Renal disease Flashcards
Most common causes of renal disease
Diabetes and HTN
Primary function of the nephron
Control the concentration of Na and water.
This regulates blood volume and BP
Protein bound drugs
Not filtered through the glomerulus, exit through the efferent arteriole. Albumin only passes through the urine if the kidney is damaged.
Medications that work in the proximal tubule
SGLT2 inhibitors
Medications that work in the DCT
Thiazides
Medications that work in the ascending loop of henle
Loop diuretics
Medications that work in the collecting duct
Potassium sparing diuretics- aldosterone antagonists (spironolactone, eplerenone
Select drugs that cause kidney disease
All Needy Cats Like Vinci Cry And Create Pee Tubs
Aminoglycosides
NSAIDs
Cisplatin
Loop diuretics
Vancomycin
Cyclosporine
Amphotericin B
Contrast
Polymyxins
Tacrolimus
The cockcroft gault eqn is not preferable in
the very young, kidney failure, unstable renal function
CKD=
GFR <60 and/OR albuminuria
Why are ACEi and ARBs recommended for albuminuria?
Prevents disease progression by causing efferent vasodialtion
When starting an ACE or an ARB
SCr can increase by up to 30%. This is expected and treatment should not be stopped.
Recommendations for patients with CKD, DM, and eGFR >30
SGLT2 inhibitor- shown to reduce CV and CKD progression
Metformin
Drugs CI when CrCl<60
Nitrofurantoin
Drugs CI when CrCl <50
TDF containing products
Voriconazole IV (d/t vehicle)
Drugs CI when CrCl <30
TAF products
NSAIDs
Dabigatran
Rivaroxaban
Drugs CI when GFR <30
SGLT2 inhibitors
Metformin
Key drugs that require renal dose adjustments
Aminoglycosides
Beta lactams
Fluconazole
Quinolones (except moxi)
Vancomycin
LWMH
Rivaroxaban, Apixaban, Dabigatran
H2RAs, Metoclopramide
Bisphosphonates
Lithium
Complications of CKD
Mineral and bone disorder- hyperphosphatemia, vitamin D deficiency and secondary hyperparathyroidism
Anemia
Hyperkalemia
Patients with advanced CKD require monitoring of
PTH, phos, Ca, vitamin D
Hyperphosphatemia treatment
Restrict dietary phos
Phosphate binders prior to each meal- Calcium acetate and calcium carbonate are first line
Types of phosphate binders
Aluminum based- aluminum hydroxide
Calcium based- Calcium acetate, calcium carbonate
Al free, ca free-sucroferric oxyhydroxide, ferric citrate, lanthanum carbonate
Sevelamer- non aluminum, non calcium, not systemically abs
Aluminum hydroxide
Aluminum based phosphate binder
Caution for dialysis dementia and aluminum toxicity
Calcium based phosphate binders can cause
Hypercalcemia, especially problematic with concomitant use of vitamin D (d/t increased ca abs)
Lanthanum carbonate
Aluminum free, Ca free phosphate binder
Must chew thoroughly to reduce severe GI AE
Renvela
Sevelamer carbonate
Non Aluminum, Non calcium, not systemically abs phos binder
Can lower total cholesterol and LDL.
Renagel
Sevelamer hydrochloride
Non Aluminum, Non calcium, not systemically abs phos binder
Can lower total cholesterol and LDL.
Calcium based phosphate binders interact with
quinolones, tetracyclines, oral bisphosphonates, thyroid products
After controlling hyperphosphatemia, elevations in PTH are treated with
Vitamin D
Why does vitamin D deficiency occur in kidney disease?
Kidney is unable to hydroxylate vitamin D to its active form, 1,25-dihydroxy vitamin D
Vitamin D3
Cholecalciferol- from the skin
Vitamin D2
Ergocalciferol- from plants
Why are vitamin D analogs used in CKD?
Increase Ca absorption
Inhibit PTH
What is the active form of D3?
Calcitriol
Drugs for the treatment of secondary hyperparathyroidism
Vitamin D analogs
Calcimimetic
Vitamin D analogs agents and AE
Calcitriol, calcifediol
-Hypercalcemia
Calcimimetics MOA
Increase sensitivity of calcium receptor on parathyroid gland.
Causes decreased PTH, decreased Ca, decreased phosphate
Sensipar
Cinacalcet
Calcimimetic- causes HYPOcalcemia
Risks of ESAs
Elevated BP
Thrombosis
When should ESAs be used?
When Hgb <10
D/C once Hgb exceed 11
Key drugs that raise K levels
ACEi
ARAs
Aliskiren
ARBs
Canagliflozin
Drospirenone
K containing fluids
SMX/TMP
Cyclosporine, tacrolimus
S/S of hyperkalemia
Muscle weakness, bradycardia, fatal arrhythmias
What is used to stabilize the heart in hyperkalemia?
Calcium gluconate
What pushes K intracellularly?
Dextrose + insulin
Sodium bicarb
Albuterol
What removes K from the body?
Furosemide
Sodium polystyrene sulfonate
Patiromer
Sodium zirconium cyclosilicate
Hemodialysis
Which potassium binder is the quickest?
Sodium zirconium cyclosilicilate
1 hr
Kayexalate
SPS
Warning for GI necrosis
______molecules are more readily removed by dialysis
Smaller
Drugs with a _______Vd are less likely to be removed by dialysis
larger
_______protein bound drugs are less likely to be removed by dialysis
Highly
_______________HD filters remove more substances
High-flux (large pore size) and high-efficiency (large SA)
________dialysis blood flow rate increase drug removal
higher
Preferred HCV treatment regimens consist of
2-3 DAAs with different mechanisms for 8-12 weeks
NS3/4A Protease Inhibitors
-Previr
P for PI
Must be taken with food
Examples- glecaprevir, grazoprevir
NS5A replication complex inhibitors
-Asvir
A for NS5A
Examples- Elbasvir, ledipasvir
NS5B polymerase inhibitors
-Buvir
B for NS5B
-Dasabuvir, sofosbuvir
BBW for all DAAs
Risk of reactivating HBV
Must be tested for HBV before starting a DAA
Sofosbuvir containing DAAs
Do NOT USE Amiodarone
Serious symptomatic bradycardia has been reported
Which DAAs are pan-genotypic
Epclusa and Mavyret
Mavyret
DAA for HCV
Glecaprevir/Pibrentasvir for 8 weeks WF
Epclusa
DAA for HCV
Sofosbuvir/velpatasvie for 12 weeks
DO NOT use amiodarone
Dispense in original container
DDI for all DAAs
Strong inducers of 3A4
PORCS PR
Phenobarbital
Oxcabazepine
Rifampin
Carbamazepine
St. Johns Wort
Phenytoin
Rifabutin
Harvoni, Epclusa, and Vosevi interact with
antacids, H2RAs, and PPIs
Decrease conc of ledipasvir and velpatasvir
Do not take _______with Epclusa
PPIs
Viekira Pak DDI
Ethinyl estradiol
When is ribavirin used in HCV?
in combo with other drugs. NOT MONO
Aerosolized ribavirin is used for
RSV
Ribavirin BBW
Teratogenic
Hemolytic anemia
Interferon alfa BBW
Neuropsychiatric, autoimmune, ischemic, or infections disorders
Treatment of HBV
Interferon alfa preferred
NRTIs- TDF, TAF, entecavir, and lamivudine can be used
BBW for NRTIs
hepatomegaly and lactic acidosis
Exacerbations of HBV if d/c’d
Viread
TDF
Vemlidy
TAF
Baraclude
Entecavir
Natural products for cirrhosis
Milk thistle
Drugs with BBW for liver damage
APAP
Amiodarone
Isoniazid
Ketoconazole oral
MTX
Nefazodone
Nevirapine
NRTIs
PTU
Valproic acid