A diastolic blood pressure of 78 mmHg is within the normal diastolic range.

• A. Yes
• B. No
• C. Only if systolic is 120
• D. Not enough information

Answer: (A)

Normal diastolic blood pressure is typically about 60–80 mmHg. A diastolic value of 78 mmHg falls within that range, so it indicates a normal diastolic pressure. The diastolic number reflects arterial pressure when the heart is at rest between beats, and this value is already sufficient to judge its own normalcy without needing the systolic number. So this statement is true regardless of the systolic value (for example, even with a systolic around 120, the diastolic can still be normal).