To calculate the mean arterial pressure (MAP) from a blood pressure reading, you can use the following formula:
\[ \text{MAP} = \text{DBP} + \frac{1}{3}(\text{SBP} - \text{DBP}) \]
Where:
- SBP = Systolic Blood Pressure (the first number, 110 mmHg in this case)
- DBP = Diastolic Blood Pressure (the second number, 70 mmHg in this case)
Given the values:
- SBP = 110 mmHg
- DBP = 70 mmHg
Plugging into the formula:
\[ \text{MAP} = 70 + \frac{1}{3}(110 - 70) \] \[ \text{MAP} = 70 + \frac{1}{3}(40) \] \[ \text{MAP} = 70 + \frac{40}{3} \] \[ \text{MAP} = 70 + 13.33 \] \[ \text{MAP} \approx 83.33 \text{ mmHg} \]
Therefore, the mean arterial pressure for a blood pressure of 110 over 70 is approximately 83.33 mmHg.