What defines adult hypotension in terms of blood pressure?

Adult hypotension is typically defined as a systolic blood pressure that falls below 90 mmHg. This threshold is critical because a systolic pressure under this level indicates inadequate blood flow to vital organs, which can lead to significant health complications and may require immediate medical intervention. In clinical practice, recognizing hypotension is crucial as it can be a sign of various underlying conditions, including shock, dehydration, or cardiogenic issues.

The choice indicating that systolic blood pressure less than 100 mmHg reflects a common misconception, as while it might indicate a degree of concern in certain contexts, it does not meet the specific clinical definition of hypotension.

Understanding the established thresholds for blood pressure helps in making informed decisions during assessments and interventions, ensuring proper care for patients experiencing low blood pressure crises.