Dynamic lung mechanics in late-stage emphysema before and after lung volume reduction surgery

2007 ◽  
Vol 155 (3) ◽  
pp. 234-242 ◽  
Author(s):  
A. Cortney Henderson ◽  
Edward P. Ingenito ◽  
Edgardo S. Salcedo ◽  
Marilyn L. Moy ◽  
John J. Reilly ◽  
...  
Keyword(s):  
Lung Volume ◽  
Late Stage ◽  
Volume Reduction ◽  
Lung Mechanics ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Before And After

Ventilatory Mechanics and Gas Exchange during Exercise before and after Lung Volume Reduction Surgery

1998 ◽  
Vol 158 (5) ◽  
pp. 1424-1431 ◽  
Author(s):  
EDDA M. TSCHERNKO ◽  
EVA M. GRUBER ◽  
PETER JAKSCH ◽  
OLIVER JANDRASITS ◽  
URSULA JANTSCH ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Lung Volume ◽  
Volume Reduction ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Before And After ◽  
Ventilatory Mechanics

Physiological characterization of variability in response to lung volume reduction surgery

2003 ◽  
Vol 94 (1) ◽  
pp. 20-30 ◽  
Author(s):  
Edward P. Ingenito ◽  
Stephen H. Loring ◽  
Marilyn L. Moy ◽  
Steven J. Mentzer ◽  
Scott J. Swanson ◽  
...  
Keyword(s):  
Lung Volume ◽  
Airway Resistance ◽  
Vital Capacity ◽  
Forced Expiratory Volume ◽  
Volume Reduction ◽  
Lung Mechanics ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Recoil Pressure ◽  
Physiological Characterization

This paper examines potential physiological mechanisms responsible for improvement after lung volume reduction surgery (LVRS). In 25 patients (63 ± 9 yr; 11 men, 14 women), spirometry [forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC)], lung volumes [residual volume (RV) and total lung capacity (TLC)], small airway resistance, recoil pressures, and respiratory muscle contractility (RMC) were measured before and 4–6 mo after LVRS. Data were interpreted to assess how changes in each component of lung mechanics affect overall function. Among responders (ΔFEV1 ≥ 12%; 150 ml), improvement was primarily due to an increase in FVC, not to FEV1-to-FVC ratio. Among nonresponders, FEV1, FVC, and RV/TLC did not change after surgery, although recoil pressure increased in both groups. Both groups experienced a reduction in RMC after LVRS. In conclusion, LVRS improves function in emphysema by resizing the lung relative to the chest wall by reducing RV. LVRS does not change airway resistance but decreases RMC, which attenuates the potential benefits of LVRS that are generated by reducing RV/TLC. Among nonresponders, recoil pressure increased out of proportion to reduced volume, such that no increase in vital capacity or improvement in FEV1 occurred.

Partitioning of Lung and Chest-wall Mechanics Before and After Lung-volume-reduction Surgery

1998 ◽  
Vol 158 (1) ◽  
pp. 306-310 ◽  
Author(s):  
AMAL JUBRAN ◽  
FRANCO LAGHI ◽  
MALINDA MAZUR ◽  
SAIRAM PARTHASARATHY ◽  
EDWARD R. GARRITY ◽  
...  
Keyword(s):  
Chest Wall ◽  
Lung Volume ◽  
Volume Reduction ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Chest Wall Mechanics ◽  
Before And After

Size and Morphology of the Trachea Before and After Lung Volume Reduction Surgery

2004 ◽  
Vol 183 (2) ◽  
pp. 315-321 ◽  
Author(s):  
Joseph K. Leader ◽  
Robert M. Rogers ◽  
Carl R. Fuhrman ◽  
Frank C. Sciurba ◽  
Bin Zheng ◽  
...  
Keyword(s):  
Lung Volume ◽  
Volume Reduction ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Before And After ◽  
Size And Morphology

scholarly journals Ventilatory Efficiency Before and After Lung Volume Reduction Surgery

2014 ◽  
Vol 60 (1) ◽  
pp. 63-71 ◽  
Author(s):  
H. F. Armstrong ◽  
N. E. Dussault ◽  
W. Thirapatarapong ◽  
R. S. Lemieux ◽  
B. M. Thomashow ◽  
...  
Keyword(s):  
Lung Volume ◽  
Volume Reduction ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Ventilatory Efficiency ◽  
Before And After

Lung Volumes before and after Lung Volume Reduction Surgery

1998 ◽  
Vol 157 (5) ◽  
pp. 1593-1599 ◽  
Author(s):  
MURRAY D. BECKER ◽  
YAHYA M. BERKMEN ◽  
JOHN H. M. AUSTIN ◽  
IN K. MUN ◽  
BENJAMIN M. ROMNEY ◽  
...  
Keyword(s):  
Lung Volume ◽  
Volume Reduction ◽  
Lung Volume Reduction Surgery ◽  
Lung Volume Reduction ◽  
Lung Volumes ◽  
Before And After
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