Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2012 Apr;6(2):169-71.
doi: 10.4103/1658-354X.97033.

Pacing to treat low cardiac output syndrome following elective aortic valve replacement

Muhammad Ishaq  1
Affiliations
Case Reports

Pacing to treat low cardiac output syndrome following elective aortic valve replacement

Muhammad Ishaq. Saudi J Anaesth. 2012 Apr.

Abstract

We report a case of low cardiac output syndrome caused by dynamic left ventricular (LV) outflow obstruction after aortic valve replacement (AVR). This recognized phenomenon probably occurs more frequently than appreciated, and the author suggests that this should be considered when managing patients with severe hemodynamic instability after AVR. In addition, we also focus on the fact that invasive pacemaker systems have significant effects on cardiac output augmentation postoperatively and in long-term management of patients with LV outflow tract (LVOT) obstruction following AVR. The possible mechanisms and subsequent treatments are discussed.

Keywords: Aortic valve replacement; DDD pacing; echocardiography.

PubMed Disclaimer

Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
a) TOE shows obstruction of the LVOT caused by SAM of the anterior leaflet of mitral valve and septal hypertrophy b) TOE shows absence of systolic anterior motion (SAM) of mitral valve after pacing
See this image and copyright information in PMC

References

    1. Bartunek J, Sys SU, Rodrigues AC, van Schuerbeeck E, Mortier L, de Bruyne B. Abnormal systolic intraventricular flow velocities after valve replacement for aortic stenosis.Mechanisms, predictive factors, and prognostic significance. Circulation. 1996;93:712–9. - PubMed
    1. Sutton MS, Plappert T, Spiegel A, Raichlen J, Douglas P, Reichek N, et al. Postoperative changes in left ventricular chamber size, architecture and function in aortic stenosis and aortic regurgitation and their relation to intraoperative changes in afterload: A prospective two-dimensional echocardiographic study. Circulation. 1987;76:77–89. - PubMed
    1. Prinzen FW, Augustijn CH, Allessie MA, Arts T, Delhaas T, Reneman RS. The time sequence of electrical and mechanical activation during spontaneous beating and ectopic stimulation. Eur Heart J. 1992;13:535–43. - PubMed
    1. Posma JL, Blanksma PK, Van Der Wall EE, Vaalburg W, Crijns HJ, Lie KI. Effects of permanent dual chamber pacing on myocardial perfusion in symptomatic hypertrophic cardiomyopathy. Heart. 1996;76:35862. - PMC - PubMed
    1. Jeanrenaud X, Goy JJ, Kappenberger L. Effects of dual chamber pacing in hypertrophic obstructive cardiomyopathy. Lancet. 1992;339:1318–23. - PubMed

Publication types