UK vs US Blood Pressure Guidelines

Understanding the differences between NHS and ACC/AHA blood pressure classifications

UK NHS Guidelines

Healthy
90-120 / 60-80 mmHg
Slightly Raised
121-134 / 81-84 mmHg
High
135+ / 85+ mmHg
Low
70-89 / 40-59 mmHg

Key Features:

  • Simpler 4-zone system
  • Includes "Low" category
  • Higher threshold for "High" (135/85)
  • Emphasizes home monitoring

US ACC/AHA Guidelines

Normal
<120 / <80 mmHg
Elevated
120-129 / <80 mmHg
Stage 1
130-139 / 80-89 mmHg
Stage 2
140+ / 90+ mmHg

Key Features:

  • More detailed staging system
  • Lower threshold for treatment (130/80)
  • Separate "Elevated" category
  • Focus on cardiovascular risk

Key Differences

AspectUK NHSUS ACC/AHA
High BP Threshold135/85 mmHg130/80 mmHg
Categories4 zones4 stages
Low BP RecognitionYes (separate category)No specific category
Treatment ApproachConservative, lifestyle firstEarlier intervention

Which Should You Follow?

Both guidelines are evidence-based but reflect different healthcare philosophies:

  • UK NHS: More conservative approach, emphasizes lifestyle changes and home monitoring
  • US ACC/AHA: More aggressive treatment to prevent cardiovascular events
  • Your location: Follow your local healthcare system's guidelines
  • Individual factors: Your doctor will consider your overall health and risk factors

Important: Always consult with your healthcare provider about which guidelines and treatment approach are most appropriate for your individual situation.

Test Your Knowledge

See how different readings are classified under each guideline:

125/82132/86138/88145/92