Exam 2: CKD And Nephrotic Syndrome Flashcards
What defines CKD?
Decreased kidney function or kidney damage for 3 months or more
What is the hallmark of progressive kidney disease?
Declining GFR
What are the leading causes of kidney failure?
DM and HTN
What is uremic syndrome?
Accumulation of metabolic waste products or uremic toxins
What is uremic syndrome often seen with?
A profound decrease in GFR (10-15)
Patient presents with fatigue, malaise, pericarditis, encephalitis, and a GFR of 15. What are you converted about?
Uremic syndrome
What finding on renal US supports diagnoses of CKD?
Small kidneys bilaterally (<9-10cm)
What defines the kidney function/damage seen with CKD?
Kidney function: GFR <60
Kidney damage: Albuminuria (urine albumin to creatinine ratio >30), abnormal imaging, abnormal urinary sediment, and hx of kidney transplant
What is CKD stage 1?
GFR >90, kidney damage with normal or increased GFR
What is CKD stage 2?
GFR 60-89, kidney damage with mildly decreased GFR
What is CKD stage 3a?
GFR 45-59, mildly-moderately decreased GFR
What is CKD stage 3b?
GFR 30-44, moderately-severely decreased GFR
What is CKD stage 4?
GFR 15-29, severely decreased GFR
What is CKD stage 5?
GFR <15, kidney failure
** add D if treated with Dialysis
What is albuminuria stage 1?
ACR (albumin to creatinine ratio) < 30, normal to mildly increased
What is albuminuria stage 2?
ACR 30-300, moderately increased
What is albuminuria stage 3?
ACR >300, severely increased
What is the pathogenesis of CKD?
Progressive decline of GFR, typically over months to years, due to the irreversible destruction of nephrons independent of the cause
What does destruction of nephrons often lead to?
Compensatory hypertrophy and supranormal GFR of the remaining nephrons.
-This leads to overwork injury and progressive glomerular sclerosis and interstitial fibrosis
What labs should you order for patients who are at high risk of developing CKD?
- ACR
- Serum creatinine to estimate GFR
What are some of the complications that may arise from CKD?
- CVD
- HTN
- Dyslipidemia
- anemia
- Mineral and bone disorders
- fluid and electrolyte abnormalities
- uremia
What are the bone disorders that can occur as a complication from CKD?
Osteitis fibrosa cystica, adynamic bone disease, and osteomalacia
What is the typical pattern seen on labs in patients who are developing bone disorders secondary to CKD?
-Hyperphosphatemia, hypocalcemia, decreased vitamin D. This is called secondary hyperparathyroidism!!
What are the reversible factors that cause CKD?
- Infection
- UTI
- Decreased renal perfusion
- nephrotoxic agents
- HF
What is the vital treatment measure in regards to CKD?
Treatment of underlying disease
Why are ACE inhibitors and ARBs used for CKD?
- renal protective
- helpful in slowing the progression of proteinuric CKD (decreases albumin)
What is the target BP in CKD patients without proteinuria?
< 140/90
What is the target BP in CKD patients with Proteinuric CKD?
< 130/80
What it is the one indication that is common to most guidelines about when to refer to patient for CKD?
GFR < 30
Who is dialysis reserved for?
Patients with kidney failure/ESRD.
What are the acute complications of hemodialysis?
-Hypotension, cramps, nausea/vomiting, HA, CP, back pain, itching, fever, and chills
How does hemodialysis work?
- Requires a constant flow of blood along one side of a semipermeable membrane with a cleaning solution (or a dialysate) along the other.
- Diffusion and convection allow the dialysate to remove unwanted substances from the blood while adding back needed components