The reduced pulse rate can be attributed to the use of beta blocker nebivolol
. It is good to know finally the BP is controlled. It would be important to know if she suffocates, breathless while she performs daily activities.
A cough persisting more than 6 months is called chronic cough
. The first reasons to be ruled out are:
1) Post nasal drip
4) Medicine side effects
Hope this helps you a direction how to proceed further.