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    Assessment of the left atrial volume index and plasma NT-proANP level in patients with acute ST-elevation myocardial infarction
    (Hospital Clinicas, Univ Sao Paulo, 2013) Bacaksiz, Ahmet; Vatankulu, Mehmet Akif; Kayrak, Mehmet; Telli, Hasan Huseyin; Ayhan, Selim S.; Sonmez, Osman; Alp, Ayse
    OBJECTIVES: Acute ST-elevation myocardial infarction is associated with ventricular dysfunction due to ischemia-induced progressive myocardial damage. The decrease in ventricular compliance causes left atrial dilatation and stretching of the atrial myocardium, which are the main stimuli for the secretion of atrial natriuretic peptide. The aim of this study was to evaluate left atrial dimensions and atrial natriuretic peptide levels in patients early after their first acute ST-elevation myocardial infarction and assess the probable interaction between coronary lesions and these measurements. METHODS: A total of 110 patients with acute myocardial infarction and 50 controls were studied. Plasma atrial natriuretic peptide was measured at admission. Left ventricular function, diameter, and volume index were evaluated using transthoracic echocardiography. Gensini and vessel scores of the patients who underwent coronary angiography were calculated. RESULTS: Plasma atrial natriuretic peptide in the patients with myocardial infarction was increased compared with that in controls (3.90 +/- 3.75 vs. 1.35 +/- 0.72 nmol/L, p<0.001). Although the left atrial diameter was comparable in patients and controls, the left atrial volume index was increased in patients with acute myocardial infarction (26.5 +/- 7.1 vs. 21.3 +/- 4.9 mL/m(2), p<0.01). Multivariate regression analysis showed a strong independent correlation between the left atrial volume index and the plasma atrial natriuretic peptide level (beta = 0.23, p = 0.03). CONCLUSIONS: The left atrial volume index and plasma atrial natriuretic peptide level were correlated in patients with acute myocardial infarction.
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    Right coronary artery arising from the distal left circumflex artery
    (Turkish Soc Cardiology, 2011) Sonmez, Osman; Gul, Enes Elvin; Altunbas, Gokhan; Ozdemir, Kurtulus
    Origination of the right coronary artery from the distal left circumflex artery is a rare anomaly. A 63-year-old woman was admitted with subacute anteroseptal myocardial infarction. Electrocardiography showed a QS pattern in V1-V3 precordial leads without ST elevation. Cardiac enzyme levels were elevated (CKMB 186 ng/ml, troponin I 27.1 ng/ml). Echocardiography showed hypokinesia of the anterior and lateral walls without valvular pathology. Coronary angiography revealed origination of the right coronary artery from the circumflex artery. The right coronary artery had a normal flow pattern and there were atherosclerotic plaques in the circumflex artery without a significant stenosis. Distal to the first diagonal branch of the left anterior descending artery, a 95% stenotic lesion was detected, which was treated with balloon dilatation followed by implantation of a bare metal stent. The patient was discharged with near-complete patency and without any complication.
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    Right ventricular involvement in anterior myocardial infarction: a tissue Doppler-derived strain and strain rate study
    (Elsevier Espana, 2013) Sonmez, Osman; Kayrak, Mehmet; Altunbas, Gokhan; Abdulhalikov, Turyan; Alihanoglu, Yusuf; Bacaksiz, Ahmet; Ozdemir, Kurtulus
    OBJECTIVE: Strain and strain rate imaging is currently the most popular echocardiographic technique that reveals subclinical myocardial damage. There are currently no available data on this imaging method with regard to assessing right ventricular involvement in anterior myocardial infarction. Therefore, we aimed to evaluate right ventricular regional functions using a derived strain and strain rate imaging tissue Doppler method in patients who were successfully treated for their first anterior myocardial infarction. METHODS: The patient group was composed of 44 patients who had experienced their first anterior myocardial infarction and had undergone successful percutaneous coronary intervention. Twenty patients were selected for the control group. The right ventricular myocardial samplings were performed in three regions: the basal, mid, and apical segments of the lateral wall. The individual myocardial velocity, strain, and strain rate values of each basal, mid, and apical segment were obtained. RESULTS: The right ventricular myocardial velocities of the patient group were significantly decreased with respect to all three velocities in the control group. The strain and strain rate values of the right mid and apical ventricular segments in the patient group were significantly lower than those of the control group (excluding the right ventricular basal strain and strain rate). In addition, changes in the right ventricular mean strain and strain rate values were significant. CONCLUSION: Right ventricular involvement following anterior myocardial infarction can be assessed using tissue Doppler based strain and strain rate