Publications (5)3.3 Total impact

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    ABSTRACT: Inflammation plays a pivotal role in the pathogenesis of organ dysfunction after cardiopulmonary bypass (CPB). The aim of this study was to investigate whether pentoxifylline (PTX) has effects on the inflammatory process and leukocytes in cardiac surgery patients undergoing CPB. A double-blind, prospective, randomized, placebo-controlled study was undertaken to assess the effect of PTX on leukocyte counts, tumour necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6) and C-reactive protein (CRP) levels in 60 patients undergoing CPB for elective coronary artery bypass grafting. In 30 patients, 200 mg of PTX was added to 500 mL NaCl and perfused for 180 min after induction of anaesthesia and also 100 mg of PTX was added to the warm cardioplegic solution; another 30 patients received saline solution as placebo. All measurements were performed before PTX infusion (T0), after induction of anaesthesia (T1), 30 min after weaning from CPB (T2), and 6 hours (T3) and 24 hours postoperatively (T4). PTX did not change the percentage of eosinophils, basophils, neutrophils, monocytes, or lymphocytes, or CRP levels. In the control group, however, total leukocyte count and IL-6 level at T3 and T4 period were significantly higher than the study group. The progressive increment in TNF-alpha level observed at each period was also significantly prominent in the control group. CPB-related whole body inflammatory response could be partially inhibited by intraoperative PTX administration. This effect of PTX would be helpful in preventing the well-known complications of CPB-induced systemic inflammation.
    No preview · Article · Feb 2005 · Perfusion
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    ABSTRACT: Patients with chronic obstructive pulmonary disease have an increased risk of mortality and morbidity after open-heart surgery. This is mostly due to a dysfunction of the pulmonary system during and after non-pulsatile cardiopulmonary bypass. The purpose of this study was to compare the pulsatile and non-pulsatile blood flows during cardiopulmonary bypass in patients with chronic obstructive pulmonary disease. This is a prospective study. Ten patients with chronic obstructive pulmonary disease had open-heart surgery with pulsatile flow, and another 9 patients with non-pulsatile flow. We compared clinical, hemodynamic, biochemical and hematological parameters and arterial and venous blood gases before initiating cardiopulmonary bypass, at aortic cross-clamping and de-clamping, and 1 and 24 hours postoperative. In the pulsatile flow group, systemic vascular resistance at the time of aortic cross clamping (p=0.041), pulmonary vascular resistance 1 hour postoperative (p=0.05), and the percentage of neutrophils 1 hour postoperative (p=0.034) were significantly lower than those of the non-pulsatile group. Though white blood cell count was significantly high in the pulsatile group 1 hour postoperative, absolute neutrophil count was significantly low (p=0.034). The postoperative mechanical ventilation period was significantly shorter in the pulsatile flow group (p=0.016). Pulsatile blood flow during cardiopulmonary bypass has a favorable influence on patients with chronic obstructive pulmonary disease, who have high risk in open-heart surgery.
    No preview · Article · Aug 2004 · Medical science monitor: international medical journal of experimental and clinical research
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    ABSTRACT: S100beta protein level correlates with the duration of cardiopulmonary bypass (CPB) and aortic crossclamp times, but is different during pulsatile and nonpulsatile CPB. In this study, we investigated the time course of the release of S100beta protein during and after pulsatile and nonpulsatile CPB. This is a prospective study. Twenty patients had open-heart surgery with pulsatile flow and 20 with nonpulsatile flow. We compared complement proteins, interleukins, white blood cells and S100beta protein before the initiation of CPB, immediately prior to aortic crossclamping, following unclamping, and at postoperative 1st and 24th hours. In the pulsatile CPB group following aortic unclamping, S100beta protein (p = 0.028) and C3a (p = 0.011) levels were significantly lower than those of the nonpulsatile group. In the pulsatile CPB group at postoperative first hour, C3a level (p = 0.018) and absolute neutrophil count (p = 0.034) were significantly lower than those of the nonpulsatile group. None of the patients developed a neurological deficit and all of the patients survived after the operation and were discharged from the hospital. During CPB, serum S100beta protein level increases and this increase is higher in the nonpulsatile group. High serum level of S100beta protein is associated with increased levels of serum inflammatory mediators and systemic inflammatory response.
    No preview · Article · Oct 2002 · Perfusion
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    ABSTRACT: The purpose of this study was to investigate the effects of pulsatile and non-pulsatile cardiopulmonary bypass (CPB) in high risk patients. We compared clinical, hemodynamic, biochemical and hematologic parameters, arterial and venous blood gases, urine output, complement proteins, TNF-α, interleukins and S100β protein before the initiation of CPB, at the times of aortic cross-clamping and de-clamping, at Postoperative 1<sup>st</sup> and 24<sup>th</sup> hours. We concluded that pulsatile blood flow during CPB has favourable influence on inflamatory, physiologic and hematologic parameters in patients who have high risk for open heart surgery.
    No preview · Conference Paper · Feb 2001
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    ABSTRACT: A unique case of right atrial myxoma originating from the septal leaflet of the tricuspid valve is described. The tumor was detected by echocardiography and resected along with part of the septal leaflet, followed by primary repair.
    Full-text · Article · Mar 1999 · Asian cardiovascular & thoracic annals