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Surg 126
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Medications administered to prevent reapsorption of sodium and water
Diuretics
Diurectics are used in management of
hypertension, CHF and glaucoma
Mineral that are dissolved in body fluids
electrolytes
Potassium seriously depleted
hypokalemia
Potassium levels either too high or too low can cause
cardiac dysrhythmias
Long term diuretic therapy is most common in
elderly
Diuretics are used during surgery to
reduce intraocular, and intracranial pressure; or to protect kidney function
The risk of hypokalemia is reduced when diuretics are used for
short term treatment
Diuretica lower BP by
increasing elimination of fluids
decreases blood volume
What may cause the delay or rescheduling of a surgery?
Long term diuretic therapy
What requires the insertion of an indwelling urinary catheter?
Short term intraoperative use of diuretics
The primary funtion of the renal system is to
maintain homeostasis
What is the microscopic filtering unit that removes water and waste solutes?
the nephron
Blood is brought to the nephron through the Afferent arteriole into the
Bowmans capsule;
where filtration occurs
A process of forcing fluids and solutes through the membrane by pressure
filtration
Filtered blood returns to the circulatory system through the
efferent arteriole
What takes place in the proximal convoluted tubule and the Loop of Henle?
tubular reapsorption
What eliminates waste products and controls blood PH?
tubular secretion
Highly potent diuretics used to remove fluid from renal, hepatic and used to treat pulmonary edema
Loop diuretics
What diuretics work by DECREASING the reapsorption of sodium and cloride?
Loop diuretics
The most commonly used loop diuretic?
Furosemide
intracranial procedures
The elimination of large amounts of urine
diuresis
Low potency diuretics used to treat hypertension and edema
Thiazide diuretics
INHIBIT the reabsorption of 5% to 10% of the sodium load
Thiazide diuretics
Low potency diuretics ued to treat edem and hypertension used in combination with other diuretics
Potassium sparing diuretics
Adverse effects
: hyperkalemia
Inhibit oly 1% to 3% of the sodium load by altering membrane permeability
Potassium sparing diuretics
Low potency diuretics used to treat glaucoma
urine output is not significant
Carbonic anhydrase inhibitors
active in formation of aqueous humor
Most common Acetazolamide ( diamox )
Highly potent diuretics that increase blood pressure and volume by drawing fluid out the circulatory system rapidly
Osmotic diuretics
What diuretics are contraindicated in patients with hypertension and edema and are used to prevent renal failure after cadiac surgery?
Osmotic diuretics
What exerts their effects through the process of osmosis.
Most common Osmitrol and mannitol may be used
Osmotic diuretics
The primary intracellular electrolyte in the body
Potassium
Plays a vital role in nerve impulse condutin, acid balance and promotion of carbohydrate and protein metabolism
Potassium
Potassium levels in a normal range
3.5 to 5.0 mEq/L
Excess of potassium
hyperkalemia
Too low potassium levels
hypokalemia
Abnormal potassium level can lead to
Cardiac arrest
Chemical released by endocrine glands
Hormones
What maintains homeostasis by altering the activities of specific target cells?
hormones
The endocrine system works with the ____ to relay messages to maintain homeostasi
nervous system
Steriod hormons are derived from
cholesterol
Nonsteriod hormones are synthesized from
Amino acids
The majority of endocrine disorders are due to hyposecretion or hypersecretion of
hormones
Amine hormones include
epinephrine
norepinephrine
thyroxine
Plays a vital role in reproduction and growth and also regulates renal system funtion and the thyroid gland.
pituitary gland
the lobe that communicates with the hypothalamus through factors released in the blood
adenohypophysis
The hypothalamus sythesizes oxytocin and trasports hormones to the ___ where they are released
neurohypophysis
What stimulate uterine contractions and stops postpartum bleeding
Oxytocin
What gland sets the rate of metabolism?
thyroid gland
The most common cause of hyperthyroidism is
Graves disease
What helps to control calcium and phosphate concentration in the blood
Calcitonin
Author
jessicaw6291
ID
181550
Card Set
Surg 126
Description
Diuretics and Hormones
Updated
2012-11-04T14:07:53Z
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