CCHT Practice Questions (2026) — Free Sample Questions with Answers

Answer: D

Set the venous low-pressure limit wider to reduce nuisance alarms: Widening limits makes a pressure drop even less likely to trigger an alarm, increasing the risk of unrecognized blood loss.

Rely on the venous pressure alarm to stop the blood pump promptly: When a venous needle dislodges, the drop in venous pressure may be too small to cross the alarm limit, so the pump can keep running.

Cover the access arm with a blanket so the patient stays warm and still: Covering the access is what allowed the event to go unseen; access and lines must remain visible.

Keep the access, needles and bloodline connections uncovered and visible: Correct. Because pressure alarms may not detect venous needle dislodgement, direct visual checks of uncovered, securely taped needles are the key safeguard.

Venous needle dislodgement may not trigger the venous pressure alarm. Tape needles securely and keep the access and connections visible at all times.

Answer: C

2.3 L, subtracting intake and rinseback from the weight gain: Fluid given during treatment adds to the volume that must be removed; subtracting it would leave the patient about 1 L above target.

2.8 L, the weight gain alone without any added volumes: 2.8 kg is the interdialytic gain only; ignoring the 500 mL of intake and rinseback would leave the patient above dry weight.

3.3 L, the weight gain plus intake and rinseback volumes: Correct. 84.6 − 81.8 = 2.8 kg (about 2.8 L) + 0.2 L + 0.3 L = 3.3 L.

3.6 L, the weight gain plus 0.8 L as an added safety margin: Adding an unordered margin removes fluid below the prescribed target weight and risks hypotension and cramping.

UF goal = (pre-weight − target weight) + fluids the patient will receive during treatment (oral intake, saline, rinseback), with 1 kg treated as 1 L.

Answer: C

The venous needle has infiltrated the tissue around the vein: Venous infiltration raises venous pressure; here venous pressure is unchanged.

The dialyzer membrane has ruptured and is leaking blood: A membrane rupture triggers the blood leak detector, not an arterial pressure alarm.

The arterial needle is against the vessel wall, limiting inflow: Correct. A more negative pre-pump pressure means the pump is pulling against restricted inflow: needle position, kinked line, clamp or access stenosis.

The dialysate conductivity has drifted out of the safe range: Conductivity problems trigger dialysate-side alarms and bypass, not blood-side arterial pressure alarms.

More negative arterial pressure = inflow problem (needle position, kinks, clamps, poor access flow). High venous pressure = outflow problem (infiltration, clotting, venous stenosis).

Answer: C

Start treatments, since 0.2 mg/L is within the allowed limit: Total chlorine must be below 0.1 mg/L; 0.2 mg/L is breakthrough and cannot be ignored.

Regenerate the water softener with brine to remove the chlorine: Softeners exchange hardness ions; they do not remove chlorine or chloramine, which carbon adsorbs.

Test after the polisher tank and notify the supervisor per policy: Correct. Worker breakthrough means checking the polisher; if it is also 0.1 mg/L or more, treatments must stop; the worker tank needs replacement.

Bypass both carbon tanks and supply the RO with softened water: Bypassing carbon sends chloramine to the RO and patients, risking hemolysis.

Carbon adsorption removes chlorine/chloramine. Worker tank breakthrough → test the polisher; polisher at or above 0.1 mg/L total chlorine → stop dialysis and notify.

Answer: D

Treat him in the open unit as long as he wears a gown and mask: Gown and mask do not substitute for isolation; HBV survives on surfaces and spreads through environmental contamination.

Reprocess his dialyzer using the facility's standard reuse procedure: CDC recommends that HBsAg-positive patients not participate in dialyzer reuse.

Assign his technician to also cover HBV-susceptible patients: Staff caring for HBsAg-positive patients should not care for susceptible patients at the same time.

Dialyze him in an isolation room with dedicated machine and supplies: Correct. HBsAg-positive patients are dialyzed in a separate room with dedicated machine, equipment, supplies and staff.

HBsAg+ patient: isolation room, dedicated machine/supplies, staff not caring for susceptible patients on the same shift, no dialyzer reuse; vaccinate susceptible patients and staff.

Answer: A

Explain why full treatment time matters and notify the nurse of the request: Correct. Technicians cannot change the prescription; they reinforce the importance of adherence and report the request so the nurse can address it.

Shorten the treatment and raise the blood flow to make up the difference: Changing time or blood flow alters the prescription, which is outside the technician's scope.

Refuse the request and tell the patient he cannot leave until finished: Patients have the right to refuse treatment; the issue must go to the nurse, and the patient must not be held against his will.

Shorten the treatment now and document the reason at the end of shift: Acting first and documenting later bypasses the nurse and the prescription.

The technician supports adherence and reports deviation requests to the nurse; only the prescriber or nurse per protocol changes the treatment plan.