Checking your blood pressure at home between treatments can help you and your care team spot patterns that a single in-clinic reading might miss. The technique matters as much as the number — and if you have a fistula or graft, one step is different from what a general blood pressure guide will tell you.
Quick answer
Sit quietly for 5 minutes first, avoid caffeine or exercise beforehand, support your arm at heart level, and take two readings a minute apart. If you have a fistula or graft, never use that arm for the cuff — use your other arm instead. Record what you find and bring it to your care team rather than adjusting anything yourself based on the number.
Print this guide
Download instantly. No email address is required.
You already have the file.
Want new planning tools as we publish them? Leave an email. We send tools, not a newsletter dump. Unsubscribe anytime.
Before you measure
A few minutes of setup makes the reading more accurate:
- Avoid caffeine, smoking, and exercise for at least 30 minutes beforehand
- Empty your bladder
- Sit quietly for 5 minutes without talking, scrolling your phone, or watching TV
- Try to measure at about the same time each day so readings are easier to compare
How to take an accurate reading
- Sit in a chair with your back supported, feet flat on the floor, and legs uncrossed.
- Rest your arm on a flat surface so the cuff sits at heart level. A pillow under your arm can help.
- Place a properly fitting cuff directly on bare skin, with the bottom edge just above your elbow crease — not over a sleeve.
- Stay still and quiet while the cuff inflates.
- Take a second reading about one minute after the first, and record both.
Ask your care team to check that your cuff is the correct size for your arm and to watch you take a reading at least once — a cuff that is too small or too large can throw off the number even when your technique is otherwise correct.
If you have a fistula, graft, or catheter
Never place a blood pressure cuff on your access arm. The pressure from the cuff can damage a fistula or graft, and readings from that arm are not reliable anyway. Always use your non-access arm instead, and remind anyone else taking your blood pressure — a family member, a pharmacist, an urgent care nurse — that the access arm is off-limits for cuffs, needle sticks, and IVs. If both arms have an access, ask your care team which arm is safe to use, or whether wrist or other monitoring is more appropriate for you.
See How to Protect Your Fistula or Graft: Everyday Do’s and Don’ts for the full list of everyday access precautions.
Recording your numbers
A single reading tells you very little on its own. What helps your care team is a pattern over days and weeks — readings alongside symptoms, time of day, and how close you are to your next treatment.
The free Blood Pressure Log gives you a simple place to record readings pre-treatment, post-treatment, or at home. If you would rather track everything on one page, the Daily Treatment Tracker combines blood pressure with weight, fluid, and symptoms in a single row per treatment.
When a reading needs attention
Your target blood pressure range is set by your care team, not by this guide, and it can be different from general population guidelines because of dialysis, medications, and your access. That said, one widely recognized threshold applies to anyone: a reading above 180/120 mm Hg is considered a hypertensive crisis.
- If you get a reading above 180/120, wait a minute and take it again.
- If it is still that high and you have chest pain, shortness of breath, back pain, numbness or weakness, vision changes, or trouble speaking, call 911. This is a medical emergency — do not wait to see if it comes down on its own.
- If it is still that high without those symptoms, contact your dialysis team or doctor promptly rather than calling 911.
- For any reading that feels unusually high or low for you, or comes with dizziness, weakness, swelling, shortness of breath, or unusual fatigue, tell your care team — even if it does not reach the numbers above.
Do not change your medications, target weight, or dialysis treatment based on a home reading unless your care team has told you to. A single unusual number is a reason to call and ask, not a reason to self-adjust.
Key points
- Prepare the same way every time: no caffeine or exercise beforehand, empty bladder, 5 quiet minutes.
- Support your arm at heart level, use a properly fitting cuff on bare skin, and take two readings a minute apart.
- Never use your fistula or graft arm for the cuff — use the other arm instead.
- A reading above 180/120 with symptoms like chest pain or trouble breathing is a 911 emergency.
- Report unusual readings to your care team instead of adjusting your own treatment or medications.
General education only
Renal Care Planner provides general educational information and planning resources. It does not provide individualized medical advice, diagnosis, or treatment recommendations. Your blood pressure targets, monitoring schedule, and which arm is safe to use are set by your dialysis care team. Seek emergency care for a hypertensive crisis with warning symptoms.