Abstract:
CONTEXT:Correction factors have been proposed for estimating true potassium concentrations in blood samples with evidence of in vitro hemolysis. OBJECTIVE:We used 2 different models of true (ie, nonsimulated) in vitro hemolysis to evaluate the clinical utility of correction factors for estimating potassium concentrations in samples with evidence of in vitro hemolysis. DESIGN:Potassium correction factors were derived using 2 different models. In model 1, potassium and plasma hemoglobin were measured with the Hitachi 747 analyzer in 132 paired blood samples, with each pair consisting of 1 sample with evidence of hemolysis and 1 without, collected during the same phlebotomy procedure. The change in measured potassium concentration was plotted versus the change in plasma hemoglobin concentration for each pair of samples. In model 2, the potassium levels of 142 784 blood samples and the corresponding hemolytic index values were measured with the Beckman LX20 analyzer. Potassium concentrations at the 10th, 25th, 50th, 75th, and 90th percentiles were calculated for each hemolysis index category. RESULTS:From our 2 models, we derived correction factors expressing an increase in potassium concentration of 0.51 and 0.40 mEq/L for every increase in plasma hemoglobin concentration of 0.1 g/dL. These correction factors are much higher than those reported in studies that simulated in vitro hemolysis by freeze-thaw lysis or osmotic disruption of whole blood. CONCLUSIONS:Use of correction factors for estimating the true potassium concentration in samples with evidence of in vitro hemolysis is not recommended. Derivation of correction factors by using samples with nonsimulated in vitro hemolysis suggests that the actual increase in potassium in hemolyzed samples is much higher than that reported in previous studies that produced hemolysis with artificial means.
journal_name
Arch Pathol Lab Medjournal_title
Archives of pathology & laboratory medicineauthors
Mansour MM,Azzazy HM,Kazmierczak SCdoi
10.1043/1543-2165-133.6.960subject
Has Abstractpub_date
2009-06-01 00:00:00pages
960-6issue
6eissn
0003-9985issn
1543-2165pii
2008-0322-OAR1journal_volume
133pub_type
杂志文章abstract::Since it is believed that "a picture is worth a thousand words," incorporation of computer-generated line art was used as a adjunct to gross description in surgical pathology reporting in selected cases. The lack of an integrated software program was overcome by using commercially available graphic and word processing...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract::We describe a 14-year-old boy with a solitary cavernous hemangioma in the proximal small intestine that caused recalcitrant iron deficiency anemia beginning at 3 years of age. After a number of attempts to ascertain the cause of the anemia were unsuccessful, the vascular tumor was ultimately diagnosed in the jejunum, ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:
更新日期:1993-09-01 00:00:00
abstract::A benign chondrolipomatous breast tumor occurred in a 66-year-old woman. The preoperative diagnosis, based on mammography and xeroradiography, was fibroadenoma. Grossly, the demarcated lesion resembled a fibroadenoma with islands of cartilage projecting from its cut surface. Histologically, it was composed of benign m...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1977-03-01 00:00:00
abstract::Epithelioid sarcomas are rare, mesenchymal tumors of unknown histogenesis and display multidirectional differentiation, which is predominantly epithelial. They have no normal cellular counterpart and differ from both synovial sarcoma and carcinoma. They account for less than 1% of all soft tissue sarcomas and are usua...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165-133.5.814
更新日期:2009-05-01 00:00:00
abstract::Petrification of the auricle results in a rigid and immalleable ear. The etiology of such a finding is usually ectopic calcification. The condition has been associated with injurious processes, such as cold injury, and with various endocrinopathies, including Addison disease. In a significant number of cases, ossifica...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165(2004)128<1432:IBAOAC>2.0.CO;2
更新日期:2004-12-01 00:00:00
abstract::The costs of producing quality medical care and the proper allocation of resources to assure quality are major contemporary concerns. Minimalists attempt to improve quality and lower costs through the application of the theory, "less is more." Bureaucracies make the same attempt through the denial of payments for "unn...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
abstract::The risks of homologous blood transfusion have motivated some blood centers and private industry to consider providing long-term storage of frozen, autologous red blood cells as a service. The usefulness of this practice is unknown. We performed a retrospective analysis of frozen autologous red blood cell use in two h...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1990-05-01 00:00:00
abstract:CONTEXT:There are virtually no data in the literature regarding the incidence, patterns, and clinicopathologic characteristics of mucinous carcinomas (MCs) of the gallbladder (GB). OBJECTIVE:To determine the incidence of mucinous differentiation in invasive GB carcinomas and the clinicopathologic characteristics of th...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2011-0447-OA
更新日期:2012-11-01 00:00:00
abstract::A 35-year-old obese black American woman presented with nausea, vomiting, diarrhea, fever, cough, and chest pain of 2 weeks duration. She was pancytopenic and acidotic, with respiratory failure and hypotension. A diagnosis of septic shock was made, and the patient died 48 hours after admission. Blood cultures were pos...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1989-12-01 00:00:00
abstract::Multiple pulmonary leiomyomatous hamartomas (MPLHs) are extremely rare lesions. We present a case of MPLHs associated with a bronchogenic cyst in a symptomless, 46-year-old man. Previously, MLPHs have been reported to occur in men; therefore, not all cases of MPLHs represent metastases from a uterine smooth muscle tum...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2003)127
更新日期:2003-04-01 00:00:00
abstract:CONTEXT:- Different types of mature B-cell lymphomas, including plasma cell neoplasms, exhibit distinct immunohistochemical profiles, which enable them to be correctly diagnosed. However, except for rare examples of lymphoma-specific immunohistochemistry, such as cyclin D1 in mantle cell lymphoma and annexin A1 in hair...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2016-0521-RA
更新日期:2017-09-01 00:00:00
abstract::Basal cell carcinoma arising from the nipple of the breast is an uncommon malignancy, with only a handful of cases reported in the literature. The diagnosis is, however, important because basal cell carcinoma in this location can mimic breast cancer, may behave aggressively, and there is a relative lack of consensus i...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165(2004)128<792:PBCCOT>2.0.CO;2
更新日期:2004-07-01 00:00:00
abstract::Postmortem changes were studied by scanning electron microscopy (SEM) in renal tissue from five species of animals. Specimens were collected at intervals up to 24 hours after death. Six distinct morphological alterations were identified in the renal glomerulus, including capillary loop constriction, changes in microvi...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1981-09-01 00:00:00
abstract::In 4% formaldehyde-fixed, paraffin-embedded tissues, PAS negativity for mycobacteria in the literature has been axiomatic. However, recent observations of disseminated human mycobacteriosis have shown that intracellular (phagocytosed) organisms stained strongly positive with the routine PAS technique. This staining wa...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1984-05-01 00:00:00
abstract:OBJECTIVE:To determine the ability to recover human immunodeficiency virus type 1 (HIV-1) from the plasma and mononuclear cell (MNC) fractions of postmortem blood samples from patients with the acquired immunodeficiency syndrome. DESIGN:Blood was randomly cultured post mortem from 41 patients with the acquired immunod...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1992-11-01 00:00:00
abstract:OBJECTIVE:The confidential unit exclusion (CUE) is a mechanism for allogeneic blood donors to confidentially indicate whether they feel their blood is safe for transfusion to others. The purpose of this national survey was to determine the extent of use of the CUE procedure and its related policies. DESIGN:Supplementa...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1995-11-01 00:00:00
abstract:OBJECTIVES:To establish the rates with which reference laboratories resolve inquiries telephoned to them from primary laboratories and to identify reference laboratory practices associated with higher rates of inquiry resolution. DESIGN AND PARTICIPANTS:For 2 months, or until 50 contacts had occurred, 545 primary labo...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2001)125<0608:RLTSQ>2.0.CO;2
更新日期:2001-05-01 00:00:00
abstract::We report a case of spindle-cell adenosquamous carcinoma of the esophagus. This represents the third case in the worldwide literature in which an esophageal polypoid tumor contains adenosquamous carcinoma rather than the usual squamous cell carcinoma in addition to a prominent spindle-cell element. The spindle-cell co...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:
更新日期:1993-05-01 00:00:00
abstract::The College of American Pathologists' enzyme survey permits the evaluation of the quality of enzyme analyses in clinical laboratories. Animal source enzymes for lactate dehydrogenase, aspartate aminotransferase, alanine aminotransferase, and creatine kinase are satisfactory as supplements for enzyme survey serum, sinc...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1984-12-01 00:00:00
abstract:CONTEXT.—:Distinction of hydatidiform moles from nonmolar specimens and subclassification of hydatidiform moles as complete hydatidiform mole versus partial hydatidiform mole are important for clinical practice and investigational studies. Risk of persistent gestational trophoblastic disease and clinical management dif...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2018-0226-RA
更新日期:2018-12-01 00:00:00
abstract::Rapid tissue diagnosis during acute events associated with renal transplantation is often necessary to permit immediate decisions regarding initiation or modification of therapy. To achieve this, we performed frozen section analyses with cryoprotected alcoholic Bouin's-fixed tissue, which permits evaluation within 2.5...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00
abstract::von Hippel-Lindau (VHL) disease is an autosomal dominant disorder caused by heterozygous mutations in the VHL tumor suppressor gene that is characterized by the occurrence of multiple endocrine and nonendocrine lesions. This review focuses on the endocrine manifestations of VHL disease. Pancreatic neuroendocrine proli...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2013-0520-RS
更新日期:2015-02-01 00:00:00
abstract::This article offers a historical perspective on the discovery of 3 types of serrated colorectal polyps recognized in the past 60 years. The first to be discovered was the hyperplastic polyp, which is still the most commonly encountered serrated polyp. In the past 20 years, the carcinoma-associated sessile serrated ade...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2016-0278-RA
更新日期:2016-10-01 00:00:00
abstract::We report a case of hepatic inflammatory myofibroblastic tumor in a 26-year-old African American man who presented with right upper quadrant pain, weight loss, and fatigue during the previous year. Hepatomegaly was found on physical examination. Laboratory findings were significant for mild normocytic, normochromic an...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2006)130[1548:IMTOTL]2.0.CO;2
更新日期:2006-10-01 00:00:00
abstract:CONTEXT:Previous studies have shown that paraproteins caused spurious results on individual analytes including total bilirubin (TBIL), direct bilirubin (DBIL), or HDL-cholesterol (HDL-C). Studies demonstrating paraprotein interferences with multiple analytes measured by different analyzers have not been reported. OBJE...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2008)132[217:PAACCO]2.0.CO;2
更新日期:2008-02-01 00:00:00
abstract:CONTEXT:Success in the practice of pathology demands proficiency in management, but management training for pathology residents is generally inadequate, with little agreement on an appropriate curriculum or competency assessment. Most residency training programs do not have faculty members who are interested and have e...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2004)128<59:MTFPR>2.0.CO;2
更新日期:2004-01-01 00:00:00
abstract:CONTEXT.—:The approval of pembrolizumab for treatment of patients with microsatellite instability-high (MSI-H) or mismatch repair-deficient (dMMR) advanced cancers has led to increased requests for MSI and/or MMR immunoperoxidase (IPOX) testing. Diagnoses for patients with advanced-stage cancer are frequently made from...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2019-0398-OA
更新日期:2020-03-30 00:00:00
abstract::A family with a syndrome consisting of granulomatous arthritis, uveitis, and rash was first described in 1985. Another family with the same syndrome was described subsequently in 1990. The condition, in both families, is clinically different from sarcoidosis. To verify whether the granulomas in such patients also coul...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1993-10-01 00:00:00
abstract:CONTEXT:- Although many mesotheliomas are related to asbestos exposure, not all are, and there is increasing information on other causes of mesothelioma. OBJECTIVE:- To provide a review of non-asbestos causes for malignant mesothelioma. DATA SOURCES:- Review of relevant published literature via PubMed and other searc...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2017-0365-RA
更新日期:2018-06-01 00:00:00
abstract::Rosai-Dorfman disease is an idiopathic histiocytic disorder of lymph nodes and extranodal sites. Central nervous system manifestations of this disease are rare, and to our knowledge only 16 cases of intracranial involvement have been reported previously. Intracranial Rosai-Dorfman disease clinically and radiologically...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:
更新日期:1998-02-01 00:00:00