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Perfusion Program Fall 2014 > CVPR 322 Physiologic Assesment / Intructor Ed > Flashcards

CVPR 322 Physiologic Assesment / Intructor Ed Flashcards

1
Q

PaCO2

A

partial pressure of carbon dioxide dissolved in the plasma.

35 - 45 mmHg

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2
Q

pH normal range

A

7.35 - 7.45

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3
Q

PaO2

A

partial pressure of oxygen
dissolved in the plasma only
90 - 100 mmHg

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4
Q

HCO3

A

Bicarbonate buffer

22 - 26

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5
Q

BE

A

Base excess

-2) — (+2

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6
Q

SaO2

A

oxygen is bound to hemoglobin

> 95 %

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7
Q

Significant deviations from normal pH ranges are _____ _____ and may be life threatening
Achieved by _____ and _____ systems

A

Poorly tolerated

Respiratory
Renal

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8
Q

What are the two buffers that work in pairs ?

A

Carbonic acid
&
Base bicarbonate

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9
Q

H2CO3

A

Carbonic Acid

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10
Q

NaHCO3

A

Base bicarbonate

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11
Q

What buffer is linked to the RESPIRATORY compensatory mechanism ?

A

Carbonic Acid

H2CO3

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12
Q

What buffer is linked to the RENAL compensatory mechanism ? “metabolic component”

A

base bicarbonate

NaHCO3

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13
Q

98% normal metabolites are in the form of ?

A

CO2

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14
Q

Process of kidneys excreting H+ into the urine and reabsorbing HCO3- into the blood from the renal tubules

A

1) active exchange; Na+ for H+ between the tubular cells and glomerular filtrate
2) carbonic anhydrase is an enzyme that accelerates hydration/dehydration CO2 in renal epithelial cells

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15
Q

accelerates hydration/dehydration CO2 in renal epithelial cells

A

carbonic anhydrase

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16
Q

Acidosis

A

pH < 7.35
PCO2 > 45
HCO3 < 22

17
Q

Alkalosis

A

pH > 7.45
PCO2 < 35
HCO3 > 26

18
Q

CO2 + H2CO3 =

A

Drop in pH

19
Q

5 Causes of Respiratory Acidosis non-CPB related?

A
  • emphysema
  • OD
  • narcosis
  • respiratory arrest
  • airway obstruction
20
Q

pH < 7.35

HCO3 < 22

A

Metabolic Acidosis

21
Q

Causes of Metabolic Acidosis

A
  • renal failure
  • DKA
  • lactic acidosis
  • excessive diarrhea
  • cardiac arrest

Perfusion Program Fall 2014 (14 decks)

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