Ahmet Eroglu

The biosorption of lead(II), cadmium(II) and nickel(II) ions from aqueous solution by Spirulina platensis was studied as a function of time, concentration, temperature, repetitive reactivity, and ionic competition. The kinetic results obeyed well the pseudo second-order model. Freundlich, Dubinin Radushkevich and Temkin isotherm models were applied in describing the equilibrium partition of the ions. Freundlich isotherm was applied to describe

The aim of this study was to compare the haemodynamic and anaesthetic effects of 12 mg ropivacaine and 8 mg bupivacaine, both with 20 microg fentanyl, in spinal anaesthesia for major orthopaedic surgery in geriatric patients. Sixty American Society of Anesthesiologists (ASA) II-III patients scheduled for hip arthroplasty were randomly assigned to receive an intrathecal injection of either 12 mg ropivacaine with 20 microg fentanyl (group R, aged 70 +/- 7 years, range 67-89) or 8 mg hyperbaric bupivacaine with 20 microg fentanyl (group B, aged 69 +/- 6 years, range 66-92). Motor and sensory block, haemodynamics and side effects were recorded. Mean levels of sensory block were similar, but the onset time of sensory block in group B (2.52 +/- 0.69 min) was shorter than that in group R (3.17-0.72 min); the difference was statistically significant (p < 0.01), and the number of patients who had motor Bromage scale 3 in group B (24) was greater than in group R (16). The difference was also statistically significant (p < 0.05). Systolic and diastolic arterial pressures (SAP, DAP) and heart rate (HR) decreased after the block in both groups. SAP (after the 60th and 120th min of block), DAP (all measurement times), and HR (after the 20th, 25th and 30th min of block) were lower in group B than in group R. The data showed that 12 mg of ropivacaine and 8 mg of bupivacaine with 20 microg fentanyl in spinal anaesthesia can provide sufficient motor and sensory block for major orthopaedic surgery in geriatric patients. However, ropivacaine caused less motor block and haemodynamic side effects than bupivacaine during the procedure.

Effective pain control is important after an outpatient arthroscopic knee surgery to permit early discharge and improve outcome. The aim of this study was to compare intraarticular morphine and bupivacaine with placebo for postoperative pain control and outpatient status after a knee arthroscopic surgery under a low dose of spinal anaesthesia. After obtaining the ethic committee's approval and written informed consents from 60 adult outpatients undergoing knee arthroscopy, patients were enrolled in this prospective, randomized, double-blinded, placebo-controlled clinical study. All patients received spinal anaesthesia with 1.4 ml of hyperbaric bupivacaine 0.5%. Patients were randomly divided into three groups as morphine (group M, n =20), bupivacaine (group B, n = 20), and placebo (group C, n = 20). After the surgical procedure, patients received one of the following solutions intraarticularly in a double-blinded randomized manner: 5 mg morphine in 20 ml saline, 20 ml 0.25% bupivacaine, or 20 ml saline. Postoperative pain was assessed using a 10-cm visual analogue scale (VAS). Patient characteristics, hemodynamic values, sensory and motor blocks, VAS values, rescue analgesics, discharge time, and patient satisfaction were recorded. There were no significant differences in patient characteristics, surgery and tourniquet time, hemodynamic values, and sensory and motor blocks. The VAS values at 30, 60, and 90 min were similar among the three groups. The VAS values at rest and during move were higher in group C than in groups M and B at 120, 150, 180 min, and 24 h (P < 0.001). There was no difference in VAS values between the groups M and B. Rescue analgesics used and discharge time were significantly different in the placebo group when compared to groups M and B (P < 0.001). Side effects were similar among the groups. Patient satisfaction scores were high in the groups M and B. Administration of 5 mg morphine and 20 ml of 0.25% bupivacaine intraarticularly provides better pain relief and shorter discharge time without increasing the side effects than placebo for an outpatient arthroscopic knee surgery performed under a low dose of spinal anaesthesia.

A novel sorbent was prepared by the functionalization of an inorganic support material, MCM-41, with N-methylglucamine for the uptake of boron from aqueous solutions prior to its determination by inductively coupled plasma optical emission spectrometry (ICP–OES). Characterization of the newly synthesized material was performed using BET, XRD, TEM, SEM and DRIFTS techniques, in addition to its C and N elemental

Adsorption behavior of Zn2+ and Pb2+ ions on kaolinite and clinoptilolite, originating from natural resources, was studied as a function of contact time and concentration. Zn2+ and Pb2+ ions are quickly adsorbed on both minerals and the uptake of the latter is more favored. The uptake of both ions was then examined on kaolinite–MgCO3 and clinoptilolite–MgCO3 mixtures over a metal

Our aim in this study was to investigate the effect of levobupivacaine and a levobupivacaine + tramadol combination on postoperative analgesia in intraoperative nerve block under standard general anesthetic. Forty-five patients undergoing outpatient nasal surgery under general anesthesia were randomized into 3 groups. Group L: 0.25% levobupivacaine, group T: 0.25% levobupivacaine and 50 mg tramadol, group S: normal saline solution; 2 mL of each being injected into the infraorbital foramen. Intraoperative hemodynamic changes were recorded. Verbal numeric rating scale (NRS) values were checked at 30 minutes and 1, 2, 8, and 12 hours postoperatively, and the need for rescue analgesic treatment in the first 12 hours of all patients was recorded. Also antiemetic drug requirement and side effects (nausea, edema, erythema, hematoma, and sedation) were recorded. At 30 minutes and 1 hour postoperatively, NRS pain scores were lower in group T than in group S (P < 0.0001, P = 0.01, respectively). NRS pain score was lower in group T compared with group L at 1 hour postoperatively (P = 0.01). Effective analgesia time (sec) in the control group (142.67 ± 77.31) was shorter than levobupivacaine (240 ± 96.39) and levobupivacaine added to tramadol groups (277 ± 11.60) (P < 0.05). Additional analgesic requirement in the control group was higher than the other 2 groups in early postoperative period (P < 0.05). Bilateral infraorbital nerve block with 0.25% levobupivacaine is an effective, reliable, and simple technique in the treatment of postoperative pain in nasal surgery. In addition, the addition of tramadol as an adjuvant to local anesthetics in this technique is safe.

Background and Purpose: Intensive care units are special treatment units with high-tech equipment developed for the treatment and follow up of life-threatening organ failure seen in the course of both chronic and acute illnesses. These units have the highest mortality rates among hospital sections. To evaluate the factors affecting mortality in patients treated in ICUs and to determine the measures needed to reduce mortality rates.

Congenital insensitivity to pain (CIP) is a rarely syndrome and is characterized by unresponsiveness to painful stimulants,
anhydrous, mental retardation, and recurring feverish episodes. In this case report we presented our anesthesia management
in a patient with congenital insensitivity to pain for lower extremity surgery due to osteomyelitis.