Prevalence of malpractice claims after arthroscopic shoulder surgery: analysis of 69,097 procedures from a national registry in Norway.

BACKGROUND: Systematic analysis of compensation claims following patient injuries is helpful in improving patient safety. The objective of the current study was to assess compensation claims after arthroscopic treatment of rotator cuff ruptures, impingement, and acromioclavicular joint osteoarthritis reported to the Norwegian System of Patient Injury Compensation and evaluate if there was regional variation on the risk of patient injuries leading to an accepted compensation claim. METHODS: Data from the Norwegian System of Patient Injury Compensation and the Norwegian Patient Registry (NPR) from 2008 to 2018 were collected. Demographics (age and sex) and type of claim and reasons for accepted claims were obtained from the Norwegian System of Patient Injury Compensation, while the number of arthroscopic procedures was collected from NPR. The treating institutions were grouped on geography according to Norway's four regional Health Trusts and private institutions and the effect of geography on the probability of an accepted claim was estimated. RESULTS: NPR registered 69,097 shoulder arthroscopies during the study period, of which 216 (0.3%) compensation claims were filed for patient injury. A total of 38% of the claims were accepted, representing 0.1% of the arthroscopic procedures. Infection (37.8%) was the most common reason for accepted claim, followed by no surgical indication (15.9%) and wrong surgical technique (12.2%). We found a statistically significantly increased odds ratio for a claim being accepted in both the smallest and largest regional Health Trusts compared to the other regional Health Trusts and private institutions. CONCLUSIONS: Compensation claims due to patient injury following shoulder arthroscopy are rare (0.3% of patients file a claim, of which a third is accepted (0.1% of all shoulder arthroscopy patients)). The most common reason for accepted claim was infection followed by lack of indication.

Compensation Claims After Hip Fracture Surgery in Norway 2008-2018.

Background: Surgical complications contribute to the significant mortality following hip fractures in the elderly. The purpose of this study was to increase our knowledge of surgical complications by evaluating compensation claims following hip fracture surgery in Norway. Further, we investigated whether the size and location of performing institutions would influence surgical complications. Methods: We collected data from the Norwegian System of Patient Injury Compensation (NPE) and the Norwegian Hip Fracture Register (NHFR) from 2008 to 2018. We classified institutions into 4 categories based on annual procedure volume and geographical location. Results: 90,601 hip fractures were registered in NHFR. NPE received 616 (.7%) claims. Of these, 221 (36%) were accepted, which accounts for .2% of all hip fractures. Men had nearly a doubled risk of ending with a compensation claim compared to women (OR: 1.8, CI, 1.4-2.4, P < .001). Hospital-acquired infection was the most frequent reason for accepted claims (27%). However, claims were rejected if patients had underlying conditions predisposing to infection. Institutions treating fewer than 152 hip fractures (first quartile) annually, had a statistically significant increased risk (OR: 1.9, CI, 1.3-2.8, P = .005) for accepted claims compared to higher volume facilities. Discussion: The fewer registered claims in our study could be due to the relatively high early mortality and frailty in this patient group, which may decrease the likelihood of filing a complaint. Men could have undetected underlying predisposing conditions that lead to increased risk of complications. Hospital-acquired infection may be the most significant complication following hip fracture surgery in Norway. Lastly, the number of procedures performed annually in an institution influences compensation claims. Conclusions: Our findings indicate that hospital acquired infections need greater focus following hip fracture surgery, especially in men. Lower volume hospitals may be a risk factor.

Characteristics of Patients Who Complete Suicide and Suicide Attempts While Undergoing Treatment in Norway: Findings from Compensation Claims Records.

The aim of this study was to identify characteristics that differentiate patients who complete suicide (SC) from patients with suicide attempts (SA) while undergoing treatment in Norway. We examined data from the Norwegian System of Patient Injury Compensation (Norsk Pasientskade Erstatning-NPE). Data were extracted from NPE case records from a 10-year period (2009-2019) for 356 individuals who attempted (n = 78) or died by (n = 278) suicide. The two groups differed significantly in the types of medical errors identified by experts. Inadequate suicide risk assessment tended to be proportionally and significantly more prevalent among SC compared to SA. There was a weak but significant trend that SA had received medication only, whereas SC had received both medication and psychotherapy. There were no significant differences with respect to age group, gender, diagnostic category, number of previous suicide attempts, inpatient/outpatient status, or category of responsible clinic. We conclude that suicide attempters and suicide completers differed in terms of identified medical errors. Focusing on the prevention of these and other types of errors could help to reduce the number of suicides of patients in treatment.

Patients Who Die by Suicide: A Study of Treatment Patterns and Patient Safety Incidents in Norway.

Underlying patterns and factors behind suicides of patients in treatment are still unclear and there is a pressing need for more studies to address this knowledge gap. We analysed 278 cases of suicide reported to The Norwegian System of Patient Injury Compensation, drawing on anonymised data, i.e., age group, gender, diagnostic category, type of treatment provided, inpatient vs. outpatient status, type of treatment facility, and expert assessments of medical errors. The data originated from compensation claim forms, expert assessments, and medical records. Chi-square tests for independence, multinominal logistic regression, and Bayes factors for independence were used to analyse whether the age group, gender, diagnostic category, inpatient/outpatient status, type of institution, and type of treatment received by patients that had died by suicide were associated with different types of medical errors. Patients who received medication tended to be proportionally more exposed to an insufficient level of observation. Those who received medication and psychotherapy tended to be proportionally more exposed to inadequate treatment, including inadequate medication. Inpatients were more likely to be exposed to inappropriate diagnostics and inadequate treatment and follow up while outpatients to insufficient level of observation and inadequate suicide risk assessment. We conclude that the patients who had received medication as their main treatment tended to have been insufficiently observed, while patients who had received psychotherapy and medication tended to have been provided insufficient treatment, including inadequate medication. These observations may be used as learning points for the suicide prevention of patients in treatment in Norwegian psychiatric services.

Ureteric injuries during hysterectomy-A Norwegian retrospective study of occurrence and claims for compensation over an 11-year period.

INTRODUCTION: Ureteric injury is a rare but serious, iatrogenic complication of hysterectomy. The risk depends on indication for surgery, predisposing risk factors, and peroperative conditions. Our aims were to evaluate and learn from compensation claims to The Norwegian System of Patient Injury Compensation (NPE) for ureteric injury occurring during hysterectomies to predict risk factors, time of identification, symptoms, and consequences, and to relate these cases to injuries registered in The Norwegian Patient Registry. MATERIAL AND METHODS: A retrospective study of ureteric injuries occurring during hysterectomies, reported to NPE and the Norwegian Patient Registry from 2009 through 2019. RESULTS: During the study period, 53 096 hysterectomies were registered in The Norwegian Patient Registry, of which ureteric injury was documented in 643 (1.2%). More ureteric injuries were registered in large hospital trusts than in small trusts (1.3% vs. 0.7%, p < 0.05). NPE received 69 claims due to ureteric injury occurring during hysterectomy, comprising 11% of all injuries in the study period. Compensation was approved for 15%. Women who claimed compensation were younger (48.1 ± 8.9 years vs. 55.1 ± 13.6 years, p < 0.01), more likely to have had a benign diagnosis (89.9% vs. 52.1%, p < 0.01), and more likely to have had the ureteric injury recognized after discharge (58.0% vs. 33.0%, p < 0.001) compared with non-complainants. Identification of the ureters during the hysterectomy was documented in 30% of the NPE patient files. Additional information for the NPE cases included the following. The most common symptoms of unidentified injury were pain (77%), fever (12%), urinary leakage (13%), and anuria (8%). Re-operation was necessary in 77% of the cases, and 10% of the women lost one kidney. Long-term consequences after repair, such as loss of a kidney or persistent pain, were seen in 17%. No women died because of the injury. CONCLUSIONS: The incidence of ureteric injury occurring during hysterectomy in Norway was 1.2%; 11% involved a claim for compensation, and 15% of these had their case approved. Most ureteric injuries were not recognized during the hysterectomy. Documentation of peroperative identification of the ureters during hysterectomy was often missing. Vigilance to pain as a postoperative symptom of peroperative unrecognized ureteric injury may result in earlier diagnosis and treatment.

Compensation claims in pediatric orthopedics in Norway between 2012 and 2018: a nationwide study of 487 patients.

Background and purpose - In Norway all compensation claims based on healthcare services are handled by a government agency (NPE, Norsk Pasientskade Erstatning). We provide an epidemiological overview of claims within pediatric orthopedics in Norway, and identify the most common reasons for claims and compensations.Patients and methods - All compensation claims handled by NPE from 2012 to 2018 within pediatric orthopedics (age 0 to 17 years) were reviewed. Data were analyzed with regard to patient demographics, diagnoses, type of injury, type of treatment, reasons for granted compensation, and total payouts.Results - 487 compensation claims (259 girls, 228 boys) within orthopedic surgery in patients younger than 18 years at time of treatment were identified. Mean age was 12 years (0-17). 150 out of 487 claims (31%) resulted in compensation, including 79 compensations for inadequate treatment, 58 for inadequate diagnostics, 12 for infections, and 1 based on the exceptional rule. Total payouts were US$8.45 million. The most common primary diagnoses were: upper extremity injuries (26%), lower extremity injuries (24%), congenital malformations and deformities (12%), spine deformities (11%), disorders affecting peripheral joints (9%), chondropathies (6%), and others (12%).Interpretation - Most claims were submitted and granted for mismanagement of fractures in the upper and lower extremity, and mismanagement of congenital malformations and disorders of peripheral joints. Knowledge of the details of malpractice claims should be implemented in educational programs and assist pediatric orthopedic surgeons to develop guidelines in order to improve patient safety and quality of care.

Compensation claims after hip arthroplasty surgery in Norway 2008-2018.

Background and purpose - Orthopedic surgery is one of the specialties with most compensation claims, therefore we assessed the most common reasons for complaints following total hip arthroplasty (THA) reported to the Norwegian System of Patient Injury Compensation (NPE) and viewed these complaints in light of the data from the Norwegian Arthroplasty Register (NAR).Patients and methods - We collected data from NPE and NAR for the study period (2008-2018), including age, sex, and type of complaint, and reason for accepted claims from NPE, and the number of arthroplasty surgeries from NAR. The institutions were grouped by quartiles into quarters according to annual procedure volume, and the effect of hospital procedure volume on the risk for accepted claim was estimated.Results - 70,327 THAs were reported to NAR. NPE handled 1,350 claims, corresponding to 1.9% of all reported THAs. 595 (44%) claims were accepted, representing 0.8% of all THAs. Hospital-acquired infection was the most common reason for accepted claims (34%), followed by wrong implant position in 11% of patients. Low annual volume institutions (less than 93 THAs per year) had a statistically significant 1.6 times higher proportion of accepted claims compared with higher volume institutions.Interpretation - The 0.8% risk of accepted claims following THAs is 1.6 times higher for patients treated in low-volume institutions, which should consider increasing the volume of THAs or referring these patients to higher volume institutions.

Compensation claims after knee arthroplasty surgery in Norway 2008-2018.

Background and purpose - Orthopedic surgery is one of the specialties with most compensation claims. We assessed the claims following knee arthroplasty surgery reported to the Norwegian System of Patient Injury Compensation (NPE) in light of institutional procedure volume.Patients and methods - We collected data from NPE and the Norwegian Arthroplasty Register (NAR) for the study period (2008-2018). Age, sex, type of claim, and reason for compensation were collected from NPE, while the number of arthroplasty surgeries was collected from NAR. The treating hospitals were grouped by quartiles according to annual procedure volume. The effect of hospital volume on the likelihood of an accepted claim was estimated.Results - NAR received 64,241 reports of arthroplasty procedures, of which 572 (0.9%) patients filed a claim for treatment injury. 55% of the claims were accepted, representing 0.5% of all knee arthroplasties. The most common reason for accepted claim was a hospital-acquired infection, in 28% of the patients, followed by misplaced implant (26%) and aseptic loosening (13%). The hospitals with the lowest annual volume (57 or fewer arthroplasties per year, first quarter) had a statistically significantly larger fraction of granted claims per procedures compared with other institutions.Interpretation - The overall risk of ending up with compensation due to treatment error following knee arthroplasty was 0.5%. The risk of accepted claim was greater for patients operated in the lowest volume hospitals.

Patient-reported 'treatment injuries' after hand surgery. A review of 1321 claims submitted to the Norwegian system of patient injury compensation 2007-2017.

OBJECTIVE: Hand surgery makes up a large proportion of procedures, ranging from simple to complex. Increased complexity places greater demand on hand surgery competence. Furthermore, when surgical expertise is not matched to the procedure complexity, treatment injuries might occur. The purpose of this study was to assess patient-reported claims submitted to The Norwegian System of Patient Injury Compensation (NPE). METHODS: We examined all hand surgery claims submitted to NPE between 1 January 2007 and 30 June 2017. NPE records patient demography and variables, such as diagnosis, type of injury, injury location, the reason for the compensation claim, and whether a claim was accepted or rejected. RESULTS: NPE received 1321 claims related to treatment injuries from hand surgery at a steady rate throughout the study period. A total of 532 claims were accepted (40.3%). The approval rate for trauma cases was significantly higher than for elective cases (45.5 vs. 34.2%, p < .05). The most common diagnoses were hand fractures, dislocations and ligament injuries, carpal tunnel syndrome and arthrosis of the first carpometacarpal joint. Tendon injuries had the highest percentage of accepted claims (52.6%). The most common reason for claims being accepted was 'failure of treatment'. 19.7% of these involved a disability percentage >15%. Elective surgery accounted for ⅔ of the approved disability cases. CONCLUSIONS/INTERPRETATION: This is the first national study of patient-reported injuries after hand surgery treatment in Norway. The proportion of accepted claims is similar to that seen for orthopaedics. Acceptance levels were, however, higher for hand trauma cases than for disorders treated electively. ABBREVIATIONS: NPE: Norwegian system of patient injury compensation; SD: standard deviation; CT: computed tomography; MRI: magnetic resonance imaging; UiT: University of Tromsø - Arctic University of Norway.

Correlation between compensated patient claims and 30-day mortality.

OBJECTIVE: To test if compensation claims from patients (reported to the Norwegian System of Patient Injury Compensation) are correlated with the existing quality indicator of 30-day mortality (based on data from Norwegian Patient Registry). This correlation has not been previously evaluated. DESIGN: The association between patient claims and 30-day mortality at hospital trust level was assessed by the Pearson correlation coefficient. SETTING: The Norwegian System of Patient Injury Compensation is a governmental agency under the Ministry of Health and Care Services and deals with patient-reported complaints about incorrect treatment in the public and private healthcare services. Patient-reported claims may be an indicator of healthcare quality, as 30-day mortality. PARTICIPANTS: All 19 Norwegian hospital trusts. INTERVENTIONS: : None. MAIN OUTCOME MEASURE: Patient claims rates, 30-day mortality and Pearson correlation coefficient. RESULTS: Both number of deaths within 30 days and number of claims have declined over time. High correlation (0.77, P < 0.001) was found between number of deaths within 30 days and the total number of claims. In addition, an even stronger association was found with approved claims, with a correlation coefficient of 0.83 (P < 0.001). Moreover, adjusted 30-day mortality was significantly correlated with the patient-claim rate using number of bed-days as denominator, but not when using number of discharges. CONCLUSIONS: The results from the present study indicate an association between compensation claims from patients and 30-day mortality, suggesting that both parameters reflect the latent quality of care for the hospital trusts, but they may capture different aspects of care.

Claims for compensation from women with cervical cancer in Norway-A retrospective, descriptive study of a 12-year period.

INTRODUCTION: In Norway, all patient-reported claims for compensation are evaluated by The Norwegian System of Patient Injury Compensation (NPE). The number of claims from women with cervical cancer is rising, and the approval rate is high. Our aim was to study claims for compensation from women with cervical cancer to identify the type of failures, when, during the time-course of treatment, the medical failures occurred, and the consequences of the failures. MATERIAL AND METHODS: A retrospective, descriptive study of claims for compensation to NPE from cervical cancer patients during a 12-year period, from 2007 through 2018. We used anonymized medical expert statements and summaries of NPE cases. RESULTS: In all, 161 women claimed compensation for alleged medical failure related to cervical cancer. Compensation was approved for 100 (62%) women. Mean age at the time of alleged failure was 37.5 years (SD ±9.9). The main reasons why women sought medical attention were routine cervical screening (56%), or vaginal bleeding or discharge (30%). In approved cases, incorrect evaluation of cytology and histology was the cause of most failures (72%). Mean delay of cervical cancer diagnosis for approved cases was 28 months (SD ±22). Treatment not in accordance with guidelines was the cause of failure in 2% of the cases, and failure during follow up was the cause of failure in 12%. Consequences of the failures were as follows: worsening of cancer prognosis (89%), treatment-induced adverse effects, such as loss of fertility (43%) and/or loss of ovarian function in premenopausal women (50%), and permanent injury after chemo-radiation (27%). Seven women (7%) died, most probably as a consequence of the failure. CONCLUSIONS: The main cause of medical failure in women with cervical cancer was incorrect pathological diagnosis. The main consequences of failures were worsening of cancer prognosis and treatment-induced adverse effects. Increased focus on the quality of pathological examinations, and better routines in all parts of the cervical examinations might improve patient safety for women in risk of cervical cancer.

Patient injuries reported to the Norwegian System of Patient Injury Compensation 2011­17. / Pasientskader hos fastleger meldt til Norsk pasientskadeerstatning 2011­17.

BACKGROUND: The Norwegian System of Patient Injury Compensation (NPE) processes compensation claims from patients who believe that they have sustained injuries during treatment in the health services. The number of cases reported to NPE has tended to increase in recent years. The purpose of this study was to obtain an overview of patient-reported injuries within the regular GP scheme. MATERIAL AND METHOD: We studied all injuries to patients within the regular GP scheme in NPE in the years 2011-17. The cases of injury contained information on age, sex, diagnosis, location of the injury and compensation paid, as well as texts describing the treatment and injury. RESULTS: Out of a total of 33 748 compensation claims submitted to NPE, 3 135 cases originated from the regular GP scheme. Of the group of claimants 53 % were women, and the average age was 44.7 years (standard deviation 17.7 years). Altogether 760 (24 %) of the cases were upheld. Diagnostic error was the reason for 553 (73 %) of the cases being upheld. The groups most frequently represented were 'tumours and cancers' (847 (27 %) of the claims) and 'orthopaedics' (592 (19 %) of the claims). INTERPRETATION: The regular GP scheme accounts for many patient contacts, and a review of patient injuries may make it possible to prevent future failures.

Performance measures among non-immigrants and immigrants attending BreastScreen Norway: a population-based screening programme.

OBJECTIVES: To explore performance measures among non-immigrants and immigrants attending BreastScreen Norway. METHODS: We analysed data from 2,951,375 screening examinations among non-immigrants and 153,026 among immigrants from 1996 to 2015. Immigrants were categorised into high- and low-incidence countries according to the incidence of breast cancer in their birth country. Performance measures, including attendance and recall rates, rates of screen-detected cancer (SDC) and interval breast cancer (IBC), positive predictive value (PPV) and histopathological tumour characteristics, were analysed. We used Fisher's exact model and t tests for descriptive statistics, and Poisson regression, adjusting for age and screening history, comparing results for non-immigrants versus immigrants. RESULTS: Attendance rates were 78% for non-immigrants and 56% for immigrants (p < 0.001). Rates of prevalent screens were 24% for non-immigrants and 32% for immigrants (p < 0.001). Immigrants from low-incidence countries were younger at diagnosis than non-immigrants (57 years versus 60 years, p < 0.001). Recall rates were 3.1% for non-immigrants and 3.8% for immigrants (p < 0.001), while PPVs were 17% and 14% (p < 0.001), respectively. IBCs in immigrants from low-incidence countries were more often triple negative (RRadj 1.81, 95% CI 1.11-2.94) than those in non-immigrants. Both SDC and IBC in immigrants from low-incidence countries tended more often to be histological grade 3 than those in non-immigrants. CONCLUSION: Immigrants had lower attendance rates, higher recall rates and lower PPV than non-immigrants. The optimal age range and screening interval for immigrant women from low-incidence countries need to be further investigated. KEY POINTS: • Immigrants from countries with a low incidence of breast cancer had their breast cancer diagnosed at a younger age than non-immigrants. • Interval breast cancers detected in immigrants from countries with a low incidence of breast cancers were more often triple negative than those in non-immigrants. • The optimal age range and screening interval for immigrant women from low-incidence countries and non-immigrants might differ.

Somatic EP300-G211S mutations are associated with overall somatic mutational patterns and breast cancer specific survival in triple-negative breast cancer.

PURPOSE: We have compared the mutational profiles of human breast cancer tumor samples belonging to all major subgroups with special emphasis on triple-negative breast cancer (TNBC). Our major goal was to identify specific mutations that could be potentially used for clinical decision making in TNBC patients. PATIENTS AND METHODS: Primary tumor specimens from 149 Norwegian breast cancer patients were available. We analyzed the tissue samples for somatic mutations in 44 relevant breast cancer genes by targeted next-generation sequencing. As a second confirmatory technique, we performed pyrosequencing on selected samples. RESULTS: We observed a distinct subgroup of TNBC patients, characterized by an almost completely lack of pathogenic somatic mutations. A point mutation in the adenoviral E1A binding protein p300 (EP300-G211S) was significantly correlated to this TNBC subgroup. The EP300-G211S mutation was exclusively found in the TNBC patients and its presence reduced the chance for other pathological somatic mutations in typical breast cancer genes investigated in our gene panel by 94.9% (P < 0.005). Interestingly, the EP300-G211S mutation also predicted a lower risk for relapses and decreased breast cancer-specific mortality during long-term follow-up of the patients. CONCLUSION: Next-generation sequencing revealed specific mutations in EP300 to be associated with the mutational patterns in typical breast cancer genes and long-term outcome of triple-negative breast cancer patients.

In breast cancer subtypes steroid sulfatase (STS) is associated with less aggressive tumour characteristics.

BACKGROUND: The majority of breast cancer cases are steroid dependent neoplasms, with hormonal manipulation of either CYP19/aromatase or oestrogen receptor alpha axis being the most common therapy. Alternate pathways of steroid actions are documented, but their interconnections and correlations to BC subtypes and clinical outcome could be further explored. METHODS: We evaluated selected steroid receptors (Androgen Receptor, Oestrogen Receptor alpha and Beta, Glucocorticoid Receptor) and oestrogen pathways (steroid sulfatase (STS), 17ß-hydroxysteroid dehydrogenase 2 (17ßHSD2) and aromatase) in a cohort of 139 BC cases from Norway. Using logistic and cox regression analysis, we examined interactions between these and clinical outcomes such as distant metastasis, local relapse and survival. RESULTS: Our principal finding is an impact of STS expression on the risk for distant metastasis (p<0.001) and local relapses (p <0.001), HER2 subtype (p<0.015), and survival (p<0.001). The suggestion of a beneficial effect of alternative oestrogen synthesis pathways was strengthened by inverted, but non-significant findings for 17ßHSD2. CONCLUSIONS: Increased intratumoural metabolism of oestrogens through STS is associated with significantly lower incidence of relapse and/or distant metastasis and correspondingly improved prognosis. The enrichment of STS in the HER2 overexpressing subtype is intriguing, especially given the possible role of HER-2 over-expression in endocrine resistance.

Compensation after treatment for anterior cruciate ligament injuries: a review of compensation claims in Norway from 2005 to 2015.

PURPOSE: To assess the most common reasons for complaints following anterior cruciate ligament (ACL) injuries reported to the Norwegian System of Patient Injury Compensation (NPE), and to view these complaints in light of the ACL reconstructions (ACL-Rs) reported to the Norwegian Knee Ligament Registry (NKLR). METHOD: Data from the NPE and the NKLR were collected for the study period (2005-2015). The age and gender and type of complaint and reason for granted compensation were collected from the NPE, while the graft choice and total number of ACL-R were collected from the NKLR. Risk for successful grant was estimated for graft type. RESULTS: 18,810 primary ACL-Rs were reported to the NKLR during the study period. A hamstring graft was used in 12,437 (66.1%) but the bone-patellar tendon-bone (BPTB) became the graft of choice at the end of the study period. 240 patients filed a complaint to the NPE, of which 101 were granted compensation. The odds ratio for a claim being granted following a hamstring graft was 2.9 compared to that of a BPTB graft (p = 0.002) The most common reason for compensation was a hospital-acquired infection in 39 patients (38.6%) followed by inadequate surgical technique (27, 26.7%) and delayed diagnosis (13, 12.9%). Of the 39 patients with infection, 27 had received a hamstring graft and six a BPTB graft (two patients were not reconstructed, data missing for three patients). Of the 27 patients who were granted compensation due to inadequate surgical technique, 24 had received a hamstring graft and three a BPTB graft. CONCLUSION: Infection and inadequate surgical technique are the most common causes for granted compensation from the NPE following ACL injury. Hamstring grafts have a threefold risk of complication that yields compensation from the NPE compared to BPTB grafts. This information is relevant for patients and surgeons when choosing graft type. The trend of increased use of BPTB grafts is warranted based on the results from this study. LEVEL OF EVIDENCE: Level III.

Pathology-related cases in the Norwegian System of Patient Injury Compensation in the period 2010-2015. / Patologirelaterte saker i pasientskadeordningen i perioden 2010 ­ 15.

BACKGROUND: The Norwegian System of Patient Injury Compensation (NPE) processes compensation claims from patients who complain about malpractice in the health services. A wrong diagnosis in pathology may cause serious injury to the patient, but the incidence of compensation claims is unknown, because pathology is not specified as a separate category in NPE's statistics. Knowledge about errors is required to assess quality-enhancing measures. We have therefore searched through the NPE records to identify cases whose background stems from errors committed in pathology departments and laboratories. MATERIAL AND METHOD: We have searched through the NPE records for cases related to pathology for the years 2010 ­ 2015. RESULTS: During this period the NPE processed a total of 26 600 cases, of which 93 were related to pathology. The compensation claim was upheld in 66 cases, resulting in total compensation payments amounting to NOK 63 million. False-negative results in the form of undetected diagnoses were the most frequent grounds for compensation claims (63 cases), with an undetected malignant melanoma (n = 23) or atypia in cell samples from the cervix uteri (n = 16) as the major groups. Sixteen cases involved non-diagnostic issues such as mix-up of samples (n = 8), contamination of samples (n = 4) or delayed responses (n = 4). INTERPRETATION: The number of compensation claims caused by errors in pathology diagnostics is low in relative terms. The errors may, however, be of a serious nature, especially if malignant conditions are overlooked or samples mixed up.

Complaints to the Norwegian System of Patient Injury Compensation 2001-14 following nerve blockade. / Klager etter nerveblokade til Norsk pasientskadeerstatning 2001 ­ 14.

BACKGROUND: There has been a steady increase in cases reported to the Norwegian System of Patient Injury Compensation (NPE). We wished to look into what might characterise those cases of central and peripheral nerve blockade for anaesthesia that led to compensation claims. MATERIAL AND METHOD: Cases with codes for central and peripheral blockade within the field of anaesthesiology were retrieved from the NPE database for the period 2001 ­ 14. The cases were evaluated on the basis of variables including sex, age, type of anaesthesia, diagnosis, type of injury, site of injury, damages received, and written descriptions of treatment and injury. The expert reports were anonymised and reviewed in detail. RESULTS: A total of 339 patient compensation claims relating to nerve blockade were identified, of which 149 concerned spinal anaesthesia, 142 epidural anaesthesia, 21 combined spinal and epidural anaesthesia and 27 peripheral nerve blockade. The group consisted of 236 women and 103 men, and the average age was 46 years. The 339 cases comprised 0.8 % of all cases reported to the NPE in this period. A total of 107 claims resulted in compensation. Eighty-two million Norwegian kroner were paid out in total. INTERPRETATION: Peripheral and central nerve blockade accounts for only a small proportion of cases handled by the NPE. Only one in three applicants had their claim upheld, but when claims were upheld, the injuries were often severe and led to substantial pay-outs.