
1. selective exposure
2. selective attention
3. selective retention

I need it to be written as simple as possible please because I’m going to represent it.
Comments from Support Team: Discipline: Communication Theory