Does implantation of sonomicrometry crystals alter regional cardiac muscle function?
Does implantation of sonomicrometry crystals alter regional cardiac muscle function?
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DOI：
10.1016/j.echo.2007.04.010
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发表时间：
2007-12-01
影响因子：
6.5
通讯作者：
Belohlavek, Marek
中科院分区：
文献类型：
--
作者：
Korinek, Josef;Vitek, Jan;Belohlavek, Marek
Background: Sonomicrometry is a gold standard in experimental studies on myocardial motion. However, limited information exists regarding mechanical and biochemical changes produced by sonomicrometry crystal (SC) insertion into the myocardial wall.Methods. In 10 open-chest pigs, we implanted SCs into the inner half of apical anterior and midposterior regions. Longitudinal strains (systolic lengthening, end-systolic, peak shortening, and postsystolic shortening strains) and strain rate (SR) measurements (peak systolic ejection and early and late diastolic SRs) were obtained by Doppler SR echocardiography along with troponin I levels measured from peripheral blood before and after SC insertion.Results: SR and strain parameters did not change significantly after SC implantation. Troponin I levels increased significantly from less than 0.010 to 0.129 +/- 0.138 mu g/L (P
