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32 Cards in this Set

  • Front
  • Back
Certain disorders are associated with hyponatremia, hypomagnesemia, and hypokalemia, including what 2?
Diabetes mellitus

Hypertension.

Certain medications are also associated with electrolyte imbalances, including what 2 classifications?..
Diuretics

Benzodiazepines.

Many modifiable risk factors affect fluid and electrolyte balance. Regular weight-bearing exercise helps maintain_________ balance.
calcium

How does stress affect fluids and electrolytes?

Can increase cellular metabolism, blood glucose levels, and catecholamine levels, leading to fluid and electrolyte imbalancesCan increase production of ADH, which decreases urine production.
Diuretics increase?
increase urine production.
Antipsychotic agents affect fluids how?
fluid intake because they can increase thirst.
Vasoconstrictors, beta-blockers, and certain stimulants increase the risk of _____________________because they can interfere with the body's ability to regulate temperature.
fluid imbalance from heat stroke

heat related illness symptoms

Symptoms include fatigue, weakness, headache, loss of appetite, and vomiting.
If water is not replaced, risk of _________ & ___________increases.
heat exhaustion or stroke
To prevent heat-related illness, nurses can teach clients to:5
Limit outdoor activity during the hottest part of the dayTake frequent rest and water breaksDrink water before beginning to feel thirstyWear lightweight clothesWork or exercise with others when performing outdoor activities.
The physical assessment for fluid and electrolyte status focuses on the following:
skin, oral cavity and mucous membranes, eyes, cardiovascular and respiratory systems, and neurological and muscular status. The nurse will also note any unusual findings in the client's physical appearance.
View general appearance ofskin. Explain normal and abnormal skin texture, temp, etc. concerning fluid & electrolyte imbalance.
Normal: Skin is appropriate color for ethnicity, is dry. Skin is firm, warm, and moist.



Abnormal: Flushed, warm, very dry Very moist or diaphoretic or cool and pale

Mucous membranes: Assessfor dryness and cracking.
Norm: Moist in appearance.



Abnorm:Dry or cracking

Edema: How do you assess for edema?

NOrm and Abnorm??

Assess for pitting by depressing skin over tibia or on top of foot.

NOrm No swelling noted. Depressed skin rebounds immediately.




Abnormal: Depression remains when tissue is depressed (“pitting”).

Eyes: Yes, you actually check the eyes! How do you check eyes for fluid and electrolyte imbalances?
Gently palpate eyeball with lid closed.



Normal:Eyeball is soft.


Abnormal: Eyeball is firm to touch.

Assess rate and rhythm, lungsounds.
Normal: Rate is normal for age, lungs clear to auscultation.



Abnormal: Tachypnea, rales, wheezing, frothy sputum Cyanosis is a late sign.

Assess level of consciousness(LOC),
Norm:orientation, cognition. Awake and arousable Alert and oriented to person, place, and time



Abnorm: Decreased LOC, lethargy, stupor, or coma Disoriented, confused; difficulty concentrating

The nurse can use three simple clinical measurements to assess a client's fluid and electrolyte status without a primary care provider's orders.

Daily Weight


Vital Signs


Fluid intake and output (I&O):

Daily Weight (just read over)

Daily weights:Provides information about fluid volume statusSignificant changes over a short time (such as more than 5 lb in a week or less) indicate acute fluid changes in total body fluid volumeEach kilogram of weight is equivalent to 1 L of water gained or lostModerate to severe fluid volume deficits or excesses occur when client loses or gains 5–8% of total body weightParticularly important when measuring intake and output is not practical.
Vital signs: (just read over)
Changes may indicate or precede fluid, electrolyte, and acid–base imbalancesElevated temperature may be a result of dehydration or be a cause of increased fluid lossTachycardia is an early sign of hypovolemiaIrregular pulse may occur with electrolyte imbalancesPulse volume decreases with fluid volume deficit (FVD) and increases with fluid volume excess (FVE)Blood pressure decreases with FVD and increases with FVEPostural (orthostatic) hypotension may also occur with FVD.
Fluid intake and output (I&O): Measure for how long for an assessment?
Measurement of all fluid I&O over a 24-hour period is important for assessing a client's fluid and electrolyte balance
Fluid input sources that must be recorded are:
Oral fluids

Ice chips


Foods that are at room temperature (e.g., ice cream)


Tube feedings


Parenteral fluids


Intravenous medications


Catheter or tube irrigants

Fluid output sources that must be recorded are:
Urinary output:

Vomitus


and liquid feces


Tube drainage


Wound drainage


draining fistulas

Chvostek sign:

Tap over facial nerve about 2 cm anterior to tragus of ear.

Normal:No response


Abnormal: Facial muscle twitching including eyelids and lips on side of stimulus

Trousseau sign:
Inflate a blood pressure cuff on the upper arm to 20 mmHg greater than the systolic pressure, leave in place for 2–5 minutes.

Normal:No response


Abnormal: Carpal spasm: contraction of hand and fingers on affected side

In addition to standard fluid input and output sources above, the nurse must consider sources specific to clients with health alterations such as those sweating profusely or with rapid respirations.

just review

Diagnostic tests used to determine fluid and electrolyte status include the following common tests:
Serum electrolytes:

Complete blood count (CBC): Includes information about thehematocrit (Hct) (which is the percentage by volume of blood made up of RBCs.)

Normal Hct values are
40–54% in men and 36–46% in women.
Serum osmolality measures solute concentration of blood and includes sodium ions, glucose, and urea. Normal values
are 280–300 mOsm/kg H2O in children and adults. Increased values indicate FVD, while decreased values indicate FVE.
Urine osmolality measures solute concentration of urine and includes nitrogenous wastes (creatinine, urea, and uric acid). Normal values are
200–800 mOsm/kg H2O in children and adults. Increased values indicate FVD, while decreased values indicate FVE.
Urine specific gravity: An indicator of urine concentration. Normal values are
1.005–1.030, usually between 1.015 and 1.024.
High urine specific gravity indicates a ______ urine osmolality; low values indicate a _____urine osmolality.
1.high

2.Low