ATS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Personal Folders
Right arrow Download to citation manager
Right arrow Author home page(s):
John D. Crouch
Benson R. Wilcox
Right arrow Permission Requests
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Crouch, J. D.
Right arrow Articles by Belinda, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Crouch, J. D.
Right arrow Articles by Belinda, H.

Ann Thorac Surg 1987;43:613-616
© 1987 The Society of Thoracic Surgeons

Articles

The Acute Effects of Pneumonectomy on Pulmonary Vascular Impedance in the Dog

John D. Crouch, M.D.*, Carol L. Lucas, Ph.D., Blair A. Keagy, M.D., Benson R. Wilcox, M.D., Ha Belinda, B.S.

From the Division of Cardiothoracic Surgery, University of North Carolina, Chapel Hill, NC

* Address reprint requests to Dr. Crouch, 108 Burnett-Womack Building 229H, University of North Carolina, Chapel Hill, NC 27514

Pulmonary vascular impedance is a measure of the pulsatile characteristic of pressure and flow that occurs in the proximal pulmonary arteries. Pulmonary vascular resistance (PVR) is most influenced by the distal circulation of the lung. This study was performed to evaluate the changes that occurred in pulmonary vascular impedance, as well as in other hemodynamic variables, following pneumonectomy by a closed-chest method in 10 anesthetized dogs. The following observations were made (numbers compare mean values for the 10 dogs before and after pneumonectomy): (1) PVR increased from 447 to 761 dyne sec cm–5 (p = .02); (2) the oscillatory work of the right ventricle increased from 1.23 to 1.76 J/min (p = .006); (3) the mean pulmonary artery pressure increased from 14 to 18.8 mm Hg (p = .0001); and (4) cardiac output and heart rate remained unchanged. Surprisingly, the estimated characteristic impedance (the impedance to oscillatory flow in the proximal bed) did not change significantly (279 to 296 dyne sec cm–5). This observation cannot be explained by the usual lumped compartmental models classically used to characterize the pulmonary vascular bed.




This article has been cited by other articles:


Home page
 Interact CardioVasc Thorac SurgHome page
B. V. Naidu, V. B. Dronavalli, and P. B. Rajesh
Measuring lung water following major lung resection
Interact CardioVasc Thorac Surg, May 1, 2009; 8(5): 503 - 506.
[Abstract] [Full Text] [PDF]

Home page
 J. Thorac. Cardiovasc. Surg.Home page
M. Filaire, E. Fadel, B. Decante, F. Seccatore, G.-M. Mazmanian, and P. Herve
Inhaled nitric oxide does not prevent postpneumonectomy pulmonary edema in pigs
J. Thorac. Cardiovasc. Surg., March 1, 2007; 133(3): 770 - 774.
[Abstract] [Full Text] [PDF]

Home page
 Ann. Thorac. Surg.Home page
T. S. Maxey, L. G. Fernandez, T. B. Reece, W. B. Keeling, I. L. Kron, and V. E. Laubach
Endothelial Nitric Oxide Synthase is Essential for Postpneumonectomy Compensatory Vasodilation
Ann. Thorac. Surg., April 1, 2006; 81(4): 1234 - 1238.
[Abstract] [Full Text] [PDF]

Home page
 Ann. Thorac. Surg.Home page
D. A. Waller, P. Keavey, L. Woodfine, and J. H. Dark
Pulmonary Endothelial Permeability Changes After Major Lung Resection
Ann. Thorac. Surg., May 1, 1996; 61(5): 1435 - 1440.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ANN THORAC SURG ASIAN CARDIOVASC THORAC ANN EUR J CARDIOTHORAC SURG
J THORAC CARDIOVASC SURG ICVTS ALL CTSNet JOURNALS
Copyright © 1987 by The Society of Thoracic Surgeons.