Free CCHT Exam Flashcards

The NNCC CCHT exam has 150 questions. Knowing the format helps you plan pacing and avoid spending too long on any single item.

The exam time limit is 3 hours, or about 72 seconds per question. Scenario practice helps because many items require application, not simple recall.

NNCC lists a passing standard score of 95 and states this is achieved by answering 74% of test questions correctly. Use the official standard instead of pass-rate guesses.

Clinical content is the largest blueprint area at 48-52%. It deserves the most study time because it covers patient care before, during, and after dialysis.

The main areas are Clinical, Technical, Environment, and Role Responsibilities. Safe answers often combine patient status, machine facts, infection control, and scope.

Most CCHT questions are application-level. Practice deciding what is unsafe, what to check, what to report, and which action follows facility protocol.

Applicants need a high school diploma or GED/equivalent and proof of hemodialysis technician training with classroom and supervised clinical experience.

CCHT certification is effective for 3 years and requires recertification. Tracking the cycle protects credential status and employment readiness.

A dialysis technician follows the prescription, facility policy, and qualified staff direction. The technician does not independently diagnose, prescribe, or change treatment orders.

Technicians collect and report data such as weight, vital signs, access findings, and symptoms. Abnormal findings are escalated before treatment proceeds.

Dry weight is the target post-dialysis weight when excess fluid has been removed without signs of fluid overload or dehydration. It guides ultrafiltration goals.

Pre-dialysis weight minus dry weight estimates fluid to remove, with 1 kg roughly equal to 1 liter. The goal must match the prescription and RN direction.

A severely elevated blood pressure before treatment should be reported to the nurse. Starting dialysis without evaluation can be unsafe.

Hypotension during dialysis often occurs when ultrafiltration exceeds vascular refilling. Report symptoms and follow protocol because rapid BP drops can threaten perfusion.

Cramping can signal rapid fluid removal or volume depletion. Check relevant treatment data, notify the nurse, and follow protocol rather than independently giving fluids or medications.

Chest pain with shortness of breath, pallor, or sweating is an emergency. Stop or pause treatment per protocol, call for help, and alert qualified staff immediately.

Sudden chest pain, dyspnea, coughing, cyanosis, or neurologic symptoms can suggest air embolism. Clamp lines, stop the pump per protocol, and get immediate help.

Hemolysis may present with back pain, chest pain, shortness of breath, cherry-colored blood, or machine issues. It is an emergency requiring immediate escalation.

Headache, nausea, restlessness, confusion, or seizures during or after dialysis can suggest disequilibrium. Report promptly because neurologic symptoms are unsafe.

High potassium can cause dangerous cardiac arrhythmias. A markedly elevated pre-dialysis potassium must be reported promptly and may affect urgency of treatment.

An AV fistula is a surgically created connection between an artery and vein. It usually has the best long-term patency but must mature before routine use.

An AV graft uses synthetic material to connect artery and vein. It can be used sooner than many fistulas but has higher infection and clotting risk.

A thrill is a palpable vibration and a bruit is an audible sound over the access. Absence or major change must be reported before cannulation.

AV fistula cannulation commonly uses about a 25 to 35 degree angle. Correct angle helps obtain flow while reducing infiltration and vessel trauma.

AV graft cannulation often uses a shallower angle than fistulas, commonly around 45 degrees or less depending on policy and access depth. Follow facility protocol.

Infiltration occurs when the needle moves outside the vessel and blood leaks into tissue. Swelling, pain, and poor flow require stopping and reporting per policy.

Redness, warmth, swelling, drainage, pain, fever, or chills can suggest infection. Report before cannulation because access infection can become life-threatening.

Buttonhole cannulation uses the same track for an AV fistula and requires strict technique. It is not appropriate for grafts and is avoided with infection concerns.

Abnormal arterial pressure can reflect poor blood flow from the access, needle position problems, line kinks, or clotting. Check the circuit and escalate per protocol.

High venous pressure can indicate venous needle position issues, a kink, clotting, or outflow obstruction. Investigating protects access and circuit safety.

Transmembrane pressure reflects pressure across the dialyzer membrane during ultrafiltration. Rising values can suggest clotting or flow problems that need attention.

Conductivity helps verify dialysate concentrate mixing. Dialysate outside acceptable conductivity range can cause dangerous electrolyte shifts and must not be ignored.

Dialysate pH is checked to confirm safe solution quality. Incorrect pH can harm patients and requires correction before treatment.

Dialysis exposes patients to large volumes of water, so treatment removes contaminants that could enter the bloodstream through the dialyzer.

Chlorine and chloramine must be checked because they can cause hemolysis if present in dialysis water. Failed tests require stopping use and reporting.

Reverse osmosis removes dissolved contaminants by forcing water across a semipermeable membrane. It is a core barrier in dialysis water treatment.

Dark streaks, rising pressures, or poor clearance can suggest clotting. Recognizing circuit clotting helps prevent blood loss and inadequate treatment.

Dialysis labs must be drawn at the correct time and site according to policy. Timing errors can misrepresent adequacy, electrolytes, or treatment response.

Standard precautions apply to all patients and include hand hygiene, gloves, PPE, sharps safety, and safe handling of blood-contaminated equipment.

Clean and disinfect the dialysis station and touched surfaces between patients according to policy. Environmental cleaning reduces cross-contamination risk.

Clean hands before and after patient contact, after glove removal, after exposure risk, and between dirty and clean tasks. Dialysis care has frequent contamination risk.

Use safety devices and dispose of needles immediately in approved sharps containers. Safe sharps handling protects staff and patients from bloodborne pathogens.

Contain the spill, use appropriate PPE, clean and disinfect with approved products, and follow facility policy. Blood spills are infection-control events.

Safety Data Sheets explain hazards, PPE, handling, storage, and exposure response for chemicals. Technicians should know where SDS information is available.

Emergency exits and pathways must remain clear. Dialysis patients may have limited mobility, so blocked exits create serious evacuation risk.

Protect patient information and discuss care only with authorized people for legitimate work purposes. Confidentiality supports patient rights and legal compliance.

Maintain a respectful therapeutic relationship and avoid personal, financial, or social boundary crossings. Boundaries protect patients and staff.

Document objective treatment data, interventions, patient responses, and reports according to policy. Accurate records support continuity, quality, and legal review.

Report abnormal symptoms, access problems, machine issues, and treatment variances to the appropriate licensed or qualified staff. Timely reporting supports safe decisions.

Protect privacy, explain actions, listen respectfully, and preserve modesty during care. Dignity is part of safe and ethical dialysis practice.