Agreement Of Echocardiography
Patients with shortness of breath and ankle edema who present their family doctor may have heart failure. 1.2 Unfortunately, the availability of echocardiography in the UK is not optimal.3,4 Advances in ultrasonic technology have led to the development of small echocardiography machines that are easier to transport to different locations in the Community. Studies have found that small echocardiography machines, when used in hospitals by experts, are precisely to demonstrate systolic dysfunction and left ventricular valve diseases.5,6 Studies have however not studied the performance of these small echocardiography machines in community environments where conditions may be different, such as appropriate sofas, lighting and lack of an immediate second view. Habib G, Badano L, Tribouilloy C, Vilacosta I, Zamorano JL, Galderisi M et al (2010) Recommendations for the practice of echocardiography in cases of infectious endocarditis. Eur J Echokardiogr 11 (2): 202-219 In our study, the correlation between WRC and 2D EF echo (R2-0.21) was lower than that of LV volumes, but remained statistically significant. The average difference between WRC and 2D echo was 5.7%. These values correspond to those described in the literature. 2D echo overestimates EF by 10%, according to Novosielski  and 4% according to Gardner . Sugeng et al. reported an 8% agreement between CMR and 3DECHO . The evaluation of EF in CMR and 2D echoes depends on the accuracy of LV-ESV and computer measurements. Even small differences in volume measurements can lead to an increase in errors in LV EF estimates . In our study, the LV function and mass in the 2D echo were calculated according to the Simpson rule .
According to Bellenger, this method is the most accurate for volumetric quantification of LV compared to RMC . However, this method is less reliable if the geometric model does not match the actual ventricular anatomy of patients with ischemic LV retiving, as we did in our study. Munuswamy, K. A., Alpert, M. H., Martin, R.B., Whiting, R. J. – Mechlin, N. Sensitivity and specificity of electrocardiographic criteria commonly used for enlargement of the left forecourt, determined by m-mode echocardiography. The American Journal of Cardiology 53, 829-832 (1984). The agreement between the 2D echo and the RMC was based on the number of image levels.
Given the thickness of the glass and the intersisting distance, the mass of LV can be achieved by multiplying the volume by the specific density of the myocardium . However, we studied a population of patients with a heart attack with a wide range of myocardial scars, with a specific density different from that of the healthy myocardium. This could affect the accuracy of LV mass computing in our study. Lauridzen, T.K., Selton-Suty, C., Tong, S. et al. Echocardiography for the diagnostic evaluation of infectious endocarditis. Int J Cardiovasc Imaging 32, 1041-1051 (2016). doi.org/10.1007/s10554-016-0873-5 In good conscience, there are only two studies in the literature that compare the use of ECGs with the gold standard of echocardiogram for the diagnosis of AEA in the pediatric population. The relatively small sample size used in our study may have contributed to the low value of the OCR for all parameters tested, but given the smaller sample size in other pediatric studies, this sample size is quite robust. It should be noted that this is the first study to attempt to validate previously unexplored ECG criteria, including P Mitral and high P/PR segment ratio criteria in ECGs in the pediatric population.