Browsing by Author "Yentür, A"

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    Assessment of neuromuscular and haemodynamic effects of cisatracurium and vecuronium under sevoflurane-remifentanil anaesthesia in elderly patients
    Keles, GT; Yentür, A; Çavus, Z; Sakarya, M
    Background and objective: Neuromuscular block times, quality of muscle relaxation for tracheal tube insertion, and the haemodynamic effects after cisatracurium and vecuronium under sevoflurane-remifentanil anaesthesia were compared in elderly patients. Methods: The study was performed in 40 patients over 65 yr of age. Anaesthesia was induced with thiopental, and maintained with sevoflurane in N2O/O-2 and remifentanil. Cisatracurium 0.15 mg kg(-1) or vecuronium 0.1 mg kg(-1) were administered after induction. Intubation was attempted when neuromuscular block was 95%. Onset time, clinical duration of action, recovery index, spontaneous recovery time and tracheal intubation conditions were assessed. Haemodynamic parameters were also monitored. Results: The average ages of the patients were 72.5 +/- 5.1 and 73.6 +/- 6.3 in the cisatracurium and vecuronium groups, respectively. Onset time was significantly shorter after vecuronium, 158 +/- 34 s vs. 200 +/- 50 s, respectively. Recovery index was significantly shorter after cisatracurium, 19.5 +/- 7.5 s vs. 33.7 +/- 18.6 s (P < 0.05). Clinical duration and spontaneous recovery time were similar in both groups as well as haemodynamic variables. Conclusions: In elderly patients, vecuronium has a faster onset time while cisatracurium has a shorter recovery index under sevoflurane-remifentanil anaesthesia.
  • No Thumbnail Available
    Item
    Evaluation of piroxicam-β-cyclodextrin as a preemptive analgesic in functional endoscopic sinus surgery
    Keles, GT; Topçu, I; Ekici, Z; Yentür, A
    The preemptive analgesic efficacy and adverse effects of preoperatively administered piroxicam-beta-cyclodextrin for post-endoscopic sinus surgery pain was determined in a prospective, double-blind, randomized, clinical study. Seventy-five American Society of Anesthesiologists status I-II patients, aged 18-65 years, were divided into three groups with similar demographic characteristics: group 1 received 20 mg piroxicam-beta-cyclodextrin, group 2 received 40 mg piroxicam-beta-cyclodextrin and group 3 received placebo orally before induction of general anesthesia. A blinded observer recorded the incidence and severity of pain at admission to the post-anesthesia care unit (PACU), at 15, 30, and 45 min in the PACU, and 1, 2, 4, 6, and 24 h postoperatively. All patients received patient-controlled morphine analgesia during the postoperative period and consumption was recorded for 24 h. During the PACU period, mean visual analogue scale values were significantly lower in groups 1 and 2 compared to group 3 (P < 0.05). During the postoperative period, morphine consumption was 3.03 +/- 2.54, 2.7 +/- 2.8, and 5.56 +/- 3.12 mg for each group, respectively (P < 0.05). As a side effect, bleeding was observed in groups 1 and 3, nausea and vomiting in all groups, and edema only in group 3. However, no significant differences were detected in any of the parameters analyzed, which also included epigastric pain, constipation/diarrhea and headache. Similar hematological test results were obtained for all groups. Preemptive administration of piroxicam-beta-cyclodextrin effectively reduced analgesic consumption, and 40 mg of the drug was more effective than 20 mg piroxicam-beta-cyclodextrin without side effects during the postoperative period.
  • No Thumbnail Available
    Item
    Comparison of thoracic epidural and paravertebral analgesia for postoperative pain control after thoracotomy
    Öztürk, T; Topcu, I; Yaldiz, S; Özbakkaloglu, A; Asik, K; Yentür, A
    Objectives: In the present randomized, controlled, and blinded study, the effects of thoracic paravertebral analgesia were compared to those of epidural analgesia on postoperative pain, hemodynamics, and respiration rate following thoracotomy. Methods: Patients scheduled for elective open-lung surgery were included. One hour prior to surgery, thoracic epidural catheters were used in 18 patients (ED group), and ultrasound-guided paravertebral catheters were used in 17 patients (PV group). Standard general anesthesia was administered to all. Following anesthesia, postoperative analgesia of levobupivacaine 0.1% and morphine 0.1 mg mL(-1) was administered via catheter. Patient-controlled analgesia (PCA) regime with tramadol was initiated, and amounts of local anesthetics and tramadol demanded and delivered within the first 24 hours were recorded. Visual analog scale (VAS) pain score, sedation score, side effects, and vital signs (blood pressure, heart rate, and respiratory rate) were assessed by an observer blinded to patient data at 1, 2, 3, 4, 6, 12, and 24 hours. Results: Differences in PCA bolus demands and deliveries were not statistically significant between the PV group (26.8 +/- 1.3 and 33.1 +/- 4.5) and the ED group (25.1 +/- 3.5 and 32.5 +/- 4.3). Neither were differences in VAS scores statistically significant (p = 0.3). Rates of sedation among the PV group were lower than those of the ED group at 1 hour (p = 0.001). Five patients in the ED (% 28) group experienced hypotension (p = 0.02). Conclusion: Paravertebral block with levobupivacaine 0.1% and morphine 0.1 mg mL(-1) may be an alternative form of pain relief following thoracotomy.