In vitamin D deficient subjects, for each one unit increase in pack-years of smoking, mean forced expiratory volume in one second (FEV1) was 12 ml lower, compared with a mean reduction of 6.5 ml ...

Compared to those who never smoked, stable heavy smokers experienced the greatest decline in lung function as measured by FEV1, or the amount of air that can be forcibly exhaled in one second (-42 ...

The bronchial challenge is regarded as positive when FEV1 or FVC increase by 12% or 200 ml compared to baseline values 15–20 minutes after administering 400 mcg of Salbutamol ... Quitting smoking ...

In vitamin D deficient subjects, for each one unit increase in pack-years of smoking, mean forced expiratory volume in one second (FEV1) was 12 ml lower, compared with a mean reduction of 6.5 ml ...

Lung-Protective Ventilation Ups Outcomes Post-Abdominal Op For current male smokers, vitamin D deficiency correlates with lower lung function and more rapid lung function decline. (HealthDay News ...

Millions of Long-Term Smokers Have Lung Disease that Defies Diagnosis UCSF study finds current definition of chronic tobacco-related lung diseases leaves patients undiagnosed and untreated. ... By ...

Current COPD guidelines advocate a fixed < 0.70 FEV1/FVC cutpoint to define airflow obstruction. We compared rate of lung function decline in respiratory symptomatic 40+ subjects who were ...

Your FEV1 result can be used to determine how severe your COPD is. Learn more about how to interpret your FEV1 reading. ... In most people, COPD is caused by cigarette smoking, ...

Smoking intensity was also a significant risk factor. Lung function was measured using forced vital expiratory volume (FEV1) and forced vital capacity (FVC). FEV1 to FVC ratio was the primary outcome, ...

Quitting smoking may have a quick payoff for people with asthma. ... After one week of not smoking, scores on that same lung function test — called FEV1 — began to improve.

At high levels of marijuana use—for example, in those who smoked more than 20 times a month—FEV1 slipped back to levels seen in nonusers and a reduction was seen in, um, the most chronic smokers.