Abstract:
AIM:To evaluate the accuracy of the approximate linear formula of International Normalised Ratio (INR) imprecision by formal mathematical analysis. METHODS:Using probability theory, an exact formula for the coefficient of variation (CV) of the INR was derived. The CV from the approximate formula was compared with the CV from the exact formula for INR determinations between 1.0 and 10.0 with International Sensitivity Indices (ISIs) between 1.0 and 3.0 and prothrombin time ratio CVs between 1.0 and 10.0%. RESULTS:When the ISI equals 1.0, the approximate formula and the exact formula are equal. When the ISI is more than 1.0, the approximate formula overestimates the exact CV, but by less than one hundredth of the exact CV in the parameter ranges studied. The approximate formula is most accurate when laboratories achieve excellent prothrombin time measurement precision and use sensitive thromboplastins. CONCLUSIONS:The approximate formula provides a simple means for estimating the imprecision of the INR and is sufficiently accurate to warrant its use in clinical laboratories.
journal_name
J Clin Patholjournal_title
Journal of clinical pathologyauthors
Bennett ST,Critchfield GCdoi
10.1136/jcp.47.7.635subject
Has Abstractpub_date
1994-07-01 00:00:00pages
635-8issue
7eissn
0021-9746issn
1472-4146journal_volume
47pub_type
杂志文章abstract::Cervical biopsies from 97 women with malignant cells in cervical scrape smears have been studied. Forty-eight patients had invasive squamous carcinoma, and 49 had intraepithelial lesions. Of these, six had dedifferentiated carcinoma in situ, nine had the differentiated lesions generally known as ;severe dysplasia', an...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.20.1.7
更新日期:1967-01-01 00:00:00
abstract:AIMS:To report the clinicopathological characteristics of patients with ocular adnexal marginal zone B cell lymphoma (MZBL) with IgG4-positive plasma cells. METHODS:114 biopsy samples of ocular adnexal MZBLs were analysed. MZBLs with IgG4-positive plasma cells were included when the IgG4:IgG ratio was >40% (IgG4-relat...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.2010.082156
更新日期:2010-12-01 00:00:00
abstract::Two cases of peritoneal granulomatous reactions to food starch are described. They followed bowel perforation and clinically mimicked tuberculous and glove-powder starch peritonitis. Their histological differences from corn-starch peritonitis warrant attention in the absence of previous documentation of starch as a co...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.36.4.435
更新日期:1983-04-01 00:00:00
abstract::A blood group change from A2 to Ax is described in a boy who had Fallot's tetralogy, oesophageal atresia, and a tracheo-oesophageal fistula. The change of blood group created a transfusion problem. The unusual serology is discussed. ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.28.12.962
更新日期:1975-12-01 00:00:00
abstract::The Kallestad Corporation recently suggested that their new buffer system for the nephelometric detection of rheumatoid factor conferred advantages over existing systems. Two rate nephelometric procedures, the Kallestad QM-300 and the Beckman ICS-II (RF), were therefore compared. Sera (n = 157) were selected on the ba...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.43.3.243
更新日期:1990-03-01 00:00:00
abstract::Carcinoma-associated fibroblast (CAF) as prominent cell type of the tumour microenvironment has complex interaction with both the cancer cells and other non-neoplastic surrounding cells. The CAF-derived regulators and extracellular matrix proteins can support cancer progression by providing a protective microenvironme...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jclinpath-2014-202561
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:Epstein's syndrome is defined as a subtype of Alport's syndrome, and is distinguished from the other subtypes by accompanying macrothrombocytopenia. Mutations in collagen IV genes are known to be involved in the pathogenesis of typical Alport's syndrome. However, the presence of an underlying genetic defect ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.50.11.919
更新日期:1997-11-01 00:00:00
abstract::The association between asymptomatic primary sclerosing cholangitis and exocrine pancreatic disease was underlined by the findings in a patient with cystic fibrosis and in another with chronic pancreatitis. In each case hepatocytes showed extensive microvesicular steatosis and studies of drug metabolism suggested hepa...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.42.5.466
更新日期:1989-05-01 00:00:00
abstract::Partial myoepithelial differentiation is common in simple epithelial hyperplasia (epitheliosis) of the breast but functional myoepithelial differentiation with basement membrane production is exceedingly rare. A peculiar change of hyaline globules within benign epithelial hyperplasia has been recognised before as "col...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.43.11.905
更新日期:1990-11-01 00:00:00
abstract:AIMS:The WHO classification describes that combined hepatocellular-cholangiocarcinoma, subtypes with stem-cell features, intermediate-cell subtype (CHC-INT) is composed of tumour cells with features intermediate between hepatocytes and cholangiocytes. However, we previously reported that CHC-INT showed a high positive ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2015-203491
更新日期:2016-10-01 00:00:00
abstract::A 51 year old woman presented with rectal bleeding from a mass lying just above the dentate line. Multiple biopsies were taken before the diagnosis of a benign lymphoid polyp was made. This is a rare condition that more commonly presents in children and poses a diagnostic challenge. ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.50.12.1034
更新日期:1997-12-01 00:00:00
abstract::Four strains of Corynebacterium diphtheriae were sent to UK participants in the UK National External Microbiological Quality Assessment Scheme, who were asked to examine the strains for toxin production by in vitro methods. Laboratories achieved 162/176 (92%) and 160/175 (91%) correct results with two rapid toxin prod...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.37.7.796
更新日期:1984-07-01 00:00:00
abstract:AIMS:This is a qualitative study of the perceived learning needs of trainees for graded responsibility in histopathological training in the UK. METHODS:A focus group with trainees and interviews with consultants was carried out. Participants were asked 'What do you perceive are the learning needs of histopathology tra...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2015-203090
更新日期:2016-01-01 00:00:00
abstract::The occurrence of a severe generalized haemorrhagic state in an obstetric case due to a heparin-like anticoagulant is described. This appeared in the post-partum period apparently following a compatible blood transfusion. The pattern of results found in conventional laboratory tests for elucidating acute blood coagula...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.16.2.108
更新日期:1963-03-01 00:00:00
abstract:AIMS:Clot waveform analysis (CWA) has been reported to extend the interpretation of clotting time measurement. The parameters obtained from successive derivatives of the clotting reaction curves reflect the rates of activation of individual coagulation factors, theoretically dissecting the cascade pathway. This study a...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2018-205517
更新日期:2019-03-01 00:00:00
abstract::A system is described for the maintenance of cumulative haematology records for selected patients using a laboratory minicomputer with limited storage capacity. Records are indexed by the patient's name and location since, as in the majority of hospital laboratories, there is no unique numbering scheme which covers al...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.30.4.356
更新日期:1977-04-01 00:00:00
abstract::Factor VII levels have been measured in 100 patients with liver disease following parenteral vitamin K1 therapy. There was good agreement between specific factor VII measurements and the one-stage prothrombin time apart from six patients with compensated cirrhosis in whom the prothrombin time was prolonged despite the...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.29.11.971
更新日期:1976-11-01 00:00:00
abstract::Dilated cardiomyopathy (DCM) represents a common genetic cause of mechanical and/or electrical dysfunction leading to heart failure (HF) onset for which truncating variants in titin (TTN) gene result in the most frequent mutations. Moreover, myocyte and endothelial cell apoptosis is a key endophenotype underlying card...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jclinpath-2019-206404
更新日期:2020-09-01 00:00:00
abstract::A patient is described in whom a campylobacter enteritis closely resembled ulcerative colitis on clinical, sigmoidoscopic, and histological grounds. Selective stool culture techniques may be necessary to differentiate campylobacter colitis from ulcerative colitis proper. ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.32.10.986
更新日期:1979-10-01 00:00:00
abstract:AIMS:To determine important factors influencing recurrence after local excision of duct carcinoma in situ (DCIS) of the breast. MATERIALS AND METHODS:The extent (size) in millimetres, classification (by cytonuclear grade (NHSBSP system), by extent of necrosis, and by the Van Nuys system), and excision margins of 115 c...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.55.8.581
更新日期:2002-08-01 00:00:00
abstract::The mucin and gland content of 26 rectal biopsy specimens--five normal specimens, 10 from patients with ulcerative colitis, and 11 from patients with Crohn's disease--were measured using a Quantimet image analyser. There was significantly less mucin in the groups with ulcerative colitis compared with either those with...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.43.2.143
更新日期:1990-02-01 00:00:00
abstract:BACKGROUND:The Royal College of Pathologists introduced the National Minimum Dataset (NMDS) for the histopathological reporting of cutaneous melanoma in February 2002. AIM:To determine if histological reporting of invasive primary cutaneous melanoma in the West Midlands region of the UK was compliant with the NMDS. M...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,多中心研究
doi:10.1136/jcp.2006.042937
更新日期:2007-10-01 00:00:00
abstract::Detection of Haemophilus influenzae type b (HIb) antigenuria by latex agglutination has been shown to be sensitive, specific, and rapid. In children, antigenuria persisted for a mean duration of 10 days and a maximum of 18 days. Antigenuria was demonstrated in 25 of 30 patients with HIb infection but not in 62 with ot...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.32.6.538
更新日期:1979-06-01 00:00:00
abstract::A recently developed procedure, that has been shown to be suitable for detailed immunohistological analysis, has been used to prepare cryostat sections of bone marrow to investigate whether enzyme-histochemical techniques are also feasible on such material. A selected group of enzymes, some of which are inhibited or d...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.35.11.1220
更新日期:1982-11-01 00:00:00
abstract:OBJECTIVE:To describe practical experiences in the sharing of very large digital data bases of histopathological imagery via the Internet, by investigators working in Europe, North America, and South America. MATERIALS:Experiences derived from medium power (sampling density 2.4 pixels/microm) and high power (6 pixels/...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.55.6.452
更新日期:2002-06-01 00:00:00
abstract::The coronavirus disease 2019 (COVID-19) is a zoonotic viral infection originating from Wuhan, China in December 2019. The World Health Organization has classified this pandemic as a global health emergency due to its virulent nature of transmission, which may lead to acute respiratory distress syndrome. Singapore's he...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2020-206563
更新日期:2020-03-20 00:00:00
abstract::The clinical and pathological features of a case of malakoplakia of the adrenal gland occurring in a woman with Escherichia coli infection are described. This lesion mimicked a neoplasm, the true diagnosis only being revealed by histological examination. The light and electron microscopic features are described and it...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.34.6.606
更新日期:1981-06-01 00:00:00
abstract:BACKGROUND:Cytokeratin immunohistochemistry (IHC) reveals a higher rate of occult lymph node metastases among lobular carcinomas than among ductal breast cancers. IHC is widely used but is seldom recommended for the evaluation of sentinel lymph nodes in breast cancer patients. OBJECTIVE:To assess the value of cytokera...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,多中心研究
doi:10.1136/jcp.2005.029991
更新日期:2006-05-01 00:00:00
abstract::An enzyme linked immunosorbent assay (ELISA) based on the antibody class capture method for the detection of specific IgM against Toxoplasma gondii, using the microtitre plate format, was developed. Antigen binding was detected using a monoclonal antibody, CIE3, conjugated to horseradish peroxidase. Prior mixing of th...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.40.3.276
更新日期:1987-03-01 00:00:00
abstract::This paper urges the benefits of applying more widely a method for pathology laboratory costing originally devised for a clinical chemistry department, and illustrates these with examples drawn from costing studies in three clinical laboratories. Heads of pathology departments, laboratory managers, administrators and ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.36.9.1028
更新日期:1983-09-01 00:00:00