Unit
- Kidney anatomy and physiology: The kidneys are paired retroperitoneal organs that filter blood to remove waste products. Each kidney contains about one million nephrons, which regulate fluid, electrolyte, and acid-base balance. They also produce erythropoietin for red blood cell production and activate vitamin D for bone health.
- Renal failure stages: Chronic kidney disease progresses through five stages based on glomerular filtration rate. Stage 5, also called end-stage renal disease, requires renal replacement therapy such as dialysis or transplantation. Early detection and management can slow progression.
- Common causes of renal failure: Diabetes mellitus and hypertension account for the majority of cases. Other causes include glomerulonephritis, polycystic kidney disease, and prolonged obstruction. Support staff should understand these to anticipate patient needs.
- Symptoms of uremia: Accumulation of toxins leads to fatigue, nausea, pruritus, edema, and altered mental status. Dialysis aims to relieve these symptoms by removing waste products. Support staff monitor for changes and report observations.
- Impact on other organ systems: Renal failure affects cardiovascular, hematologic, and skeletal systems. Patients may develop anemia, bone disease, and cardiovascular complications. Knowledge helps staff recognize emergencies and provide holistic care.
- Dialysis as a replacement therapy: Dialysis artificially removes waste and excess fluid. It does not cure renal failure but prolongs life. Support staff assist in treatment delivery and patient comfort.
- Role of the dialysis team: The team includes nephrologists, nurses, technicians, dietitians, and social workers. Support staff work under supervision to prepare equipment and document treatments.
- Ethical and legal considerations: Patients have rights to informed consent, confidentiality, and refusal of treatment. Support staff must respect autonomy and adhere to regulations like HIPAA.
- Types of dialysis: The two main modalities are hemodialysis and peritoneal dialysis. Hemodialysis is typically performed in a center three times weekly, while peritoneal dialysis can be done at home. Each modality requires specific training for staff and patients. Support staff must be familiar with both to provide appropriate assistance and education.
- Vascular access for hemodialysis: A functioning vascular access is essential for hemodialysis. Common types include arteriovenous fistulas, grafts, and central venous catheters. Fistulas have the lowest complication rates and are preferred. Support staff help monitor access sites for signs of infection or dysfunction and assist with proper care and cannulation preparation.
- Infection control in dialysis: Patients on dialysis are at increased risk for infections due to repeated vascular access and immune compromise. Strict hand hygiene, proper disinfection of equipment, and adherence to isolation protocols are critical. Support staff must follow standard precautions and report any breaches or symptoms of infection to nursing staff promptly.
- Nutritional considerations for dialysis patients: Diet plays a key role in managing renal failure. Patients often need to limit phosphorus, potassium, sodium, and fluid intake. Adequate protein is important to prevent malnutrition. Support staff can reinforce dietary guidelines, help monitor meal choices, and report concerns to the dietitian for individualized counseling.
Scope of Practice
Role: Dialysis Support Technician
Within scope:
- Assisting with patient setup and monitoring vital signs during dialysis
- Preparing dialysis machines and circuits under supervision
- Documenting treatment parameters and patient responses
- Communicating observations to nursing staff
Outside scope:
- Interpreting laboratory results for diagnosis
- Prescribing changes to dialysis prescription
- Performing invasive procedures such as cannulation
- Administering medications without authorization
Quick Revision
- Kidneys filter blood, regulate electrolytes, and produce hormones.
- Renal failure leads to accumulation of toxins and fluid imbalance.
- Dialysis replaces some kidney functions.
- Support staff assist with machine preparation and patient monitoring.