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    Comparison between brachial blood pressures obtained by aneroid sphygmomanometer and central aortic pressures: Factors affecting the measurements [Aneroid sfigmomanometreyle ölçülen brakiyal arter basincinin santral aortik basinçla karşilaştirilmasi ve farka etki eden faktörler]
    (2008) Kayrak M.; Ülgen M.S.; Yazici M.; Demir K.; Do?an Y.; Koç F.; Zengin K.
    Objectives: We compared brachial artery blood pressures (BP) measured by aneroid sphygmomanometer with ascending aortic blood pressures and evaluated the factors affecting the differences between the two methods. Study design: The study included 463 patients (177 women, 286 men; mean age 60±11 years) undergoing routine coronary angiography. Simultaneously, ascending aortic pressures were measured using a pigtail catheter and brachial artery pressures were measured from the right arm with an aneroid sphygmomanometer. Pulse pressure, fractional pulse pressure, and pulsatility index were calculated from systolic and diastolic BP values. Results: Overall, systolic (-3.1±10 mmHg) and diastolic (+3.0±7.1 mmHg) brachial pressures showed significant deviations from aortic pressures (p=0.001). Although systolic BP did not differ significantly in both methods for men and women, brachial diastolic BP was significantly different in women (+4.8 mmHg, p=0.0001). Brachial diastolic BP showed a greater deviation from the aortic diastolic pressure in patients ?60 years of age (+4.5 mmHg and +1.1 mmHg, respectively; p=0.0001). Deviation of systolic BP in hypertensive patients (-4 mmHg) was greater than that in normotensives (-2.0 mmHg, p=0.04). Deviation of brachial systolic BP was highly correlated with increases in aortic systolic pressure (p=0.0001). Differences between the two methods in systolic (-5.8 mmHg, p=0.01) and diastolic (+4.2 mmHg, p=0.03) BP were significant in patients with coexisting diabetes and hypertension. Body mass index and arm circumference were not correlated with deviations between the two methods. Conclusion: The main factors (female gender, age, hypertension, diabetes) affecting BP differences between the two methods should be considered in clinical practice.
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    The role of tissue Doppler echocardiography in the evaluation of functional capacity of patients with heart failure [Kalp yetersizli?i olan hastalarda fonksiyonel kapasitenin de?erlendirilmesinde doku Doppler ekokardiyografinin rolü]
    (2008) Düzenli M.A.; Özdemir K.; Aygül N.; Zengin K.; Gök H.
    Objectives: We investigated correlations between the New York Heart Association (NYHA) functional classification system, which is commonly used to asses functional capacity, and conventional echocardiographic and tissue Doppler echocardiographic (TDE) parameters in patients with heart failure (HF). Study design: The study included 122 patients (31 females, 91 males; mean age 59±11 years) with HF, whose left ventricular (LV) ejection fraction (EF) was less than 50%. The patients were evaluated in two groups based on the NYHA class I-II (n=79; mean age 58 years) and class III-IV (n=43; mean age 61 years). Correlations were sought between the functional status and standard two-dimensional echocardiographic and TDE parameters. Results: The NYHA class showed significant inverse correlations with LV EF, LV stroke volume, mitral deceleration time of early filling, and flow propagation velocity (Vp), and significant positive correlations with end-systolic and enddiastolic diameters and volumes, pulmonary artery pressure (PAP), and the E/Vp ratio. Mitral early (E) and late (A) diastolic peak velocities and the E/A ratio were not correlated. Concerning TDE parameters, the NYHA class was in significant inverse correlation with systolic (Sm), early (Em) and late (Am) diastolic myocardial velocities, and in positive correlation with the E/Em ratio, whereas no correlation was found with the Em/Am ratio. Linear regression analysis showed that Sm, EF, and PAP were independent variables of functional capacity (?=-0.33, p<0.005; ?=-0.26, p<0.05; ?=0.23, p<0.05, respectively). Conclusion: There is significant relationship between myocardial velocities and functional capacity, and Sm, in particular, has the strongest association compared to conventional echocardiographic and other TDE parameters.
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    Successful stent implantation to bilateral renal artery stenosis in a case with diffuse atherosclerotic involvement.
    (2008) Yazici M.; Ulgen M.S.; Kayrak M.; Koç F.; Zengin K.
    [Abstract not Available]