Literature DB >> 19184284

Frequency analysis of high-intensity transient signals of transcranial Doppler ultrasound in patients supported with a left ventricular assist device.

Koichi Sato1, Kazuhiko Hanzawa, Takeshi Okamoto, Shunei Kyo, Jun-ichi Hayashi.   

Abstract

Left ventricular assist devices (LVADs) have become more important than ever for patients with terminal heart disease. The chronic shortage of donors for heart transplantation may enhance the importance of LVADs as destination therapy. To prevent cerebral complications, the evaluation of high-intensity transient signals (HITS) of transcranial Doppler (TCD) ultrasound is important. In the present study, HITS were measured on seven occasions in patients supported with LVADs. The high-frequency counts in HITS were greater than the low-frequency counts (47 +/- 42 vs. 9 +/- 9 in 3 min, P = 0.025), and declined further with oxygen delivery to the patient. The high frequency of signals may imply air microemboli, and the counts may increase with time.

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Mesh：

Year:  2008        PMID： 19184284     DOI： 10.1007/s10047-008-0430-7

Source DB:  PubMed          Journal:  J Artif Organs        ISSN： 1434-7229            Impact factor:   1.731


  8 in total

1.  Solid and gaseous cerebral microembolization during off-pump, on-pump, and open cardiac surgery procedures.

Authors:  Yasir Abu-Omar; Lognathen Balacumaraswami; David W Pigott; Paul M Matthews; David P Taggart
Journal:  J Thorac Cardiovasc Surg       Date:  2004-06       Impact factor: 5.209

2.  High level of cerebral microembolization in patients supported with the DeBakey left ventricular assist device.

Authors:  Nils H Thoennissen; Michael Schneider; Achim Allroggen; Martin Ritter; Ralf Dittrich; Christof Schmid; Hans H Scheld; E Bernd Ringelstein; Darius G Nabavi
Journal:  J Thorac Cardiovasc Surg       Date:  2005-10       Impact factor: 5.209

Review 3.  Basic identification criteria of Doppler microembolic signals. Consensus Committee of the Ninth International Cerebral Hemodynamic Symposium.

Authors: 
Journal:  Stroke       Date:  1995-06       Impact factor: 7.914

4.  Transcranial detection of microembolic signals in patients with a novel nonpulsatile implantable LVAD.

Authors:  E V Potapov; B A Nasseri; M Loebe; M Kukucka; A Koster; H Kuppe; G P Noon; M E DeBakey; R Hetzer
Journal:  ASAIO J       Date:  2001 May-Jun       Impact factor: 2.872

5.  Influence of inflammation and pump dynamic on cerebral microembolization in patients with Continuous-Flow DeBakey LVAD.

Authors:  Nils H Thoennissen; Achim Allroggen; Martin Ritter; Ralf Dittrich; Christof Schmid; Hans H Schmid; E Bernd Ringelstein; Darius G Nabavi
Journal:  ASAIO J       Date:  2006 May-Jun       Impact factor: 2.872

6.  Left ventricular assist device as destination for patients undergoing intravenous inotropic therapy: a subset analysis from REMATCH (Randomized Evaluation of Mechanical Assistance in Treatment of Chronic Heart Failure).

Authors:  Lynne Warner Stevenson; Leslie W Miller; Patrice Desvigne-Nickens; Deborah D Ascheim; Michael K Parides; Dale G Renlund; Ronald M Oren; Steven K Krueger; Maria Rosa Costanzo; L Samuel Wann; Ronald G Levitan; Donna Mancini
Journal:  Circulation       Date:  2004-08-16       Impact factor: 29.690

7.  Ventricular assist systems: experience in Japan with Toyobo pump and Zeon pump.

Authors:  H Takano; T Nakatani
Journal:  Ann Thorac Surg       Date:  1996-01       Impact factor: 4.330

8.  Doppler microembolic load predicts risk of thromboembolic complications in Novacor patients.

Authors:  Darius G Nabavi; Joerg Stockmann; Christof Schmid; Michael Schneider; Dieter Hammel; Hans H Scheld; E Bernd Ringelstein
Journal:  J Thorac Cardiovasc Surg       Date:  2003-07       Impact factor: 5.209
  8 in total
  2 in total

Review 1.  Journal of Artificial Organs 2008: the year in review.

Authors:  Y Sawa; E Tatsumi; A Funakubo; T Horiuchi; K Iwasaki; A Kishida; T Masuzawa; K Matsuda; M Nishimura; T Nishimura; Y Tomizawa; T Yamaoka; H Watanabe
Journal:  J Artif Organs       Date:  2009-03-29       Impact factor: 1.731

2.  Microembolic signals and strategy to prevent gas embolism during extracorporeal membrane oxygenation.

Authors:  Paolo Zanatta; Alessandro Forti; Enrico Bosco; Loris Salvador; Maurizio Borsato; Fabrizio Baldanzi; Carolina Longo; Carlo Sorbara; Pierluigi Longatti; Carlo Valfrè
Journal:  J Cardiothorac Surg       Date:  2010-02-04       Impact factor: 1.637
  2 in total

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