Distal radial fractures: a nationwide register study on corrective osteotomies after malunion.

The aim of the present study was to explore the incidence of corrective osteotomies after conservatively treated distal radial fracture and the risk for late correction depending on the patient's age. Based on data from the Finnish National Care Register of Health Care, Specialist Care, on all corrective osteotomies carried out in Finland during 2015-2019 in adults aged ≥20 years, we calculated the mean annual incidence rates per 100,000 person-years, standardized with the European Standard Population 2013. Using multivariable logistic regression, we calculated the risk of corrective osteotomies in various age groups. In total, 41,418 distal radial fractures were identified. Of those, 10,577 received surgical treatment in the acute phase. The incidence rate of primary operations for distal radial fractures was 47.9 per 100, 000 person-years. A total of 321 conservatively treated fractures needed corrective osteoteomy, with a surprisingly low mean annual incidence rate of 1.5 per 100,000 person-years. The risk for this was highest in patients in their fourth or fifth decade.Level of evidence: III.

Enchondroma Detection from Hand Radiographs with an Interactive Deep Learning Segmentation Tool-A Feasibility Study.

Enchondromas are common benign bone tumors, usually presenting in the hand. They can cause symptoms such as swelling and pain but often go un-noticed. If the tumor expands, it can diminish the bone cortices and predispose the bone to fracture. Diagnosis is based on clinical investigation and radiographic imaging. Despite their typical appearance on radiographs, they can primarily be misdiagnosed or go totally unrecognized in the acute trauma setting. Earlier applications of deep learning models to image classification and pattern recognition suggest that this technique may also be utilized in detecting enchondroma in hand radiographs. We trained a deep learning model with 414 enchondroma radiographs to detect enchondroma from hand radiographs. A separate test set of 131 radiographs (47% with an enchondroma) was used to assess the performance of the trained deep learning model. Enchondroma annotation by three clinical experts served as our ground truth in assessing the deep learning model's performance. Our deep learning model detected 56 enchondromas from the 62 enchondroma radiographs. The area under receiver operator curve was 0.95. The F1 score for area statistical overlapping was 69.5%. Our deep learning model may be a useful tool for radiograph screening and raising suspicion of enchondroma.

Association of ulnar variance with three-dimensional carpal alignment and demographics in asymptomatic volunteers.

BACKGROUND: Several carpal pathologies are considered to be related to ulnar variance. Recently, computer-aided computed tomography (CT) analysis software was introduced to quantify three-dimensional (3D) carpal alignment with high accuracy and reliability. PURPOSE: To determine the association of ulnar variance with 3D carpal alignment and demographics. MATERIAL AND METHODS: A wrist of 121 asymptomatic volunteers (69 men, 52 women; mean age = 38 ± 10.4 years) was imaged in the neutral wrist position with cone-beam CT. Computer-aided CT analysis software (Bonelogic), based on segmentation and numerical modelling, was used to define ulnar variance and standardized 3D axes for all carpal bones. The association of ulnar variance with 3D carpal alignment, age of the volunteer, and side and dominance of the imaged wrist was assessed. RESULTS: The mean ulnar variance was -1.6 ± 1.5 mm (range = -5.3 to 2.4 mm). The mean ulnar variance was -1.9 mm and -1.1 mm in men and women (P = 0.007), respectively. Of the imaged 121 wrists, 18 (15%) had positive and 103 (85%) negative ulnar variance. There was no association between ulnar variance and any of the radio- or intercarpal angle values in either the sagittal or coronal plane (ρ = -0.16…0.17, r = -0.13….0.12). The ulnar variance showed no association with side (P = 0.51) or dominance (P = 0.27) of the imaged wrist. CONCLUSION: 3D carpal alignment is not affected by ulnar variance. The association of ulnar variance with sex may in part explain the difference in reported prevalence of some carpal pathologies, such as ulnar impaction syndrome and Kienböck's disease.

Adverse Events After Surgical Treatment of Adult Diaphyseal Forearm Fractures: a Retrospective Analysis of 470 Patients.

Background: The incidence of and risk factors for adverse events after internal fixation of diaphyseal forearm fractures have not been well defined in the current literature. The objective of this study was to estimate the incidence of adverse events after diaphyseal forearm fracture surgery in adults and explore potential risk factors for adverse events. Methods: We conducted a retrospective, multicenter, cohort study in which we evaluated all diaphyseal forearm fractures between 2009 and 2019 in patients presenting to 4 trauma hospitals in southern Finland. Patients <16 years of age and fracture-dislocations were excluded. There were 470 patients included in this study. Patient records were evaluated to identify and analyze adverse events. Results: There were 202 patients with both-bone fractures, 164 patients with isolated ulnar fractures, and 104 patients with isolated radial fractures. In total, 146 patients (31%) experienced an adverse event; 83 (18%) had major adverse events (persistent or requiring surgical intervention). The patients underwent procedures performed by 185 different surgeons. The median number of operations for a single surgeon was 2 (range, 1 to 12). The most common major adverse events were plate and screw-related issues (6%), nonunion (5%), persistent nerve injuries (4%), and refractures (4%). Higher body mass index, Gustilo-Anderson type-II open fractures, both-bone fractures, isolated radial fractures, and operations performed by junior residents were found to be risk factors for adverse events in the multivariable analysis. Conclusions: Adverse events after diaphyseal forearm fracture surgery are common. We recommend concentrating these operations in a limited team of surgeons and restricting inexperienced surgeons from operating on these fractures without supervision. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Proximal ROw carpectOmy versus four-corner Fusion (PROOF-trial) for osteoarthritis of the wrist: study protocol for multi-institutional double-blinded randomized controlled trial.

BACKGROUND: Scapholunate advanced collapse (SLAC) and scaphoid non-union advanced collapse (SNAC) are common types of wrist osteoarthritis (OA). Non-operative treatment consists of pain medication, splinting, and avoiding activities that induce pain. However, in case a course of conservative treatment is unsuccessful, operative treatment is needed. The two most conventional operative approaches for SLAC/SNAC OA are four-corner arthrodesis (FCA) and proximal row carpectomy (PRC). Although FCA is the gold-standard operative technique and may lead to superior grip strength, the evident benefit of PRC is that it obviates any need for hardware removal and controlling for bony union. To date, no high-quality randomized controlled trial comparing FCA and PRC exists. As clinical outcomes seem comparable, a trial that assesses patient-reported outcomes, adverse events, and secondary operations may guide clinical decision making between these two procedures. Thus, the aim of this multi-institutional double-blind randomized controlled trial is to study whether PRC is non-inferior to FCA in treating SLAC/SNAC OA. We hypothesize that PRC is non-inferior to FCA with lower economic expanses. METHODS: The trial is designed as a randomized, controlled, patient- and outcome-assessor blinded multicenter, two-armed 1:1 non-inferiority trial. Patients with SLAC/SNAC-induced wrist pain meeting trial inclusion criteria will undergo wrist arthroscopy to further assess eligibility. Each patient eligible for the trial will be randomly assigned to undergo either FCA or PRC. The primary endpoint of this study is the Patient Rated Wrist Evaluation (PRWE) at 1-year after FCA versus PRC. Secondary outcomes include Quick-Disabilities of the Arm, Shoulder and Hand, EQ-5D-5L, pain, grip strength, wrist active range of motion, radiographic evaluation, and adverse events. Trial design, methods, and statistical analysis plan will be presented here. DISCUSSION: We present an RCT design comparing FCA vs PRC for SLAC/SNAC-induced OA. The results of this trial will assist in decision making when planning surgery for SLAC/SNAC. TRIAL REGISTRATION: ClinicalTrials.gov NCT04260165 . Registered February 7, 2020.

Higher Soong grade predicts flexor tendon issues after volar plating of distal radius fractures - a retrospective cohort study.

BACKGROUND AND PURPOSE: Soong classification is used to estimate volar locking plate prominence and evaluate the risk for flexor tendon ruptures after surgical treatment of distal radius fractures (DRFs). However, the scientific community has questioned the Soong classification due to lacking evidence. Therefore, this study aimed to evaluate the accuracy of Soong grading as a predictor for flexor tendon issues and plate removal. PATIENTS AND METHODS: We performed a retrospective single-center review of adult distal radius fracture patients treated with a volar locking plate between 2009 and 2019. In total, 2779 patients were included in the study. The primary outcome was a flexor tendon issue (flexor tendon rupture, tendinitis, or flexor irritation), whereas plate removal was a secondary outcome. Using Soong grade 0 as a reference, we used univariable and multivariable logistic regression to calculate odds ratios (OR) with 95% confidence intervals (CI) for flexor tendon issues and plate removal. RESULTS: In total, 756 (27%) patients were graded as Soong 0, 1679 (60%) Soong 1, and 344 (12%) Soong 2, respectively. There were 32 (1.2%) patients with flexor tendon issues, of which 4 were flexor tendon ruptures, 8 tendinitises, and 20 flexor irritations. The adjusted OR for flexor tendon issues was 4.4 (CI 1.1-39.7) for Soong grade 1 and 9.7 (CI 2.2-91.1) for Soong grade 2. The plate was removed from 167 (6.0%) patients. Soong grade 1 had a univariable OR of 1.8 (CI 1.2-2.8) for plate removal, and Soong grade 2 had an OR of 3.5. (CI 2.1-5.8), respectively. CONCLUSION: Flexor tendon ruptures are rare complications after the volar plating of DRFs. A higher Soong grade is a risk factor for flexor tendon issues and plate removal. TRIAL REGISTRATION: The trial was retrospectively registered.

First RAND-36-Item Health Survey in Three-dimensional Laparoscopy Cholecystectomy: A Prospective Randomized Study.

BACKGROUND/AIM: National healthcare organizers require feedback from patients to improve medical treatment methods. Three-dimensional laparoscopy cholecystectomy (3D-LC) is a modern technique in surgery. However, there are no studies with patient feedback from validated questionnaires assessing the postoperative treatment results in 3D-LC. PATIENTS AND METHODS: Initially 200 patients with symptomatic cholelithiasis were randomized into 3D-LC or mini-laparotomy cholecystectomy (MC) groups. RAND-36-Item Health Survey was performed preoperatively and 4 weeks following surgery relating the survey scores between the 3D-LC and MC groups. RESULTS: Similar postoperative RAND-36 scores were reported for both groups preoperatively and at 4 weeks following surgery, and no significant differences in RAND-36 domains were shown. When the patients in both study groups were combined, Mental Health (p<0.001), Bodily Pain (p=0.01) and General Health (p=0.016) domain scores were significantly higher, indicating a significantly positive change in quality of life 4 weeks postoperatively, while those for the Role-Physical domain were significantly lower, indicating reduced physical activity during the 4 weeks following surgery. In comparison to the Finnish reference RAND-36 scores, scores at 4 weeks were significantly higher for the Mental Health domain (MC group, p<0.001 and 3D-LC group, p=0.001) whilst scores were significantly lower in four other domains: Physical Functioning, Social Functioning, Bodily Pain and Role-Physical. CONCLUSION: This study shows, for the first time using the RAND-36-Item Health Survey, relatively similar short-term outcomes in patients 4 weeks following cholecystectomy by 3D-LC and MC. Although scores for three RAND-36 domains were significantly higher postoperatively, indicating a significantly positive change in quality of life, a longer follow-up after cholecystectomy is needed for final conclusions to be drawn.

Three-dimensional Laparoscopy (3D-LC) Versus Minilaparotomy (MC) in Cholecystectomy: A Prospective Randomized Study.

BACKGROUND/AIM: Three-dimensional laparoscopy (3D-Lap) is a recent innovation in surgery. The 3D-Lap is rarely used in cholecystectomy (3D-LC) and there are no prospective studies assessing advantages and disadvantages of 3D-LC versus minilaparotomy (MC) in cholecystectomy. PATIENTS AND METHODS: This was a prospective clinical study conducted in the Kuopio University Hospital, including 200 patients with symptomatic cholelithiasis who were randomized into 3D-LC (n=112) or MC (n=88) groups. The numeric rating scale (NRS) pain score and number of analgesic doses (NAD) following surgery were documented. RESULTS: Similar low postoperative pain scores were reported in the 3D-LC and MC groups during the first hours following surgery, although the 3D-LC patients reported lower NRS pain score (p<0.05) one hour postoperatively. Interestingly, the 3D-LC patients showed significantly less pain 24 hours following surgery, the mean of NRS of 0-10 score at rest being 1.2 in the 3D-LC group versus 2.2 in the MC group (p<0.001), and the pain at the quick movement/coughing, the mean NRS being 2.9 in the 3D-LC group versus 3.6 in the MC group (p=0.05). CONCLUSION: The 3D-LC patients reported significantly lower pain scores 24 hours postoperatively than MC patients. However, the patient experience of pain depends on many factors and our results suggest that both 3D-LC and MC are safe and efficient techniques for cholecystectomy.

Interleukin-18 (IL-18) Cytokine Serum Concentrations Correlate With Pain Scores and the Number of Analgesic Doses Following Surgery.

BACKGROUND/AIM: Anti- and proinflammatory cytokines and plasma high-sensitivity C-reactive protein (hs-CRP) are used to assess inflammatory stress response (ISR) following surgery. However, the serum IL-18 (interleukin-18) cytokine values versus numeric rating scale (NRS) pain score and number of analgesic doses (NAD) postoperatively are unknown. PATIENTS AND METHODS: Blood levels of six interleukins (IL-18, IL-1ra, IL-6, IL-10, IL-1ß, and IL-8) and hs-CRP were measured at three time points; before operation (PRE), immediately after operation (POP1), and six hours after operation (POP2) in 114 patients with cholelithiasis. RESULTS: Following surgery, the blood levels of hs-CRP and IL-1ra, IL-6, IL-10, and IL-1ß cytokines had a trend for increase (p<0.001 and p=0.014, respectively). The serum IL-18 concentrations inversely correlated to NRS and NAD during the first 24 h postoperatively. CONCLUSION: The correlation of IL-18 levels to NRS and NAD values supports the hypothesis that ISR and pain are related.

Epidemiology and Treatment of Distal Radius Fractures in Finland-A Nationwide Register Study.

A distal radius fracture (DRF) is one of the most common fractures in emergency units, the treatment of which requires considerable health care resources. We analyzed the incidence rate for DRFs and the incidence rate of operative treatment over a five-year period, 2015-2019, for the entire population of Finland and all ages. Data was obtained from the Finnish National Care Register for Health Care. The results were counted as cases per 100,000 person/years and standardized with the European Standard Population 2013. The mean annual incidence rate of DRF was 204.90 (203.21-206.59) in specialist care and 69.53 (68.55-70.52) in primary care. It peaked among the pediatric population and among elderly women, in whom it was more than four times as common compared to men of the same age. No increase in the incidence rate of DRFs was found. The mean incidence rate of operative treatment was 45.66 (45.66-45.66)/100,000 person/years, 2015-2019; women were more likely to undergo operative treatment. Altogether, 15-18% of DRFs were operated on over the study period. The annual incidence rate of operations seemed to plateau compared to earlier studies in Finland.

Enchondromas of the Hand: Curettage With Autogenous Bone vs. Bioactive Glass S53P4 for Void Augmentation.

Background/Aim Enchondroma is the most common primary bone tumour of the hand. When surgery is indicated, curettage with or without void augmentation has been described. However, only few comparative studies exist. The aim of this study was to compare the outcomes of hand enchondromas treated with autologous bone graft (AG) and bioactive glass S53P4 (BAG). PATIENTS AND METHODS: A retrospective comparative analysis was conducted among patients surgically treated for hand enchondromas at a tertiary referral centre during a 17-year period. RESULTS: A total of 190 patients (116 AG vs. 74 BAG) with 205 enchondromas were included. No statistically significant differences in outcome measures were observed. A reoperation was performed in five patients in the autologous bone-graft group; one patient presented a rare malignant transformation from enchondroma to chondrosarcoma after the primary operation. No reoperations were performed in the BAG group. CONCLUSION: Although AG is the gold standard for filling bony cavities, bone-graft retrieval can cause complications and postoperative pain. Our results suggest that S53P4 BAG is a safe and effective bone-graft material alternative for filling of enchondroma-evacuated cavities.

Substantial Increase in the Incidence of Surgery for Osteoarthritis of the Base of the Thumb Between 1997 and 2019 in Finland.

BACKGROUND/AIM: Osteoarthritis (OA) at the trapeziometacarpal joint (TMC) is common. However, no published data on the TMC-OA surgery incidence exist. The aim of this study was to evaluate the incidence and trends of TMC-OA surgical treatment. PATIENTS AND METHODS: A nationwide hospital discharge register-based study was conducted among patients surgically treated for TMC-OA in Finland between 1997 and 2019. RESULTS: A total of 8,728 surgeries were performed. The annual surgery incidence increased 10-fold from 1997 to 2019. The incidence was higher in women and increased the most in the age groups of 50-59 and 60-69 years. TMC resection arthroplasty with or without ligament reconstruction and/or tendon interposition accounted for 91% of all surgeries. CONCLUSION: The increase in the surgical procedure rates is substantial. It is not explained by advancements in surgical treatment or by the ageing population. The indications for surgery appear to have become broader.

A Finnish Version of RAND-36-Item Health Survey Versus Structured Interview 8 Years Postoperatively.

BACKGROUND/AIM: The aim was to assess the 8-year health status after minicholecystectomy (MC) versus laparoscopic cholecystectomy (LC) for gallstone disease (GS) by using the RAND-36 Health Survey. PATIENTS AND METHODS: Initially, 88 patients with symptomatic GS disease were randomized to undergo either MC (n=44) or LC (n=44). RAND-36 survey was performed 8 years postoperatively. RESULTS: In three RAND-36 domains (social functioning, role physical, role emotional) MC procedure was significantly better than LC. In MC patients, the 8-year postoperative scores of social functioning (p<0.001), role physical (p=0.002) and role emotional (p<0.001) were significantly higher than the age- and gender -adjusted Finnish reference scores. CONCLUSION: The Finnish version of the RAND-36 survey can be used as a valid and reliable method for measuring the quality of life and long-term outcome of cholecystectomy patients following surgery.

Platelet-rich plasma versus corticosteroid injection for treatment of trigger finger: study protocol for a prospective randomized triple-blind placebo-controlled trial.

BACKGROUND: Trigger finger is a common hand disorder that limits finger range of motion and causes pain and snapping of the affected finger. Trigger finger is caused by an imbalance of the tendon sheath and the flexor tendon. The initial treatment is generally a local corticosteroid injection around the first annular (A1) pulley. However, it is not unusual that surgical release of the A1 pulley is required. Moreover, adverse events after local corticosteroid injection or operative treatment may occur. Platelet-rich plasma (PRP) has been shown to be safe and to reduce symptoms in different tendon pathologies, such as DeQuervain's disease. However, the effects of PRP on trigger finger have not been studied. The aim of this single-center triple-blind randomized controlled trial is to study whether PRP is non-inferior to corticosteroid injection in treating trigger finger. The secondary outcome is to assess the safety and efficacy of PRP in comparison to placebo. METHODS: The trial is designed as a randomized, controlled, patient-, investigator-, and outcome assessor-blinded, single-center, three-armed 1:1:1 non-inferiority trial. The patients with clinical symptoms of trigger finger will be randomly assigned to treatment with PRP, corticosteroid, or normal saline injection. The primary outcome is Patient-Rated Wrist Evaluation and symptom resolution. Secondary outcomes include Quick-Disabilities of the Arm, Shoulder and Hand; pain; grip strength; finger active range of motion; and complications. Appropriate statistical methods will be applied. DISCUSSION: We present a novel RCT study design on the use of PRP for the treatment of trigger finger compared to corticosteroid and normal saline injection. The results of the trial will indicate if PRP is appropriate for the treatment of trigger finger. TRIAL REGISTRATION: ClinicalTrials.gov NCT04167098 . Registered on November 18, 2019.

The Induction of Antioxidant Catalase Enzyme With Decrease of Plasma Malonidialdehyde: An Important Reactive Oxidative Species Inhibiting Mechanism.

BACKGROUND/AIM: The simultaneous increase of antioxidant CAT (catalase) enzyme and plasma MDA (malonidialdehyde) concentrations versus the numeric rating scale (NRS) pain score following surgery is unknown. Patients and Methods: The study included 114 patients with gallstone disease and 29 patients in the cancer group. RESULTS: Following surgery, the plasma CAT concentrations increased and plasma MDA concentrations decreased in all patients and especially in cancer patients. The linear mixed model time-effect was statistically significant in CAT and MDA (p<0.001 and p=0.02, respectively). In addition, a significant correlation between NRS pain score values and plasma MDA median concentrations in cancer patients was identified (r=0.430, p<0.001). CONCLUSION: The plasma MDA concentrations decreased and CAT concentrations increased significantly in all patients and especially in cancer patients following surgery. The simultaneous increase of antioxidant CAT enzyme with the decrease of plasma MDA may be an important ROS inhibiting mechanism to help patients return to normal antioxidant-oxidant status.

Deterioration of initially accepted radiological alignment of conservatively treated AO type-C distal radius fractures: mid-term outcome.

BACKGROUND AND AIMS: It still remains controversial how often the once-accepted radiological alignment of an AO type-C distal radius fracture deteriorates after conservative treatment, and to what extent this deterioration is perhaps associated with patient-rated outcome measures (PROms). Thus, we aimed to evaluate this radiological deterioration and its association with mid-term functional follow-up. PATIENTS AND METHODS: We retrospectively reviewed 66 patients (mean age at fracture 53 years, SD 14.1, range 18-73, female 65%) with 68 C-type distal radius fractures at a mean of 6.7 years (SD 0.5 years, range 5.8-7.7 years) after primary closed reduction and cast immobilization. Radiographs of the wrists were taken and analysed for any radial shortening, dorsal tilt or step-off at the joint surface. Range of motion and grip strength were measured. In addition to the radiological result, primary outcome measures included Quick Disabilities of the Arm, Shoulder and Hand (QDash) and Patient-Rated Wrist Evaluation (PRWE). RESULTS: At mid-term follow-up, an acceptable anatomical radiological result was seen in only 22 wrists (32%). Deterioration of the once-achieved and accepted primary alignment was seen in a majority of cases (68%). Radial shortening of ≥ 2 mm was found in 34 wrists (51%, mean 4 mm, range 2-8 mm), with no association with QDash (12.8 vs. 5.5, p = 0.22) or PRWE (9.1 vs. 5.7, p = 0.40). Only four patients (6%) showed step-off at the joint surface (mean 1.1 mm, range 0.5-2 mm). Twenty-two wrists (32%) showed dorsal tilt of ≥ 10° (five with volar tilt of 15°-25°), with no effect on QDash or PRWE (14.7 vs. 6.5, p = 0.241 and 10.1 vs. 5.8, p = 0.226). Altogether, patients with dorsal tilt, step-off or shortening did not show significantly worse QDash (10.3 vs. 5.7, p = 0.213) or PRWE (8.1 vs. 5.1, p = 0.126) versus those with none. Twenty-nine (43%) of the patients had deficits in range of motion (ROM), either in extension (39%), flexion (43%), supination (16%) or pronation (4%), or combinations of these. Worse extension was associated with worse QDash (15.9 vs. 5.0, p = 0.037), flexion deficit with worse PRWE (11.5 vs. 4.4, p = 0.005) and supination deficit with both QDash (21.7 vs. 6.8, p = 0.025) and PRWE (18.9 vs. 5.2, p = 0.007). CONCLUSIONS: The initially accepted radiological alignment of AO type-C radius fractures deteriorated in a majority of cases during conservative treatment. However, this deterioration was fairly mild and showed no significant association with functional outcome. Restricted ROM showed some association with PROms. LEVEL OF EVIDENCE: IV.

RAND-36-Item Health Survey: A Comprehensive Test for Long-term Outcome and Health Status Following Surgery.

BACKGROUND/AIM: The aim of this study was to assess the 3-year health status of cholecystectomy patients by the RAND-36 Survey. PATIENTS AND METHODS: Initially, 110 patients with symptomatic gallstone disease were randomized to undergo either minicholecystectomy (MC) (n=58) or laparoscopic cholecystectomy (LC) (n=52). RAND-36 survey was performed preoperatively, 4 weeks, 6 months and 3 years following surgery. RESULTS: RAND-36 scores improved in several RAND-36 domains in MC and LC groups with a similar postoperative course over the 3-year study period. In addition, at the 3-year follow-up telephone interview, no significant differences in patient-reported outcome measures between MC and LC patients were shown. The linear mixed effect model was used to test the overall significance of the RAND-36 survey during a 36-month follow-up period and the overall p-values were statistically significant in vitality, mental health (0.03), role physical and bodily pain domains. CONCLUSION: During the three years following cholecystectomy, four RAND-36 domains remained significantly higher, indicating a significant positive change in quality of life. RAND-36-Item Health Survey is a comprehensive test for analyzing long-term outcome and health status after cholecystectomy.

Nitrotyrosine (NT), a Nitrosative Stress Biomarker, Plasma Concentrations in Gallstone Disease and Cancer Patients.

BACKGROUND/AIM: The aim of this study was to assess the plasma concentration of the nitrosative stress biomarker nitrotyrosine (NT) in gallstone disease and cancer patients. MATERIALS AND METHODS: Initially, 114 patients with symptomatic gallstone disease were randomized into the laparoscopic cholecystectomy (LC) (n=54) and the minicholecystectomy (MC) (n=60) groups. The plasma concentrations of NT were measured just before, immediately after (POP1) and 6 h after operation (POP2). The cancer patients of this study included ten patients with gastrointestinal cancer and 19 patients with gynecological cancer. RESULTS: There was a statistically significant correlation in the median plasma NT concentrations versus plasma catalase (CAT) concentrations in cholecystectomy patients (r=0.169, p=0.001). Interestingly, there was a statistically significant inverse correlation between the individual values of the pain assessed and filed using a 11-point numeric rating scale 8 h postoperatively (NAD8) and plasma NT median values in cholecystectomy patients (r=-0.337, p=0.004). CONCLUSION: Patients with high plasma concentrations of NT appeared to have significantly lower pain scores 8 h postoperatively.

Cholecystectomy Patients with High Plasma Level of Catalase Have Significantly Lower Analgesia Requirement: A Prospective Study of Two Different Cholecystectomy Techniques with Special Reference to Patients with Cancer.

BACKGROUND/AIM: The plasma level of the oxidative stress biomarker catalase in patients with gallstone disease has not been previously compared with that of patients with cancer. Moreover, the number of analgesic doses required during the first 24 h postoperatively (NAD24) after laparoscopic cholecystectomy (LC) or mini-cholecystectomy (MC) in patients with gallstones is unreported. The aim of the present study was to determine the correlation between the plasma catalase level in patients with gallstones according to cholecystectomy technique versus patients with cancer. PATIENTS AND METHODS: Initially, 114 patients with symptomatic gallstone disease were randomized into LC (n=54) or MC (n=60) groups. The plasma level of catalase was measured immediately before, immediately after and 6 hours after operation. RESULTS: The median plasma catalase levels preoperatively and following surgery in the LC and MC patients versus those with cancer did not differ statistically significantly. The median plasma level of catalase increased immediately after operation, but the alteration was statistically insignificant (p=0.132). Interestingly, there was a statistically significant weak inverse correlation between the individual NAD24 and median plasma catalase values postoperatively in patients with gallstone disease (r=-0.283, p=0.042). CONCLUSION: The plasma catalase levels preoperatively and following surgery in the LC and MC patients versus those with cancer were quite similar. Cholecystectomy patients with high plasma levels of catalase appeared to require significantly fewer analgesic doses during the first 24 hours postoperatively (NAD24), suggesting that better oxidative balance following surgery could have a protective role against postoperative pain.

Gallstone Patients with Enhanced Oxidative Stress Biomarker Superoxide Dismutase (SOD1) Plasma Levels Have Significantly Lower Number of Postoperative Analgesic Oxycodone Doses: A Prospective Study with Special Reference to Cancer Patients.

BACKGROUND/AIM: Oxidative stress biomarker superoxide dismutase (SOD1) plasma levels in operated gallstone patients versus cancer patients are unknown. In addition, the number of analgesic doses during the first 24 h postoperatively (NAD24) in gallstone patients operated with laparoscopic cholecystectomy (LC) or minicholecystectomy (MC) is unreported. The aim of the study was to determine a correlation between the plasma SOD1 levels in the LC and MC patients versus cancer patients. PATIENTS AND METHODS: Initially, 114 patients with symptomatic gallstone disease were randomized into LC (n=54) or MC (n=60) groups. The plasma levels of the SOD1 marker were measured just before, immediately after (POP1) and 6 h after the operation (POP2). RESULTS: The median plasma SOD1 levels preoperatively and following surgery in the LC and MC patients versus cancer patients were statistically insignificant (p=0.90, p=0.88, p=0.21, respectively). The median plasma levels of SOD1 increased immediately after operation (POP1) and the postoperative elevation between the preoperative (PRE) and the POP1 values in the SOD1 marker were statistically significant (p=0.027). Then the median plasma levels of SOD1 marker decreased 6 h postoperatively (POP2) and the decrease between the POP1 and POP2 values in the SOD1 marker were statistically highly significant (p<0.001). There is a highly significant inverse correlation between the individual values of the NAD24 and plasma SOD1 values postoperatively in LC and MC patients (r=-0.335, p=0.011). CONCLUSION: The plasma SOD1 levels preoperatively and following surgery in the LC and MC patients versus cancer patients were quite similar. Cholecystectomy patients with enhanced levels of SOD1 appeared to have significantly lower number of analgesic oxycodone doses during the first 24 h postoperatively (NAD24).