The blood pressure log your doctor actually wants
If your readings have ever been waved off with "we'll check again next visit," this is the fix. A structured 7-day home blood pressure log — done with proper technique — is what hypertension guidelines recommend before confirming a diagnosis or changing treatment. Here's exactly how to keep one.
The 7-day protocol, step by step
- 01
Rest for five minutes
Sit quietly with your back supported, feet flat on the floor, legs uncrossed. No caffeine, exercise, or smoking in the previous 30 minutes.
- 02
Position the cuff correctly
Place the cuff on a bare upper arm at heart level. Support your arm on a table. Don't talk during the measurement.
- 03
Take two readings, one minute apart
Record both readings exactly as shown — systolic, diastolic, and pulse. Don't round numbers or skip 'bad' readings.
- 04
Repeat morning and evening for 7 days
Two readings each morning (before medication and coffee) and two each evening. That's the schedule hypertension guidelines recommend for home confirmation.
- 05
Average the results — excluding day one
Clinicians typically average all readings and often discard the first day while you get used to the routine. The average matters far more than any single reading.
The mistakes that ruin a week of readings
- Skipping readings that 'look wrong' — your clinician needs the real distribution, not a curated one.
- Measuring over clothing or with the arm hanging — both inflate numbers.
- Only measuring when you feel off — that biases the log toward your worst moments.
- Coffee, a cigarette, or a workout in the 30 minutes before a reading.
- Handing over 28 raw numbers with no times, context, or averages.
From log to doctor-ready report
The log itself is the raw material. What your clinician really wants is the synthesis: overall and morning/evening averages (often excluding day one), how variable your readings are, what share sits above 130/80, and any patterns — salt, sleep, missed medication — that move your numbers. Cuff guides the full 7-day protocol with reminders and technique cues, then builds that synthesis automatically as a clean PDF. See a sample report.
Common questions
Why keep a blood pressure log at all?+
A single office reading is a snapshot — and often inflated by white-coat effect. A structured home log over about a week is what guidelines recommend before confirming a hypertension diagnosis or adjusting medication.
What should a blood pressure log include?+
Date, time, systolic, diastolic, pulse, and context: which arm, before/after medication, sleep, caffeine, exercise, salt, and stress. The context is what lets your clinician interpret patterns instead of isolated numbers.
Paper log or an app?+
Paper works, but an app timestamps every reading automatically, computes the averages the way clinicians do, flags dangerous readings immediately, and produces a clean PDF instead of a hand-written table.
What numbers count as high blood pressure?+
Per the 2017 ACC/AHA guideline: below 120/80 is normal; 120–129 systolic is elevated; 130/80 or higher is Stage 1 hypertension; 140/90 or higher is Stage 2; above 180/120 needs urgent medical attention.
Cuff is a logging and organization tool, not a medical device. It does not measure blood pressure, diagnose any condition, or replace professional medical advice. Reference ranges follow the 2017 ACC/AHA guideline. Always consult a qualified clinician about your readings.