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Adding dexmedetomidine to lidocaine for intravenous regional anesthesia
(Lippincott Williams & Wilkins, 2004) Memis, D; Turan, A; Karamanlioglu, B; Pamukçu, Z; Kurt, I
Dexmedetomidine is approximately 8 times more selective toward the alpha-2-adrenoceptors than clonidine. It decreases anesthetic requirements by up to 90% and induces analgesia in patients. We designed this study to evaluate the effect of dexmedetomidine when added to lidocaine in IV regional anesthesia (IVRA). We investigated onset and duration of sensory and motor blocks, the quality of the anesthesia, intraoperative-postoperative hemodynamic variables, and intraoperative-postoperative pain and sedation. Thirty patients undergoing hand surgery were randomly assigned to 2 groups to receive IVRA. They received 40 mL of 0.5% lidocaine and either 1 mL of isotonic saline (group L, n = 15) or 0.5 mug/kg dexmedetomidine (group LD, n = 15). Sensory and motor block onset and recovery times and anesthesia quality were noted. Before and after the tourniquet application at 5, 10, 15, 20, and 40 min, hemodynamic variables, tourniquet pain and sedation, and analgesic use were recorded. After the tourniquet deflation, at 30 min, and 2, 4, 6, 12, and 24 h, hemodynamic variables, pain and sedation values, time to first analgesic requirement, analgesic use, and side effects were noted. Shortened sensory and motor block onset times, prolonged sensory and motor block recovery times, prolonged tolerance for the tourniquet, and improved quality of anesthesia were found in group LD. Visual analog scale scores were significantly less in group LD in the intraoperative period and 30 min, and 2, 4, and 6 h after tourniquet release. Intra-postoperative analgesic requirements were significantly less in group LD. Time to first analgesic requirements was significantly longer in group LD in the postoperative period. We conclude that the addition of 0.5 mug/kg dexmedetomidine to lidocaine for IVRA improves quality of anesthesia and perioperative analgesia without causing side effects.
Alternative application site of transdermal nitroglycerin and the reduction of pain on propofol injection
(Greenwich Medical Media Ltd, 2003) Turan, A; Karamanlioglu, B; Memis, D; Pamukçu, Z
[Abstract Not Available]
Analgesic effects of gabapentin after spinal surgery
(Lippincott Williams & Wilkins, 2004) Turan, A; Karamanlioglu, B; Memis, D; Hamamcioglu, MK; Tükenmez, B; Pamukçu, Z; Kurt, I
Background: A combination of opioid and nonopioid analgesic drugs may improve the quality of postoperative analgesia as well as reduce opioid requirements and their associated side effects. Studies have shown synergism between gabapentin and morphine in animal and human experiments and in the treatment of incisional pain. Therefore, the authors investigated, in a randomized, placebo-controlled, double-blind study, the effects of gabapentin on acute postoperative pain and morphine consumption in patients undergoing spinal surgery. Methods: After standard premedication, 25 patients in the control group received oral placebo, and 25 patients in the gabapentin group received 1,200 mg of gabapentin, 1 h before surgery in a randomized fashion. Anesthesia was induced with propofol and cisatracurium. and was maintained with sevoflurane and remifentanil. The total intraoperative remifentanil consumption by each patient was noted. All patients postoperatively received patient-controlled analgesia with morphine (1 mg/ml) with an incremental dose of 2 mg, a lockout interval of 10 min, and a 4-h limit of 40 mg. The incremental dose was increased to 3 mg, and the 4-h limit to 50 mg, if analgesia was inadequate after I h. Patients were questioned for the first 1 h in the PACU and were later evaluated in the ward at 1, 2, 4, 6, 12, and 24 h. Pain scores, heart rate, oxygen saturation measured by pulse oximetry, mean blood pressure, respiratory rate, sedation, morphine use, and total dose of morphine were recorded. Results: Overall, pain scores at 1, 2, and 4 It were significantly lower in the gabapentin group when compared with the placebo group. Total morphine consumption in the gabapentin group was 16.3 +/- 8.9 mg (mean +/- SD) versus 42.8 +/- 10.9 mg in the placebo patients. The incidence of vomiting and urinary retention was significantly (P < 0.05) higher in the placebo group, but there was no difference in incidence of other adverse effects between the groups. Conclusions: Preoperative oral gabapentin decreased pain scores in the early postoperative period and postoperative morphine consumption in spinal surgery patients while decreasing some morphine-associated side effects.
The analgesic effects of gabapentin after total abdominal hysterectomy
(Lippincott Williams & Wilkins, 2004) Turan, A; Karamanlioglu, B; Memis, D; Usar, P; Pamukçu, Z; Türe, M
We investigated, in a randomized, placebo-controlled, double-blind study, the efficacy and safety of gabapentin on pain after abdominal hysterectomy and on tramadol consumption in patients. The 50 patients were randomized to receive either oral placebo or gabapentin 1200 mg 1 h before surgery. Anesthesia was induced with propofol and maintained with sevoflurane in 50% N2O/O-2 with a fresh gas flow of 2 L/min (50% N2O in O-2) and fentanyl (2 mug/kg). All patients received patient-controlled analgesia with tramadol with a 50 mg initial loading dose, 20 mg incremental dose, 10-min lockout interval, and 4-h limit of 300 mg. The incremental dose was increased to 30 mg if analgesia was inadequate after 1 h. Patients were studied at 4,8,12,16, 20, and 24 h for visual analog (VAS) pain scores, heart rate, peripheral oxygen saturation, mean arterial blood pressure, respiratory rate, sedation, and tramadol consumption. The VAS scores in the sitting and supine position at 1, 4, 8, 12,16, and 20 h were significantly lower in the gabapentin group when compared with the placebo group up to 20 h after surgery. The tramadol consumption at 12, 16, 20, and 24 h and total tramadol consumption were significantly less in the gabapentin group when compared with placebo group. Sedation scores were similar at all the measured times. There were no differences between groups in adverse effects. Preoperative oral gabapentin decreased pain scores and postoperative tramadol consumption in patients after abdominal hysterectomy.
The analgesic effects of gabapentin in monitored anesthesia care for ear-nose-throat surgery
(Lippincott Williams & Wilkins, 2004) Turan, A; Memis, D; Karamanlioglu, B; Yagiz, R; Pamukçu, Z; Yavuz, E
We investigated the efficacy and safety of gabapentin in rhinoplasty or endoscopic sinus surgery patients. Patients received either oral placebo or gabapentin 1200 mg 1 h before surgery. After standard premedication, 25 patients in each group received propofol, fentanyl, and local anesthesia at the operative site. Sedation was maintained by a continuous infusion of propofol adjusted according to the Ramsay scale. Sedation and pain scores were obtained at 5, 15, 30, 45, and 60 min during surgery and 30 min and 2,4,6,8, 12, 16, 20, and 24 h after the procedure. Diclofenac 75 mg IM was administered as a rescue analgesic. Postoperative pain scores and intraoperative pain scores at 45 and 60 min were significantly lower in the gabapentin group. Fentanyl (122 +/- 40 mug versus 148 +/- 42 mug; P < 0.05) and diclofenac (33 +/- 53 mg versus 111 +/- 92 mg; P < 0.001) consumption was smaller and the time to first analgesic request (18 +/- 9 h versus 9 +/- 7 h; P < 0.001) was longer in the gabapentin group. A more frequent incidence of dizziness was found in the gabapentin (versus placebo) group (24% versus 4%, respectively). We conclude that gabapentin provided a significant analgesic benefit for intraoperative and postoperative pain relief in patients undergoing ambulatory rhinoplasty or endoscopic sinus surgery; however, dizziness may be a handicap for ambulatory use.
Caudal neostigmine for postoperative analgesia in paediatric surgery
(Blackwell Publishing Ltd, 2003) Memis, D; Turan, A; Karamanlioglu, B; Kaya, G; Süt, N; Pamukçu, Z
Background: This study was conducted to evaluate analgesia and side-effects of caudal neostigmine coadministered with bupivacaine in paediatric surgery. Methods: We studied children, aged 1-5 years, undergoing elective surgery (inguinal hernia and hypospadias). After standard induction of anaesthesia, caudal anaesthesia was performed. Group 1 received 0.25% bupivacaine 0.5 ml.kg(-1) and Group 2 received 0.25% bupivacaine 0.5 ml.kg(-1) with 1 mug.kg(-1) neostigmine via the caudal route. Heart rate, mean arterial pressure, peripheral oxygen saturation were recorded before induction, after induction but before caudal anaesthesia, and then every 5 min after caudal anaesthesia. Haemodynamic, Toddler, Preschooler, Postoperative Pain Scale (TPPPS) pain score and sedation score values were recorded 30 min after extubation and at hours 2, 4, 6, 12 and 24. A pain score >3/10 resulted in administration of rectal paracetamol. The duration of postoperative analgesia was defined as the time between caudal drug injection and the first rectal paracetamol administration. Results: There were no differences between the groups in demographic and haemodynamic date, duration of surgery and anaesthesia, time to extubation or sedation scores. The duration of postoperative pain relief did not differ between the two groups; 15.40 +/- 10.97 h for group 1 vs. 15.45 +/- 10.99 h for group 2 (P > 0.05). The incidence of nausea (three patients in group 2 and one patient in group 1) was not statistically significant. No other side-effects were seen. Conclusions: We found that a single caudal injection of 1 mug.kg(-1) neostigmine mixed with bupivacaine offers no significant advantage over bupivacaine alone for postoperative pain relief in children undergoing genitourinary surgery.
Comparison of sufentanil with sufentanil plus magnesium sulphate for sedation in the intensive care unit using bispectral index
(Bmc, 2003) Memis, D; Turan, A; Karamanlioglu, B; Oguzhan, N; Pamukçu, Z
Introduction In intensive care unit patients we assessed, using bispectral index (BIS) monitoring, whether the addition of magnesium sulphate infusion could decrease the sufentanil infusion required to maintain sedation. Patients and methods A total of 30 adult patients who were expected to require mechanical ventilation for 6 hours in the intensive care unit were randomly assigned to receive either sufentanil infusion or sufentanil plus magnesium infusion. We monitored BIS levels continously. BIS levels in the range 61-88 are required to maintain a state of sedation, and in both groups BIS levels were kept within this range by increasing or decreasing the sufentanil infusion. Hourly consumption of sufentanil was monitored. Cardiovascular, respiratory and biochemical data were recorded. Results There was no significant difference between the groups with respect to cardiovascular, respiratory and biochemical parameters. Magnesium infusion, when added to sufentanil infusion, decreased the consumption of sufentanil at all times accept during the first hour (P < 0.001). There was no significant difference in BIS values between the groups (P > 0.05). Conclusion This is the first clinical study to demonstrate that magnesium sulphate infusion decreases sufentanil requirements. Because of the limited number of patients included and the short period of observation, our findings must be confirmed by larger clinical trials of magnesium infusion titrated to achieve prespecified levels of sedation. Furthermore, randomized clinical studies are needed to determine the effects of magnesium infusion on opioids.
Effect of aminophylline on bispectral index
(Wiley, 2004) Turan, A; Memis, D; Karamanlioglu, B; Pamukçu, Z; Süt, N
Background: The aim of the present study was to investigate the effects of aminophylline on BIS as well as clinical recovery in patients anesthetized with sevoflurane. Methods: Sixty patients with status of ASA I-II scheduled for elective surgery were enrolled in this study. Anesthesia was induced by 2 mg kg(-1) of propofol and 0.5 mg kg(-1) of atracurium, maintained with 1:1 ratio of oxygen and nitrous oxide and 2-2.5% sevoflurane, keeping BIS values at 50 +/- 5. During the last 30 min of the operation no muscle relaxant was given and anesthesia was continued without decreasing anesthetic concentration. After sevoflurane discontinuation, saline was given to Group P, and 5 mg kg(-1) of aminophylline was given to Group A. Bispectral index values, heart rate, blood pressure and oxygen saturation were determined in all the patients before and every min after injection of the test drug for 15 min. The following variables were measured in both groups: eye opening, extubation time, response to command, Aldrete scores, and performing three simple arithmetic calculations. Results: Between groups there was no statistically significant difference in mean arterial blood pressure, SPO2 and anesthesia time. Heart rate was found to be statistically higher (P < 0.001) at 2 to 6 min in Group A when compared with group P. Eye opening, verbal response, extubation and arithmetic calculation times were significantly shorter (P < 0.001) in Group A. Bispectral index scores were significantly higher in Group A at 1 to 12 min after aminophylline injection when compared with placebo (P < 0.001). Conclusion: Recovery from sevoflurane anesthesia and BIS scores are improved in early period when aminophylline is given at emerging from anesthesia.
Effect of aminophylline on recovery from sevoflurane anaesthesia
(Lippincott Williams & Wilkins, 2002) Turan, A; Memis, D; Karamanlioglu, B; Çolak, A; Pamukçu, Z; Turan, N
Background and objective: In this randomized, double-blind study, we aimed to investigate the effect of aminophylline on recovery from sevoflurane. Methods: One-hundred ASA I-II patients scheduled for elective surgery were randomly divided into two groups receiving either NaCl 0.9% (Group 1, n = 50) or aminophylline 5 mg kg(-1) (Group 2, n = 50). All patients were premedicated with atropine 0.01 mg kg(-1) and midazolam 0.06 mg kg(-1) intramuscularly. Anaesthesia was induced with propofol 2 mg kg(-1) for muscle relaxation, and atracurium 0.5 mg kg(-1) was maintained with sevoflurane 2% in 50% oxygen and nitrous oxide. Further atracurium (0.1 mg kg(-1)) was given when needed. Aminophylline or saline was given after sevoflurane was discontinued. Heart rate, mean arterial pressure, peripheral oxygen saturation, the duration of anaesthesia and recovery times (eye opening, verbal response, extubation and successful performance of arithmetical calculations) were recorded. Results: There were no statistically significant differences in mean arterial pressure, peripheral oxygen saturation and anaesthesia time between the two groups. Heart rate increased significantly (P < 0.05) after aminophylline and was also higher than in the placebo group. Recovery times were significantly shorter (P < 0.001) in the patients receiving aminophylline. Conclusions: Aminophylline speeded recovery after sevoflurane anaesthesia and it may have some advantage in anaesthesia practice for patients.
The effect of intravenous pantoprazole and ranitidine for improving preoperative gastric fluid properties in adults undergoing elective surgery
(Lippincott Williams & Wilkins, 2003) Memis, D; Turan, A; Karamanlioglu, B; Saral, P; Türe, M; Pamukçu, Z
We studied pantoprazole, a new potent and fast-acting proton pump inhibitor. Its effects on preoperative gastric fluid volume and pH have not yet been determined. In this randomized, controlled trial, we examined the effects of preoperative IV pantoprazole or ranitidine on gastric pH and volume. Ninety patients (ASA status I and II, scheduled for elective surgery) were studied. One hour before surgery, patients in Group I (n = 30) were given IV saline 5 mL, those in Group II (n = 30) were given 40 mg of pantoprazole IV, and those in Group III (n = 30) were given 50 mg of ranitidine IV. A nasogastric tube was inserted immediately after anesthesia induction. Gastric contents were aspirated, and volume and pH were recorded. The pH values determined in Group I were 3.73 +/- 0.82; in Group II, they were 5.30 +/- 1.84; and in Group III, they were 4.80 +/- 1.40. There was no statistical difference between Groups 2 and 3, but there was a significant difference between Group I and Groups 2 and 3 (P < 0.0005). The volume of the gastric contents was 28.67 +/- 10.98 mL in Group I, 15.20 +/- 15.52 mL in Group II, and 7.77 +/- 11.17 mL in Group III. There was no statistical difference between Groups 2 and 3, but there was a statistically significant difference between Group I and Groups 2 and 3 (P < 0.0005). The proportion of patients considered at risk of significant lung injury should aspiration occur was 20% of Group I, 10% of Group II, and 3.3% of Group III. When statistically evaluated, there was no difference among groups. We concluded that the administration of IV pantoprazole and ranitidine 1 h before surgery is effective in reducing gastric pH and volume.
Effect of oral gabapentin on postoperative epidural analgesia
(Elsevier Sci Ltd, 2006) Turan, A; Kaya, G; Karamanlioglu, B; Pamukçu, Z; Apfel, CC
Background. Gabapentin has been used successfully as a non-opioid analgesic adjuvant for postoperative pain management. We hypothesized that gabapentin might be a useful adjuvant for postoperative analgesia provided with patient-controlled epidural analgesia (PCEA). Methods. Forty patients undergoing lower extremity surgery procedures were randomly assigned to receive (i) placebo capsules (control) or (ii) gabapentin (1.2 g day(-1)) before and for 2 days after surgery. Anaesthetic technique was standardized. Postoperative assessments included verbal rating scale scoring for pain and sedation, PCEA usage, quality of recovery assessment, times of GI function recovery, and patient satisfaction scoring for pain management. Results. Pain scores at 1, 4, 8, 12, and 16 h (P < 0.001), PCEA bolus requirements (n) at 24 [21 (3), 14 (2)], 48 [15 (4), 10 (3)] and 72 [8 (5), 2 (3)] (P < 0.05) and paracetamol (mg) consumption [700 (523), 350 (400)]; P < 0.05), were significantly lower in the gabapentin-treated patients than in the control group. Patient satisfaction with postoperative pain management at 24 h was better in gabapentin-treated patients [85.5 (7.5), 66.5 (15)]; P < 0.001). Gabapentin-treated patients had less motor block when compared with control group. Times of return of bowel function, hospitalization, and resumption of dietary intake were similar in the groups. However, the incidence of dizziness was higher in the gabapentin group (35% vs 5%; P < 0.05). Conclusions. Oral gabapentin (1.2 g day(-1)) as an adjunct to epidural analgesia decreased pain and analgesic consumption. Despite an increased incidence of dizziness it also increased patient satisfaction.
Effects of lornoxicam on the physiology of severe sepsis
(Bmc, 2004) Memis, D; Karamanlioglu, B; Turan, A; Koyuncu, O; Pamukçu, Z
Introduction The purpose of the present study was to evaluate the effects of intravenous lornoxicam on haemodynamic and biochemical parameters, serum cytokine levels and patient outcomes in severe sepsis. Methods A total of 40 patients with severe sepsis were included, and were randomly assigned ( 20 per group) to receive either lornoxicam ( 8 mg administered intravenously every 12 hours for six doses) or placebo. For both groups the following were recorded: haemodynamic parameters ( heart rate, mean arterial pressure), nasopharyngeal body temperature, arterial blood gas changes ( pH, partial oxygen tension, partial carbon dioxide tension), plasma cytokine levels (IL-1beta, IL-2 receptor, IL-6, IL-8, tumour necrosis factor-alpha), biochemical parameters ( lactate, leucocytes, trombocytes, creatinine, total bilirubin, serum glutamate oxalate transaminase), length of stay in the intensive care unit, duration of mechanical ventilation and mortality. All measurements were obtained at baseline ( before the start of the study) and at 24, 48 and 72 hours from the start of lornoxicam/placebo administration. Results No significant differences were found between the intravenous lornoxicam and placebo groups in major cytokines, duration of ventilation and length of intensive care unit stay, and inspired fractional oxygen/arterial oxygen tension ratio ( P > 0.05). Conclusion In these patients with severe sepsis, we found intravenous lornoxicam to exert no effect on haemodynamic and biochemical parameters, cytokine levels, or patient outcomes. Because of the small number of patients included in the study and the short period of observation, these findings require confirmation by larger clinical trials of intravenous lornoxicam, administered in a dose titrated manner.
Gabapentin
(Lippincott Williams & Wilkins, 2006) Turan, A; White, PF; Karamanlioglu, B; Memis, D; Tasdogan, M; Pamukçu, Z; Yavuz, E
The cyclooxygenase-2 inhibitor, rofecoxib, was a popular analgesic adjuvant for improving perioperative pain management. We designed this placebo-controlled study to test the hypothesis that gabapentin could produce similar reductions in postoperative pain and opioid analgesic usage, thereby improving the recovery process. One hundred patients undergoing abdominal hysterectomy procedures were randomly assigned to one of four treatment groups: 1) control group received placebo capsules and pills before and for 2 days after surgery, 2) rofecoxib group received 50 mg/d PO and placebo capsules before and after surgery and, 3) gabapentin group received 1.2 g/d PO and placebo pills before and after surgery, and 4) combination group received rofecoxib 50 mg/d and gabapentin 1.2 g/d PO before and after surgery. The anesthetic technique was standardized and the postoperative assessments included verbal rating scales for pain and sedation, IV morphine usage, quality of recovery assessment, recovery of bowel function, resumption of normal activities, and patient satisfaction with their pain management. Postoperative pain scores were significantly reduced in all three analgesic treatment groups (versus control group). Compared with the control group, patient-controlled analgesia morphine usage was also significantly reduced in the 3 analgesic treatment groups at 1, 8,24, and 30 h after surgery. Total PCA morphine usage was decreased by 43%, 24%, and 50% in groups 2,3, and 4, respectively, compared with group 1. Oral analgesic consumption was also smaller in groups 2 and 4 when compared with the control group. The opioid-sparing effects of rofecoxib and gabapentin lead to a faster recovery of bowel function. Discharge eligibility scores in groups 2 and 4 were improved at 24 h when compared with group 1, and patient satisfaction with postoperative pain management was significantly higher at 24 h in all 3 analgesic treatment groups. At the 72 h followup, all of the patients in group 4 were completely satisfied with their pain management compared with only 32%, 64%, and 72% in groups 1, 2, and 3, respectively. Gabapentin (1.2 g/d PO) appears to be an acceptable alternative to rofecoxib (50 mg/d PO) for short-term use as an adjuvant to opioid analgesics in patients undergoing lower abdominal surgery.
Glutamine and chronic obstructive pulmonary disease
(Cambridge Univ Press, 2006) Memis, D; Turan, A; Karamanlioglu, B; Koyuncu, O; Pamukçu, Z
[Abstract Not Available]
The influence of N-acetyl-L-cystein infusion on cytokine levels and gastric intramucosal pH during severe sepsis
(Biomed Central Ltd, 2004) Emet, S; Memis, D; Pamukçu, Z
Introduction The purpose of the present study was to evaluate the effects of continuously infused N-acetyl-L-cystein (NAC) on serum cytokine levels and gastric intramucosal pH in humans suffering from severe sepsis. Methods Fifty-three patients were included in the study. In the NAC group (n = 27), after an initial intravenous bolus of NAC (150 mg/kg over 5 min), a continuous intravenous infusion of 12.5 mg/kg per hour was given for 6 hours. Patients in the control group (n = 26) were administered dextrose (5% solution) at the same dosage. We recorded the following: haemodynamic parameters, nasopharyngeal temperature, arterial blood gas changes, plasma cytokine levels, biochemical parameters, intramucosal pH, length of stay in the intensive care unit, duration of of mechanical ventilation and mortality. All measurements were taken at baseline (15 min before the start of the study) and were repeated immediately after the bolus infusion, and at 24 and 48 hours after initiation of the continuous NAC infusion. Results No differences were found between groups in levels of the major cytokines, duration of ventilation and intensive care unit stay, gastric intramucosal pH and arterial oxygen tension/inspired fractional oxygen ratio (P > 0.05). Conclusion We found that NAC infusion at the doses given did not affect cytokine levels, outcomes, or gastric intramucosal pH in patients with severe sepsis. Because of the limited number of patients included in the study and the short period of observation, our findings need confirmation in larger clinical trials of NAC infused in a dose-titrated manner. However, our results do not support the use of NAC in patients with severe sepsis.
Intravenous regional anesthesia using lidocaine and magnesium
(Lippincott Williams & Wilkins, 2005) Turan, A; Memis, D; Karamanlioglu, B; Güler, T; Pamukçu, Z
We conducted this study to evaluate the effects of magnesium, when added to lidocaine for IV regional anesthesia (IVRA), on tourniquet pain. Thirty patients undergoing elective hand surgery during IVRA were randomly assigned to two groups. IVRA was achieved with 10 mL of saline plus 3 mg/kg lidocaine 0.5% diluted with saline to a total of 40 mL in group C or with 10 mL of 15% magnesium sulfate (12.4 mmol) plus 3 mg/kg lidocaine 0.5% diluted with saline to a total of 40 mL in group M. Injection pain, sensory and motor block onset and recovery time, tourniquet pain, and anesthesia quality were noted. Patients were instructed to receive 75 mg of IM diclofenac when the visual analog scale (VAS) score was > 4, and analgesic requirements were recorded. Sensory and motor block onset times were shorter and recovery times were prolonged in group M (P < 0.05). VAS scores of tourniquet pain were lower in group M at 15, 20, 30, 40, and 50 min (P < 0.001). Anesthesia quality, as determined by the anesthesiologist and surgeon, was better in group M (P < 0.05). Time to the first postoperative analgesic request in group C was 95 +/- 29 min and in group M was 155 38 min (P < 0.05). Postoperative VAS scores were higher for the first postoperative 6 h in group C (P < 0.05). Diclofenac consumption was significantly less in group M (50 +/- 35 mg) when compared with group C (130 + 55 mg) (P < 0.05). We conclude that magnesium as an adjunct to lidocaine improves the quality of anesthesia and analgesia in IVRA.
Intravenous regional anesthesia using prilocaine and neostigmine
(Lippincott Williams & Wilkins, 2002) Turan, A; Karamanlioglu, B; Memis, D; Kaya, G; Pamukçu, Z
Neostigmine has been added to local anesthetics for central and peripheral nerve blocks resulting in prolonged, increased anesthesia and improved analgesia. We conducted this study to evaluate the effects of neostigmine when added to prilocaine for IV regional anesthesia (IVRA). Thirty patients undergoing hand surgery were randomly assigned to two groups to receive IVRA. The control group received 1 mL of saline plus 3 mg/kg of prilocaine diluted with saline to a total dose of 40 mL; the study group received 0.5 mg of neostigmine plus 3 mg/kg of prilocaine diluted with saline to a total dose of 40 mL. Sensory and motor block onset and recovery, anesthesia quality determined by an anesthesiologist, anesthesia quality determined by a surgeon, and dryness of the operative field were noted. Heart rate, mean arterial blood pressure, and oxygen saturation values were noted at 1, 5, 10, 20, and 40 min before surgery and after tourniquet release. Time to first analgesic requirement was also noted. Shortened sensory and motor block onset times, prolonged sensory and motor block recovery times, improved quality of anesthesia, and prolonged time to first analgesic requirement were found in the neostigmine group. We conclude that neostigmine as an adjunct to prilocaine improves quality of anesthesia and is beneficial in IVRA.
Predictive value of thyroid hormones on the first day in adult respiratory distress syndrome patients admitted to ICU
(K Faisal Spec Hosp Res Centre, 2005) Türe, M; Memis, D; Kurt, I; Pamukçu, Z
BACKGROUND: Thyroid hormone dysfunction could affect outcome and increase mortality in critical illness. Therefore, in a prospective, observational study we analyzed and compared the prognostic accuracy of free tri-iodothyronine (M), free thyroxine (M), thyroid-stimulating hormone (TSH), along with the APACHE II and SOFA scoring systems in predicting intensive care unit (ICU) mortality in critically ill patients. PATIENTS AND METHODS: Physiology scores were calculated for the first 24 hours after ICU admission in 206 patients with acute respiratory distress syndrome. APACHE 11 and SOFA scores were employed to determine the initial severity of illness. Thyroid hormones were measured within the first 24 hours. Logistic regression models were created for APACHE 11 scores, SOFA scores, and thyroid hormone levels. The models predicted high- and low-risk subgroups. Models that showed a good fit were stratified by Kaplan-Meier survival curves. RESULTS:There were 98 (47.6%) survivors and 108 (52.4%) non-survivors. The survivors had a lower APACHE 11 score (11.50 vs 15.82, P < 0.0005), a lower SOFA score (6.06 vs 9.42, P < 0.0005), a younger age (57 vs 70 years, P=4.008), a shorter ICU stay (13 vs 16 days, P=4.012), and a higher fT3 level (2.18 vs 1.72 pg/mL, P=4.002) than non-survivors. ICU survival was most closely predicted by a model that included age and fT3 and a model that included APACHE 11 and APACHE II*sex. CONCLUSION: In critically ill patients, serum fT3 concentrations markedly decreased after ICU admission among non-survivors. According to our findings, fT3 levels might have additive discriminatory power to age, SOFA and APACHE 11 scores in predicting short-term mortality in ARDS patients admitted to ICU.
The prevention of pain from injection of rocuronium by ondansetron, lidocaine, tramadol, and fentanyl
(Lippincott Williams & Wilkins, 2002) Memis, D; Turan, A; Karamanlioglu, B; Süt, N; Pamukçu, Z
We compared the efficacy of ondansetron, lidocame, tramadol, and fentanyl in minimizing pain caused by the injection of rocuronium in 250 patients. After tourniquet application on the forearm, the patients were given saline (3 mL) (Group 1, n = 50), ondansetron (4 mg) (Group 2, n = 50), lidocaine (30 mg) (Group 3, n = 50), tramadol (50 mg) (Group 4, n = 50), or fentanyl (100 mug) (Group 5, n = 50) diluted into a 3-mL solution. The occlusion was released after 20 s and rocuronium was injected over 10-15 s. The patients were observed and asked immediately if they had pain in the arm, and the response was assessed. Reactions such as discomfort and pain, withdrawal of the hand, and so on after the administration of rocuronium were recorded as side effects for 24 h. Ten patients in Group 1, 28 patients in Group 2, 37 patients in Group 3, 30 patients in Group 4, and 15 patients in Group 5 reported no pain. Light pain was seen in 11 patients in Group 1, 14 patients in Group 2, 11 patients in Group 3,12 patients in Group 4, and 20 patients in Group 5. Moderate pain was seen in 15 patients in Group 1, 6 patients in Group 2, 2 patients in Group 3, 8 patients in Group 4, and 10 patients in Group 5. Severe pain was seen in 14 patients in Group 1, 2 patients in Group 2, 0 patients in Group 3, 0 patients in Group 4, and 5 patients in Group 5. Correlation determined with log-linear analysis found in Group I pain score 0 (P < 0.001), Group 1 pain score 1 (P < 0.001), and Group 3 pain score 0 (P < 0.001). We conclude that ondansetron, lidocaine, tramadol, and fentanyl decrease the level of rocuronium injection pain. Among these drugs, lidocame is the most effective, whereas fentanyl is the least effective.
The prevention of propofol injection pain by tramadol or ondansetron
(Lippincott Williams & Wilkins, 2002) Memis, D; Turan, A; Karamanlioglu, B; Kaya, G; Pamukçu, Z
Background and objective: To compare the efficacy of tramadol and ondansetron in minimizing the pain due to injection of propofol in 100 patients. Methods: An intravenous cannula was inserted in the dorsum of the hand. After tourniquet application to the forearm, tramadol 50 mg (Group 1, n = 50) or ondansetron 4 mg (Group 2, n = 50) was injected. The tourniquet was released after 20 s, and propofol 5 mL was administered over 5 s. The patients were observed and asked if they had pain in the arm and the response was assessed. Nausea and vomiting and degree of sedation were recorded for the first postoperative 24 h. Results: Twenty-one patients in Group 1 and 14 patients in Group 2 reported no pain. Slight pain was seen in 15 patients in Group 1 and in 14 patients in Group 2. Moderate pain was seen in 10 patients in Group 1 and 15 patients in Group 2. Severe pain was seen in four of the patients in Group 1 and three patients in Group 2. There was no significant difference of pain between Groups 1 and 2, but we found a significant reduction of nausea and vomiting in the ondansetron group compared with the tramadol group (P = 0.033). Conclusions: Tramadol or ondansetron are equally effective in preventing pain from propofol injection. The added benefit of a reduction in nausea and vomiting after operation in the ondansetron group may be a reason to prefer this drug.

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