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External quality assurance in hematology. The programme of the Royal College of Pathologists of Australasia.

The Royal College of Pathologists of Australasia introduced a comprehensive national external quality assurance programme (QAP) in hematology in 1979. This now provides regular monthly trials of full blood counting, supplemented by 3-monthly sets of samples for a large variety of other tests for "state of the art" studies, together with case slides for diagnosis for 294 participants. In addition educational supplements are provided, based on one or other aspect of each major quarterly trial. The frequency and variety of tests and analysis of participants' results conform to suggested standards for similar national schemes elsewhere in the world. There is evidence that the programme has helped raise the standards of hematopathology in Australasia and has identified areas which require improvement. It is envisaged that the scheme will satisfy the requirements of state legislation designed to accredit pathology laboratories. Future development should include a refinement of objective methods of scoring performance, especially in areas such as morphology where participants' results cannot readily be expressed numerically.

Asia↗

External quality assurance in microbiology. The programme of the Royal College of Pathologists of Australasia.

Since 1967 the Royal College of Pathologists of Australasia has been providing an external quality assurance programme in microbiology. The number of participants has risen from 70 to 222, and the samples distributed for investigation have increased in quantity, now totalling 35-40 per annum, and in variety, so that most aspects of clinical microbiology are now touched on. In recent years clerical accuracy and the adequacy of reports have been examined. However, more emphasis is needed on the stability of the specimens (freeze-drying will be introduced soon), the assessment of a laboratory's general performance, the standardization of methods and the educational aspects of external quality control.

Accreditation↗

Continuing medical education for pathologists: an evaluation of the Royal College of Pathologists' Wessex pilot scheme.

AIM: To discover the attitudes to continuing medical education (CME) of the Wessex pathologists who participated in the Wessex CME pilot scheme and to identify their preferences and difficulties in pursuing CME activities. METHOD: The views of pathologists in the scheme were collected during a period of one year using workshops and discussions. A confidential, anonymous postal questionnaire based on these issues was sent to the 103 pathologists in Wessex who participated in the pilot scheme. RESULTS: A 64% response rate was obtained. The respondents identified lack of time and funded study leave as major barriers to CME and highlighted the gap between CME activity and its recognition and funding by employers. They wanted a wide variety of locally based CME activities to be recognised, and they valued local activities that linked theory with practice. They believed that the college scheme tended to favour academic activities over more practical and locally based ones. They found the paired peer review process time consuming but valuable for identifying their learning needs in some cases, but demonstrated that they have mixed preferences about the way they do their CME. CONCLUSIONS: The Wessex pathologists believe that CME is important and have positive attitudes to it. Their attitudes to CME echo the current literature about what makes CME effective. Unless individuals' preferences and difficulties are taken into account, CME programmes in which they participate are not likely to succeed.

Attitude↗

The Warwick system of prospective workload allocation in cellular pathology--an aid to subspecialisation: a comparison with the Royal College of Pathologists' system.

BACKGROUND: Guidelines on staffing and workload for histopathology and cytopathology departments was published by the Royal College of Pathologists (RCPath) in July 2003. In this document, a system is provided whereby the workload of a cellular pathology department and individual pathologists can be assessed with a scoring system based on specialty and complexity of the specimens. A similar, but simplified, system of scoring specimens by specialty was developed in the Warwick District General Hospital. The system was based on the specimen type and suggested clinical diagnosis, so that specimens could be allocated prospectively by the laboratory technical staff to even out workload and support subspecialisation in a department staffed by 4.6 whole-time equivalent consultant pathologists. METHODS: The pathologists were asked to indicate their reporting preferences to determine specialist reporting teams. The workload was allocated according to the "prospective" Warwick system (based on specimen type and suggested clinical diagnosis, not affected by final diagnosis or individual pathologist variation in reference to numbers of blocks, sections and special stains examined) for October 2003. The cumulative Warwick score was compared with the "retrospective" RCPath scoring system for each pathologist and between specialties. Four pathologists recorded their time for cut-up and reporting for the month audited. RESULTS: The equitable distribution of work between pathologists was ensured by the Warwick allocation and workload system, hence facilitating specialist reporting. Less variation was observed in points reported per hour by the Warwick system (6.3 (range 5.5-6.9)) than by the RCPath system (11.5 (range 9.3-15)). CONCLUSIONS: The RCPath system of scoring is inherently complex, is applied retrospectively and is not consistent across subspecialities. The Warwick system is simpler, prospective and can be run by technical staff; it facilitates even workload distribution throughout the day. Subspecialisation within a small-sized or medium-sized department with fair distribution of work between pathologists is also allowed for by this system. Reporting times among pathologists were shown by time and motion studies to be more consistent with Warwick points per hour than with RCPath points per hour.

Cytodiagnosis↗

Royal College of Pathologists' United Kingdom pilot study of laboratory accreditation. The College Accreditation Steering Committee.

The Royal College of Pathologists recently commissioned a pilot study to assess the feasibility, desirability, and cost of establishing a national scheme for laboratory accreditation in the United Kingdom. Using a format similar to that designed by the College of American Pathologists, eight inspectors visited 24 laboratories comprising the major disciplines of two district hospitals, two teaching hospitals, a specialised (paediatric) hospital and a private hospital. Nine were considered accreditable without reservation, but 15 had deficiencies identified of differing importance which needed to be corrected before accreditation could be awarded. Problems identified were variable, but none related to technical performance and many did not require extra resources to correct. The exercise was conducted without organisational difficulty at an approximate direct cost of 300 pounds per laboratory. The study shows that the format used could form the basis of a cost effective nationwide strategy. The type of problems identified suggest that such a strategy is more likely to succeed if it is organised from within the pathology professions.

Accreditation↗

Royal College of Pathologists' accreditation pilot study: a year later. The College Audit Steering Committee.

Twenty one heads of departments who participated in the Royal College of Pathologists' pilot study of laboratory accreditation were questioned a year after the event to discover if the process had produced any lasting effect. All but one responded. Eighteen (90%) felt that there had been lasting and tangible benefit from their inspection. Of 10 departments with deficiencies relating to resources (and where no plans to upgrade existed before the study), five (50%) had obtained improvements as a direct result of the inspector's report. Overall, 16 (80%) of respondents were in support of the development of an accreditation scheme of the type attempted, and none were opposed. The envisaged scheme seems to have the potential to produce lasting improvements in service and commands the support of the departments involved so far.

Accreditation↗

Proactive management of histopathology workloads: analysis of the UK Royal College of Pathologists' recommendations on specimens of limited or no clinical value on the workload of a teaching hospital gastrointestinal pathology service.

AIMS: To investigate the effect on the workload of a gastrointestinal pathology service of implementing the recommendations of the Royal College of Pathologists' (RCPath) working party on specimens of limited or no clinical value (LONCV). METHODS: All endoscopic gastrointestinal pathology reports for the first three months of 2001 at a large teaching hospital were reviewed against the RCPath recommendations. Specimens in the category of LONCV were recorded and the final histopathology diagnosis noted. RESULTS: The biopsies in the LONCV category were 30% of oesophageal, 61% of gastric, 0.5% of duodenal, and 7% of colorectal origin. CONCLUSIONS: Implementing the RCPath recommendations would reduce the number of requests for the examination of gastrointestinal endoscopic specimens by 3500 specimens each year in this department. None of the specimens in the LONCV category showed an abnormality that could not have been detected by a more efficient and less invasive method. In the UK, where there is a severe shortage of trained histopathologists, the implementation of these recommendations would ensure that these scarce resources are not misused.

Biopsy↗

Factors predicting cases with unexpected clinical findings at necropsy.

AIMS/BACKGROUND: A major medical role for postmortem examinations is the detection of clinically unexpected disease processes contributing to death. The aim of the present study was to determine whether simple clinical parameters can predict the presence of important unanticipated findings at necropsy. METHODS: Prospective audit of adult necropsies carried out in a single year to assess the extent of unexpected findings at necropsy, to compare these cases with non-necropsied deaths to confirm they are a similar population and to seek features that predict which cases have unexpected necropsy findings. RESULTS: No correlation was found between age, sex, duration of in-hospital treatment, surgical intervention, clinical specialty, or necropsy request rates and incidence of unexpected findings in 187 adult necropsies. CONCLUSIONS: No parameters have been identified for patient selection to permit an increase in the yield of clinically unexpected findings. Until there is clear evidence that the current practice of patient selection is anything more than random, an increase in postmortem examination rates, as proposed by the Joint Working Party of the Royal College of Pathologists, the Royal College of Physicians of London and the Royal College of Surgeons of England in their report The Autospy and Audit, will increase the workload without necessarily producing a commensurate gain in knowledge.

Adult↗

Multilaboratory testing of thrombophilia: current and past practice in Australasia as assessed through the Royal College of Pathologists of Australasia Quality Assurance Program for Hematology.

We have conducted a series of multilaboratory surveys during the last 6 years to evaluate testing proficiency in the detection of congenital and acquired thrombophilia. For lupus anticoagulant (LA) testing, participant laboratories used a panel of tests, including activated partial thromboplastin time (aPTT; 100% of laboratories), kaolin clotting time (26 to 70%), and Russell's viper venom time (RVVT; 75 to 100%). Coefficients of variation (CVs) for assays ranged from 5 to 40%. RVVT assays appeared to be most sensitive and specific for detection of LA (fewer false-negatives or -positives), although laboratories performed best when they used a panel of tests. For congenital thrombophilia, tests evaluated comprised protein C (PC), protein S (PS), antithrombin (AT), and activated protein C resistance (APCR). Most participant laboratories performed PC using chromogenic (approximately 75%), or clot based (approximately 15%) assays, with few (< 10%) performing antigenic assessments. PS was most often assessed (approximately 60%) by immunological or antigenic assays, usually of free PS, or by functional or clot-based assays (approximately 40%). AT is usually assessed by functional chromogenic assays (approximately 95%). APCR was assessed using aPTT (approximately 50%) or RVVT (approximately 50%) clot-based assays, with the aPTT APCR typically performed using factor V-deficient plasma predilution, but the RVVT APCR typically performed without. Laboratories using the RVVT APCR generally performed better in detection of factor V Leiden-associated APCR, with the aPTT method group yielding higher false-negative and/or false-positive findings (approximately 5% of occasions). Some clot-based PC and PS assays appeared to be influenced by APCR status, and yielded lower apparent PC and PS levels with positive APC resistance. The overall error rate for PC, PS, and AT was approximately 2 to 8% (i.e., false-normal interpretations for deficient plasma or false-abnormal interpretations for normal plasma). The CVs for these assays ranged from 5 to 40%, with highest CVs typically obtained with PS assays.

Activated Protein C Resistance↗

Reducing errors in identification of von Willebrand disease: the experience of the royal college of pathologists of australasia quality assurance program.

Regular multilaboratory surveys of laboratories derived primarily from Australia, New Zealand, and Southeast Asia have been conducted during the last 8 years to evaluate testing proficiency in the diagnosis of von Willebrand disease (vWD). We summarize and update the findings of these surveys with a particular emphasis on diagnostic errors and error rates associated with particular tests or test panel limitations. A total of 43 plasma samples have been dispatched to survey participants. These have included 13 normal samples, five type 1 vWD samples, eight type 2 vWD samples (three 2A, three 2B, one 2M, and one 2N), and four type 3 vWD samples. In addition to numerical test results, participant laboratories (currently, n = 49) were asked to provide diagnostic interpretations regarding results, and whether or not vWD was suggested, and if so, a probable subtype. Although laboratories usually provided correct interpretative responses, diagnostic errors occurred in a substantial number of cases. On average, type 1 vWD plasma was misidentified as type 2 vWD in 13.3% of cases, and laboratories performing von Willebrand factor (vWF):ristocetin cofactor activity (RCo) without vWF:collagen-binding activity (CB) were seven times more likely to make such an error compared with those performing vWF:CB. Similarly, type 2 vWD plasma was misidentified as type 1 or type 3 vWD in an average of 20.1% of cases, and laboratories performing vWF:RCo without vWF:CB were three times more likely to make such an error compared with those performing vWF:CB. Finally, normal plasma was misidentified as vWD in an average of 6.7% of cases, and laboratories performing vWF:RCo without vWF:CB were four times more likely to make such an error compared with those performing vWF:CB. We conclude that although laboratories are generally proficient in tests for vWD, diagnostic errors do occur and error rates are substantially reduced when test panels are more comprehensive and include the vWF:CB.

Australasia↗

Broadsheet number 47: Chronic hepatitis: an update with guidelines for histopathological assessment of liver biopsies. Board of Education of The Royal College of Pathologists of Australasia.

The liver biopsy remains the 'gold standard' for the diagnosis of chronic hepatitis, particularly since it is the only investigation that permits assessment of the severity (grade of histological activity and stage of fibrosis) of liver injury. As outlined below, the liver biopsy is invaluable for both diagnosis and the monitoring of therapy. To optimise the value of the liver biopsy, a standardised approach for assessment and reporting of chronic hepatitis is recommended.

Biopsy↗