How is hypotension defined in adults?

Hypotension in adults is generally defined as a condition in which blood pressure is significantly lower than the normal range, typically characterized by a systolic blood pressure reading consistently below 90 mmHg. However, considering the choices provided, the most commonly accepted point for identifying hypotension would actually still align more closely with the threshold of systolic pressure below 90 mmHg.

In your selected choice of systolic pressure consistently between 85-110 mmHg, while that range may include some hypotensive states, it also spans over normotensive values. Therefore, this choice doesn't accurately represent a strict definition of hypotension, which requires a lower threshold for diagnosing low blood pressure conditions.

In clinical practice, a systolic pressure below 60 mmHg is often noted as severe hypotension, while a diastolic pressure below 70 mmHg could be indicative of insufficient blood circulation. However, since the choices may not adhere strictly to medical definitions, the best approach to identifying hypotension in adults generally focuses on a systolic pressure reading consistently under 90 mmHg rather than the ranges provided.