Term
| fresh gas is brought into replace a portion of the gas it contans |
|
Definition
C02 eliminated from the body
O2 brought into prelace O2 taken up into the blood |
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|
Term
| tidal volume for typical 70 kg guy |
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Definition
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|
Term
inspiratory reserve volume
tidal volume
expiratory volume |
|
Definition
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|
Term
| after a maximal exhalation |
|
Definition
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|
Term
| expiratory reserve volume and residual volume |
|
Definition
| functional residual capciy expiration affter the tidal |
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|
Term
|
Definition
| bring helium into equilibrium |
|
|
Term
| subject inhale 100 percent 02, exhale un Nitrogen colelction. |
|
Definition
|
|
Term
|
Definition
in a closed box
P1V1=P2 (v1-deltaV)
increase volume in chest and decrease volume in box
pressure at the mouth
reliable measurement of FRC |
|
|
Term
|
Definition
| tidal volume time respiartory rate |
|
|
Term
|
Definition
| volume available for gas exchange |
|
|
Term
| can you do measuring on an asleep person? |
|
Definition
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|
Term
|
Definition
pressure exterted by each gas in a space is independent of the pressures of the other gases in mixture.
partial pressure ofgas is equal to the fractional concentration time te total presure of all gases int eh mixture |
|
|
Term
|
Definition
21 percent times barametric pressure
.00004 time barametric pressure |
|
|
Term
| in humidified gas we have to take into account the partial pressure of wanter |
|
Definition
|
|
Term
|
Definition
| .21 *(760-47) 47 represents water so it is 149 as opposed to 159. |
|
|
Term
|
Definition
2.5-3L
300 ml o2
250 ml CO2 |
|
|
Term
|
Definition
alveolar ventilation
o2 consmption
CO2 consumption |
|
|
Term
barometric alveolar gas O2 concentration
CO2 concentration |
|
Definition
|
|
Term
| the more you ventilate the lower your |
|
Definition
|
|
Term
|
Definition
|
|
Term
| PO2 is largely dependeant on |
|
Definition
|
|
Term
|
Definition
functional measurement
reflects the efficeiny at eliminating co2
nearly the ame as anatomic dead space in normal lungs
in damaged lungs the raiton of physologicl dead space goes way down |
|
|
Term
| in abrnomral lungs parts of the lung doen't participate in gas echange |
|
Definition
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|
Term
| when you care about physiological dead space. acute or chronic process seemingly normal minute volume |
|
Definition
| ventilated but not perfused |
|
|
Term
| normal arterial blood levels |
|
Definition
ph 7.35-7.45
PCO2 35-45mm Hg
PO2 80-100mm Hg
hco3 calculated value 22-31 mmol/liter
o2sat |
|
|
Term
|
Definition
decreased Po2
hypoventilation
diffusion limitation
shunt
ventilation/perfusion |
|
|
Term
|
Definition
| .21 *(barametric pressure-47) |
|
|
Term
| blood gas is crucial for determining |
|
Definition
|
|
Term
| metabolism of fats and carbohydrates yields |
|
Definition
| carbonic acid eliminated by lugn s |
|
|
Term
| metaolism of proteins, phospholipids,and nucleic acids yiels |
|
Definition
| 1meq of acids eliminated by kidneys |
|
|
Term
ph drops--> alveolar ventilation increases
this can happen if there is an increase in acid buldup respiraotorily or metabolic |
|
Definition
|
|
Term
acidemia lower ph
alkalemia higher ph
acidosis process that lowers ph
alkalosis process that raises ph |
|
Definition
|
|
Term
| metabolic effects of acidosis |
|
Definition
myocardialcontractility
arterial tone
increase pulomary vascular resistance
predisposes to arrhythma
o2 curve right shift
macrophage function impair
increase bone resorption |
|
|
Term
|
Definition
left shift
cardiac arrhythmias
cerbrovascular contriction |
|
|
Term
metabolic acidosis
metabolic alkalosis
repiratory acidosis
respiratory alkalosis |
|
Definition
lwo ph low bicarb
high ph high barcard
low ph high pco2
high ph low pco2 |
|
|
Term
|
Definition
venous sample
sodum minus chloride and bicarb
usually 10-14 |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
GI loss of bicarb
renal loss of bicard
renal tubular disease
latrogenic (excessive na cal admn) |
|
|
Term
|
Definition
| renal or gi loss of H plus |
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