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The effects of load on systolic mitral annular velocity by tissue Doppler Imaging

Ruggero Amà, Patrick Segers (UGent) , Carl Roosens (UGent) , Tom Claessens (UGent) , Pascal Verdonck (UGent) and Jan Poelaert (UGent)
(2004) ANESTHESIA AND ANALGESIA. 99(2). p.332-338
Author
Organization
Abstract
Tissue Doppler Imaging (TDI) provides information on systolic function through its systolic mitral annulus velocity wave (Sm), reflecting the peak velocity of shortening of the myocardial fibers oriented in the longitudinal direction. In this study, we evaluated the effect of load changes on Sm. Forty-two cardiac surgical patients with left ventricular ejection fraction >60% were consecutively evaluated. In 24 patients, load was changed with an IV bolus of phenylephrine (50-100 mug) or nitroglycerine (300-500 mug); in 18 patients, preload was changed with a rapid infusion of 500 mL of a gelatin solution. The sample volume of TDI was placed at the lateral side of the mitral annulus in the mid-esophageal 4-chamber view. Changing loading conditions with phenylephrine or nitroglycerine had no effect on Sm; the increase of preload in 18 patients resulted in a statistically significant increase of Sm (baseline, 8.4 +/- 2.6 cm/s; after increase of preload, 9.6 +/- 2.5 cm/s; P = 0.001). We conclude that Sm is dependent on changes in preload obtained by volume loading and cannot be recommended as an index of ventricular contractile performance in critically ill patients where significant changes in ventricular filling occur.
Keywords
HEART-FAILURE, MUSCLE, HEALTHY-SUBJECTS, WAVE DOPPLER, WALL-MOTION VELOCITY, LEFT-VENTRICULAR CONTRACTILITY, PRESSURE-VOLUME RELATION, ECHOCARDIOGRAPHY, SENSITIVITY, AFTERLOAD

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MLA
Amà, Ruggero, Patrick Segers, Carl Roosens, et al. “The Effects of Load on Systolic Mitral Annular Velocity by Tissue Doppler Imaging.” ANESTHESIA AND ANALGESIA 99.2 (2004): 332–338. Print.
APA
Amà, R., Segers, P., Roosens, C., Claessens, T., Verdonck, P., & Poelaert, J. (2004). The effects of load on systolic mitral annular velocity by tissue Doppler Imaging. ANESTHESIA AND ANALGESIA, 99(2), 332–338.
Chicago author-date
Amà, Ruggero, Patrick Segers, Carl Roosens, Tom Claessens, Pascal Verdonck, and Jan Poelaert. 2004. “The Effects of Load on Systolic Mitral Annular Velocity by Tissue Doppler Imaging.” Anesthesia and Analgesia 99 (2): 332–338.
Chicago author-date (all authors)
Amà, Ruggero, Patrick Segers, Carl Roosens, Tom Claessens, Pascal Verdonck, and Jan Poelaert. 2004. “The Effects of Load on Systolic Mitral Annular Velocity by Tissue Doppler Imaging.” Anesthesia and Analgesia 99 (2): 332–338.
Vancouver
1.
Amà R, Segers P, Roosens C, Claessens T, Verdonck P, Poelaert J. The effects of load on systolic mitral annular velocity by tissue Doppler Imaging. ANESTHESIA AND ANALGESIA. 2004;99(2):332–8.
IEEE
[1]
R. Amà, P. Segers, C. Roosens, T. Claessens, P. Verdonck, and J. Poelaert, “The effects of load on systolic mitral annular velocity by tissue Doppler Imaging,” ANESTHESIA AND ANALGESIA, vol. 99, no. 2, pp. 332–338, 2004.
@article{296526,
  abstract     = {Tissue Doppler Imaging (TDI) provides information on systolic function through its systolic mitral annulus velocity wave (Sm), reflecting the peak velocity of shortening of the myocardial fibers oriented in the longitudinal direction. In this study, we evaluated the effect of load changes on Sm. Forty-two cardiac surgical patients with left ventricular ejection fraction >60% were consecutively evaluated. In 24 patients, load was changed with an IV bolus of phenylephrine (50-100 mug) or nitroglycerine (300-500 mug); in 18 patients, preload was changed with a rapid infusion of 500 mL of a gelatin solution. The sample volume of TDI was placed at the lateral side of the mitral annulus in the mid-esophageal 4-chamber view. Changing loading conditions with phenylephrine or nitroglycerine had no effect on Sm; the increase of preload in 18 patients resulted in a statistically significant increase of Sm (baseline, 8.4 +/- 2.6 cm/s; after increase of preload, 9.6 +/- 2.5 cm/s; P = 0.001). We conclude that Sm is dependent on changes in preload obtained by volume loading and cannot be recommended as an index of ventricular contractile performance in critically ill patients where significant changes in ventricular filling occur.},
  author       = {Amà, Ruggero and Segers, Patrick and Roosens, Carl and Claessens, Tom and Verdonck, Pascal and Poelaert, Jan},
  issn         = {0003-2999},
  journal      = {ANESTHESIA AND ANALGESIA},
  keywords     = {HEART-FAILURE,MUSCLE,HEALTHY-SUBJECTS,WAVE DOPPLER,WALL-MOTION VELOCITY,LEFT-VENTRICULAR CONTRACTILITY,PRESSURE-VOLUME RELATION,ECHOCARDIOGRAPHY,SENSITIVITY,AFTERLOAD},
  language     = {eng},
  number       = {2},
  pages        = {332--338},
  title        = {The effects of load on systolic mitral annular velocity by tissue Doppler Imaging},
  volume       = {99},
  year         = {2004},
}

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