During a pre-dialysis assessment, a patient's standing weight is 2.4 kg above their estimated dry weight. What is the most appropriate first action for the technician?
Patient Care And Clinical Practice
Question · Easy
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How frequently should blood pressure and pulse be assessed and documented during a routine in-center hemodialysis treatment?
Chapter 1: CCHT-A Examination Blueprint and Advanced Technician Scope
1.1 CCHT-A Blueprint, Eligibility, Scoring, and Test-Day Logistics
Study guide
Which vascular access has the lowest risk of infection and is considered the gold standard for chronic hemodialysis?
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A patient becomes diaphoretic, nauseated, and reports cramping 90 minutes into treatment. Blood pressure is 82/48 mm Hg, down from a pre-dialysis reading of 138/86 mm Hg. What is the most appropriate first action?
Which statement best describes the rope-ladder cannulation technique for an AV fistula?
Which assessment is most important after a hemodialysis treatment is terminated and the patient is preparing to leave the unit?
1.2 Application-Level Reasoning and the CCHT to CCHT-A Scope Step-Up
A technician palpates an AV fistula before cannulation and feels no thrill. The bruit is also absent on auscultation. What is the most appropriate next action?
Sudden onset of chest pain, dyspnea, and a feeling of impending doom in a hemodialysis patient should make the technician most suspicious of which complication?
Why is it important to ask a hemodialysis patient about recent missed treatments during the pre-dialysis assessment?
A patient develops severe muscle cramps during the last hour of dialysis. The technician has already stopped ultrafiltration. Which dialysate adjustment, ordered by the nurse or physician, most directly relieves cramping?
Question · Medium
Chapter 2: Renal Anatomy, Pathophysiology, and Dialysis Principles
2.1 Renal Anatomy, Physiology, and AKI vs. CKD Progression
How long does an AV graft typically need to mature before it can be cannulated for hemodialysis?
What is the recommended minimum distance between the arterial and venous needles when cannulating an AV fistula or graft?
Which finding most strongly suggests dialyzer reaction (anaphylactoid type B reaction) rather than ordinary first-use response?
After needle removal from an AV fistula, how long should manual pressure be maintained at the cannulation site before checking for hemostasis?
2.2 Principles of Solute and Fluid Transport: Diffusion, Convection, Osmosis, and Ultrafiltration
Which set of findings is most consistent with acute hemolysis during hemodialysis?
Which pre-dialysis lab value would most concern the technician and warrant immediate notification of the nurse before initiating treatment?
A patient with a tunneled central venous catheter develops a fever of 38.6 C and chills 30 minutes after the start of dialysis. What is the most appropriate technician action?
Disequilibrium syndrome is most likely to occur in which patient population?
2.3 Dialysate Composition, Acid-Base Balance, and Electrolyte Dynamics
While monitoring vital signs, the technician notices the patient's heart rate has dropped from 78 to 42 bpm with no symptoms reported. What is the best action?
Buttonhole cannulation requires which strict practice to minimize infection risk?
The first action when an air-detector alarm sounds with confirmed air in the venous line is to:
During the pre-dialysis access exam, the technician notes a pulsatile rather than continuous thrill in the AV fistula. What does this most likely indicate?
2.4 Mineral and Bone Disorder (MBD), Anemia Management, and Endocrine Functions
Which intervention is most appropriate for a patient developing intradialytic hypotension with a heart rate that is paradoxically low (50-55 bpm)?
Which post-dialysis finding most strongly suggests that the prescribed ultrafiltration was too aggressive?
A patient with chronic atrial fibrillation on warfarin reports a sudden severe headache and one-sided weakness 2 hours into hemodialysis. The next correct sequence of actions is:
Question · Hard
An AV graft develops a small pulsatile mass at the cannulation site that is increasing in size between treatments. The skin overlying it is thinning. The most appropriate action is:
Chapter 3: Fluid Dynamics, Volume Assessment, and Kinetic Modeling
3.1 Estimated Dry Weight (EDW), Volume Overload, and Clinical Fluid Assessment
A patient receiving dialysis through a central venous catheter suddenly develops dyspnea and hypotension. Auscultation reveals decreased breath sounds on the right with tracheal deviation to the left. The technician should suspect:
When cannulating a new AV fistula deemed mature by the surgeon, which initial parameters most reduce the risk of fistula injury?
During treatment, the technician notes a steadily climbing venous pressure from 180 to 280 mm Hg over 10 minutes, while arterial pressure becomes more negative. The most likely cause is:
An advanced technician precepting a new hire notices the trainee skipped the pulse and bruit check on a fistula. The best CCHT-A response is:
3.2 Ultrafiltration Rate (UFR) Calculations, Safety Thresholds, and Myocardial Stunning
Which water-treatment component removes free chlorine and chloramines that would otherwise cause hemolysis if they reached the dialysate?
Machine Technology And Water Treatment
Per AAMI/ANSI/ISO 23500-3, what is the maximum allowed total chlorine in product water at the point of use for hemodialysis?
An air detector alarm during dialysis indicates that:
Conductivity in dialysate primarily reflects:
3.3 Urea Kinetic Modeling: Kt/V Targets, URR Calculations, and Adequacy Optimization
What is the primary purpose of the water softener in a dialysis water system?
A high venous pressure alarm during treatment most often signals:
Which best describes a single-pass dialysate delivery system?
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