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Is not a typographical error? You have exchanged systolic and diastolic values!
No biological value is constant – rather should not be constant!
Alcohol could have caused dilatation of blood vessels – lower pressure and higher rarte.
The best option is too see a cardiologist / get examined and investigated. There are ways to monitor pressure and rate for 24 or 48 hours. Echocardiogram
and Exercise EKG may be in need.
Wishing speedy recovery