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J Thorac Cardiovasc Surg 2008;136:1602-1603
© 2008 The American Association for Thoracic Surgery

Brief Communication

Noninvasive assessment of cardiac function during ventricular assist system support using 64-row multidetector computed tomographic angiography

Koji Takeda, MDa, Goro Matsumiya, MDa,*, Hajime Matsue, MDa, Seiki Hamada, MDb, Tomoyuki Fujita, MDa, Yoshiki Sawa, MDa

a Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
b Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan

Received for publication November 26, 2007; accepted for publication February 2, 2008.

* Address for reprints: Goro Matsumiya, MD, Division of Cardiovascular Surgery, Department of Surgery, Osaka University Graduate School of Medicine, 565-0871 2-2 Yamadaoka, Suita, Osaka, Japan. (Email: matsumg@surg1.med.osaka-u.ac.jp).

The first 20% of the full text of this article appears below.

In patients with severe heart failure, mechanical unloading with the use of a left ventricular assist system (LVAS) has been reported to lead to myocardial recovery, which occasionally enables patients to undergo successful device removal.1-3Go However, there are no conclusive data on how to predict a heart will sufficiently recover because the LVAS imposes a specific situation.

The echocardiographic criteria previously proposed by another group3Go (left ventricular [LV] diastolic dimension < 55 mm, LV ejection fraction > 45%) aid in the decision to remove the LVAS. However, because of the severe limitations of heart transplantation, we have adopted more liberal criteria and accepted LV function below these values for LVAS weaning unless the pulmonary capillary wedge pressure increases during the device halt. We think these decision processes are still immature, and we are unable to predict successful weaning.

The recent advance of multidetector computed tomographic angiography (MDCTA) provides various cardiac parameters with high image quality and quantification possibilities in a single image . . . [Full Text of this Article]




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K. Takeda, K. Taniguchi, Y. Shudo, S. Kainuma, S. Hamada, H. Matsue, G. Matsumiya, and Y. Sawa
Mechanism of Beneficial Effects of Restrictive Mitral Annuloplasty in Patients With Dilated Cardiomyopathy and Functional Mitral Regurgitation
Circulation, September 14, 2010; 122(11_suppl_1): S3 - S9.
[Abstract] [Full Text] [PDF]


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