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40 Cards in this Set

  • Front
  • Back
People with renal insufficiency should avoid which type of drugs?
NSAIDs and COX-2 inhibitors
What is the MOA and toxicity of Nitrofurantoin?
Bactericidal, damages bacterial DNA. It is nephrotoxic, can cause diabetes insipidus
What is the MOA of pentamidine? Toxicity?
treats pneumonia caused by pneumocystis carini. Nephrotoxic
What are the antihyperlipidemics? And what is their MOA
Lovestatin and Gemfibrozil. Lovestatin inhibits HMG CoA reductase. Gemfibrozil upregulates lipoprotein lipase (LPL) synthesis and increases oxidation of fatty acids
What is the nephrotoxic effect of the antihyperlipidemics?
Rhabdomyolysis, muscle injury (myopathy), possible myoglobinuria and renal damage
Which drugs of the ACEIs and ARBs are nephrotoxic? And what is their nephrotoxic effect?
Losartan and Captopril. Hypotension, renal failure, and hyperkalemia
Which of the drugs of the Diuretics are nephrotoxic?
Furosemide, Hydrochlorothiazide, Triamterene, and Mannitol
What is MESNA? What drugs is it used with?
sulfhydryl that inactivates acrolein which is the nephrotoxic metabolite in ifosphamide and cyclophosphamide
What two drugs of the chemotherapy drugs are alkylating agents?
Cisplatin and Mitomycin
What is the MOA of cisplatin?
Chemotherapy. Complexes with DNA forming intrastrand and interstrand crosslinks of guanine.
What is the mechanism of toxicity of cisplatin?
conversion of nephrotoxin in proximal tubules. Results in hypomagnesium, hyokalemia, hypocalcemia, hyponatremia, hypophosphatemia and hyperurecemia
What drug causes severe nephropathy and inhibits dihydrofolate reductase (DHFR)
Methotrexate, chemotherapy drug
What drug can cause microangiopathic hemolytic anemia, and if combined with thrombocytopenia and irreversible renal failure cause Hemolytic Uremic Syndrome?
Mitomycin, a chemotherapy drug
What are the cyclosporines and what is their MOA?
(chemotherapy) Tacrolimus and Immunosuppressine. Block activation of T cells in early stage of differentiation
What is the nephrotoxicity of the Cyclosporines (tacrolimus FK-506 and immunosuppressine)
Hemodynamic factors- vasoconstriction via the sympathetic system. Results in renal ischemia
What is the MOA of ifosphamide and cyclophosphamide?
DNA intrastrand and interstrand cross link at N7 of guanine
What is the nephrotoxicity of ifosphamide and cyclophosphamide?
Hemorrhagic cyctitis and hematuria, Acute tubular necrosis and Fanconi Syndrome- require MESNA
How can nephrotocity be avoided when using cisplatin?
adequate hydration and dilute drug in saline
How can nephrotoxicity be avoided in methotrexate
if patient is receiving a high dose, give large volume parenterals (LVP) of Na Bicarbonate in to increase elimination
How can nephrotoxicity be avoided when using mitomycin?
plasma exchange corrects the hemolytic anemia
In what class of people would NSAIDs and COX-2 inhibitors cause renal failure and how?
Compromised patients (CHF, cirrhosis, nephrosis). These patients already have overexpressed COX-2 so NSAIDs and COX-2Is block compensatory vasodilation so maintanence of Renal Blood Flow and GFR are lost => acute renal failure
Which hormones increase GFR
NO and prostoglandins
What hormones decrease GFR
Norepi, Epi, endothelin
What is the nephrotoxity of lithium?
Nephrogenic Diabetes Insipidus, from the downregulation of V2, a vasopressin regulated channel on the apical membrane of the collecting duct
which drug can be used to avoid Diabetes insipidus in the use of lithium?
Desmopressin
What is the nephrotoxicity of laxatives, how can you avoid?
diffuse tubular injury and abundant deposits of Ca phosphate in Distal and collecting ducts. Causes volume depletion and hypokalemia. Treatment: hydration
What is the mechanism of toxicity of contrast nephropathy?
causes acute tubular necrosis by direct vasoconstriction by contrast agent and generation of free radicals toxic to glomeruli and tubules
How can contrast nephropathy toxicity be avoided?
Low dose and isomola, avoid NSAIDs. Drug options: anti-diabetic Metformin, acetylcysteine, large volume parenteral of Na bicarb
Nitroglycerin (class and other drugs)
Nitrates w/ Amyl nitrate, isosorbide dinitrate, isosorbide mononitrate
Sildenafil (class and other drugs)
5-phosphodiesterase inhibitors w/ Tadalafil, Vardenafil
What is the MOA of the 5-PDEI?
increase concentration of cGMP by blocking the degradation of 5-PDE, which line the smooth muscle cells of the blood vessels in the corpus cavernosum
What class of drugs should be avoided when using 5-PDEIs?
Nitrates
What is the MOA of nitroglycerin?
NO activates cGMP to cause dephos of myosin light chain to stop smooth muscle contraction => vasodilates, ateriodilates, and relaxes other smooth muscle
What anginas can nitrates be used for?
Typical and Atypical
Which of the nitrates are oral? Inhaled?
isosorbide mononitrate and dinatrate (sublingual too), nitroglycerin (subling). Inhaled- amyl nitrate
What is the toxicity of nitrates?
hypotension, fainting, pulsing headache
What are the short-acting nitrates
nitroglycerin, isosorbide dinitrate, amyl nitrate
What are the long acting nitrates
nitroglycerin, isosorbide dinitrate, isosorbide mononitrate
What drugs potentiate the natural NO mechanism
5-PDE
What is the drug toxicity when using a nitrate and a 5-PDEI?
Severe hypotension, reflexive tachycardia, V. contractility, cardiac ischemia, anginal pain, MI