Continuous Flow Left Ventricular Assist Device Therapy: A Focused Review on Optimal Patient Selection and Long-Term Follow-up Using Echocardiography

2015 ◽  
Vol 1 (1) ◽  
pp. 107-118
Author(s):  
Juan R. Vilaro ◽  
Anita Szady ◽  
Mustafa M. Ahmed ◽  
Jacqueline Dawson ◽  
Juan M. Aranda
Keyword(s):  
Patient Selection ◽  
Continuous Flow ◽  
Left Ventricular ◽  
Device Therapy ◽  
Assist Device ◽  
Ventricular Assist ◽  
Left Ventricular Assist ◽  
Long Term Follow Up

Readmission Patterns During Long-Term Follow-Up After Left Ventricular Assist Device Implantation

2018 ◽  
Vol 122 (6) ◽  
pp. 1021-1027 ◽  
Author(s):  
Himabindu Vidula ◽  
Valentina Kutyifa ◽  
Brent A. Johnson ◽  
Robert L. Strawderman ◽  
Donald Harrington ◽  
...  
Keyword(s):  
Left Ventricular Assist Device ◽  
Ventricular Assist Device ◽  
Left Ventricular ◽  
Assist Device ◽  
Ventricular Assist ◽  
Device Implantation ◽  
Left Ventricular Assist ◽  
Long Term Follow Up

scholarly journals Prediction of aortic valve regurgitation after continuous-flow left ventricular assist device implantation using artificial intelligence trained on acoustic spectra

2021 ◽  
Author(s):  
Yusuke Misumi ◽  
Shigeru Miyagawa ◽  
Daisuke Yoshioka ◽  
Satoshi Kainuma ◽  
Takuji Kawamura ◽  
...  
Keyword(s):  
Machine Learning ◽  
Left Ventricular Assist Device ◽  
Continuous Flow ◽  
Left Ventricular ◽  
Assist Device ◽  
Ventricular Assist ◽  
Time Frequency ◽  
Left Ventricular Assist ◽  
Acoustic Spectra

AbstractSignificant aortic regurgitation (AR) is a common complication after continuous-flow left ventricular assist device (LVAD) implantation. Using machine-learning algorithms, this study was designed to examine valuable predictors obtained from LVAD sound and to provide models for identifying AR. During a 2-year follow-up period of 13 patients with Jarvik2000 LVAD, sound signals were serially obtained from the chest wall above the LVAD using an electronic stethoscope for 1 min at 40,000 Hz, and echocardiography was simultaneously performed to confirm the presence of AR. Among the 245 echocardiographic and acoustic data collected, we found 26 episodes of significant AR, which we categorized as “present”; the other 219 episodes were characterized as “none”. Wavelet (time–frequency) analysis was applied to the LVAD sound and 19 feature vectors of instantaneous spectral components were extracted. Important variables for predicting AR were searched using an iterative forward selection method. Seventy-five percent of 245 episodes were randomly assigned as training data and the remaining as test data. Supervised machine learning for predicting concomitant AR involved an ensemble classifier and tenfold stratified cross-validation. Of the 19 features, the most useful variables for predicting concomitant AR were the amplitude of the first harmonic, LVAD rotational speed during intermittent low speed (ILS), and the variation in the amplitude during normal rotation and ILS. The predictive accuracy and area under the curve were 91% and 0.73, respectively. Machine learning, trained on the time–frequency acoustic spectra, provides a novel modality for detecting concomitant AR during follow-up after LVAD.

Effects of Continuous-Flow Left Ventricular Assist Device Therapy on Peripheral Vascular Function

ASAIO Journal ◽  
2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Ersin Kaya ◽  
Umut Kocabas ◽  
Evrim Simsek ◽  
Sanem Nalbantgil ◽  
Umit Kahraman ◽  
...  
Keyword(s):  
Left Ventricular Assist Device ◽  
Ventricular Assist Device ◽  
Vascular Function ◽  
Continuous Flow ◽  
Left Ventricular ◽  
Peripheral Vascular ◽  
Device Therapy ◽  
Assist Device ◽  
Ventricular Assist ◽  
Left Ventricular Assist

Psychological outcomes of left ventricular assist device long‐term treatment: A 2‐year follow‐up study

2019 ◽  
Vol 44 (1) ◽  
pp. 67-71 ◽  
Author(s):  
Alessandra Voltolini ◽  
Gerardo Salvato ◽  
Maria Frigerio ◽  
Manlio Cipriani ◽  
Enrico Perna ◽  
...  
Keyword(s):  
Left Ventricular Assist Device ◽  
Term Treatment ◽  
Left Ventricular ◽  
Assist Device ◽  
Ventricular Assist ◽  
Follow Up Study ◽  
Long Term Treatment ◽  
Left Ventricular Assist
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