Estimation of the Systolic Pulmonary Arterial Pressure Using Contrast-Enhanced Continuous-Wave Doppler in Patients with Trivial Tricuspid Regurgitation.
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概要
- 論文の詳細を見る
Noninvasive estimation of pulmonary arterial pressure is important for hemodynamic monitoring of patients with heart disease. In patients with tricuspid regurgitation (TR), the peak velocity of TR on continuous-wave (CW) Doppler can be used to estimate the systolic pulmonary arterial pressure (PAPs) using the simplified Bernoulli equation. We evaluated a new technique of contrast-enhanced CW Doppler for calculating PAPs in patients with trivial TR. Forty-one patients without visible TR detected by color Doppler, pulsed Doppler or CW Doppler were evaluated. Age ranged from 19 to 73 (55 ± 12) years old. Tricuspid flow signals were recorded on CW Doppler after intravenous administration of indocyanin green (ICG) or Albunex. PAPs was calculated as; PAPs = 4 × V<SUP>2</SUP><SUB>TR</SUB> + 10 mmHg, where V<SUB>TR</SUB> is the peak velocity of TR. PAPs calculated using contrast-enhanced CW Doppler was compared with PAPs measured by the following cardiac catheterization. 1) TR signals were recorded using the contrast-enhanced CW Doppler technique in 39 of 41 patients (95%) after intravenous administration of contrast agents. 2) The error of estimate of PAPs using the contrast-enhanced CW Doppler technique was - 2.4 ± 7.5 mmHg, and the percent error was -10.7 ± 32.4% in all patients. In 20 of 39 patients (51%), the error of estimate was within ± 5 mmHg. 3) PAPs was overestimated by 12.2 ± 6.1 mmHg in patients with good contrast enhancement of TR signals. The contrast-enhanced CW Doppler technique is useful for estimating PAPs noninvasively in patients with trivial TR. It is better to assume the right atrial pressure as 3-5 mmHg, not 10 mmHg, in patients with good enhancement of trivial TR. Physiological TR may be enhanced by contrast agents in these patients.
- International Heart Journal刊行会の論文
著者
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Matsuo Shuzo
Division Of Cardiology Department Of Internal Medicine Saga Medical School
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Utsunomiya Toshinori
Division Of Cardiology Department Of Internal Medicine Saga Medical School
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Tsuji Shinsuke
Division Of Cardiology Department Of Internal Medicine Saga Medical School
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Tokushima Takashi
Division Of Cardiology Department Of Internal Medicine Saga Medical School
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Ryu Toshihiro
Division Of Cardiology Department Of Internal Medicine Saga Medical School
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Yoshida Kazuyo
Division Of Cardiology Department Of Internal Medicine Saga Medical School
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Ogawa Toshihiro
Division Of Polymer Chemistry Graduate School Of Engineering Kyoto University
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YOSHIDA Kazuyo
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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KIDO Keiko
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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OHTSUBO Yoshihiko
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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OGATA Toru
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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RYU Toshihiro
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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TOKUSHIMA Takashi
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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MATSUO Shuzo
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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OGAWA Toshihiro
Division of Cardiology, Department of Internal Medicine, Saga Medical School, Saga, Japan
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