Which characteristic suggests stage II hypertension in an adult patient?

Stage II hypertension is classified based on specific blood pressure readings established by guidelines set by organizations such as the American College of Cardiology and the American Heart Association. To determine the stage, health professionals look at both the systolic and diastolic pressure measurements.

A systolic reading of 140 mm Hg or higher indicates at least stage I hypertension, while a reading of 180 mm Hg or higher, especially when coupled with a diastolic reading of 120 mm Hg or higher, clearly falls into stage II hypertension. This classification is significant because stage II hypertension typically requires more intensive management and intervention compared to earlier stages.

In this case, a systolic pressure of 140 or higher, combined with a diastolic measurement of less than 90, confirms the diagnosis of stage II hypertension. This categorization helps healthcare professionals identify patients who may be at increased risk for cardiovascular events and required to implement appropriate treatment plans.

The other readings presented represent either normal blood pressure levels or lower stages of hypertension, which do not meet the criteria for stage II hypertension. Therefore, the correct option identifies a significant threshold in blood pressure management that is vital in clinical practice.