Objective To study the changes in pulmonary gas exchange and intrapulm onary shunt during orthotopic liver transplantation (OLT) with non venovenous bypass.

Effects of Oxygen Inhalation in Prone Position on Oxygenation Index in Premature Infants;

Lung carbon monoxide diffusion function for diagnosis of hepatopulmonary syndrome.;

Prospective study of relationship between air quality and children's pulmonary functions;

Cross-sectional study of air pollution and children's pulmonary functions in Chongqing;

The changes of pulmonary function and cytokine in the acute exacerbations of asthma patients before and after treatment;

Analyses of effects of air pollution on the indexes of children's lung function;

The research on the factors effecting on the lung function in school aged children in Guangzhou;

Canonical correlation analysis of air pollution with children's lung function;

Improvement in spirometry after stem cell transplantation on a Duchenne′s muscular dystrophy patient;

The spirometry was conducted at before treatment,2 weeks and 4 weeks after treatment.

Objectives: to measure the prevalence of COPD in patientsadmitted to an urban teaching hospital, to determine the frequency of adiagnosis of COPD at admission or discharge and to emphasize the need ofspirometry.