Diuretics Flashcards
Hypertension
> 120 systolic /> 80 diastolic
Primary Hypertension
90% of the time, onset ages 25-55, no known cause, insidious onset
Secondary Hypertension
underlying cause known, cause by a medical coniditon
Normal BP
Systolic
Prehypertension
Systolic 120-139 or Diastolic 80-89
Hypertension Stage 1
Systolic 140-159 Diastolic 90-99
Hypertension Stage 2
Systolic >160 Diastolic >100
Risk factors for Hypertension (4 listed)
Family History, Age, Smoking, Hyperlipidemia
Signs and Symptoms of Hypertension
Headache, Nosebleeds, Vertigo, Blurred Vision, Tinnitus,
Treatment for Hypertension
Modify risk factors, Diet, Exercise, Diuretics
drug that increases the volume of urine produced by promoting the excretion of salts and water from the kidneys
Diuretic
Uses of Diuretics
reduces blood pressure, reduces edema due to various conditions such as CHF, pulmonary edema, cerebral edema
Diuretic Assessment
Assess hydration status, know signs and symptoms of fluid volume deficit (hypovolemia, weakness, fatigue, dizziness) and fluid volume overload (hypervolemia, weight gain, swelling, shortness of breath)
These drugs act on the ascending loop of Henle to inhibit sodium and chloride reabsorption. Vasodilation (decreases blood pressure)
Loop Diuretic
Adverse effects of loop diuretics
hypotension, hypokalemia, hyperglycemia, ototoxicity, hypocalcemia, dehydration
Side effects of Diuretics
Hypovolemia weakness, fatigue, dizziness, electrolyte imbalance, acid-base imbalance
Nursing Implications for Diuretics
Don’t give before bedtime, Perform daily weights (same time same scale), Report weight gain, Patients usually take potassium supplement hypokalemia, maintain fluids, don’t double dose
Things to monitor for Diuretics
I & O, weights, BP, serum electrolytes, renal function, edema, adverse effects
inhibit sodium, bicarbonate and chloride re-absorption in the early distal tubule of the nephron, not as potent as loop diuretcs, use with HTN, edema, renal disease, hepatic disease
Thiazide Diuretics
used in conjunction with thiazides, CHF, Edema, do not promote the secretion of potassium in urine
Potassium Sparing Diuretics
synthetic steroid that blocks aldosterone receptors, increases sodium and water excretion while conserving potassium
Aldactone
Nursing for Aldactone
Do not give potassium supplements, avoid prolong sun exposure, adverse effects include hyperkalemia, hyponatremia, food increases absorption, loading dose may be given, delay in onset of action (week for antihypertensive effect)
Thiazide with a potassium sparing agent to help maintain a normal serum potassium
Combination Agent
Monitor Combination Agents
Hyperkalemia and hypopntremia
produces rapid diuresis by increasing the osmotic pressure and increasing urine output (relieving intracranial pressure, etc.)
Osmotic diuretic (example Mannitol)