Week 3 Renal Dysfunction Flashcards
BP Regulation Hormones
- Renin
- Angiotensin
- Aldosterone
Strong Bone Construction
- Convert vit D from active form
- Increases Calcium levels in bone
Waste Excretion
- Protein metabolites
- Nitrogen & urea
- Water-soluble medication metabolites
Salt & Water Balance
- Respond to ADH & aldosterone
- Affect water reabsorption
- Maintain healthy plasma levels of salt
RBC Production Boost
- Produce erythropoietin
- Stimulates bone marrow to manufacture RBCs
Low Aldosterone
- Decrease Na+ retention
- Decrease fluid volume
- Decrease BP
- Increase urine output (diuresis)
High Aldosterone
- Increase Na+ retention
- Increase fluid volume
- Increase BP
- Decrease urine output
High ADH
- Increase fluid volume
- Increase BP
- Decrease urine output
Low ADH
- Decrease fluid volume
- Decrease BP
- Increase urine output (diuresis)
Renal Nursing Assessments
- Health & family history
- Medication history
- Physical exam
- Labs & investigations
Health & Family History
- Comorbidities that increase kidney damage risk
- Diabetes
- Neuromuscular
- Conditions affecting bladder emptying
- Family history of kidney disease
- Age (increased age = increased kidney damage risk)
Medication History
- Identify nephrotoxic meds
- NSAIDs
- Antibiotics (vancomycin)
- Loop diuretics (Furosemide)
- Contrast dyes (MRI)
- Metformin
Physical Exam
- Urinary output
- Pain - mid/lower back, lower groin
- Signs of waste build-up
Signs of Waste Build-Up - GI
- Nausea, vomit, diarrhea
- Abdominal discomfort/distension
- Ulceration - bleeding
Signs of Waste Build-Up - Integumentary
- Itching/skin irritation
- Azotemia
Signs of Waste Build-Up - Neuro
- Interrupts normal neruo function
- Early: lethargy, forgetfulness, mild confusion
- Late: seizures, coma
Micturition
- Voiding
- 30mL/h - 1-2L/day
Anurea
No urine output
Oligurea
Low urine output
Polyurea
Excessive urine output
Heamturea
Blood in urine
Proteinurea
Protein in urine
eGFR
- Difficult to measure
- 120-130mL/min/1.73m2
- 24 hour urine collection + blood draw
- Decreased value indicates poor function
GFR
- 90 mL/min
- Decreased value indicates poor function
Creatinine Levels
- M 49-93micromol/L
- F 22-75 micromol/L
- Elevated levels indicate poor function
BUN
- 2.1-8.0mmol/L
- Elevated levels indicate poor function
Hemoglobin
- Decrease production with kidney dysfunction
- 120-160g/L
- Decreased values, poor function
Electrolyte Dysfunction
- Abnormal filtration, secretion, retention
ABGs Dysfunction
- Decreased ability to filter & excrete H
HCO3
- Likely decreased to reflect renal involvement
Potassium Elevation
- Due to retention
- Acidosis
Bone Health Dysfunction
Vit D levels decrease, calcium decreases
Acute Kidney Injury (AKI)
- Sudden loss of renal function
- Fluid, electrolyte, pH balances
- Waste buildup
- Metabolic acidosis
- Impacting renal function <3 months
Nurse Role in AKI
- Monitor function & act when identifying concerns
- Know drugs - risk of nephrotoxicity
- Follow transfusion protocol - reactions can cause AKI
- Prevent hypoperfusion - adequate hydration, treat hypotension promptly
- Prevent infections - catheter care
AKI Phases
- Initiation - initial loss of function
- Oliguria - reduction in urine output
- Increased Creatinine, BUN, K (hyperkalemia)
- Diuresis - tissues return to function, normalized output
- Recovery - labs normalize >3 months
AKI Nurse Interventions
- Monitor fluid/electrolyte balance
- Promote pulmonary function
- Infection prevention
- Psychosocial support
AKI Goals of Care
- Treat underlying cause of AKI
- Dialysis to remove toxins/fluids
- Diuretic medications
Continuous Renal Replacement Therapy
- Machine that mimics kidney function
- Filters blood to provide kidney rest/healing
- Filters extracellular fluid
- Removes H2O, solutes through hemofilter
- Clears urinary toxins
Chronic Kidney Disease Stages
- GFR>90 - damage but normal
- GFR 60-89 - mild decrease
- GFR 30-59 - moderate decrease
- GFR 15-29 - severe decrease
- GFR<15 - end stage
CKD Patient Education
- Control blood sugars
- Control blood pressure
- Diet - restrict fluid, sodium, low protein, high carb
- Smoking cessation
- Alcohol intake
- Weight reduction
- Exercise
- Avoid nephrotoxic meds (NSAIDs over the counter)
CKD Pharm Interventions
Delay Progression
ACE Inhibitors
- PRILs, Rami-, Perindo, Lisino-
- Antihypertensive
- Dry cough, drowsiness, dizziness, headache
- Monitor for hypotension
ARBs
- SARTANs: Cande-, Lo-, Val-
- N/V/D, Dizziness, headache
- Monitor for hypotension
- Appropriate for clients who cannot tolerate ACE inhibitors
Biquandies
- Metformin
- Antihyperglycemic
- Stomach pain, GI upset, gas/bloating, N/V/D, constipation
- Risk of hypoglycemia - monitor
- Potentially hepatotoxic drug (ALT & AST)
- Contraindicated in eGFR <30
HMG-CoA Reductase Inhibitor
- STATINs: atrova-, rosuva- simvas-
- Antihyperlipidemia
- Treat dyslypidemia
- Muscle pain, GI upset, insomnia, dizziness, headaches
- Lipid labs require fasting - eat nothing after 2000 for morning labs
- HDLs (good) LDLs (bad)
- Hepatotoxic drug (ALT & AST)
Dialysis
- Intermittent treatment to provide extracellular fluid filtration
- Required when kidney function drops below baseline
- Maintain fluid electrolyte balance
Dialysis Goal
- Remove fluid volume excess
- Filter electrolytes
Dialysis Assessment
- Vital signs (BP, HR, RR - fluid status) (temp - infection)
- Fluid balance - weight
- Labs (adjust dialysis settings based on electrolytes, add/remove as needed
**Pre vs post assessment, compare to identify improvement
Peritoneal Dialysis
- Filter via passive filtration through peritoneal cavity
- Fill with hypertonic solution, water moves into peritoneal cavity via osmosis, cavity drained
- Gravity or continuous cyclic
Peritoneal Dialysis - Nursing Actions
- Warm up solution before administration
- Infection prevention
- Monitor for peritonitis - febrile, cloudy drainage, tachycardia
Hemodialysis
- External filtration of intravascular fluid
- Attach dialysis machine via fistula
Fistula Care & Assessment
- Avoid BP on arm
- Neurovascular assessment
- Do not use for other purposes or touch
Kidney Transplant
- Healthy kidney replaces
- Most effective treatment for stage 5
- Immunosuppressants for life