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25 Cards in this Set

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  • Back
BMP (aka chem 7) contains...
-lytes
-BUN/Cr
-glucose
CMP =...
BMP + LFT
What are the 'lytes' that are tested?
-Na
-K
-Cl
-CO2
Cholesterol panel includes...
-TC
-LDL
-HDL
-TG
TFT tests for...
-T3
-T4
-TSH
What cardiac enzymes are tested?
-myoglobin
-CPK
-troponin
-MB fraction
-LDH
osmolality
-conc of solutes in solution
-use with lytes to assess the kidney function
-high osmo stimulates ADH to cause for water reabs and dilute the particles
Factors that can influence your chemistry results...
-hemolysis (effects K)
-timing (blood sugars, cortisol)
-lab error (repeat the test)
BUN
-end-product of protein metabolism, formed in the liver and excreted in the urine
-NL: 10-20
-use in conjunction with Cr
Elevated BUN...
-azotemia
Dec'd BUN...
-liver disease
-fluid overload
-malnutrition
-early pregnancy
-nephrotic syndrome
prerenal azotemia
-Urea levels rise with hemorrhage, shock, trauma, sepsis, diets high in protein, increased protein catabolism (tumors), dehydration
postrenal azotemia
-urethral obstruction
SCr
-NL: 0.5-1.2
-depends on muscle mass
-more stable than BUN (better reflection of kidney function)
elevated SCr
-decreased renal function &/or renal blood flow, diabetic nephropathy, urinary tract obstruction, rhabdomyolysis, increased muscle mass
dec'd SCr
-loss of muscle mass
BUN/Cr ratio
-NL: 10:1
-If >15:1, look for prerenal causes
-<10:1, look for liver disease, low protein diets, dialysis
Na
-NL: 136-145
-critical values <120 or >160
-Major extracellular cation
hyponatremia
-most common electrolyte disturbance in hospitalized patients
-Never replenish Na more than 12mEq/L/day
hypovolemic hyponatremia
-n/v/d
-diuretics
hypervolemic hyponatremia
-CHF, edema, ascites, IV fliuds
euvolemic hyponatremia
-SIADH
hypernatremia
-find thirst and hyper-reflexia
-Causes- inc. water losses, burns, diabetes insipidis, hyperaldosteronism, Cushing’s syndrome
K
-NL: 3.5-5
-Predominant intracellular cation
-Ace-inhibitors increase K+
hypokalemia
-alkalosis