| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Section of Clinical Biophysics, Cardiology Branch, National Heart Institute, National Institutes of Health, Bethesda, Maryland
The pressure-diameter relationship in the main pulmonary artery of man was estimated in 11 patients undergoing open-heart surgery. The diameter was measured with a recording caliper sutured to the vessel wall. The lateral intravascular pressure was measured with a 20-gauge needle connected directly to a Statham P23Db strain gauge. In the eight patients with normal pulmonary artery pressure the results indicate: 1) the shapes of the pressure and diameter curves are similar; 2) the mean value for the ratio of change in radius to change in pressure (
R/P) x 103 was 8.77 cm/cm H2O (±sd 2.10); 3) the mean value for the pressure-strain elastic modulus (Ep) was 159.0 g/cm2 (±sd 26.0); and 4) the mean change in cross-sectional area during an average cardiac cycle was 22.9% of the diastolic value. In three patients with pulmonary hypertension the value of both R/P and the pressure-strain elastic modulus was lower.
This article has been cited by other articles:
|
|
 |
|
  C. T.-J. Gan, J.-W. Lankhaar, N. Westerhof, J. T. Marcus, A. Becker, J. W. R. Twisk, A. Boonstra, P. E. Postmus, and A. Vonk-Noordegraaf Noninvasively Assessed Pulmonary Artery Stiffness Predicts Mortality in Pulmonary Arterial Hypertension Chest, December 1, 2007; 132(6): 1906 - 1912. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. S. Krenz and C. A. Dawson Flow and pressure distributions in vascular networks consisting of distensible vessels Am J Physiol Heart Circ Physiol, June 1, 2003; 284(6): H2192 - H2203. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. Shandas, C. Weinberg, D. D. Ivy, E. Nicol, C. G. DeGroff, J. Hertzberg, and L. Valdes-Cruz Development of A Noninvasive Ultrasound Color M-Mode Means of Estimating Pulmonary Vascular Resistance in Pediatric Pulmonary Hypertension: Mathematical Analysis, In Vitro Validation, and Preliminary Clinical Studies Circulation, August 21, 2001; 104(8): 908 - 913. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E. Laffon, F. Laurent, V. Bernard, L. De Boucaud, D. Ducassou, and R. Marthan Noninvasive assessment of pulmonary arterial hypertension by MR phase-mapping method J Appl Physiol, June 1, 2001; 90(6): 2197 - 2202. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Laffon, V. Bernard, M. Montaudon, R. Marthan, J.-L. Barat, and F. Laurent Tuning of pulmonary arterial circulation evidenced by MR phase mapping in healthy volunteers J Appl Physiol, February 1, 2001; 90(2): 469 - 474. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. Huang and R. T. Yen Zero-stress states of human pulmonary arteries and veins J Appl Physiol, September 1, 1998; 85(3): 867 - 873. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. G. Caro, G. K. Harrison, and P. Mognoni Pressure Wave Transmission in the Human Pulmonary Circulation Cardiovasc Res, January 1, 1967; 1(1): 91 - 100. [Abstract] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |
