
erhöht
increased
Being above the normal or average level in amount, level, or degree.
Patienten mit erhöhtem Blutdruck müssen vorsichtig sein.
Patients with increased blood pressure must be careful.
increased / elevated
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increased
Being above the normal or average level in amount, level, or degree.
Patienten mit erhöhtem Blutdruck müssen vorsichtig sein.
Patients with increased blood pressure must be careful.

elevated
Located in a higher position than the surroundings; situated on a rise.
Von dem erhöhten Standpunkt aus hatten wir eine tolle Aussicht.
From the elevated viewpoint, we had a great view.

heightened
Increased in significance or importance; elevated.
In seiner neuen Position genießt er ein erhöhtes Ansehen.
In his new position, he enjoys heightened prestige.
'Erhöht' (increased/elevated) is the past participle of the verb 'erhöhen' (to increase / to raise). It describes a state that is the result of 'making higher.' The prefix 'er-' often signals the bringing about of a new state.
Die Regierung hat die Steuern erhöht.
The government increased the taxes.
The word belongs to the family of 'hoch' (high) and 'die Höhe' (height). If you know these words, you can more easily infer the meaning of 'erhöht' (increased/elevated).
Der Berg hat eine Höhe von 3000 Metern.
The mountain has a height of 3,000 meters.
You can distinguish the meanings well from context. If 'erhöht' refers to measurable, abstract things such as values or risks, the first meaning is intended. If it refers to a physical position, the second meaning is intended.
Er hat erhöhte Leberwerte.
He has elevated liver values.
In connection with measured values, 'erhöht' is used very frequently. Typical combinations are 'erhöhter Blutdruck' (increased blood pressure), 'erhöhte Temperatur' (elevated temperature), 'erhöhtes Risiko' (increased risk), and 'erhöhte Cholesterinwerte' (elevated cholesterol levels).
Bei Fieber hat man eine erhöhte Körpertemperatur.
When you have a fever, you have an elevated body temperature.
In the meaning of 'heightened prestige' or 'more important,' 'erhöht' belongs to an elevated, formal style. You are more likely to find it in written language.
Der Direktor genießt in der Firma eine erhöhte Stellung.
The director enjoys an elevated position in the company.
high
Hoch and erhöht can both describe a large value. Hoch focuses primarily on the level reached. Erhöht emphasizes more strongly that the value is above a normal or average reference value.

Der Blutdruck des Patienten ist heute gegenüber seinem Normalwert erhöht.
The patient’s blood pressure is elevated today compared with its normal level.
Der Blutdruck des Patienten ist heute sehr hoch.
The patient’s blood pressure is very high today.