Shock is indicated when the diastolic blood pressure is:

Shock is indicated when the diastolic blood pressure is:

• A. Greater than 100 mm Hg
• B. Less than 60 mm Hg
• C. Greater than 90 mm Hg
• D. Less than 50 mm Hg

Answer: (D)

When evaluating shock, the central issue is inadequate tissue perfusion due to very low arterial pressure. Diastolic pressure reflects the pressure in the arteries between heartbeats and is influenced by systemic vascular resistance. If diastolic pressure falls below about 50 mmHg, the perfusion pressure between beats becomes critically low, making organ perfusion unlikely and aligning with shock physiology. In clinical terms, a mean arterial pressure around 60 mmHg or lower often accompanies this level of diastolic drop, signaling the need for rapid intervention. Among the given options, diastolic pressure less than 50 mmHg is the indicator most consistent with severe hypotension and shock. The other values indicate normal or high pressures or only milder hypotension that does not by itself define shock.

When evaluating shock, the central issue is inadequate tissue perfusion due to very low arterial pressure. Diastolic pressure reflects the pressure in the arteries between heartbeats and is influenced by systemic vascular resistance. If diastolic pressure falls below about 50 mmHg, the perfusion pressure between beats becomes critically low, making organ perfusion unlikely and aligning with shock physiology. In clinical terms, a mean arterial pressure around 60 mmHg or lower often accompanies this level of diastolic drop, signaling the need for rapid intervention. Among the given options, diastolic pressure less than 50 mmHg is the indicator most consistent with severe hypotension and shock. The other values indicate normal or high pressures or only milder hypotension that does not by itself define shock.