Browsing by Author "Göçer H."

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    The effects of handgrip stress test on hemodynamic parameters before and after cilazapril treatment in patients with heart failure
    (2003) Tavli T.; Göçer H.
    Objective: To assess the effect of cilazapril treatment on several hemodynamic parameters during handgrip manuevers in patients with congestive heart failure. Cilazapril, an ACE inhibitor with high affinity, has been shown to be highly effective against a variety of vascular disorders. The effectiveness of isometric handgrip exercise on changes of cardiovascular hemodynamic parameters before and after cilazapril treatment in patients with congestive heart failure is unknown. Methods: The study population included 30 patients (16 male, 14 female) with mean age of 65±18 years. The effects of handgrip maneuver on hemodynamic parameters were studied by right heart catheterization and Doppler echocardiography. Results: Heart rate (HR) and mean arterial pressures (MAP) increased significantly after handgrip maneuver (from 95±6 beats/min to 101±12 beast/min; from 109±15 mm Hg to 118±19mm Hg, p<0.05 respectively). Pulmonary capillary wedge pressure (PCWP), pulmonary artery systolic (s) and diastolic (d) pressures (PAP), cardiac index (CI), right ventricular systolic and diastolic pressures (RVPs and RVPd), left ventricular ejection fraction (LVEF), right ventricular ejection fraction (RVEF) did not change after handgrip maneuvers (p<0.05). On the other hand, PAPs and PAPd, RVPs and RVPd, MAP and HR (p<0.05) decreased significantly during handgrip maneuvers after cilazapril treatment. However PCWP and CI, LVEF, RVEF did not change after treatment (p<0.05). Conclusion: Cardiovascular response to handgrip maneuver may be a marker of failure to respond to compensatory mechanisms. Cilazapril treatment was associated with significant improvement in hemodynamic parameters during handgrip stress test, the mechanisms of which are increased sympathetic and renin-angiotensin system activation, and altered vascular tonus.
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    Evaluation of diastolic function by transmitral color M-mode flow propagation velocity in hypertensive patients; [Hipertansif olgularda transmitral renkli M-mod akim yayilma hizi ile diyastolik fonksiyonlarin deǧerlendirilmesi]
    (2004) Şekuri C.; Tavli T.; Danahaliloǧlu S.; Göçer H.; Bayturan O.; Ütük O.; Bilge A.R.; Tikiz H.; Tezcan U.K.
    Objective: Diastolic dysfunction is considered as the most important cause of heart failure and morbidity in hypertensives. This study was designed to evaluate the relationship between the transmitral diastolic color M-mode flow propagation velocity (FPV) and left ventricular relaxation by using Doppler echocardiography. Methods: In the present study, thirty-nine patients (21 male, %58.3, age mean 52.7 ± 5.9 years) with hypertension stage-I and over, were included. Transmitral diastolic E and A velocities, E-deceleration time (DT) and isovolumic relaxation time (IVRT) were measured by pulse Doppler method. We performed color M-mode technique for measurement of FPV of transmitral diastolic flow in the apical four-chamber view. We measured slope of aliasing velocity (blue aliasing) determined by color M-mode images. Results: Flow propagation velocity values were not statistically related with age and gender, whereas differentiation of age groups were estimated as poor parabolic relationship, specially in patients over fifty years, FPV is estimated to be decreasing. Color M-mode FPV is correlated with DT, (r = -0.715, p<0.01), IVRT (r = -0.736, p<0.01 and interventricular septum thickness (r = -0.498, p<0.01), but not correlated with E/A ratio. Conclusion: Color M-mode FPV is correlated with DT and IVRT, which are important parameters for evaluation of diastolic function in hypertensive patients. This parameter is related with left ventricular relaxation and should be considered as a routine echocardiographic evaluation, because it is not affected by minimal changes in left ventricular filling pressure.
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    The effect of teicoplanin on fracture healing: An experimental study
    (Turkish Joint Diseases Foundation, 2016) Göçer H.; Önger M.E.; Kuyubaşi N.; Çirakli A.; Kir M.Ç.
    Objectives: This study aims to investigate the effect of teicoplanin on fracture healing stereologically and histopatologically. Materials and methods: Twenty male Wistar albino rats were separated into two as the study (teicoplanin) and control groups. After intramedullary fixation of the right tibia of all the rats with 0.5 mm Kirschner wire under general anesthesia, standard closed shaft fractures were created using fracture formation apparatus. Teicoplanin (10 mg/kg) and saline were administered intraperitoneally to the study and control groups, respectively. Control radiographs were taken at the end of the procedure and the rats were sacrificed after 28 days. New bone and connective tissue volumes were calculated on obtained tissue samples using unbiased stereological and histopathological techniques. Results: It was observed that teicoplanin increased the formation of bone, vascularization, and connective tissue. There was a statistically significant difference between the two groups in respect of bone and vascular total volume (p<0.05). Although an increase was observed in connective tissue total volume, no statistically significant difference was detected between the two groups (p>0.05). Conclusion: In addition to its antibacterial effect, teicoplanin may increase new bone formation; thus, it may be used safely in the treatment of bone defects accompanied with infection.