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Objective: The aim of this study was to prospectively evaluate the effect of percutaneous coronary intervention in the acute period on left ventricular dyssynchrony in ST-segment elevation myocardial infarction patients by using Tissue Synchronization Imaging. Methods: Forty-four ST-segment elevation myocardial infarction (MI) patients (29 male, 15 female), who were admitted within the first 12 hours of chest pain symptoms, were enrolled in the study. According to the localization of MI, the patients were divided into groups as anterior MI (n=26) and inferior MI (n=18). All echocardiography measurements were taken just before percutaneous coronary intervention (PCI) and follow-ing PCI at a mean of 3-6 days. They were assessed according to the time to reach the peak systolic velocity, which was calculated by the tissue synchronization imaging method from four pairs of non-apical alternate segments. The difference between the duration to reach the peak systolic velocity in alternate segments was regarded as left ventricle dyssynchrony and the results were compared. Results: In the anterior MI group, basal anterior (p<0.01), mid-anterior segment (p<0.01) and basal septal segment (p<0.01); in the inferior MI group, the basal septal segment (p=0.02), mid-septal segment (p=0.02), and basal and mid-inferior segment (p<0.01) values were significantly lower in the post-PCI measurements when compared to the measurements taken prior to PCI. In both groups, the intraventricular dyssyn-chrony indices of the basal anterior-basal inferior (p<0.01), mid-anterior-mid-inferior (p<0.01) segments were found to be significantly lower in the post- PCI period when compared to the pre-PCI period. Conclusion: It was found that percutaneous coronary intervention in patients with ST-elevation significantly decreases the degree of LV dys-synchrony in the acute period. [ABSTRACT FROM AUTHOR]

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The article focuses on a study that was conducted to assess the myocardial damage during the Radio frequency ablation (RFA) procedure in AV nodal re-entrant tachycardia (AVNRT) patients by measuring the levels of cardiac biochemical markers. It mentions that the cohort study was performed on AVNRT patients who had RFA. It suggests that ideal duration and grade for the applied heat should be used in RFA procedure.

A letter to the editor is presented in response to the article titled "Evaluation of right ventricular functions in patients with nasal polyposis: an observational study" by E. Şimşek and others that was published in a previous issue of the periodical.

A letter to the editor in response to the article "Evaluation of right ventricular functions in patients with nasal polyposis: an observational study" by E. Simşek and colleagues that was published in a 2013 issue is presented and a response from the author for the same is also presented.

Objective: The aim of this study was to prospectively evaluate the effect of percutaneous coronary intervention in the acute period on left ventricular dyssynchrony in ST-segment elevation myocardial infarction patients by using Tissue Synchronization Imaging., Methods: Forty-four ST-segment elevation myocardial infarction (MI) patients (29 male, 15 female), who were admitted within the first 12 hours of chest pain symptoms, were enrolled in the study. According to the localization of MI, the patients were divided into groups as anterior MI (n=26) and inferior MI (n=18). All echocardiography measurements were taken just before percutaneous coronary intervention (PCI) and following PCI at a mean of 3-6 days. They were assessed according to the time to reach the peak systolic velocity, which was calculated by the tissue synchronization imaging method from four pairs of non-apical alternate segments. The difference between the duration to reach the peak systolic velocity in alternate segments was regarded as left ventricle dyssynchrony and the results were compared., Results: In the anterior MI group, basal anterior (p<0.01), mid-anterior segment (p<0.01) and basal septal segment (p<0.01); in the inferior MI group, the basal septal segment (p=0.02), mid-septal segment (p=0.02), and basal and mid-inferior segment (p<0.01) values were significantly lower in the post-PCI measurements when compared to the measurements taken prior to PCI. In both groups, the intraventricular dyssynchrony indices of the basal anterior-basal inferior (p<0.01), mid-anterior-mid-inferior (p<0.01) segments were found to be significantly lower in the post-PCI period when compared to the pre-PCI period., Conclusion: It was found that percutaneous coronary intervention in patients with ST-elevation significantly decreases the degree of LV dyssynchrony in the acute period.

Objective: The aim of this study was to assess the right ventricular functions in patients with nasal polyposis using the strain (S) and strain rate (SR) echocardiography., Methods: A prospective, cross-sectional observational study was performed. The study included 40 patients with nasal polyposis (NP) (Group 1), and 25 healthy controls (Group 2). The study comprised patients with Stage 2 and Stage 3 nasal obstruction and no symptoms that could be associated with right ventricular heart failure. Longitudinal peak systolic strain (PSS) and peak systolic strain rate (PSSR) were measured from the basal-mid and apical segments of the right ventricle free wall. Student's t-test, Pearson's correlation analysis and Bland-Altman test were used for statistical analysis., Results: Pulmonary arterial systolic pressure was significantly higher in group 1 than group 2 (31.2 ± 5.8, 19.7 ± 4.3, respectively, p<0.001). PSS and PSSR values at the basal, mid and apical segments of the right ventricular lateral wall of the group I were significantly lower compared to the control group (p<0.001, p=0.002 and p=0.002 for PSS, p=0.003, p<0.001 and p<0.001 for PSSR, respectively). The comparison of Stage 2 and Stage 3 NP patients revealed a significant difference only in the SR measurement of the right ventricular mid segment (p=0.002). There was a significant correlation between the systolic pulmonary arterial pressure (sPAP) and right ventricular S and SR values (p<0.001)., Conclusion: In this study, S/SR echocardiography showed a subclinical deficit of the right ventricular longitudinal functions in patients with NP who are considered to have normal right ventricular functions.