Results 301 to 310 of about 5,335,329 (375)

The Vital Capacity Is Vital

Chest, 2016
Epidemiologic research has revealed a substantial portion of the general population with abnormal spirometry results that are characterized by decreased FEV1 and FVC but a preserved FEV1/FVC ratio. This restrictive spirometry pattern (RSP) is inconsistently defined in the literature and not well addressed by current guidelines; there is an accumulating
Matthew D. Jankowich, Matthew D. Jankowich, Mark Godfrey   +2 more
openaire   +3 more sources

Relative effects of forced vital capacity and ALSFRS‐R on survival in ALS

Muscle and Nerve, 2021
Amyotrophic lateral sclerosis (ALS) is a degenerative neuromuscular disease with marked clinical heterogeneity. This heterogeneity can be partly captured by clinical measures, such as the forced vital capacity (FVC) and ALS Functional Rating Scale ...
Salah A. Daghlas, R. Govindarajan
semanticscholar   +1 more source

Fall in vital capacity with posture

British Journal of Diseases of the Chest, 1985
In a study of 147 subjects (50 normals, 50 with obstructive, and 47 with restrictive lung function), the mean reduction in forced vital capacity from standing to supine (delta FVC) was 7.5% (SD +/- 5.7), 11.2% (+/- 13.4), and 8.2% (+/- 7.7) respectively, with no significant difference between groups. The respective 95% upper confidence limits were 19%,
Malcolm Green, B. Hunt, S.M. Allen
openaire   +3 more sources

Effect of posture on vital capacity

Journal of Applied Physiology, 1986
The influence of some extreme body postures on vital capacity (VC) was examined in young adult humans. Two postures required full support of body weight by the arms: arms up, hanging from a bar, and arms down with hands gripping parallel bars. Three involved muscles that flex and extend the trunk: a partial sit-up position while supine and nearly ...
E. Healey, M. Appel, A. Childs, S. Wong, S. Markowitz, J. Mead   +5 more
openaire   +3 more sources

Forced Vital Capacity, Slow Vital Capacity, or Inspiratory Vital Capacity: Which Is the Best Measure of Vital Capacity?

Journal of Asthma, 1998
Vital capacity can be measured as forced vital capacity (FVC), slow vital capacity (SVC), and inspiratory vital capacity (IVC). Although it is well known that the latter two are generally greater, a systematic comparison of the three in subjects with different degrees of airways obstruction has not been made.
openaire   +3 more sources

The Vital Capacity in Pulmonary Emphysema

Annals of Internal Medicine, 1964
Excerpt It is commonly believed that the vital capacity of patients with obstructive or bullous pulmonary emphysema is more or less diminished; mild emphysema is supposed to be accompanied by sligh...
Abramowitz S, Maurice J. Small, George C. Leiner   +2 more
openaire   +3 more sources

Inspiratory and Expiratory Vital Capacity

Chest, 1984
Vital capacity (VC) is frequently measured by two different methods (inspiration vs expiration). The difference in results is not readily available in the literature. The VC was measured both ways in 60 subjects, including many with obstructive airway disease. Only a minor difference in mean VC (75 +/- ml SD) was found.
Harold Z. Bencowitz, Harold Z. Bencowitz
openaire   +3 more sources

Dysanapsis in normal lungs assessed by the relationship between maximal flow, static recoil, and vital capacity.

American Review of Respiratory Disease, 2015
To quantify the degree of association, if any, between lung size and airway size in humans, the ratio of a measurement known to be sensitive to airway size (maximal expiratory flow divided by static recoil pressure at 50% of vital capacity) to one ...
J. Mead
semanticscholar   +1 more source

Vital Capacity and Timed Vital Capacity in Normal Men Over Forty

Journal of Applied Physiology, 1956
The vital capacity and the 1-second timed vital capacity were measured on 428 healthy men between the ages of 40 and 88 who were living in a rural area of Massachusetts and who came voluntarily for...
Elizabeth G. Flanagan, John Pemberton
openaire   +3 more sources