Pulmonary involvement in antineutrophil cytoplasmic antibody-associated vasculitides: A single center experience from Turkey.

OBJECTIVE: Pulmonary involvement is an important cause of mortality and morbidity in antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV). In this study, we aimed to evaluate the type and frequency of pulmonary involvement and investigate the potential relationship between thorax computed tomography (CT) signs and other systemic clinical findings in AAV. METHODS: A total of 63 patients over the age of 18 and diagnosed with AAV were included in this study. Thoracic CT imaging findings and clinical features of the patients at the time of diagnosis were retrospectively evaluated. The frequency and distribution of detected pathological findings on imaging according to disease types, in addition to the relationship of these findings with other systemic findings and disease severity, were analyzed. RESULTS: Of 63 patients, 50 (79.4%) had pulmonary symptoms at the time of presentation. Most frequently observed pulmonary finding of thorax CT was nodular opacity. Consolidation, cavitary nodules, bronchiectasis, emphysema and fibrotic sequelae change were more common in the patients with diagnosis of granulomatosis with polyangiitis. Honeycomb, atelectasis, interstitial pneumonia, pulmonary venous congestion and pleural effusion were more common in the patients with diagnosis of microscopic polyangiitis. Ground-glass appearance, central airway disease, peribronchovascular nodules, pericardial effusion and lymphatic adenomegaly (>10 mm) were more common in the patients with diagnosis of eosinophilic granulomatosis with polyangiitis. Interstitial lung disease, pulmonary hemorrhage and severe lung involvement were found significantly increased in patients with myeloperoxidase antibody (MPO)-ANCA positivity (P < 0.05). CONCLUSION: Lung involvement was detected in almost all of the patients with AAV. Both interstitial lung disease and severe lung involvement were more frequently found in patients with MPO-ANCA positivity compared to other patients. Pulmonary examination by an imaging technique in all patients with AAV may be useful to determine the vasculitis subtype and to determine the extent of the disease. PRACTITIONER POINTS: Pulmonary involvement is quite common in AAV. Every patient with suspected AAV should be examined with imaging for lung involvement, even in the absence of respiratory symptoms. Severe pulmonary involvement is associated with the presence of severe disease and MPO-ANCA positivity.

Reliability of Hem-o-Lok clip in laparoscopic appendectomy is an uncharted territory.

AIM: Laparoscopic appendectomy is increasingly used in the treatment of acute appendicitis. We aimed in the present report to evaluate the reliability of the Hem-o-Lok clip used in appendix stump capping for occluding orifice . MATERIAL AND METHODS: In this study, sequential laparoscopic appendectomy cases, in whom Hem-o-Lok clips was employed, in a single center between January 2017 and June 2020 because of acute appendicitis were retrospectively analyzed. RESULTS: The study was completed with a total of 305 cases who underwent laparoscopic appendectomy with hem-o-lok clips within the specified date range. There were no intraoperative complications in any of the cases. The number of women was 94 (30.8%) and the number of men was 211 (69.2%). The average age was 32.7 years. There were 275 (90.2%) patients without appendix perforations and 30 (9.8%) patients with perforations.Postoperative complications occurred in 13 patients. Surgical site infection in five patients, mechanical intestinal in two patients, intraabdominal abscess in five patients, and hematoma at the trocar entry site in one patient were observed. There were no intraoperative complications in any of the patients. CONCLUSIONS: Hem-o-Lok clip can be applied safely in laparoscopic appendectomy for the capping of the appendix stump, with its easy-to-use and low-cost features. KEY WORDS: Acute appendicitis, Laparoscopic appendectomy, Hem-o-lok clip.

Systematic assessment of complications after laparoscopic colorectal surgery for advanced colorectal cancer: A retrospective study using Clavien-Dindo classification, 5-year experience.

Aim: The presence and frequency of surgical complications indicate the quality of the surgery performed. However, a standard classification system should specify, describe, and compare complications. Clavien Dindo classification is an easily applicable classification in the evaluation of complications. Our study aimed to reveal the severity of complications and the factors affecting them by using the Clavien Dindo classification in patients undergoing laparoscopic colorectal surgery. Methods: Between January 2015 and December 2020, we retrospectively collected the laparoscopic colorectal surgery complications using Clavien Dindo grading in patients in our colorectal surgery unit in the database. The outcome variables studied were age, gender, BMI, ASA score, postoperative length of hospital stay, operation procedure, cancer size, postoperative mortality. Results: There were 53 males and 17 female patients, with a mean age of 56,9±13,4.(19-81). Seventy patients, 32 (45%), had at least one postoperative complication. About complications; 58.6% were rated as Clavien I, 22.9% as Clavien II, 8.6% as Clavien IIIa, 4.3% as Clavien IIIb, 2.9% as Clavien IVa, and 2.9% as Clavien V. There was no Clavien grade IVb complication in any of the patients. Length of hospital stays was significantly higher in patients with had major complex surgery and had higher scores. Clavien Dindo classification was positively statistically significantly related to the day of hospitalization in male and female sex (p<0.001 for all). In addition, positively significantly related to Clavien Dindo classation and tumor diameter in the female sex (p=0.014) detected. Conclusions: In laparoscopic colorectal surgery, the Clavien-Dindo classification can be easily applied and used safely to determine complication rates. The reason for this statistical difference that we detected in our study and that occurs in women may be due to anatomical differences or the surgeon's experience.

Rat Model Investigation on the Role of Biomarkers in Hepatic Ischemia-Reperfusion Injury.

OBJECTIVES: Liver function is affected by ischemiareperfusion. Ischemia-reperfusion injury to the liver often follows hepatobiliary surgery. Here, we investigated biomarkers of liver ischemia-reperfusion injury using an animal model. MATERIALS AND METHODS: For this study, 24 male Sprague Dawley rats (146-188 g) were divided into 4 groups: group A was the control group, group B was the partial hepatic ischemia-reperfusion group, group C was the total hepatic ischemia-reperfusion group, and group D was the intermittent total hepatic ischemiareperfusion group. Laboratory liver function levels were measured before ischemia, after ischemia, and after reperfusion. We used liver and renal biopsies for histopathological examination at the end of the study. RESULTS: After clamping and reperfusion, alanine aminotransferase and cystatin C levels in groups B, C, and D were significantly higher than levels in group A. In group B, after clamping, neutrophil gelatinaseassociated lipocalin levels were higher than in groups A and D, with significantly higher level than in group D after reperfusion. Neutrophil gelatinase-associated lipocalin levels decreased significantly in groups B, C, and D after reperfusion. There was significantly greater hepatic damage in groups B, C, and D compared with group A but no significant differences in renal injury scores among the groups. There was a significant positive correlation between hepatic damage and renal injury. With regard to histopathological examination versus laboratory results, a statistically significant positive correlation was shown between grade of hepatic damage and serum alanine aminotransferase and cystatin C levels. Similarly, there was a positive correlation between renal damage score and alanine aminotransferase level. CONCLUSIONS: In our animal model, alanine amino - transferase and cystatin C levels tended to increase with ischemia-reperfusion injury levels but neutrophil gelatinase-associated lipocalin decreased during reperfusion. In liver ischemia, we suggest that neutrophil gelatinase-associated lipocalin may be an important biomarker for distinguishing the reperfusion phase.

A Fast and Reliable Method to Interpret Short-Term Mortality in Perforated Peptic Ulcer: Red Cell Distribution Width is Sensitive and Specific.

INTRODUCTION: Peptic ulcer is an important health problem worldwide with a prevalence of around 5%. Peptic ulcer perforation is a potentially mortal complication of peptic ulcer disease. We aimed to investigate the potential use of red cell distribution width as a prognostic marker in peptic ulcer perforation. METHODS: The files, operation notes, biochemical and hematological parameters, and prognosis of patients who were operated for a peptic ulcer perforation were reviewed in a retrospective cohort study. The relation of red cell distribution width (RDW) to main outcome in-hospital mortality was assessed. RESULTS: The mean age of the 172 patients was 40 ± 17.89. There were 158 (92%) males and 14 (8%) females. The in-hospital mortality was 8.7% (15/172). The median RDW in the group with mortality was 15.00 (interquartile range (IQR): 14.30-17.20) compared with the median RDW in the group with no mortality as 13.2 (IQR: 12.80-14.00, p ≤ 0.001). Receiver operator characteristic curves were plotted for RDW to identify nonsurvivors and yielded a significant area under the curve as 0.812 (95% confidence interval: 0.682-0.942). The sensitivity and specificity of RDW at a cutoff value of 14.25% were calculated with an accuracy of 81.98 (95% confidence interval: 75.40-87.41) as 80.00 (51.91-95.67) and 82.17 (75.27-87.81), respectively. CONCLUSION: Increased RDW may be of use to interpret mortality in patients with peptic ulcer perforation.

A grey zone of hyperamylasemia following endoscopic retrograde cholangiopancreatography: follow-up and differential diagnosis from acute pancreatitis.

INTRODUCTION: Endoscopic retrograde cholangiopancreatography (ERCP) is a tool often used for treating and diagnosing pancreaticobiliary diseases. One of the important complications of ERCP is pancreatitis. Even though transient hyperamylasemia is a more common and benign situation, it must be distinguished from post-ERCP pancreatitis. AIM: To define the risk factors associated with post-ERCP pancreatitis (PEP) and tried to identify a cutoff about laboratory findings for positive or negative prediction. MATERIAL AND METHODS: We reviewed the medical files of patients who underwent ERCP for choledocholithiasis in a retrospective cohort study. The primary outcome is the risk factors associated with PEP. Receiver operator characteristics analysis was carried out for determination of cut-offs for laboratory parameters. RESULTS: The presence of cholangitis (p = 0.018), Wirsung cannulation (p = 0.008), presence of abdominal pain at 12th and 24th h (p < 0.001), amylase level at 12th h (p < 0.001), C-reactive protein (CRP) levels at 6th and 12th h (p = 0.001 and p < 0.001), white blood cells (WBC) levels at 6th and 12th h (p = 0.001 and p < 0.001) were significant for development of PEP. CRP levels above 8 mg/l and WBC above 10 × 103 had negative predictive values over 70% and 90% respectively. CONCLUSIONS: Physical examination and inflammatory parameters are important in diagnosis of PEP. CRP and WBC have high negative predictivity and sensitivity. Amylase level increase was most apparent 12 h after ERCP and significantly higher (p < 0.001) for the development of PEP. The first abdominal pain evaluation is meaningful at the 12th h timepoint because insufflation during the procedure and other causes of abdominal pain may result in misinterpretation.

Evaluation of patients undergoing emergency surgery in a COVID-19 pandemic hospital: a cross-sectional study.

BACKGROUND: The COVID-19 pandemic is threatening healthcare systems and hospital operations on a global scale. Treatment algorithms have changed in general surgery clinics, as in other medical disciplines providing emergency services, with greater changes seen especially in pandemic hospitals. OBJECTIVES: To evaluate the follow-up of patients undergoing emergency surgery in our hospital during the COVID-19 pandemic. DESIGN AND SETTING: Cross-sectional study conducted in a tertiary-level public hospital. METHODS: The emergency surgeries carried out between March 11 and April 2, 2020, in the general surgery clinic of a tertiary-care hospital that has also taken on the functions of a pandemic hospital, were retrospectively examined. RESULTS: A total of 25 patients were included, among whom 20 were discharged without event, one remained in the surgical intensive care unit, two are under follow-up by the surgery service and two died. Upon developing postoperative fever and shortness of breath, two patients underwent thoracic computed tomography (CT), although no characteristics indicating COVID-19 were found. The discharged patients had no COVID-19 positivity at follow-up. CONCLUSION: The data that we obtained were not surgical results from patients with COVID-19 infection. They were the results from emergency surgeries on patients who were not infected with COVID-19 but were in a hospital largely dealing with the pandemic. Analysis on the cases in this study showed that both the patients with emergency surgery and the patients with COVID infection were successfully treated, without influencing each other, through appropriate isolation measures, although managed in the same hospital. In addition, these successful results were supported by 14-day follow-up after discharge.

Comparison of the effects of oral iron treatment every day and every other day in female patients with iron deficiency anaemia.

BACKGROUND: It is known that daily divided doses and high doses of iron increase hepcidin and reduce iron absorption. AIM: This study aimed to compare treatments of iron replacement every other day at low doses, once a day and twice a day in terms of their effectiveness and frequencies of side effects. METHODS: For a month, Group I received 270 mg ferrous sulphate twice a day (total elemental iron dose: 160 mg/day), Group II received 270 mg ferrous sulphate once a day (total elemental iron dose: 80 mg/day), and Group III received 270 mg ferrous sulphate every other day (total elemental iron dose: 80 mg/every other day). Intragroup and intergroup statistical analyses were carried out. RESULTS: Haemoglobin (Hb) increased significantly in all three groups (P = 0.00). The increase in Hb levels was similar among the groups (P = 0.09). Ferritin significantly increased in all three groups after the treatment (P = 0.00). The increase in ferritin in Group I was significantly higher than those in Groups II and III (P < 0.05). Gastrointestinal tract (GIS) side effects were also significantly higher in Group I in comparison to the others (P = 0.001). CONCLUSIONS: A low-dosage of iron treatment every other day may be used in the place of providing iron once or twice every day with similar effectiveness and lower rates of GIS side effects.

Elevated serum bilirubin levels may predict perforation of the appendix.

AIM: Acute appendicitis is one of the most common pathology requiring emergency operations, and if perforated, can cause morbidity and mortality. The serum bilirubin levels were studied to see whether an elevation predicted perforation. MATERIAL AND METHODS: In a retrospective cohort study the medical files of 221 patients who were operated for acute appendicitis were reviewed. RESULTS: Total and indirect bilirubin levels were significantly higher in patients with a perforated appendicitis compared with patients with simple appendicitis. Elevated serum bilirubin had a sensitivity of 50.00 (95% CI 29.93 to 70.07) and a specificity of 80.73 (95% CI 74.43 to 86.05) when predicting a perforated appendicitis. CONCLUSIONS: Appendiceal perforation may be accompanied with elevated serum bilirubin level. Assessment of bilirubin levels must be a part of the initial evaluation of a suspected appendicitis in the emergency room. KEY WORDS: Acute appendicitis, Gangrenous appendicitis, Perforated appendicitis, Serum bilirubin, Total Hyperbilirubinemia.

In the Experimental Model of Acute Mesenteric Ischemia, The Correlation of Blood Diagnostic Parameters with the Duration of Ischemia and their Effects on Choice of Treatment.

Purpose/Aim: Acute mesenteric ischemia is a syndrome characterized by sudden onset abdominal pain followed by intestinal necrosis. Morbidity and mortality increase with delayed diagnosis. Even with the latest radiological diagnostic methods, early diagnosis and initiation of treatment can be delayed. Using an experimental model, here we aim to determine the relationship between the laboratory parameters used to detect acute mesenteric ischemia and the duration of irreversible ischemia. Materials and Methods: A total of 30 male Wistar albino rats were divided into five groups, all of which underwent general anesthesia: (i) Superior mesenteric artery (SMA) dissection with laparotomy was performed, and blood samples and intestinal segment samples were taken after 2 hr (Sham group); (ii) volvulus of one-third of the small intestines was performed manually by laparotomy, and blood samples and intestinal segment samples were taken after 2 hr (Volvulus group); (iii) SMA was ligated with laparotomy, and blood samples and intestinal segment samples were taken after 2 hr (SMA+ligated 2-hr group); (iv) SMA was ligated with laparotomy, and blood samples and intestinal segment samples were taken after 4 hr (SMA+ligated 4-hr group); and (v) SMA was ligated with laparotomy, and blood samples and intestinal segment samples were taken after 6 hr (SMA+ligated 6-hr group). Results: The mean lactate dehydrogenase (LDH) activities of the SMA+ligated 2-hr and SMA+ligated 6-hr groups were statistically higher than the control group (p = .004). Compared to the Sham and Volvulus groups, the mean lactate level of the SMA+ligated 6-hr group was significantly higher (p = .004). Compared to the Sham and Volvulus groups, the mean D-dimer levels of the SMA+ligated 4-hr and SMA+ligated 6-hr groups were significantly higher (p = .004 and .003, respectively). By histopathological evaluation, we found that pathological damage increased as the ischemia lengthened. Conclusions: Mesenteric ischemia leads to an irreversible loss of intestinal perfusion and an increase in parameters of ischemia. Irreversible tissue damage occurs after 4 hr of ischemia and peaks after 6 hr, whereas parameters of ischemia (D-dimer, LDH, and L-Lactate levels) are highest at 2 hr after the onset of ischemia.

Comparison of slit mesh versus nonslit mesh in laparoscopic extraperitoneal hernia repair.

INTRODUCTION: Endoscopic hernia repair integrates the advantages of tension-free preperitoneal mesh support of the groin with the advantages of minimally invasive surgery procedures. AIM: To compare outcomes between slit mesh (SM) and nonslit mesh (NSM) placement in laparoscopic totally extraperitoneal (TEP) inguinal hernia repair. MATERIAL AND METHODS: This is a retrospective study of 353 patients who underwent TEP inguinal hernia repair between January 2010 and December 2011. One hundred forty-nine and 154 hernias were operated on in the SM and NSM groups, respectively. Postoperative complications, recurrence, early postoperative pain, and chronic pain levels were evaluated. RESULTS: In a total of 303 patients, hernia repair was performed as 395 direct and indirect hernias. Nonslit mesh was converted from TEP to transabdominal preperitoneal patch plasty (TAPP) in 4 patients in the group and 6 patients in the slit mesh group. The average operation time of the SM group was significantly higher than that of the NSM group (p < 0.001). In the evaluation of early postoperative pain, VAS levels of the NSM group were statistically significantly lower than those of the SR group in all evaluations (p = 0.001). The pain rate of the SM group after 3 months of chronic pain was significantly higher than that of the NSM group (p = 0.004). There was no difference in recurrence rate, 6th month chronic pain, wound infection or wound hematoma. CONCLUSIONS: The use of SM and NSM in TEP operations is not different in terms of recurrence and complications. However, the use of NSM gives better results in terms of early postoperative pain and chronic pain.

Efficacy and reliability of the use of a needle grasper to prevent trocar site hernia.

INTRODUCTION: Port site herniation is one of the serious complications of laparoscopic surgery, which decreases its benefits. Closure of a fascia defect at the port site is an important problem of laparoscopic surgery, especially in obese patients. AIM: To evaluate needle grasper fascia closure. MATERIAL AND METHODS: We closed the port site fascia using a percutaneous organ-holding device (needle grasper) in laparoscopic cholecystectomy patients. This study included 334 patients who underwent laparoscopic cholecystectomy between January 2015 and January 2017 in our hospital. Patients were divided into 2 fascia closure groups: group 1 with a standard simple suturing technique and group 2 with a needle grasper to close the port site. Patient demographics, operative details, and postoperative outcomes were collected and evaluated. RESULTS: There were 243 female and 91 male (total 334) patients with the mean age of 49.18 ±13.15 years. Only 1 patient in the BMI > 30 kg/m2 group of patients had port site hernia development with the needle grasper technique at the end of the 8-month follow-up period. The port site hernia incidence was higher in group 1 than group 2 (p < 0.001), but there was no significant difference in terms of operation duration between the two groups (p < 0.001, p = 0.709, respectively). In patients with a BMI > 30 kg/m2, both operation duration and port site hernia incidence were higher in simple suture closure than in the needle grasper technique (p < 0.001, p = 0.016, p = 0.005). CONCLUSIONS: The needle grasper technique is easy, simple, safe, fast, and effective for fascia closure of port sites. This method can also be applied in obese patients easily, safely and in a short time.

The Diagnostic Value of Irisin in Pediatric Patients with Acute Abdominal Pain.

OBJECTIVES: Diagnosis of pediatric patients presenting to the Emergency Department with acute abdominal pain is not always easy. The purpose of this study was to investigate the effectiveness of irisin, a peptide hormone with reactivity shown in the appendix and neutrophils, in the differential diagnosis of pediatric patients with acute abdominal pain. METHODS: 162 subjects consenting to participate, including 112 patients presenting to the Pediatric Emergency and Pediatric Surgery clinics with acute abdominal pain and 50 controls, were enrolled in the study. Blood was collected from all patients following initial examination for irisin, WBC, and CRP investigation. RESULTS: Mean irisin levels in cases of acute appendicitis (AA) and perforated appendicitis (PA) were statistically significantly higher compared to nonspecific abdominal pains and the control group. No statistically significant difference was observed in irisin levels between AA and PA cases. WBC and CRP levels were also significantly higher in cases of AA and PA compared to nonspecific abdominal pains. CONCLUSIONS: Differential diagnosis of acute abdominal pains in children and deciding on surgery are a difficult and complex process. Our study shows that irisin can be a useful biomarker in differentiating AA and PA from other acute abdominal pains in children.

Open mesh and laparoscopic total extraperitoneal inguinal hernia repair under spinal and general anesthesia.

INTRODUCTION: Mesh placement is the main standard in repair of inguinal hernia, and laparoscopic repair is the standard of care via spinal, epidural, or combined anesthesia. Here, we compared open and laparoscopic total extraperitoneal (TEP) repairs under general (GA) and spinal anesthesia (SA). METHODS: Inguinal hernia patients (n=440) were analyzed retrospectively. There were four groups: Group 1 was TEP under GA (TEP-GA) (n=111); Group 2 was open mesh repair (OM) under SA (n=116) (OM-SA); Group 3 was open mesh repair under GA (n=117) (OM-GA); Group four was TEP under SA (n=96) (TEP-SA). The age, body mass index, duration of operation, hospital stay, postoperative Visual Analog Scale scores, recurrence, postoperative pain, urinary retention, headache, and patient satisfaction were all recorded. RESULTS: There was no significant difference in terms of hypotension, vomiting, seroma and scrotal edema, recurrence, and wound infection incidence between the groups. However, the operation duration, hospital stay period, headache, urinary retention, postoperative Visual Analog Scale scores, chronic pain, and patient satisfaction showed significant differences between groups. CONCLUSION: Laparoscopic TEP hernia repair is a safe and effective method along with its advantages of shorter hospital stay, less recurrence, less postoperative pain, higher patient satisfaction, and similar postoperative complication rates. SA has the disadvantage of higher incidence of headache and urinary retention compared to GA.

Post-cesarean scar endometriosis.

OBJECTIVE: Endometriosis is seen in women during their reproductive period, where stromal tissue and functional endometrial glands of the uterus are observed outside the uterine cavity. In this study, we aimed to identify the clinical characteristics of our patients who underwent surgery with scar endometriosis and to discuss the surgical results in light of the literature. MATERIALS AND METHODS: A total of 24 patients who underwent surgery and diagnosed as having endometriosis as the result of a pathologic examination were retrospectively evaluated. RESULTS: The mean age of the patients was 31 years. Thirteen presented to general surgery and 11 presented to gynecology outpatient clinics. The pain was cyclical in 19 patients. There was history of cesarean section in 9 patients, twice in 12, and 3 times in three patients. The mean diameter was 39.1 mm on ultrasound, and 37.5 mm on magnetic resonance imaging. Endometriosis was on the left side of the incisions in 13, whereas it was on the right in 11. The mean weight of the lesions was 61.6 grams. CONCLUSION: The occurrence of endometriosis is supported by the iatrogenic implantation theory. In the event of a mass in the abdominal wall, previous obstetric and gynecologic operations and a history of a painful mass during menstruation periods must be questioned. In the treatment of scar endometriosis, excision is required by obtaining secure margins. If diagnosis can be established preoperatively, unnecessary surgeries can prevented.

The Effect of Sterilization Methods of Endoscopic Instruments on the Body: A Study on Rat Model.

PURPOSE: Laparoscopy is widely used in many surgical areas for diagnosis and treatment. The need for sterilization of reusable instruments is an important issue. Ensuring patient safety, preventing infection, and protecting the functionality of the instruments are the most important points to be considered. We aimed to investigate two sterilization methods and their effects generated by their distribution into intra-abdominal tissues during insufflation. MATERIALS AND METHODS: 21 rats were used in the study. The Control Group (Group 1) received anesthesia for 1 hour; Group 2 (Glutaraldehyde (GA)-Pneumoperitoneum Group) received anesthesia for 1 hour; Group 3 (Ethylene Oxide (EO)-Pneumoperitoneum Group) received anesthesia for 1 hour. After 24 hours, the animals were sacrificed, and the kidneys and omentum of the animals were analyzed in a histopathological manner. Blood samples were analyzed at preoperative 24th hour and at postoperative 24th hour. RESULTS: There was a statistically significant difference in omentum, endothelium, and glomerular scores between the groups (p < 0.001 for all groups). Endothelial and glomerular scores were different at a statistically significant level in the EO and GA groups compared to the Control Group. The total score was higher at a statistically significant level in the EO and GA groups compared to the Control Group (p < 0.001 for both groups). CONCLUSION: It was determined in our study that sterilization methods such as EO and GA cause damage in intra-abdominal tissues. In the light of these results, we consider that the most ideal laparoscopic surgery set is the single-use laparoscopy set. However, this does not seem possible especially in developing countries in practice.

Is it possible to reduce the surgical mortality and morbidity of peptic ulcer perforations?

OBJECTIVE: Peptic ulcer perforation is a life-threatening situation requiring urgent surgical treatment. A novel vision in peptic ulcer perforation is necessary to fill the gaps created by antiulcer medication, aging of the patients, and presentation of resistant cases in our era. In this study, we aimed to share our findings regarding the effects of various risk factors and operative techniques on the mortality and morbidity of patients with peptic ulcer perforation. MATERIAL AND METHODS: Data from 112 patients presenting at our Training and Research Hospital Emergency Surgery Department between January 2010 and December 2015 who were diagnosed with PUP through physical examination and laboratory and radiological tests and operated at the hospital have been retrospectively analyzed. Patients were divided into three groups based on morbidity (Group 1), mortality (Group 2), and no complication (Group 3). RESULTS: Of the 112 patients included in the study, morbidity was observed in 21 (18.8%), mortality in 11 (9.8%), and no complication was observed in 80 (71.4%), who were discharged with cure. The differences between group for the average values of the perforation diameter and American Society of Anesthesiologists, Acute Physiology and Chronic Health Evaluation II, and Mannheim Peritonitis Index scores were statistically significant (p<0.001 for each). The average values for the group with mortality were significantly higher than those of the other groups. CONCLUSION: In this study where we investigated risk factors for increased morbidity and mortality in PUPs, there was statistically significant difference between the average values for age, body mass index, perforation diameter, and Acute Physiology and Chronic Health Evaluation II and Mannheim Peritonitis Index scores among the three groups, whereas the amount of subdiaphragmatic free air did not differ.

Prognostic factors in patients with acute mesenteric ischemia.

OBJECTIVE: Acute mesenteric ischemia, one of the causes of acute abdominal pain due to occlusion of the superior mesenteric artery, has a fatal course as a result of intestinal necrosis. There is no specific laboratory test to diagnose acute mesenteric ischemia. The basis of treatment in cases of acute mesenteric ischemia is composed of early diagnosis, resection of intestinal sections with infarction, regulation of intestinal blood flow, second look laparotomy when required, and intensive care support. The aim of this study is to investigate the factors affecting mortality in patients treated and followed-up with a diagnosis of acute mesenteric ischemia. MATERIAL AND METHODS: Forty-six patients treated and followed-up with a diagnosis of acute mesenteric ischemia between January 1st, 2008 and December 31st, 2014 at the General Surgery Clinic of our hospitalwere retrospectively evaluated. The patients were grouped as survivor (Group 1) and dead (Group 2). Age, gender, accompanying disorders, clinical, laboratory and radiologic findings, duration until laparotomy, evaluation according to the Mannheim Peritonitis Index postoperative complications, surgical treatment applied, and type of ischemia and outcome following surgery were recorded. RESULTS: A total of 46 patients composed of 22 males and 24 females with a mean age of 67.5±17.9 and with a diagnosis of mesenteric ischemia were included in the study. Twenty-seven patients died (58.7%) while 19 survived (41.3%). The mean MPI score was 16.8±4.7 and 25.0±6 in Group 1 and Group 2, respectively, and the difference between the two groups was statistically significant (p<0,001). Fourteen of the 16 (51.9%) patients who had a Mannheim Peritonitis Index score of 26 or higher died while two of them survived (10.5%). Thirteen out of the 30 (48.1%) patients with a Mannheim Peritonitis Index score of 25 or lower died while 17 (89.5%) patients survived. The increased MPI score was significantly correlated withmortality (p=0.004). CONCLUSION: Suspicion of disease and early use of imaging in addition to clinical and laboratory evaluations are essential in order to decrease mortality rates in acute mesenteric ischemia. Prevention of complications with critical intensive care during the postoperative period aids in decreasingthe mortality rate. In addition, using the Mannheim Peritonitis Index can be helpful.

The effects of prolonged CO2 insufflation on kidney function in a rat pneumoperitoneum model.

INTRODUCTION: Pneumoperitoneum (PP) is known to cause ischemia in kidneys and other intra-abdominal organs because of decreased splanchnic blood flow. AIM: We aimed to determine the degree of renal injury that occurs due to a PP and prolonged PP. We measured renal injury biomarkers and made a histopathological evaluation to estimate the degree of injury and assessed the correlation of biomarkers with histopathological findings. MATERIAL AND METHODS: Twenty-one female Sprague Dawley rats were separated randomly into three groups. Group 1 was the control group and was given anesthesia for 3 h. In group 2, a PP was administered under anesthesia for 1 h. A pneumoperitoneum was administered under anesthesia to animals in group 3 for 3 h. RESULTS: Pathological analysis showed a significant statistical difference between the 3 groups. In particular, neutrophil gelatinase-associated lipocalin (NGAL) and cystatin C (Cys C) levels at the 24th h and preoperative mean urea levels showed a significant difference between the groups. The 24th-hour NGAL level in group 3 was significantly higher than that of group 1. The preoperative Cys C level was higher in group 1 than in either group 2 or 3. Cys C was decreased significantly in group 1 and increased significantly in both groups 2 and 3. CONCLUSIONS: The increase in NGAL and Cys C levels directly correlated with the duration of PP and intra-abdominal pressure, and they are therefore good biomarkers in diagnosing acute renal injury in the early phase. Serum creatinine level is not a good biomarker in the early phase of renal injury.