Jpo

Hypoventilation high

normal or low jL

D02 VO; Imbalance hypoxemia does not , correct administer

100%02

hypermetabolism anemia low CO

hypoxemia correas

True shunt

V/Q mismatch alveolar collapse (atelectasis) alveolar lilling (PNA.CHF) R -> L intracardiac shunt intrapulmonary shunt (AVM)

airway (asthma. COPD) alveolar (PNA, CHF) vascular (PE)

t P.CO)

"Won't breathe"

Can't breathe"

Respiratory Drive

NM System

Lung/Airways

CW/Pleura

i RR

JVT

1VT and/or tVD

IV,

APioo

IP!™.

AbnIPFTs

Abnl PEx

Voluntary hypervent.

IPE™

Abnl CXRyCT

Nl PI™ & A-a gradient

Chemoreceptors

Neuropathies

Lung parenchyma

Chest wall

metab. alkalosis

cervical spine

emphysema

obesity

V neurologic

phrenic nerve

ILD/fibrosis

kyphosis

brainstem stroke

GBS. ALS. polio

CHF. PNA

scoliosis

tumor

NMJ

Airways

Pleura

10 alveolar hypovent

MG.LE

asthma. COPD

fibrosis

2° neurologic

botulism

bronchiectasis

effusion

sedatives

Myopathies

CF

CNS infection

diaphragm

OSA

hypothyroidism

PM/DM

muse dystrophies

hypophosphatemia

Î VCOj typically transient cause of Î P.COj; Ddx: exercise, fever, hypcnhyroidom. Î work of breatfong, Î carbs.

Î VCOj typically transient cause of Î P.COj; Ddx: exercise, fever, hypcnhyroidom. Î work of breatfong, Î carbs.

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