👤 By the CinnaRN Clinical Content Team🕐 Updated 2026-08-23🏷️ Physiological Adaptation🔖 Free to read, print, and share
Also known as: dialysis · HD · kidney machine · blood cleaning treatment · AV fistula
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Use this quick-reference guide to spot, treat, and prevent Hemodialysis on the NCLEX. Keep it handy during review and on exam day!
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📒 The 1-minute cheat sheet
📌 Access
AV fistula: feel THRILL, hear BRUIT
no BP/IV/blood draw in that arm
matures 6-8 wks before use
✅ Before
weigh pt, assess access patency
hold BP meds + dialyzable drugs
🚩 Report
no thrill/bruit → clot, EMERGENCY
disequilibrium syndr: HA, confusion
hypotension, cramps during
✅ After
weigh again, monitor for bleeding
check BP, watch for hypovolemia
📚 Hemodialysis — full study notes
The cheat sheet above is your quick recall card. These notes go deeper — what it is, what to do first, what must be reported, and what to teach.
Hemodialysis filters waste, excess fluid, and electrolytes from the blood through an artificial membrane (dialyzer) outside the body, typically three times a week for several hours. It requires vascular access, usually an arteriovenous (AV) fistula or graft, which needs weeks to mature before use. It is used for ESRD and severe AKI to replace lost kidney function.
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Key points
Understand these first
An AV fistula should have a palpable thrill (buzzing) and an audible bruit (whooshing) indicating patency.
Hypotension during dialysis is common from rapid fluid and volume removal.
Disequilibrium syndrome (headache, nausea, confusion, seizures) results from rapid solute shifts pulling fluid into the brain.
Heparin is used during the procedure, raising bleeding risk for several hours afterward.
Weight is measured before and after to determine fluid removed; large interdialytic gains stress the heart.
Many medications are held until after dialysis because they would be filtered out.
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Nursing priorities
What to do, in order
Assess the access for thrill and bruit every shift; report absence immediately as it signals clotting.
Take blood pressure in the NON-access arm and protect that arm from constriction.
Weigh the patient before and after treatment and monitor for hypotension during dialysis.
Hold antihypertensives and dialyzable medications until after treatment as ordered.
Monitor for bleeding after dialysis due to heparin use.
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Red flags — report now
Escalate immediately
No thrill or bruit, or a cool/pale/painful access limb - report immediately (possible clot or compromised flow).
Never take blood pressure, draw blood, start an IV, or place restraints on the access arm.
Profound hypotension or chest pain during dialysis - stop/slow treatment and notify provider.
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Labs & values
Numbers to know
Potassium: normal 3.5-5.0 mEq/L (corrected by dialysis)
BUN/Creatinine: drop after treatment
Hematocrit/Hemoglobin: monitor for dilution and anemia
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Patient teaching
What patients must know
Check the fistula daily for the thrill/buzz; report if it stops.
Do not let anyone take blood pressure or draw blood from the access arm; avoid tight sleeves, jewelry, or carrying heavy bags on it.
Follow fluid and diet limits between treatments to prevent excess weight gain.
❓ Hemodialysis: NCLEX FAQs
What are the priority nursing interventions for Hemodialysis?
Assess the access for thrill and bruit every shift; report absence immediately as it signals clotting. Take blood pressure in the NON-access arm and protect that arm from constriction. Weigh the patient before and after treatment and monitor for hypotension during dialysis. Hold antihypertensives and dialyzable medications until after treatment as ordered.
What are the warning signs of Hemodialysis a nurse must report?
No thrill or bruit, or a cool/pale/painful access limb - report immediately (possible clot or compromised flow). Never take blood pressure, draw blood, start an IV, or place restraints on the access arm. Disequilibrium syndrome signs (severe headache, confusion, seizures) require immediate intervention. Profound hypotension or chest pain during dialysis - stop/slow treatment and notify provider.
What do I need to know about Hemodialysis for the NCLEX?
An AV fistula should have a palpable thrill (buzzing) and an audible bruit (whooshing) indicating patency. Hypotension during dialysis is common from rapid fluid and volume removal. Disequilibrium syndrome (headache, nausea, confusion, seizures) results from rapid solute shifts pulling fluid into the brain. Heparin is used during the procedure, raising bleeding risk for several hours afterward.
What patient teaching is important for Hemodialysis?
Check the fistula daily for the thrill/buzz; report if it stops. Do not let anyone take blood pressure or draw blood from the access arm; avoid tight sleeves, jewelry, or carrying heavy bags on it. Follow fluid and diet limits between treatments to prevent excess weight gain.
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Quick Tip
An AV fistula should have a palpable thrill (buzzing) and an audible bruit (whooshing) indicating patency.