1. In old age there is already Isolated systolic hypertension
in elderly or Pseudo hypertension due to stiff and non-compliant vessels (Osler's sign), thus make sure dose of the drug is neither too high nor too low.
2. sudden stoppage of BP pill result in rebound/accelerated hypertension
which sometimes change into Malignant hypertension
characterized by target organ damage (blurred vision
, hematuria, hemorrhage in brain)
3. hypertension is also a Psycho somatic disorder so apart from body you have to take into consideration the mind part also. make sure low dose tranquilizer is also given.
4. In old age due to arteries been hard will result in less delivery of oxygen and nutrients to body parts, and as arteries become narrow,blood clots
can form which can lead to fatal outcome.