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How is pulse pressure defined?

  1. Average blood pressure over time

  2. Difference between systolic and diastolic pressure

  3. Total heart rate and blood volume

  4. Measurement of arterial resistance

The correct answer is: Difference between systolic and diastolic pressure

Pulse pressure is defined as the difference between systolic and diastolic pressure. This measurement provides important insights into a person's cardiovascular health. Systolic pressure is the force exerted when the heart beats and pumps blood into the arteries, while diastolic pressure is the force when the heart is at rest between beats. A wide pulse pressure may indicate conditions such as arteriosclerosis or head injury, while a narrow pulse pressure could suggest shock or heart failure. Monitoring this difference allows healthcare providers to assess the overall state of the circulatory system and can guide clinical decision-making in emergency and critical care settings. Understanding pulse pressure is crucial for EMTs as it helps them recognize and respond to potential life-threatening situations.