Hi,
'Lapsed' describes a person who used to have a belief, usually religious or philosophical, but has now given it up.
A good example is a lapsed Catholic. This means someone who was a Catholic but no longer believes in or follows his religion.
It sounds a little odd to say a lapsed smoker because smoking is not really a matter of belief.
hypertensive is an adjective describing a person with high blood pressure or emotional tension, so again, lapsed does not sound right with this.
Best wishes, Clive