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Drugs For Right & Left Sided Heart Failure n Cardiac Glycosides n Angiotensin-Converting Enzyme Inhibitors (ACE Inhibitors) n Diuretics.

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Presentation on theme: "Drugs For Right & Left Sided Heart Failure n Cardiac Glycosides n Angiotensin-Converting Enzyme Inhibitors (ACE Inhibitors) n Diuretics."— Presentation transcript:

1 Drugs For Right & Left Sided Heart Failure n Cardiac Glycosides n Angiotensin-Converting Enzyme Inhibitors (ACE Inhibitors) n Diuretics

2 Cardiac Glycosides n Digitoxin (Crystodigin) n Digoxin (Lanoxin)

3 Cardiac Glycosides : Mechanism Of Action Inhibits Na+-K+ ATPase And Impairs The Active Transport Of Sodium & Potassium - Intracellular Sodium Concentrations Rise Inhibits Na+-K+ ATPase And Impairs The Active Transport Of Sodium & Potassium - Intracellular Sodium Concentrations Rise

4 n High Intracellular Na+ Deranges The Na+-Ca2+ Pump Which Allows Intracellular Ca2+ Concentrations To Rise

5 n Calcium Channels May Open Up And Allow Extracellular Calcium To Flow Into The Cell n The Heart Will Beat More Forcibly And With Greater Velocity

6 n Glycosides Enhance Vagal Tone Over The Heart l Slows The Heart Rate l Slows The AV Node Conduction Velocity & Increases The AV Nodal Refractory Period

7 Glycosides Net Effect On The Heart n Heart Rate Is Slowed n Cardiac Contraction Is Greater n Ejection Fraction Is Improved n Increased Ejection Velocity n The Heart Is A Better Pump

8 Adverse Side Effects Of The Cardiac Glycosides n Fatigue n Delirium n Anorexia n Headaches

9 n Hallucinations n Visual Disturbances n Atrioventricular Blocks

10 EKG Changes Associated With The Cardiac Glycosides n Prolonged P-R Interval n Inversion Of T-Wave n S-T Segment Depression

11 Glycosides - Medical Uses n Atrial Flutter n Atrial Fibrillation n Paroxysmal Tachycardia n Congestive Heart Failure

12 Angiotensin Converting Enzyme Inhibitors l Captopril (Capoten) l Enalapril Maleate (Vasotec) l Lisinopril (Prinivil, Zestril) l Benazepril (Lotensin) l Fosinopril (Monopril)

13 l Moexipril (Univasc) l Quinapril (Accupril) l Ramipril (Altace) l Trandolapril (Mavik)

14 CHF - How Does It Occur ? n The Heart As A Pump Is Weakened 3 Myocardial Infarction 3 Ischemic Heart Disease 3 Valve Dysfunction & Disease 3 Hypertension --> To Hypertrophy 3 Idiopathic Cardiomyopathy

15 n The Failing Heart Causes : 3 Low Blood Flow Systemically 3 Aldosterone Is Released 3 Renin Is Released

16 3 Increased Sodium And Water Retention 3 Increased Cardiac Workload 3 Decreased Cardiac Pump Performance

17 ACE Inhibitors Mechanism Of Action n Blocks Converting Enzyme From Changing Angiotensin I to Angiotensin II n Prevents A Rise In Peripheral Resistance (Vasoconstriction)

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20 l Reduces Afterload On The Heart l Reduces Work Of The Heart

21 ACE Inhibitors Adverse Side Effects n GI Distress n Dizziness n Skin Rashes n Hypotension

22 ACE Inhibitors - Medical Uses l Hypertension l Congestive Heart Failure l Diabetic Nephropathy

23 Diuretics n High Ceiling Loop Diuretics n Benzothiadiazide Diuretics n Potassium Sparing Diuretics n Mannitol - Osmotic Diuretic

24 High Ceiling Loop Diuretics n Furosemide (Lasix) n Ethacrynic Acid (Edecrin) n Bumetanide (Bumex) n Torsemide (Demadex)

25 High Ceiling Loop Diuretics Mechanism Of Action l Loop Diuretics Exert Their Effect At The Proximal Tubule And Ascending Loop l Blocks The Re-Absorption of Sodium, Potassium & Chloride Ions

26 l Loss Of These Ions In The Glomerular Filtrate Is Followed By Quantities Of Water

27 High Ceiling Loop Diuretics Adverse Side Effects l Electrolyte Imbalances l Hypokalemia *** l Hyponatremia l Hypocalcemia l Hypomagnesemia

28 n Urinary Loss Of Blood Ions l Natriuresis l Kaliuresis n Orthostatic Hypotension n Dehydration

29 Potassium Rich Foods n Dates n Bananas n Raisins n Apricots n Tomatoes

30 n Oranges n Potatoes n Lima Beans n Carrots

31 n Veal n Chicken n Turkey n Liver n Beef n Milk

32 n Peanuts n Sardines n Halibut

33 High Ceiling Loop Diuretics Medical Uses l Congestive Heart Failure l Severe Pneumonia l Prevent Acute Renal Failure l Control Of Hypertension l Control Of General Edema l Control Of Acute Pulmonary Edema

34 Benzothiadiazides l Hydrochlorothiazide (Hydrodiuril) l Chlorothiazide (Diuril) l Clorthalidone (Hygroton) l Benzthiazide (Aquapres) l Bendroflumethiazide (Naturetin)

35 l Methyclothiazide (Aquatensen) l Polythiazide (Renese) l Indapamide (Lozol) l Hydroflumethiazide (Diucardin) l Metalozone (Zaroxolyn) l Quinethazone (Hydromax) l Trichlormethiazide (Diurese)

36 Thiazides - Mechanism Of Action l Act In The Distal Tubule l Inhibit Reabsorption Of Sodium And Potassium l Stimulate The Reabsorption Of Calcium l Loss Of Water As Urine

37 Thiazides : Adverse Side Effects l Loss Of Blood Ions l Hypokalemia l Hyponatremia l Hypomagnesemia l Loss Of Iodine

38 n Loss Of Blood Ions In The Urine l Kaliuresis l Natriuresis l Chloruresis

39 Thiazides : Adverse Side Effects n Hyperuricemia (Gout) n Weakness & Fatigue n Hypercholesterolemia n Hypertriglyceridemia n Hyperglycemia (Insulin Suppression)

40 Thiazides - Medical Uses l Control Hypertension l Congestive Heart Failure l Control Edema Due To : l Hepatic Disease l Renal Disease l Corticosteroid Therapy l Estrogen Therapy

41 Potassium Sparing Diuretics l Spironolactone (Aldactone) l Triamterene (Dyrenium) l Amiloride (Midamor)

42 Spironolactone - Mechanism Of Action n Competitively Binds The Aldosterone Receptor Preventing The Hormone From Binding To Its Receptor n Aldosterone's Normal Steroid- Nuclear DNA Transcription Is Halted

43 Spironolactone Mechanism Of Action l Excretion Of : l Sodium l Chloride l Water l Retention of Potassium

44 Spironolactone Adverse Side Effects l Diarrhea l Drowsiness l Lethargy

45 l Headaches l Impotence l Mental Confusion

46 Spironolactone Adverse Side Effects l Hyponatremia l Hyperkalemia l Gynecomastia l Irregular Menses

47 l Amenorrhea l Hirsuitism l Deepening Of The Voice

48 Spironolactone - Medical Uses l Heart Failure l Primary Hyperaldosteronism l Cirrhosis Of The Liver l Essential Hypertension l Nephrotic Syndrome

49 Spironolactone - Medical Uses l Primary Aldosteronism (Conn's Disease) l Aldosterone Secreting Adrenal Cortical Tumor

50 l Severely Depleted Blood Potassium Levels l Hypertensive Due To Water Retention l Muscle Weakness

51 Spironolactone - Medical Uses n Hypokalemia n Essential Hypertension n Congestive Heart Failure n Cirrhosis Of The Liver & Ascites

52 Spironolactone Adverse Side Effects n Excessive Loss Of Water n Mild Metabolic Acidosis n Higher Incidence Of Breast Cancer n Sore Breasts And Nipples

53 Triamterene And Amiloride Mechanism Of Action l Inhibit The Reabsorption Of Sodium In The Distal Tubule And Collecting Ducts By Disrupting The Aldosterone-Dependent Na+-K+ Pump

54 l Potassium Is Spared Because Sodium Is Wasted - A Reciprocal Relationship

55 Triamterene And Amiloride Adverse Side Effects n Hyponatremia n Hyperkalemia n Hypotension

56 n Nausea n Vomiting n Acidosis n Elevated BUN

57 Triamterene And Amiloride Medical Uses n Congestive Heart Failure n Cirrhosis Of The Liver n Hypertension

58 Osmotic Diuretics n Mannitol (Osmitrol)

59 Mannitol - A Perfect Diuretic n An Osmotic Diuretic Should Have The Following Qualities : l Freely Filterable At The Glomerulus l Undergo Limited Or No Reabsorption By The Renal Tubule

60 l Pharmacologically Inert l Resists Metabolic Alteration

61 Mannitol - Mechanism Of Action n Mannitol Exerts An Osmotic Draw For Water, Sodium, And Potassium

62 Mannitol - Adverse Side Effects n Transient Fluid Overload n Pulmonary Edema n Tachycardia n Mental Detachment

63 n Blurred Vision n Headache n Confusion

64 Mannitol - Medical Uses n Acute Renal Failure n Reduction Of Cranial Pressure n Stimulate Diuresis In Drug Intoxications n Reduction Of Intraocular Pressure

65 Clinical Considerations n The diuretics may increase blood glucose in diabetic patients. This causes hyperglycemia secondary to suppression of insulin release in Type II diabetics.

66 Clinical Considerations n Watch the patient for dehydration and electrolyte imbalance.

67 Clinical Considerations n Ototoxicity leading to loss of hearing, loss of balance, and vertigo.

68 Clinical Considerations n Hypotension & syncopal episodes


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