A High Doppler Gradient: Obstruction or No Obstruction?: A Case Report.
Journal
A&A practice
ISSN: 2575-3126
Titre abrégé: A A Pract
Pays: United States
ID NLM: 101714112
Informations de publication
Date de publication:
15 Dec 2019
15 Dec 2019
Historique:
pubmed:
28
10
2019
medline:
9
4
2020
entrez:
26
10
2019
Statut:
ppublish
Résumé
The angle correction feature in ultrasound systems is used when there is difficulty accurately aligning the Doppler beam with the flow to be interrogated. The operator can manually "correct" the angle to the actual direction of flow. Subsequently, the machine corrects the peak velocity for the angle. We present a case of aortic valve replacement (AVR) in which falsely high transaortic gradients were obtained immediately after separation from cardiopulmonary bypass (CPB). We recommend that there be a more prominent notification when the angle correction feature is used with machine prompts confirming when a peak velocity is obtained using angle correction.
Identifiants
pubmed: 31651414
doi: 10.1213/XAA.0000000000001120
pii: 02054229-201912150-00005
doi:
Types de publication
Case Reports
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
457-460Références
Chabria Y, Newhouse VL. Estimation of axial blood velocity using the Doppler equation corrected for broadening. Ultrasound Med Biol. 1997;23:967–968.
Baumgartner H, Hung J, Bermejo J, et al. Recommendations on the echocardiographic assessment of aortic valve stenosis: a focused update from the European Association of cardiovascular imaging and the American Society of Echocardiography. J Am Soc Echocardiogr. 2017;30:372–392.