Yazar "Erdem T.B." seçeneğine göre listele

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    The effect of body-mass index on the duration of spinal anesthesia
    (AVES İbrahim KARA, 2006) Gülhaş N.; Begeç Z.; Durmuş M.; Erdem T.B.; Yücel A.; Ersoy M.Ö.
    Aim: The purpose of our study was to examine the duration of spinal anaesthesia obtained with same volume of local anesthetics in patients who have different bodymass index (BMI). Materials and Methods: After the approval from the faculty ethical committee and patient informed consent, 90 patient (ASA I-II, 15-65 years-old) who have undergoing elective urological surgery were included in to the study. Patients had normal body weight (BMI= 20-25), excessive body weight (BMI- 25-30) and obese patients (BMI= 30-35) were divided in N, EW (Excessive weight) and O groups, respectively. Spinal block was achieved by 3 mL hyperbaric bupivacaine with a 25 G Quincke spinal needle through L4-L5. Following the spinal block, maximum sensory block level, the periods to reaching the maximum sensory block, to decline of the sensory block at two levels, the time of the motor block relief were recorded in each patient in two minutes intervals. Results: The time to two level decline of sensory block and the time of the motor block relief were longer significantly in Group EW and O than Group N (p<0.05). Although motor block relief time was similar between group EW and O, there was a significant difference between these groups regarding to two level declining time (p<0.05). 2nd and 4 th minute Bromage scores were higher in Group O than Group N and Group EW (p<0.05) Conclusion: We considered that the duration of the spinal anaesthesia obtained with same volume of local anaesthetics were lengthened parallel to BMI.
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    The effects of acute normovolemic hemodilution on coagulation parameters in coronary artery bypass surgery
    (2003) Durmuş M.; Karaaslan K.; But A.K.; Erdem T.B.; Sezgin N.; Ersoy M.Ö.
    Acute normovolemic hemodilution reduces allogenic blood transfusion requirements during surgery. We aimed to investigate the effects of acute normovolemic hemodilution on hemostasis after cardiopulmonary bypass by comparing routine coagulation tests, thrombin-antithrombin III complex, fibrinogen, D-dimer, protein C and S levels. After Ethics Committee approval 40 patients undergoing coronary artery bypass surgery were divided into two groups randomly. After induction of anesthesia, one or two units of blood were drawn from the Group I (n=20) until the hematocrit values became less than < 35% (Htc < 35%). At the same time, volume replacement was achieved with same amount of colloid infusion from peripheral veins. No additional procedure was done to Group II (n=20). All coagulation tests were measured before induction, at the end of surgery, at postoperative 6th and 24th. In addition to this time periods, thrombin-antithrombin III complex, fibrinogen and D-dimer levels were measured before cardiopulmonary bypass. The amount of transfused allogenic blood was lower in Group I compared to Group II (p<0.05). Routine coagulation tests remained within normal limits. Before cardiopulmonary bypass, fibrinogen, thrombin-antithrombin III complex and D-dimer levels were higher in Group I compared to Group II statistically (p<0.05). Protein C level was less at the end of surgery in Group I (p<0.05). Fragmentation ratio was detected lower in Group I than Group II (P<0.01). We concluded that, although acute normovolemic hemodilution reduces allogenic blood transfusion requirement and fragmentation ratio, it may activate coagulation and fibrinolysis in patients undergoing coronary artery bypass surgery.
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    The effects of dexmedetomidine on sevoflurane minimum alveolar concentrations
    (2005) Durmuş M.; But A.K.; Erdem T.B.; Do?an Z.; Ersoy M.Ö.
    Aim: Dexmedetomidine is an ?2-adrenoreceptor agonist and that reduces the anaesthetic requirement during total intravenous anaesthesia and inhalational anaesthesia. The purpose of this study was to evaluate whether dexmedetomidine administered before anesthesia induction reduces sevoflurane minimum alveolar anaesthetic concentration for endotracheal intubation (MAC EI) and skin incision (MAC). Materials and Methods: Patients were divided into MA-CEI-study and MAC-study subgroup. Both subgroups included 30 patients who were scheduled for elective surgery. Patients were not premedicated before induction of anesthesia and randomly assigned to receive iv saline 0.9% (Group I, n=15 in the each study subgroup) or dexmedetomidine 10 ?g kg-1 bolus + 1 ?g kg-1 h-1 continuous infusion (Group II, n=15 in the each study subgroup). Results: Median and 95% confidence limits for sevoflurane MACEI were 3.06 (2.89-3.25) and 2.69 (2.52-2.84), and for sevoflurane MAC were 2.21 (2.09-2.34) and 1.96 (1.84-2.09) in groups I and II, respectively. There were no significant differences regarding the MACEI and MAC of sevoflurane between groups. Conclusion: We conclude that: dexmedetomidine has no-significant affect on sevoflurane MAC, during endotracheal intubation and skin incision in this group of patients.