Title: | USEFULNESS OF THE CONTINUOUS-WAVE DOPPLER-DERIVED PULMONARY ARTERIAL-RIGHT VENTRICULAR PRESSURE GRADIENT JUST BEFORE ATRIAL CONTRACTION FOR THE ESTIMATION OF PULMONARY ARTERIAL DIASTOLIC AND WEDGE PRESSURES |
Authors: | Murayama, Michito Browse this author |
Mikami, Taisei Browse this author →KAKEN DB |
Kaga, Sanae Browse this author |
Okada, Kazunori Browse this author |
Hioka, Takuma Browse this author |
Masauzi, Nobuo Browse this author |
Nakabachi, Masahiro Browse this author |
Nishino, Hisao Browse this author |
Yokoyama, Shinobu Browse this author |
Nishida, Mutsumi Browse this author →KAKEN DB |
Iwano, Hiroyuki Browse this author →KAKEN DB |
Sakakibara, Mamoru Browse this author |
Yamada, Satoshi Browse this author →KAKEN DB |
Tsutsui, Hiroyuki Browse this author →KAKEN DB |
Keywords: | Continuous-wave Doppler echocardiography |
Pulmonary regurgitation |
Pulmonary arterial diastolic pressure |
Pulmonary arterial wedge pressure |
Right atrial contraction |
Issue Date: | May-2017 |
Publisher: | Elsevier |
Journal Title: | Ultrasound in medicine and biology |
Volume: | 43 |
Issue: | 5 |
Start Page: | 958 |
End Page: | 966 |
Publisher DOI: | 10.1016/j.ultrasmedbio.2017.01.006 |
PMID: | 28256342 |
Abstract: | In our new echocardiographic method, pulmonary regurgitant velocity immediately before right atrial (RA) contraction is used to estimate pulmonary artery diastolic pressure (PADP) and mean PA wedge pressure (MPAWP). Our aim here was to compare the usefulness of this new method with that of the conventional method, which uses pulmonary regurgitant velocity at end diastole. We studied 55 consecutive patients who underwent echocardiography and right-sided heart catheterization. The pulmonary regurgitant velocities just before RA contraction and at end diastole were measured to obtain echocardiographic estimates of PADP (EPADP(preA) and EPADP(ED), respectively) by adding the pressure gradients to the echocardiographically estimated RA pressure. Compared with EPADP(ED), EPADP(preA) correlated better with PADP (r = 0.87) and MPAWP (r = 0.80), and direct fixed biases were detected for EPADP(ED) but not for EPADP(preA). The area under the receiver operating characteristic curve distinguishing patients with MPAWP > 18 mm Hg was greater for EPADP(preA) (0.97) than for E/e' (0.94) and E/A (0.83). EPADP(preA) is thus useful in estimating PADP and MPAWP in patients with heart disease. |
Rights: | © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/70637 |
Appears in Collections: | 保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc) 北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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