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Irrespective of valve replacement
, blood pressure need treatment.
High pressure after valve replacement excludes significant obstruction of the valve!
Your pressure was not that high to cause immediate concern!
Drinking water will not help
is good - the dose needs adjustment - with time.
Keep following up with your doctor
If there is arrhythmia
(flutter), you may need further investigations - your cardiologist can decide when and what to do.
Wishing speedy recovery