Ali Abbas Yilmaz

Has the quality of abstracts for randomised controlled trials improved since the release of Consolidated Standards of Reporting Trial guideline for abstract reporting? A survey of four high-profile anaesthesia journals.

Background and objective Randomised controlled trial (RCT) abstracts published in journal articles have traditionally been deficient of crucial information. To improve the quality of RCT abstracts, in January 2008, the Consolidated Standards of Reporting Trial (CONSORT) group published a checklist of essential information for inclusion. The current study assessed whether there has been an improvement in the quality of RCT abstracts published in main anaesthesia journals since this new guideline was introduced. Methods Articles involving human RCTs published in four high-profile anaesthesia journals (Anaesthesia, Anesthesia & Analgesia, Anesthesiology and the European Journal of Anaesthesiology) were reviewed, comparing those published from October 2005 to September 2006 (pre-CONSORT abstracts) with those published from October 2008 to September 2009 (post-CONSORT abstracts). Trials involving healthy volunteers or cadavers, cost-effectiveness studies, meta-analyses and letters were excluded. Abstracts from remaining RCTs were randomly assigned to four reviewers in a blinded fashion and reviewed for content using the new CONSORT checklist. Results In total, 527 RCT abstracts (pre-CONSORT RCTs, n = 275 and post-CONSORT RCTs, n = 252) were analysed. The majority of abstracts in both groups provided an appropriate description of study interventions (73.1 and 73.8%, pre-CONSORT abstracts versus post-CONSORT abstracts, respectively), objective (91.3 and 90.1%) and conclusions (72.4 and 66.3%). From pre-CONSORT to post-CONSORT guidelines for abstract reporting, there were significant improvements in correctly identifying blinding (18.2–29%) and harmful effects (31.6–42.1%). The improvement in reporting the nature of the trial in abstract titles (20.1–29%) and primary outcome measure in the methods section (22.9–30.6%) did not reach significance. There was no clear improvement in the already poor reporting of trial design, participants, randomisation, recruitment, outcomes, trial registration and funding sources. Conclusions Despite some promising improvements and inter-journal differences, the overall quality of RCT abstracts and adherence to the CONSORT checklist for abstracts remains poor.

The effect of scalp block and local infiltration on the haemodynamic and stress response to skull-pin placement for craniotomy

Background and objective The insertion of skull pins into the periosteum induces not only a haemodynamic response but also an increase in stress hormones. We compared the effects of scalp-nerve block, infiltration anaesthesia, and routine anaesthesia during skull-pin insertion on haemodynamic and stress responses to craniotomy. Methods Forty-five ASA I or II patients, scheduled for elective craniotomies, were enrolled in this prospective, randomized, placebo-controlled study. Anaesthesia was induced with thiopental (5 mg kg−1), fentanyl (2 μg kg−1) and vecuronium (0.1 mg kg−1), and was maintained with 50% N2O in oxygen and 1% isoflurane. Five minutes before head pinning, 0.5% bupivacaine was infiltrated at each pin-insertion site in group L. In group S, scalp block was performed by blocking the supraorbital, supratrochlear, auriculotemporal, occipital, and postauricular branches of the greater auricular nerves using 20 ml 0.5% bupivacaine. Opioids were used to control haemodynamic responses in group C (the control group). Heart rate and mean arterial pressure were recorded at regular intervals before and for 1 h after induction. Blood samples were collected for cortisol and adrenocorticotropic hormone analysis 5 min before induction and 5 and 60 min after pin-holder insertion. Results There were significant increases in heart rate and mean arterial pressure during head pinning in groups L and C compared with group S and also at the 1st, 2nd and 3rd minutes after pinning (P < 0.05). In group S, the reduced plasma cortisol and adrenocorticotropic hormone levels measured at the 5th and 60th minutes after pinning were significantly lower than those in groups L and C (P < 0.05). Conclusion We conclude that scalp block using 0.5% bupivacaine blunts the haemodynamic and stress responses to head pinning better than routine anaesthesia or scalp infiltration with bupivacaine and should be considered in conjunction with general anaesthesia for craniotomy.

The impact of two arterial catheters, different in diameter and length, on postcannulation radial artery diameter, blood flow, and occlusion in atherosclerotic patients.

PurposeArterial cannulation is a common intervention in anesthesia practice. However, the success rates and complications of radial arterial cannulation with 20-G or smaller catheters in patients with atherosclerosis have been underevaluated. The aim of this prospective randomized study was to compare the efficacy of and complications with 20- and 22-G catheters for radial arterial cannulation in atherosclerotic patients.MethodsThirty patients with atherosclerosis, American Society of Anesthesiologists (ASA) III–IV, undergoing general anesthesia were enrolled in the study. Radial artery cannulation was performed in group 20G (n = 15) with a 20-gauge (20 × 1.1 × 33 mm; flow, 61 ml·min−1) catheter and in group 22G (n = 15) with a 22-gauge (22 × 0.9 × 25 mm; flow, 36 ml·min−1) catheter. Radial artery systolic blood flow (SBF) and radial artery diameter (RAD) were assessed by a Doppler ultrasound probe before cannulation and 24 h after decannulation for vascular complications. The number of puncture attempts, arterial blood gas samples, and manual flushes; total heparinized solution consumption; duration of cannulation; decannulated radial arterial systolic blood flow; postcannulation RAD; and vascular complications such as occlusion, hematoma, pseudoaneurysm, bleeding, and thrombosis were noted. The Mann Whitney U-test, χ2 test, and one-sample t-test were used. Values are expressed as medians and quartiles and P < 0.05 was considered as significant.ResultsThe number of puncture attempts was greater in group 20G (range, 1 to 4) than in group 22G (range, 1 to 2; P = 0.02). In group 20G patients, postoperative RAD was larger than preoperative RAD (P = 0.02) and postoperative SBF was lower than preoperative SBF (P = 0.03). In group 22G patients postoperative SBF was higher than preoperative SBF (P = 0.03), while there was no significant difference between preoperative and postoperative RAD. The occlusion rate of atherosclerotic radial arteries was 6% with the 22-gauge catheter and 26% with the 20-gauge catheter (P = 0.02).ConclusionA 22-gauge catheter for radial arterial cannulation in patients with atherosclerosis provides unchanged postcannulated radial artery diameter, decreases postcannulation complications, and improves the first-attempt success rate.

Therapeutic plasma exchange in an intensive care unit (ICU): A 10-year, single-center experience

Therapeutic plasma exchange (TPE) is a blood purification method that effectively allows for the removal of waste substances by separating out plasma from other components of blood and the removed plasma is replaced with solutions such as albumin and/or plasma, or crystalloid/colloid solutions. Plasma exchange therapies are becoming increasingly essential, being used in daily practice in critical care settings for various indications, either as a first-line therapeutic intervention or as an adjunct to conventional therapies. This retrospective clinical study analyzes 10-year therapeutic plasma exchange activity experience in an 18-bed ICU at a tertiary care university hospital with a large, critically-ill patient population. Medical records of 1188 plasma exchange procedures on 329 patients with different diagnoses admitted from January 2000 to July 2010 were evaluated. The aim of the study was to determine the TPE indications and outcomes of the patients who underwent TPE in the ICU with conventional therapy. The secondary endpoints were to determine the differences between different patient groups (septic vs. non-septic indications) in terms of adverse events and procedural differences.

Validity and reliability of Turkish version of family satisfaction in the intensive care unit

To evaluate the quality of care that is provided in intensive care units, needs and satisfaction of the patient relatives must also be considered. The aim of the study is to test the Turkish version of the Family Satisfaction in the Intensive Care Unit (FS-ICU-24) Survey, which was developed by Heyland et al. This study was planned and applied as a methodological study. Survey was conducted in the intensive care units of a military education and research hospital and a medical faculty hospital, department of anaesthesia and reanimation in the capital city Ankara of Turkey. Sample of the survey was composed of 120 participants. Cronbachs alpha value for the FS-ICU-24 general internal consistency in this study was calculated as 0.95 for total scale. In this study, the Turkish version of the FS-ICU-24 was found to be reliable and valid with Turkish population.

Does ultrasonographic volume of the thyroid gland correlate with difficult intubation? An observational study

BACKGROUND AND OBJECTIVES Preoperative ultrasonographic evaluation of the thyroid gland done by surgeons could let us foresee airway management challenges. The aim of this observational study was to evaluate the effects of thyroid-related parameters assessed preoperatively by surgeons via ultrasonography and chest X-ray on intubation conditions. METHODS Fifty patients undergoing thyroid surgery were enrolled. Thyromental distance, Mallampati score, neck circumference and range of neck movement were evaluated before the operation. Thyroid volume, signs of invasion or compression and tracheal deviation on chest X-ray were also noted. The intubation conditions were assessed with Cormack and Lehane score and the intubation difficulty scale. Statistical analyses were done with SPSS 15.0 software. RESULTS The mean thyroid volume of the patients was 26.38 ± 14 mL. The median intubation difficulty scale was 1 (0-2). Thyromental distance (p = 0.011; r = 0.36; 95% CI 0.582-0.088), Mallampati score (p = 0.041; r = 0.29; 95% CI 0.013-0.526), compression or invasion signs (p = 0.041; r = 0.28; 95% CI 0.006-0.521) and tracheal deviation on chest X-ray (p = 0.041; r = 0.52; 95% CI 0.268-0.702) were correlated with intubation difficulty scale. Also patients were classified into two groups related to their intubation difficulty scale (Group I, n = 19: intubation difficulty scale = 0; Group II, n = 31: 1< intubation difficulty scale ≤ 5) and difficult intubation predictors and thyroid-related parameters were compared. Only Mallampati score was significantly different between groups (p = 0.025). CONCLUSION The thyroid volume is not associated with difficult intubation. However clinical assessment parameters may predict difficult intubation.

The Effects of Bougie Diameters on Tissue Oxygen Levels After Sleeve Gastrectomy: A Randomized Experimental Trial

Background: Staple-line leak is the most frightening complication of laparoscopic sleeve gastrectomy and several predisposing factors such as using improper staple sizes regardless of gastric wall thickness, narrower bougie diameter and ischemia of the staple line are asserted. Aims: To evaluate the effects of different bougie diameters on tissue oxygen partial pressure at the esophagogastric junction after sleeve gastrectomy. Study Design: A randomized and controlled animal experiment with 1:1:1:1 allocation ratio. Methods: Thirty-two male Wistar Albino rats were randomly divided into 4 groups of 8 each. While 12-Fr bougies were used in groups 1 and 3, 8-Fr bougies were used in groups 2 and 4. Fibrin sealant application was also carried out around the gastrectomy line after sleeve gastrectomy in groups 3 and 4. Burst pressure of gastrectomy line, tissue oxygen partial pressure and hydroxyproline levels at the esophagogastric junction were measured and compared among groups. Results: Mortality was detected in 2 out of 32 rats (6.25%) and one of them was in group 2 and the cause of this mortality was gastric leak. Gastric leak was detected in 2 out of 32 rats (6.25%). There was no significant difference in terms of burst pressures, tissue oxygen partial pressure and tissue hydroxyproline levels among the 4 groups. Conclusion: The use of narrower bougie along with fibrin sealant has not had a negative effect on tissue perfusion and wound healing.

Existe correlação entre o volume ultrassonográfico da glândula tireóide e intubação difícil? Um estudo observacional☆

BACKGROUND AND OBJECTIVES Preoperative ultrasonographic evaluation of the thyroid gland done by surgeons could let us foresee airway management challenges. The aim of this observational study was to evaluate the effects of thyroid-related parameters assessed preoperatively by surgeons via ultrasonography and chest X-ray on intubation conditions. METHODS Fifty patients undergoing thyroid surgery were enrolled. Thyromental distance, Mallampati score, neck circumference and range of neck movement were evaluated before the operation. Thyroid volume, signs of invasion or compression and tracheal deviation on chest X-ray were also noted. The intubation conditions were assessed with Cormack and Lehane score and the intubation difficulty scale. Statistical analyses were done with SPSS 15.0 software. RESULTS The mean thyroid volume of the patients was 26.38±14mL. The median intubation difficulty scale was 1 (0-2). Thyromental distance (p=0.011; r=0.36; 95% CI 0.582-0.088), Mallampati score (p=0.041; r=0.29; 95% CI 0.013-0.526), compression or invasion signs (p=0.041; r=0.28; 95% CI 0.006-0.521) and tracheal deviation on chest X-ray (p=0.041; r=0.52; 95% CI 0.268-0.702) were correlated with intubation difficulty scale. Also patients were classified into two groups related to their intubation difficulty scale (Group I, n=19: intubation difficulty scale=0; Group II, n=31: 1<intubation difficulty scale≤5) and difficult intubation predictors and thyroid-related parameters were compared. Only Mallampati score was significantly different between groups (p=0.025). CONCLUSION The thyroid volume is not associated with difficult intubation. However clinical assessment parameters may predict difficult intubation.

Outcomes of Antepartum and Postpartum Obstetric Admissions to the Intensive Care Unit of A Tertiary University Hospital: An 8-Year Review

Objective Although their rates are decreasing, pregnancy-related mortality and morbidity are problems worldwide. In this study, we aimed to review the characteristics, diagnoses, required interventions and outcomes of obstetric patients admitted between 2006 and 2014 to the Intensive Care Unit (ICU) of a tertiary university hospital to provide an indicator for improving the management of critically ill obstetric patients. Methods A retrospective study of hospital records of obstetric admissions to the ICU was conducted. Results The pregnancy-related ICU admission rate was 0.21% among all deliveries during the study period. Nine antepartum (mean gestational age: 23 weeks) and 48 postpartum (mean gestational age: 34 weeks) obstetric ICU admissions were included. Most obstetric patients admitted antepartum were primiparous (88.8%), whereas those admitted postpartum were multiparous (64.6%). The mean ICU stay was 7 days among the patients admitted antepartum and 6 days among those admitted postpartum. Common medical reasons for ICU admission were respiratory failure and HELLP syndrome in both groups; DIC and eclampsia were also medical reasons causing ICU admission among the postpartum patients. Mechanical ventilation and blood derivative transfusion were the most common interventions required during the ICU stay of the obstetric patients. Maternal death was unique to the patients admitted postpartum (6 patients, 12.5%). Conclusion We reviewed obstetric admissions to our institution over an 8-year period. We believe that a nationwide study in Turkey that provides an indicator of the frequency, reasons of ICU admission and outcome of obstetric patients is required to improve the quality of intensive care.

Myofascial necrosis as a complication of central venous catheterization in a patient with paroxysmal nocturnal hemoglobinuria.

tal syndrome resulting in high median nerve palsy. Fasciotomy was performed after platelet and erythrocyte replacement (Fig. 1). During the intra-operative exploration, subcutaneous tissue and biceps muscle appeared necrotic and the median nerve was observed to be compressed by edematous and fibrotic tissue. Specimens for bacterial cultures were collected. The patient had a continuous fever in the post-operative period. In this period, the patient’s neutrophil count was 1200/mm3. Although the bacterial culture reports were negative, the empiric antibiotic was changed and one dose of 400 mg of teicoplanin, three doses of 1000 mg of meropenem and three doses of 900 mg of clindamycin were administered daily. After a 5-day post-operative period, surgical debridement of totally necrotic parts of the skin, subcutaneous tissue and muscles of the chest and left arm was performed (Fig. 2). Post-anesthesia respiratory failure occurred and the patient was intubated and supported with mechanical ventilation and inotropic agents. Three days later the patient could be extubated and had no need of ventilation support and inotropic agents. Two more surgical debridements were carried out in the following month. Thereafter the patient was referred to the plastic surgery department for a skin graft. CVC is frequently required for the treatment and hemodynamic monitorization of critically ill patients hospitalized in intensive care units. However, this procedure can lead to some serious complications. These complications may be infectious, mechanical or Myofascial necrosis as a complication of central venous catheterization in a patient with paroxysmal nocturnal hemoglobinuria