How to Calculate Mean Arterial Pressure (MAP)

Introduction

• Presenter: Sarah from registernurseRN.com
• Topic: Calculating Mean Arterial Pressure (MAP)
• Extra Practice: Free quiz available at the end of the YouTube video

What is Mean Arterial Pressure (MAP)?

• Definition: Pressure in the arteries during one cardiac cycle
• Function: Indicates how well vital organs (e.g., renal system, brain) are being perfused
• Importance: Critical for maintaining cerebral perfusion pressure (especially relevant for conditions like increased intracranial pressure)

Formula to Calculate MAP

• Formula:

  [ MAP = \frac{(Diastolic \ Blood \ Pressure \times 2) + Systolic \ Blood \ Pressure}{3} ]

  • Diastolic Blood Pressure (DBP): Bottom number
  • Systolic Blood Pressure (SBP): Top number

Example Calculation

• Given Blood Pressure (BP): 102/70
• Steps:
  1. Identify Diastolic BP: 70
  2. Multiply Diastolic BP by 2: 70 × 2 = 140
  3. Add Systolic BP to the result: 140 + 102 = 242
  4. Divide by 3: 242 / 3 = 80.6 (repeating)
  5. Round Off: MAP ≈ 81

Interpretation

• MAP Value (Example): 81
• Normal Range: Within normal limits

Conclusion

• Summary: Explanation of MAP and its calculation
• Reminder: Free quiz for extra practice problems
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