Echocardiographic vs Invasive Measurement of the Direct Flow Transcatheter Aortic Heart Valve Mean Gradient: Contradictory or Complementary?

Vasileios F. Panoulas; Azeem Latib; Eustachio Agricola; Helmut Baumgartner; Ottavio Alfieri; Antonio Colombo

doi:10.1016/j.cjca.2015.05.006

Echocardiographic vs Invasive Measurement of the Direct Flow Transcatheter Aortic Heart Valve Mean Gradient: Contradictory or Complementary?

Vasileios F. Panoulas, Azeem Latib, Eustachio Agricola, Helmut Baumgartner, Ottavio Alfieri, Antonio Colombo

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

In this case report, we explain the reason behind observed differences in echocardiographic and invasively measured mean aortic valve gradient after transcatheter aortic valve implantation. A 25-mm Direct Flow valve (Direct Flow Medical Inc, Santa Rosa, CA) was successfully implanted in a patient with severe aortic stenosis via the transfemoral route. The discrepancy between invasive and echocardiographic measurements could be explained by the combination of a nonflat velocity profile inside the tubular structure of the Direct Flow valve, which can cause local low pressure fields that result in true high gradients detected using Doppler, and pressure recovery.

Original language	English (US)
Article number	1846
Pages (from-to)	1303.e1-1303.e4
Journal	Canadian Journal of Cardiology
Volume	31
Issue number	10
DOIs	https://doi.org/10.1016/j.cjca.2015.05.006
State	Published - Oct 1 2015
Externally published	Yes

ASJC Scopus subject areas

Cardiology and Cardiovascular Medicine

Access to Document

10.1016/j.cjca.2015.05.006

Cite this

@article{fdde37cdd885447db452242006a11ef1,

title = "Echocardiographic vs Invasive Measurement of the Direct Flow Transcatheter Aortic Heart Valve Mean Gradient: Contradictory or Complementary?",

abstract = "In this case report, we explain the reason behind observed differences in echocardiographic and invasively measured mean aortic valve gradient after transcatheter aortic valve implantation. A 25-mm Direct Flow valve (Direct Flow Medical Inc, Santa Rosa, CA) was successfully implanted in a patient with severe aortic stenosis via the transfemoral route. The discrepancy between invasive and echocardiographic measurements could be explained by the combination of a nonflat velocity profile inside the tubular structure of the Direct Flow valve, which can cause local low pressure fields that result in true high gradients detected using Doppler, and pressure recovery.",

author = "Panoulas, {Vasileios F.} and Azeem Latib and Eustachio Agricola and Helmut Baumgartner and Ottavio Alfieri and Antonio Colombo",

note = "Publisher Copyright: {\textcopyright} 2015 Canadian Cardiovascular Society.",

year = "2015",

month = oct,

day = "1",

doi = "10.1016/j.cjca.2015.05.006",

language = "English (US)",

volume = "31",

pages = "1303.e1--1303.e4",

journal = "Canadian Journal of Cardiology",

issn = "0828-282X",

publisher = "Pulsus Group Inc.",

number = "10",

}

TY - JOUR

T1 - Echocardiographic vs Invasive Measurement of the Direct Flow Transcatheter Aortic Heart Valve Mean Gradient

T2 - Contradictory or Complementary?

AU - Panoulas, Vasileios F.

AU - Latib, Azeem

AU - Agricola, Eustachio

AU - Baumgartner, Helmut

AU - Alfieri, Ottavio

AU - Colombo, Antonio

PY - 2015/10/1

Y1 - 2015/10/1

N2 - In this case report, we explain the reason behind observed differences in echocardiographic and invasively measured mean aortic valve gradient after transcatheter aortic valve implantation. A 25-mm Direct Flow valve (Direct Flow Medical Inc, Santa Rosa, CA) was successfully implanted in a patient with severe aortic stenosis via the transfemoral route. The discrepancy between invasive and echocardiographic measurements could be explained by the combination of a nonflat velocity profile inside the tubular structure of the Direct Flow valve, which can cause local low pressure fields that result in true high gradients detected using Doppler, and pressure recovery.

AB - In this case report, we explain the reason behind observed differences in echocardiographic and invasively measured mean aortic valve gradient after transcatheter aortic valve implantation. A 25-mm Direct Flow valve (Direct Flow Medical Inc, Santa Rosa, CA) was successfully implanted in a patient with severe aortic stenosis via the transfemoral route. The discrepancy between invasive and echocardiographic measurements could be explained by the combination of a nonflat velocity profile inside the tubular structure of the Direct Flow valve, which can cause local low pressure fields that result in true high gradients detected using Doppler, and pressure recovery.

UR - http://www.scopus.com/inward/record.url?scp=84942374083&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84942374083&partnerID=8YFLogxK

U2 - 10.1016/j.cjca.2015.05.006

DO - 10.1016/j.cjca.2015.05.006

M3 - Article

C2 - 26255214

AN - SCOPUS:84942374083

SN - 0828-282X

VL - 31

SP - 1303.e1-1303.e4

JO - Canadian Journal of Cardiology

JF - Canadian Journal of Cardiology

IS - 10

M1 - 1846

ER -

Echocardiographic vs Invasive Measurement of the Direct Flow Transcatheter Aortic Heart Valve Mean Gradient: Contradictory or Complementary?

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this