Term
| pressures on the right side are lower than the left side-explain the pathology |
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Definition
if you have left to right shunting, hihg pressure goes to right atrium side and then is sent back to the lungs. This will lead to over oxygenated blood
you can develop pulomary hypertensio- long term consequense right side exceed to left side |
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Term
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Definition
air flows from right to left
never having touched air
this leads to depxygenated blood and cyanosis
keisenmengers pulmonary vascular disease |
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Term
|
Definition
| can still live for 20-30 years along the way trashing their pulmonary circulation...fatal disease |
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Term
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Definition
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Term
| pulmonary artieries branch with |
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Definition
| airways and then go till the terminal bronchioles thebn branch and create s heet of blood interrupted by alveolar wall |
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Term
| distance from alevolars to artery |
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Definition
.3 microns
surfactant
alvelor i
intersit
endo
plasma
redcell |
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Term
| pulmonary blood vessels are |
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Definition
|
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Term
|
Definition
| muscular and have abundant smooth muscle to regulate blood flow to various organs |
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Term
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Definition
exagerrated proliferation
meth or cocaine, virus
exagerrated inflammatory response |
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Term
| pulomanry circulation must accept |
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Definition
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Term
| Pulmonary vascular resistance |
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Definition
| pressure difference in lung/cardiac output |
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Term
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Definition
|
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Term
| passive factors that affect pulomary vascular resistance |
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Definition
cardiac output/hydrostatic change
lung volumes/inhalation
lung position/gravity/orthostatic change
positive pressure ventilation |
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Term
| active things that cause pulmonary resistance |
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Definition
acidemia
hypoxia
sympathetic tone
hypercapnia-too much CO2 |
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Term
| Pulmonary vascular resistance in some cases can become _____ as pressures rise |
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Definition
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|
Term
| How does pulmonary vascular resistance become lower in the face of increased pressure |
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Definition
| recruitment and distension |
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Term
| pulmonary capillaries ar esurrounded by |
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Definition
|
|
Term
| alveolar gas can collapse the |
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Definition
|
|
Term
| pulmonary arteies and veins pressure around them may be less than the alveolar pressure due to |
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Definition
|
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Term
|
Definition
extra alveolar vessels
expand |
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Term
| vascular resistance from low to high |
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Definition
very low to middle it decreases
then it increases |
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Term
| at low lung volumes, extraalveolar vessels |
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Definition
| small caliber due to their intrinsic smooth muscle/elastic tisse |
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Term
| critical opening pressure |
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Definition
| the pressure necessary to initiate blood flow through pulmonary vessels within a collapsed lung |
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Term
| at large lung volumes vascular resistance |
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Definition
| increases due to stretched alveolar walls |
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Term
| where is resitance lowest |
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Definition
| functional residual capacity |
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Term
| more ventilation and blood flow |
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Definition
|
|
Term
|
Definition
P alveolar>parterial>pvenous
no flow
pathological condition
shock
ventilated but not perfused |
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Term
|
Definition
parterial.palveolar.pvenous
blood flow dictated by the difference between parterial and palvolar
waterfall
starlings |
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Term
|
Definition
| parterial.pvenous.palveoli |
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Term
|
Definition
atalactatic lung
blood vessels and alveoli collapse |
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Term
| ____ factors dominate PVR and blood flow distribution normally |
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Definition
|
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Term
|
Definition
hypoxic pulmonary vasconstircitoon.
no cns
occurs in excised segement of pulmonary artery
the PO2 of alveolar gas no thte arterioklar blood |
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Term
|
Definition
non linear
when pO2 is below 70 mm Hg lots of vasoconstiction |
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Term
| HPV Causes blood to flow to or way from hypociv regions |
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Definition
|
|
Term
| nitric oxide is a vaso_____- |
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Definition
|
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Term
|
Definition
suldenofil
improvign downsttream cyclic g protein
vasodialtor
may promote endothelial formation |
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Term
|
Definition
hpv very high
then breath
relaxation of smooth muscle tone |
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Term
|
Definition
starling's law
fluid out
hydrostatic
fluid in
colloid |
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Term
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Definition
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Term
|
Definition
interstitium around the extralveolar vessels
perivascular and peribronchial lymphatics
drain into hilar nodes |
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|
Term
hydrostatic pressure out
colloid pressure___ |
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Definition
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Term
|
Definition
mismatch contributes to hypoxemia
and dead space ventilation |
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