Impaired gas exchange

Barros WG, Neder JA, Pereira CA, et al. Clinical, radiographic and functional predictors of pulmonary gas exchange impairment at moderate exercise in patients with sarcoidosis. Respiration 2004 71(4) 367-373. 

Hedenstierna G, Tokics L, Strandberg A, Lundquist H, Brismar B. Correlation of gas exchange impairment to development of atelectasis during anaesthesia and muscle paralysis. Acta Anaesthesiol Scand 1986 30 183-191. 

D Risk for Impaired Gas Exchange related to decreased respiratory rate... 

In advanced COPD, airflow obstruction, damaged bronchioles and alveoli, and pulmonary vascular abnormalities lead to impaired gas exchange. This results in hypoxemia and eventually hypercapnia. Hypoxemia is initially present only during exercise but occurs at rest as the disease progresses. Inequality in the ventilation/perfusion ratio (VAQ) is the major mechanism behind hypoxemia in COPD. 

Lung Fever, impaired gas exchange, SOB, malaise, anxiety Decreased FEV, infiltrate on CXR, biopsy positive for lymphocytic infiltration... 

Ventilation-perfusion mismatch leads to hypoxemia. Reduced ventilation caused by obstructed airflow or reduced perfusion caused by obstructed blood flow leads to impaired gas exchange. Interestingly, each of these conditions is minimized by local control mechanisms that attempt to match airflow and blood flow in a given lung unit. 

Be alert for impaired ventilation and gas exchange resulting from drug precipitate... 

Pulmonary interstitial fibrosis associated with deposition of collagen, progressive lung stiffening and impaired gas exchange, disability, and death occurred in many asbestos workers. 

The main difference between PPH and HPS is to be seen in the fact that the latter reveals an impaired gas exchange with hypoxaemia and a reduction in pulmonary vascular resistance due to vasodilation. The coexistence of these two pathological conditions vasodilation on the one hand and vasoconstriction on the other hand) has recently become documented more often. Any illnesses which lead to pulmonary hypertension must be ruled out as part of the differential diagnosis. 

Pison, U., Lopez, F. A., Heidelmeyer, C. F., Rossaint, R., and Falke, K. J. (1993). Inhaled nitric oxide reverses hypoxic pulmonary vasoconstriction without impairing gas exchange. J. Appl. Physiol. 74, 1287-1292. 

D Risk for Injury related to sedative or hypnotic effects ot drug Disturbed Sleep Pattern related to adveise drug eitects D Risk for Impaired Gas Exchange related to r piratory... 

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