Following up on an earlier post, there is a new analysis of the evidence so far.  Here is how Dr. David Ozonoff (Boston University), who kindly sent me the paper, usefully summarized it:  

[T]here is evidence in animals that would allow one to infer that: (a) ARBs [one kind of blood pressure medication] via ACE2 could improve lung function; (2) ARBs via ACE2 increase the chances of lung injury. So we have contradictory inferences and which require further work to sort them out. In the meantime, hypertension experts (through their societies, which don’t represent every possible judgment about the persuasiveness of one or another inference) are continuing to say we should default to current recommendations on managing hypertension. It is the conservative (not in the political sense) position, which is not surprising.