Module 9 — Hemodialysis Procedures

Sources: Condensed study notes based on Core Curriculum for the Dialysis Technician, 7th ed. (MEI), plus free CDC/CMS/NIDDK resources.

Technician role and scope

Study guide

Hemodialysis is a chain of safety-critical steps from station preparation through cleanup. A technician’s job is to follow the ordered plan, observe continuously, identify abnormal findings, and escalate promptly.
The RN generally performs the formal pre- and post-treatment assessment. The technician may collect weights and vital signs, observe access and patient condition, ask how the patient feels, and communicate changes.
Medication and solution duties depend on state law, certification, delegation, and clinic policy. Some jurisdictions permit selected technicians to prepare or give heparin, saline, or lidocaine; others do not.

Why answers are correct

Scope-of-practice boundaries protect the patient and the technician. A familiar task is not automatically an authorized task.

Limitations / traps

Never infer permission from another clinic or state. Do not administer, alter, or substitute a medication or treatment setting without authorized direction.

Clinical pearl / safety

When an order, patient identity, dose, or instruction is unclear: stop, keep the process safe, and ask the nurse or manager. Do not guess.

Exam cue

Observe, verify, document, and report—within scope.

Medications, needles, syringes, and IV saline

Study guide

A syringe has a sterile tip, a graduated barrel, and a plunger. The needle bevel, needle, and open hub must remain sterile; the protective cap may be handled without contaminating the needle.
Before drawing from a vial, perform hand hygiene, put on fresh gloves, confirm drug, dose, expiration, and vial status, and inspect the container and solution for damage, cloudiness, particles, or abnormal color. Discard or report questionable vials according to policy.
Use single-dose vials whenever possible. A multi-dose vial must be protected from contamination, labeled and handled according to policy, and never used if expired or left unlabeled after opening.
Prepare the ordered dose with aseptic technique, keep the syringe tip and needle sterile, remove air safely, and recheck the medication and dose before use. Dispose of sharps immediately in the approved container.
“Saline” in this module means sterile 0.9% normal saline. Verify the correct bag, inspect it, and spike/connect IV tubing using aseptic technique so the port, tubing pathway, and fluid remain sterile.

Why answers are correct

The open hub and syringe tip lead directly into a patient or sterile line. Touching them can introduce organisms even when the rest of the setup looks clean.

Limitations / traps

Do not touch sterile ends, reuse needles, use damaged or questionable containers, recap unsafely, or prepare a drug outside authorization. Follow the medication label, standing order, and local policy rather than memory.

Clinical pearl / safety

Read the label at least while selecting, drawing, and completing the preparation. Treat unexpected appearance, dose, or patient response as a reason to stop and call the nurse.

Exam cue

Right patient, drug, dose, route, time, and sterile pathway—within scope.

Body mechanics, falls, mobility, and transfers

Study guide

Musculoskeletal injury risk rises with awkward posture, repetitive motion, and forceful exertion. Use friction, leverage, gravity, equipment, and coworkers instead of trying to overpower a load.
Lift with feet about shoulder-width apart; face the object; bend at hips and knees; keep the load close; use legs and arms; and avoid twisting. Get help when the load is too heavy. Push heavy equipment rather than pulling when appropriate, keeping arms close.
Dialysis patients may be fall-prone because of diabetes, cardiovascular or neurologic disease, poor vision or balance, frailty, malnutrition, polypharmacy, prior falls, hypotension, cramps, or post-treatment electrolyte and volume changes.
Before a patient stands, check that the patient is steady, stand in front for support, and allow a pause. If instability appears, help the patient sit back down and involve the appropriate staff. Remove floor hazards and call for help if a fall begins; ease the patient down rather than trying to catch a falling body.
Canes offer the least stability and require balance and upper-body coordination. Crutches and walkers also require training. Encourage safe walking when possible, but match assistance to current strength and symptoms; a patient may need a wheelchair after treatment even if they arrived walking.
Use the clinic’s trained transfer method, equipment, and number of helpers. Protect the vascular access and bloodlines during every move.

Why answers are correct

A slow, safe transfer preserves mobility and prevents fractures, head injury, fear, loss of independence, and future falls. A patient’s mobility level can change during one treatment.

Limitations / traps

Never pull on an access arm, improvise a lift, twist while carrying, or assume the device used on arrival is still safe at discharge.

Clinical pearl / safety

Report new weakness, exhaustion, weight loss, unstable gait, dizziness, or a change in assistance needs to the nurse.

Exam cue

Pause after dialysis, assess stability, protect access, and use help/equipment.

Communication and accommodations

Study guide

Identify the patient, explain what you are doing, preserve privacy, and use plain language. Ask the patient to repeat or demonstrate important instructions rather than assuming understanding.
For vision impairment, identify yourself, describe the environment and each step, keep pathways clear, and offer an elbow or approved assistance. Do not grab or move the patient without explanation.
For hearing impairment, face the patient, gain attention before speaking, reduce background noise, speak clearly without shouting, and use the patient’s preferred communication aid or written instructions.
Adapt communication for language, literacy, cognition, anxiety, and cultural needs; use approved interpreters rather than relying on guesses or children.

Why answers are correct

The patient must be able to recognize symptoms, follow safety instructions, and participate in care. Communication failures can become treatment failures.

Clinical pearl / safety

Ask what help works best for the individual and document/report barriers that affect safe treatment.

Exam cue

Explain, confirm understanding, and preserve independence without sacrificing safety.

The ordered treatment plan

Study guide

Dialysis is performed only from a nephrologist’s prescription plus applicable standing orders. The treatment flow sheet may include patient identity/allergies and isolation or fall status; schedule and chair; target weight; treatment time; maximum UFR; Kt/V goal; machine and dialyzer; dialysate potassium, calcium, sodium, bicarbonate, and temperature; BFR/DFR; UF or sodium profiles; access and needle sizes; anticoagulation; medications; and ordered labs.
The nurse checks the machine setup and entered details. The technician must compare the patient, prescription, equipment, access, and medication orders before starting.
Avoid unsafe abbreviations and unclear handwritten orders. If an order is ambiguous or conflicts with the machine or flow sheet, do not interpret it independently—obtain clarification.

Why answers are correct

A wrong setting can alter fluid removal, electrolytes, temperature, anticoagulation, or clearance. Verification is a clinical safety barrier, not paperwork.

Limitations / traps

Do not change the target weight, UF goal, treatment time, BFR, dialysate composition, temperature, or heparin plan because a number “looks wrong.” Escalate it.

Clinical pearl / safety

Verify patient identity and allergies at the station and before medication or access connection. Recheck the ordered plan after any interruption or change.

Exam cue

Prescription first; if unclear, stop and clarify.

Station, dialysate, and machine setup

Study guide

Clean and disinfect the station before setup and between patients: machine surfaces, chair, jugs, surrounding surfaces, floor, and sharps container. Keep clean supplies away from dirty hands, gloves, and used equipment.
Dialysate combines treated RO water with acid and bicarbonate concentrates across a semipermeable dialyzer membrane. Verify the correct concentrate, cartridge/jug, expiration or use label, connection, and mixture. Follow manufacturer instructions for dry bicarbonate mixing.
Complete the machine’s prescribed pretreatment checks before a patient is connected. These may include water inlet pressure and flow, conductivity/concentrate proportioning, dialysate temperature, blood leak detector, alarms, pressures, UF control, and self-tests.
A conductivity or mixture problem can expose the patient to an unsafe electrolyte solution; a temperature problem can injure the patient. Treat every failed or unexplained test as a stop condition.
Prepare the bloodlines and dialyzer according to the machine and clinic procedure. Inspect packaging and tubing, connect in the correct direction, fill/prime with saline, remove air, and confirm the circuit is ready before patient connection.
Recirculation or saline circulation may be used during preparation. Keep the prescribed circuit closed, maintain asepsis, and do not connect a patient to an incompletely primed or unverified circuit.

Why answers are correct

Automated checks are safeguards, not substitutes for human observation. A machine can fail, an alarm can be mis-set, and a connection can leak even when a screen appears normal.

Limitations / traps

Never bypass an alarm, silence repeated alarms without finding the cause, use the wrong concentrate, or proceed after an incomplete self-test. Follow the specific machine manual and clinic policy.

Clinical pearl / safety

Verify the dialysate path, blood path, transducer protectors, drip chambers, clamps, connections, and alarm limits before treatment.

Exam cue

Clean station → correct prescription → correct concentrates → successful checks → primed, air-free circuit.

Patient evaluation before connection

Study guide

Confirm identity, allergies, ordered access, treatment plan, target weight, and current symptoms. Obtain pre-treatment weight and baseline vital signs as assigned, and compare with recent trends.
Assess general appearance, level of consciousness, breathing, pain, edema, nutrition or fluid status, mobility, and signs of infection or illness. Ask about dizziness, chest symptoms, shortness of breath, nausea, headache, cramps, and recent events.
Inspect and assess the vascular access according to policy: look for redness, swelling, drainage, aneurysm or skin changes; feel for a thrill when authorized; and listen for a bruit when required. Check that the planned needles, catheter, or access arm match the order.
Report abnormal findings before cannulation or treatment. The nurse determines whether the prescription or plan needs to change.

Why answers are correct

Weight, vital signs, symptoms, edema, and access findings establish the baseline used to judge fluid removal and complications.

Limitations / traps

Do not cannulate an infected, damaged, or questionable access, and do not treat a symptom as “usual” without reporting it.

Clinical pearl / safety

Preserve the access arm: no unnecessary pressure, blood pressure cuff, venipuncture, or constrictive clothing on a fistula/graft arm.

Exam cue

Baseline before needle: weight, vitals, symptoms, access, and safety status.

Initiating and stabilizing treatment

Study guide

Connect the patient only after the prescription, machine checks, circuit, patient assessment, and access connection have been verified. Use aseptic technique and the clinic’s cannulation or catheter procedure.
When the machine is ready, start blood flow at the ordered or policy-directed rate and manage saline according to whether the patient is receiving it, returning it, or the circuit is being primed. Follow the machine sequence exactly.
Watch arterial and venous pressures as blood flow is established. Confirm drip-chamber levels, tubing direction, clamps, access connections, air detectors, blood leak detector, UF goal, treatment time, and alarm limits.
Record start time, settings, access details, pre-treatment findings, and required checks. Remain with or directly observe the patient during connection and the early treatment period.

Why answers are correct

Pressure trends and chamber levels can reveal infiltration, poor inflow, clotting, disconnection, or an incorrect setup before a major blood loss occurs.

Limitations / traps

Do not normalize a new pressure, silence an alarm, increase flow, or alter UF to make numbers fit. Stop or pause the appropriate part of the system and notify the nurse according to policy.

Clinical pearl / safety

Keep the access and patient’s face visible. Recheck the patient immediately after initiation and after any setting or connection change.

Exam cue

Start slowly and deliberately; verify the patient, pressures, air protection, and alarms.

Monitoring during hemodialysis

Study guide

Monitor patient condition, access, extracorporeal circuit, machine readings, and treatment progress at the required frequency. Document observations and vital signs according to policy, and run the patient’s face and access regularly.
Watch for hypotension: dizziness, faintness, nausea, yawning, sweating, pallor, confusion, cramps, weakness, or a drop in blood pressure. Stop and respond under the standing order or nurse direction; do not leave the patient alone.
The circuit requires surveillance for air, blood leaks, clotting, line kinks or separation, loose connections, changing arterial/venous pressures, flow-rate changes, temperature, conductivity, UF performance, and anticoagulant delivery.
Machine sensors and alarms help detect air, blood, pressure, temperature, conductivity, and fluid-control problems, but humans must investigate the patient and equipment.
Treat an alarm as a signal to find the cause. Frequent alarms may indicate access or setup problems and may reduce delivered treatment when they stop blood flow or send dialysate to drain/bypass.
Eating, drinking, activities, and bathroom breaks follow clinic policy and patient risk. Keep the patient visible and protect all lines during any activity.

Why answers are correct

A patient can deteriorate while a machine continues to display numbers. Early recognition of access bleeding, hypotension, air, or blood loss limits harm.

Limitations / traps

Never repeatedly reset an alarm just to restore quiet operation. Never cover the access, leave a vulnerable patient unobserved, or allow lines to become trapped beneath the patient.

Clinical pearl / safety

Staff should maintain current CPR certification and know emergency equipment and escalation routes. Infection-control and environmental safety—clean spills, remove clutter, and keep pathways open—are part of monitoring.

Exam cue

Every alarm requires a cause check, patient check, and appropriate response.

Blood-loss prevention and response

Study guide

Serious blood loss can result from access needle dislodgement, line separation, loose tape, an unsecured connection, dialyzer rupture, blood leak, or a hidden access under clothing or a blanket. Risk is higher when a patient is confused, restless, hypotensive, visually impaired, or unable to report symptoms.
Keep the vascular access visible and tubing secured. Check tape, needle position, connections, pressures, and the patient’s face throughout treatment.
Blood loss becomes progressively more dangerous as a larger fraction of circulating volume is lost: small losses may cause few signs, while larger losses can cause tachycardia, hypotension, confusion, shock, unconsciousness, and death.
If a bleed or disconnection is suspected, call for help, stop the blood pump and clamp/secure the lines as directed, apply pressure to the access or bleeding site, keep the patient safe, and follow the emergency protocol. Do not waste time trying to silence an alarm first.

Why answers are correct

The extracorporeal circuit can lose a clinically significant volume quickly. Rapid interruption and direct pressure are time-critical.

Limitations / traps

Do not reconnect contaminated or separated bloodlines unless the authorized emergency procedure specifically allows it. Do not leave a bleeding patient to fetch supplies.

Clinical pearl / safety

Know which clamp, pump stop, emergency button, and emergency call route apply to the machine in use; practice before an event.

Exam cue

Visible access + secured lines + immediate response to bleeding.

Patient comfort, medication timing, and anticoagulation

Study guide

Offer safe comfort measures and suitable activities while maintaining visibility of the patient, access, and lines. Teach patients to report dizziness, nausea, cramps, chest discomfort, shortness of breath, headache, pain, itching, chills, or anything that feels different.
Give ordered medications at the prescribed time and route. Some are intentionally given during or near the end of dialysis because dialysis may remove them or because the timing is used to improve safety or effectiveness.
Heparin is commonly used to prevent clotting in the extracorporeal circuit. Possible schedules include an initial bolus, continuous infusion, intermittent doses, or a tightly limited plan; use only the ordered method and stop time.
Too much anticoagulation may cause prolonged access bleeding, bruising, or bleeding elsewhere. Too little may produce clots, dark or streaked dialyzer fibers, rising pressures, or circuit loss. Report either pattern.
Heparin-free treatment may use repeated saline flushes or a continuous saline infusion. Saline added to the circuit must be included in the fluid-removal plan as directed so the patient does not receive unintended net fluid.
Citrate or another anticoagulant may be used under a separate protocol; monitoring and reversal requirements are not interchangeable with heparin.

Why answers are correct

Anticoagulation balances circuit patency against patient bleeding risk. Medication timing and fluid accounting affect both treatment adequacy and post-treatment status.

Limitations / traps

Never independently change heparin, stop time, saline flush volume, or UF goal. Do not assume a bleeding risk is solved by simply withholding medication; notify the nurse.

Clinical pearl / safety

Confirm the anticoagulant order, bolus/infusion settings, stop time, and post-treatment bleeding plan during setup and handoff.

Exam cue

Prevent clotting without causing bleeding; account for every infused volume.

Bathroom breaks and interruptions

Study guide

Before a patient leaves the chair, assess symptoms and vital signs as required, explain the plan, secure needles and bloodlines, and involve the nurse. Use the prescribed procedure to pause blood flow, return or maintain blood safely, and protect the access.
Maintain privacy while keeping the patient and circuit safe. Use appropriate mobility assistance and check for dizziness or hypotension before standing.
On return, reassess the patient and access, reconnect or resume treatment only after verifying connections, settings, pressures, and the authorized plan. Record interruptions and lost treatment time.

Why answers are correct

A bathroom trip combines fall risk, access traction, blood loss, and reduced delivered dose. It cannot be treated as an ordinary chair transfer.

Exam cue

Assess → secure/interrupt per policy → assist safely → verify before resuming → document.

Ending treatment and rinseback

Study guide

At the ordered end time, verify the treatment plan and required samples, then follow the machine-specific termination and blood-rinseback procedure. The goal is to return the patient’s blood safely without introducing air or contamination.
Post-dialysis BUN is drawn according to policy, commonly using a slow-flow method or a stop-dialysate-flow method. For slow flow, blood flow is reduced to the prescribed low rate, allowed to circulate for the specified interval, and the sample is drawn from the arterial access/port before rinseback. The alternative method keeps blood flow unchanged while dialysate is bypassed for the required time.
Post-treatment weights and vital signs are obtained and compared with pre-treatment values. Assess for dizziness, weakness, cramps, nausea, hypotension, orthostatic change, bleeding, and access condition.
Remove needles using the approved technique and apply direct pressure until hemostasis is achieved. Catheter disconnection, dressing, and locking are performed only under the authorized procedure.
Evaluate rinseback visually according to local categories: a clear/efficient return is preferable; residual blood, clotting, or a poor return should be reported and documented.

Why answers are correct

Rinseback, sample timing, and post-treatment measurements affect blood conservation, Kt/V accuracy, patient safety, and interpretation of the treatment.

Limitations / traps

Do not draw a post-BUN at an unapproved time, dilute it with saline/heparin, rush a hypotensive patient to standing, or release access pressure before hemostasis.

Clinical pearl / safety

If blood pressure is low or the patient is symptomatic, keep the patient safe in the chair, notify the nurse, and follow the standing order. Recheck rather than assuming the patient can leave.

Exam cue

Finish the ordered treatment, return blood safely, reassess, achieve hemostasis, and document.

Documentation and handoff

Study guide

Charting is both a patient-care communication tool and a legal record. Record objective findings, times, prescribed settings, access details, vital signs, weights, medications, alarms, interventions, samples, patient response, interruptions, and abnormal findings.
Good charting is timely, legible, accurate, complete, factual, and attributable to the person who performed the task. Use only approved abbreviations and describe what was observed and done rather than inserting opinions.
Paper records should use the required ink and identification, include patient name on each page, avoid blank lines, and correct errors with the approved single-line correction, date/time, and initials. Never erase, obscure, backdate, or create a misleading late entry.
Electronic charting requires a unique login, strong password protection, patient-specific notes, approved error-correction methods, protection of private data, and logging off when finished. Never chart under another person’s account.
Handoff should identify current treatment status, access, settings, symptoms, abnormal findings, interventions, pending labs, and any change the next caregiver must watch.

Why answers are correct

A clear record lets the next caregiver reconstruct what happened and supports continuity, quality review, and legal accountability.

Limitations / traps

Do not chart from memory later when contemporaneous documentation is required, copy forward an incorrect value, use unapproved abbreviations, or record an action not actually performed.

Clinical pearl / safety

Document the patient’s response and the nurse/provider notification, not merely that an alarm occurred.

Exam cue

If it was not documented correctly, continuity and proof of care are compromised.

Cleaning, disinfection, and equipment turnover

Study guide

After treatment, perform hand hygiene and use the PPE and waste streams required by policy. Dispose of blood-contaminated tubing, needles, dressings, and other single-use supplies appropriately; never recap or reuse sharps.
Remove waste and reusable supplies safely, then clean and disinfect the chair, machine surfaces, station, and nearby areas. Apply enough approved disinfectant to keep surfaces wet for the required contact time, wipe as directed, and allow air drying.
Disinfect reusable equipment after each patient and follow the manufacturer’s compatibility and contact-time instructions. Do not place clean items on a contaminated surface.
Machine disinfection may be heat-based or chemical. Use the machine’s complete cycle, correct disinfectant concentration, required temperature/contact time, and rinse procedure. Keep the machine unavailable until the cycle is complete.
Test rinse water as required to confirm that residual disinfectant is absent before the next treatment. A failed test or incomplete cycle is a stop-and-report condition.

Why answers are correct

Surface cleaning removes soil; disinfection reduces pathogens. Inadequate contact time, missed areas, or residual chemical can expose the next patient to infection or injury.

Limitations / traps

Never shorten a cycle, mix chemicals, rely on a visibly clean surface, or use a machine before rinse verification. Follow the product label and clinic infection-control policy.

Clinical pearl / safety

Cleaning is part of treatment, not optional housekeeping. Reset the station so the next patient receives a safe environment.

Exam cue

Clean, disinfect, complete the cycle, verify rinse, then release equipment.

Measuring dialysis adequacy: Kt/V and UKM

Study guide

Kt/V estimates delivered urea clearance relative to the patient’s body-water volume: K is dialyzer clearance, t is treatment time, and V is distribution volume of urea/estimated body water. Urea is used as a practical marker of removal of nitrogenous waste.
Urea concentration changes quickly during treatment and may rebound after treatment as urea redistributes from other body compartments. Because measuring every compartment is impractical, a single-pool Kt/V model uses a pre-HD and an immediate post-HD BUN with prescribed sampling technique.
Pre- and post-treatment BUN samples are commonly collected monthly during the same treatment. Do not dilute the sample; draw pre-BUN immediately before treatment. Follow access/catheter withdrawal and flushing policy.
The displayed guidance identifies a minimum spKt/V floor of about 1.2 and a typical target of about 1.4 for patients treated three times weekly; more frequent or longer treatments use other calculations. Residual kidney function can be added to dialysis clearance, standard Kt/V can estimate longer/more frequent schedules, and an equilibrated Kt/V accounts for post-treatment rebound.
Factors lowering delivered clearance include a small or clotted dialyzer, poor access blood flow, incorrect BFR/DFR or pump calibration, reduced pump speed, access recirculation, and settings that do not match the prescription.
Factors reducing effective treatment time include a short prescription, early termination, bathroom breaks, and alarms that stop blood flow or put dialysate into bypass. A few minutes lost every treatment accumulate substantially over a year.
V depends on body-water volume, so accurate pre/post weights matter. A major body-composition change must be recorded so the calculation can be interpreted correctly.
If a result is unexpectedly low, repeat/check the test and review treatment length, BFR/DFR, weights, scale accuracy, sampling technique, computer orders, needle placement, reversal, and recirculation before drawing conclusions.
Adequacy is not only a number. Also assess nutritional status, electrolytes, symptoms, and the patient’s sense of well-being. Poor dialysis may cause uremia, appetite loss, muscle wasting, low albumin, neuropathy, bone/joint problems, hospitalization, and shortened life.

Why answers are correct

Kt/V is an estimate that links clearance, time, and body-water volume; errors in any component can make the result misleading. Clinical status provides an essential cross-check.

Limitations / traps

Do not treat the minimum as an optimal ceiling, compare values without knowing the model and schedule, or dismiss a low value without checking sampling and delivery. Do not draw conclusions from a contaminated, diluted, mistimed, or mislabeled specimen.

Clinical pearl / safety

Protect treatment time. Accurate setup, prompt alarm investigation, reliable weights, correct sampling, and complete documentation all support adequacy.

Exam cue

Adequacy = clearance × time ÷ distribution volume, interpreted with the patient—not in isolation.

Module 9 closeout

Vocabulary

Uncommon words from this chapter. Plain definitions + a short dialysis-related example.

scope: The tasks a technician is trained, certified, and allowed to do.; Example. A familiar heparin task is still outside scope if the state or clinic does not authorize it.
aseptic: Keeping sterile tips, ports, and fluid pathways free of germs.; Example. The open syringe hub must stay aseptic because it leads into a patient or sterile line.
polypharmacy: Taking many medicines at once, which can raise fall and side-effect risk.; Example. Polypharmacy is one reason dialysis patients may be unsteady after treatment.
musculoskeletal: Related to muscles, joints, and the skeleton.; Example. Use legs and a wide stance to lower musculoskeletal injury when moving equipment.
orthostatic: A blood-pressure drop that appears when a person stands.; Example. Check for orthostatic change before sending a patient out after dialysis.
conductivity: A mixing check that dialysate salts are in the expected electrical range.; Example. A failed conductivity test is a stop condition before connection.
transducer protector: A filter that keeps blood or fluid out of the machine's pressure sensor.; Example. Confirm transducer protectors are dry and correctly seated before treatment.
recirculation: Saline or blood circulating in the circuit, or already-cleaned blood being redrawn.; Example. Saline recirculation may be used during setup; access recirculation later can lower dose.
hemostasis: Bleeding that has actually stopped.; Example. Do not release access pressure or send the patient out before hemostasis.
rinseback: Returning the patient's blood from the circuit at the end of treatment.; Example. Rinseback must avoid air and contamination while conserving blood.
contemporaneous: Written at the time the work is done, not from memory later.; Example. Contemporaneous charting is required so the next caregiver can reconstruct the treatment.
attributable: Clearly tied to the person who did the task.; Example. Good charting is timely, factual, and attributable.
residual disinfectant: Cleaning chemical still left after a disinfection cycle.; Example. Test rinse water so residual disinfectant is gone before the next patient.
Kt/V: An estimate of delivered urea clearance compared with the patient's body-water volume.; Example. A few minutes lost each treatment can pull Kt/V down over a year.
urea: A nitrogen waste used as a practical marker of dialysis clearance.; Example. Urea can rebound after treatment as it moves back from other body spaces.
rebound: A rise in a blood value after treatment as wastes redistribute.; Example. Equilibrated Kt/V accounts for post-treatment urea rebound.
adequacy: Whether the delivered treatment is enough, judged by numbers and how the person feels.; Example. Adequacy is not only Kt/V; nutrition, electrolytes, and symptoms also matter.
anticoagulation: The ordered plan to limit clotting in the extracorporeal circuit.; Example. Too much anticoagulation can prolong bleeding; too little can clot the dialyzer.
hypotension: Blood pressure that is too low for that patient.; Example. Yawning, sweating, or cramps can be early hypotension during UF.
delegation: A licensed clinician assigning a task the technician is trained and allowed to do.; Example. Delegation never lets a technician guess a dose or change a prescription.

Must-know checklist

Verify scope, patient identity, allergies, prescription, access, machine, concentrates, and alarms before connection.
Obtain and compare weight, vital signs, symptoms, edema, and access findings; report abnormalities.
Keep the patient’s face and vascular access visible. Investigate every alarm and every pressure change.
Prevent falls, blood loss, air entry, infection, and medication errors by using the approved sequence and asking for help early.
End treatment safely: samples at the correct time, rinseback, post-vitals/weight, hemostasis, reassessment, handoff, charting, cleanup, disinfection, and rinse verification.
Treat Kt/V as a delivery estimate; protect treatment time and verify suspicious results.

Scope note

This study guide is educational and intentionally does not replace state law, the nephrologist’s prescription, RN direction, manufacturer instructions, emergency policy, or hands-on competency validation.