Noninvasive Monitoring of Heart Function in Rats
Author Information
Author(s): Sebastian Holinski, Fabian Knebel, Georg Heinze, Wolfgang Konertz, Gert Baumann, Adrian C Borges
Primary Institution: Charité Campus Mitte
Hypothesis
The study aims to assess the feasibility of noninvasive monitoring of cardiac function after surgically induced ischemic cardiomyopathy in rats using echocardiography.
Conclusion
It is feasible to assess dimensions, global function, and regional contractility with echocardiography in rats suffering from chronic heart failure after myocardial infarction.
Supporting Evidence
- Mean LVEF decreased from 70 ± 6% to 40 ± 8% one month after the operation.
- LVEDD increased from 7 ± 1 mm to 9 ± 1 mm after surgery.
- Systolic anterior velocity decreased from 0.79 ± 0.25 cm/s to 0.18 ± 0.19 cm/s.
- Radial 2D strain was significantly reduced in multiple myocardial segments after myocardial infarction.
Takeaway
The researchers found a way to check how well rat hearts work after surgery without hurting them, using special ultrasound techniques.
Methodology
20 rats underwent surgery to induce ischemic cardiomyopathy, followed by echocardiographic examinations before and 4 weeks after surgery.
Limitations
A parallel group of sham operated rats could have been used to assess confounding effects not related to LAD ligation.
Participant Demographics
20 Lewis rats with a mean body weight of 346.6 g.
Statistical Information
P-Value
<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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