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The effect of pacin...
The effect of pacing-induced heart rate variation on longitudinal and circumferential regional myocardial function after acute beta-blockade a cardiac ultrasound study
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- Strotmann, J. M. (författare)
- Östergötlands Läns Landsting,Hjärtcentrum
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- Janerot Sjöberg, Birgitta (författare)
- Östergötlands Läns Landsting,Linköpings universitet,Klinisk fysiologi,Hälsouniversitetet,Hjärtcentrum
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- Kimme, Peter (författare)
- Östergötlands Läns Landsting,Linköpings universitet,Anestesiologi,Hälsouniversitetet,Intensivvårdskliniken US
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- Fröhlich, B. (författare)
- University of Heidelberg
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- Voight, J-U. (författare)
- Östergötlands Läns Landsting,Hjärtcentrum
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- Schreckenberger, A. B. (författare)
- Östergötlands Läns Landsting,Hjärtcentrum
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- Hatle, L. (författare)
- Östergötlands Läns Landsting,Hjärtcentrum
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- Sutherland, G. R. (författare)
- Östergötlands Läns Landsting,Hjärtcentrum
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(creator_code:org_t)
- Oxford University Press (OUP), 2000
- 2000
- Engelska.
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Ingår i: European Journal of Echocardiography. - : Oxford University Press (OUP). - 1525-2167 .- 1532-2114. ; 1:3, s. 184-195
- Relaterad länk:
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https://academic.oup...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Aims: To evaluate the effect of acute beta-blockade in combination with differing heart rates on longitudinal and circumferential regional myocardial function using Doppler myocardial imaging and two-dimensional-echocardiography. Methods and Results: In seven pigs the following echocardiographic indices were measured at baseline, after beta-blockade both without and with atrial pacing: wall thickening fraction, fractional shortening, myocardial peak systolic velocity, transmyocardial velocity gradient and systolic velocity time integral of the posterolateral wall in short-axis view; mitral valve plane excursion, myocardial peak systolic velocity and systolic velocity time integral of the posterolateral wall in an apical five-chamber view. Peak systolic velocities and velocity gradients decreased significantly following acute beta-blockade but no further decay occurred at high heart rate due to pacing. The velocity time integrals and mitral valve plane excursion showed a tendency to decrease following beta-blockade but only after pacing were they significantly reduced. The wall thickening fraction and fractional shortening showed a significant reduction after beta-blockade but no further decay after pacing. Conclusions: Changes in systolic velocities and velocity gradients were independent of heart rate reduction under high dosage beta-blockade, whereas wall thickening fraction, mitral valve plane excursion and velocity time integrals changed due to pacing.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk laboratorie- och mätteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Laboratory and Measurements Technologies (hsv//eng)
Nyckelord
- doppler myocardial imagingleft ventricular functionbeta-blockadeheart rate variation
- Medical engineering
- Medicinsk teknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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