DAVITA RN FINAL EXAM 2026–2027
Enhanced Dialysis Nursing Study Guide
Hemodialysis • Vascular Access • Assessment • Complications • Safety
The referenced Stuvia listing is a 33-page commercial document, written for 2025/2026 and uploaded March 20, 2026. Its public
preview focuses heavily on hemodialysis principles, URR/Kt/V, dialysate, water treatment, dialyzers, and acute dialysis reactions.
This guide uses only that public preview as a topic signal and creates original educational content; it does not reproduce paid or
purported “actual exam” questions.
Clinical safety note: This is an exam-preparation resource, not a substitute for DaVita policy, nephrology orders, facility protocols,
or current professional guidance.
DaVita RN 2026–2027 Enhanced Study Guide • Page 1
, 1. HEMODIALYSIS CORE PRINCIPLES
Hemodialysis removes solutes and fluid from blood through a semipermeable membrane. The public preview emphasizes diffusion,
ultrafiltration, transmembrane pressure, dialysate composition, water treatment, dialyzer flux, and adequacy calculations.
■cite■turn0view0■
Mechanism What moves? Driving force / concept
Diffusion Solutes Concentration gradient
Ultrafiltration Water Pressure gradient / transmembrane pressure
Convection Solutes carried with water Solvent drag during ultrafiltration
Osmosis Water Osmotic gradient
Diffusion
For small solutes such as urea, diffusion is the key removal mechanism: solute moves across the semipermeable membrane down
its concentration gradient. Dialysate composition and flow help maintain the gradient.
Ultrafiltration
Fluid removal depends on pressure across the membrane. Transmembrane pressure (TMP) is therefore central to ultrafiltration.
Too much fluid removal relative to vascular refilling can contribute to intradialytic hypotension.
Convection
Convection removes solute as water crosses the membrane, carrying dissolved substances with it. Think “solvent drag.”
Memory hook: Diffusion = solute gradient; UF = pressure; convection = solute rides with water.
DaVita RN 2026–2027 Enhanced Study Guide • Page 2
Enhanced Dialysis Nursing Study Guide
Hemodialysis • Vascular Access • Assessment • Complications • Safety
The referenced Stuvia listing is a 33-page commercial document, written for 2025/2026 and uploaded March 20, 2026. Its public
preview focuses heavily on hemodialysis principles, URR/Kt/V, dialysate, water treatment, dialyzers, and acute dialysis reactions.
This guide uses only that public preview as a topic signal and creates original educational content; it does not reproduce paid or
purported “actual exam” questions.
Clinical safety note: This is an exam-preparation resource, not a substitute for DaVita policy, nephrology orders, facility protocols,
or current professional guidance.
DaVita RN 2026–2027 Enhanced Study Guide • Page 1
, 1. HEMODIALYSIS CORE PRINCIPLES
Hemodialysis removes solutes and fluid from blood through a semipermeable membrane. The public preview emphasizes diffusion,
ultrafiltration, transmembrane pressure, dialysate composition, water treatment, dialyzer flux, and adequacy calculations.
■cite■turn0view0■
Mechanism What moves? Driving force / concept
Diffusion Solutes Concentration gradient
Ultrafiltration Water Pressure gradient / transmembrane pressure
Convection Solutes carried with water Solvent drag during ultrafiltration
Osmosis Water Osmotic gradient
Diffusion
For small solutes such as urea, diffusion is the key removal mechanism: solute moves across the semipermeable membrane down
its concentration gradient. Dialysate composition and flow help maintain the gradient.
Ultrafiltration
Fluid removal depends on pressure across the membrane. Transmembrane pressure (TMP) is therefore central to ultrafiltration.
Too much fluid removal relative to vascular refilling can contribute to intradialytic hypotension.
Convection
Convection removes solute as water crosses the membrane, carrying dissolved substances with it. Think “solvent drag.”
Memory hook: Diffusion = solute gradient; UF = pressure; convection = solute rides with water.
DaVita RN 2026–2027 Enhanced Study Guide • Page 2
