Fluids & Electrolytes Flashcards by Hannah Vyain

Q

Ideal Body Weight Equation (Males)

A

50kg + (2.3 x in>60)

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Q

Ideal Body Weight Equation (Females)

A

45.5kg + (2.3 x in>60)

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Q

Nutrition Body Weight

A

IBW + 0.25(wt - IBW)

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Q

When should you use NBW?

A

When actual body weight is 130% more than IBW

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Q

Isotonic fluid (in mOsm/L)

A

275-290 mOsm/L

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Q

MIVF calculation

A

30-40 ml/kg/day

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Q

Hypovalemic CVP

A

CVP < 10 mmHg

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Q

Normal PCWP

A

5-12 mmHg

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Q

Normal lactate

A

< 2 mmol/L

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Q

Centeral Venous Pressue (CVP) and Pulmonary Capillary Wedge Pressure (PCWP) are determinants of _____.

A

preload

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Q

What do you use first line for shock? (agent & dose)

A

1-2 L IV crystalloids (ex. LR)

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Q

What do you use second line for shock?

A

colloid (blood)

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Q

Goal CVP (post resusitation of shock)

A

8-12 mmHg

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Q

Goal MAP (post resusitation of shock)

A

> /= 65 mmHg

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Q

Goal UOP (post resusitation of shock)

A

> 0.5 ml/kg/hr

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Q

Goal Lactate (post resusitation of shock)

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A

< 2 mmol/L

Q

1/2 NS (0.45% NaCl) use

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A

maintenance fluids

Q

D5W use

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A

free water replacement

Q

NS (0.9% NaCl) use

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A

fluid resusitation; sodium replacement

Q

LR (lactated ringers) use

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A

fluid resusitation

Q

How much blood is in 1 unit of RBCs?

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A

250 mL

Q

1 unit of RBCs increases hemoglobin by ____.

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A

1 g/dL

Q

Normal sodium level

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A

135-145 mEq/L

Q

Osmolality calculation

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A

Osm = (2 x Na) + (BUN/2.8) + (Glu/18)

Normal Osmolality

275-290 mOsm/L

Maximum rise in sodium (daily)

8-12 mEq/L/day

Maximum rise in sodium (hourly)

0.5 mEq/L/hr

Asymptomatic hypovolemic hyponatremia treatment

0.9% NaCl

Symptomatic HYPOvolemic hyponatremia treatment

3% NaCl

Symptomatic ISOvolemic hyponatremia treatment

Furosemide + 3% NaCl

Asymptomatic ISOvolemic hyponatremia treatment

0.9% NaCl + fluid restriction

Symptomatic HYPERvolemic hyponatremia treatment

Furosemide + 3% NaCl

Asymptomatic HYPERvolemic hyponatremia treatment

Furosemide

Total body water calculation (Males)

TBW = 0.6 x wt(kg) = __ L

Total body water calculation (Females)

TBW = 0.5 x wt(kg) = __ L

Treatment for acute symptomatic hyponatremia

3% NaCl

How much should you increase Na in acute hyponatremia?

1-2 mEq/L/hr

Free water deficit calculation

TBW x ((Serum Na / 140) - 1)