Diuretic, ACE Inhibitors and Angiotensin II receptor blockers (Week 3) Flashcards
Commonly used anticoagulants
- Warfarin
- Heparin (Unfractionated
- Low molecular weight heparins (Tinzaparin, Enoxaparin, Dalteparin)
- Apixaban
Classifications of Diuretic Drugs
- Carbonic anhydrase inhibitors
- Loop Diuretics
- Osmotic Diuretics
- Potassium-sparing diuretics
- Thiazide and Thiazide-like diuretics
Action of Loop Diuretics
Act primarily on the thick ascending limb of the loop of Henle, blocking chloride and sodium resorption…..
Movement of Loop Diuretics
Absorption:
Distribution:
Metabolism: Kidneys
Excretion: Urine
Common Adverse Effects of Loop Diuretics
CNS: Dizziness, headache, tinnitus, blurred vision
GI: Nausea, vomiting, diarrhea
Hemat: Agranulocytosis, thrombocytopenia, neutropenia
Metabolic: hypokalemia, hyperglycemia, hyperuricemia, hyponatremia, hypochloremia, hypocalcemia, hypomagnesemia, metabolic alkalosis in severe cases
Indications of Loop Diuretics
Manage edema associated with heart failure and kidney or liver disease, to manage hypertension, and to increase the kidney increase of calcium in patients with hypercalcemia. May also be indicated with heart failure from diastole dysfunction.
Action of Loop Diuretics
Act primarily on the thick ascending limb of the loop of Henle, blocking chloride and sodium resorption…..
Contraindications of Loop Diuretics
- Known drug allergy
- hepatic coma
- severe electrolyte loss
Interactions of Loop Diuretics
Loop diuretics have neurotoxic and nephrotoxic properties and produce additive effects when given in combination with other drugs with similar toxicities.
- Aminoglycosides
- Vancomycin
- Corticosteroids
- Digoxin
- Lithium Carbonate
- NSAIDs
Administration of Loop Diuretics
Dosage varies with drug and age of pt.
Mannitol - IV
Furosemide - IM, IV, PO
Examples of Thiazide Diuretics
- acetazolamide
- methazolamide
Movement of Thiazide Diuretics
Absorption:
Distribution:
Metabolism:
Excretion: Kidneys
Action of Thiazide Diuretics
- Site if action is at the convoluted tubule, where it inhibits the resorption of sodium, potassium, and chloride.
- Results in osmotic water loss.
- Cause direct relaxation of the arterioles, which reduces afterload
Contraindications of Thiazide Diuretics
- Known drug allergy
- Hyponatremia
- Hypokalemia
- Severe Kidney or Liver Dysfunction
- Adrenal Gland insufficiency
- Cirrhosis
Adverse Effects of Thiazide Diuretics
CNS: Dizziness, headache, blurred vision
GI: Anorexia, nausea, vomiting, diarrhea
GU: Erectile dysfunction
Hemat: Jaundice, leukopenia, agranulocytosis
Integumentary: Urticaria, Photosensitivity
Metabolic: Hypokalemia, glycosuria, hyperglycemia, hyperuricemia, hypochloremic alkalosis
Management of OD in Thiazide Diuretics
An overdose can lead to an electrolyte imbalance resulting from hypokalemia. Treatment includes electrolyte replacement.
Symptoms of OD of Thiazide Diuretics
- anorexia
- nausea
- lethargy
- muscle weakness
- mental confusion
- hypotension