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Beyan C, Beyan E. Mean platelet volume values may not be related to the development of acute cerebral infarction in patients with non-variceal upper gastrointestinal bleeding. Clin Neurol Neurosurg 2024; 236:108067. [PMID: 38096744 DOI: 10.1016/j.clineuro.2023.108067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 02/04/2024]
Affiliation(s)
- Cengiz Beyan
- Retired Professor in Hematology, from Ufuk University Faculty of Medicine, Ankara, Turkey.
| | - Esin Beyan
- University of Health Sciences, Ankara Ataturk Sanatorium Training and Research Hospital, Department of Internal Medicine, Ankara, Turkey.
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2
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Beyan C, Beyan E. Mean platelet volume values may not be a marker of mortality in patients with severe trauma. Wien Klin Wochenschr 2023; 135:647-648. [PMID: 37828224 DOI: 10.1007/s00508-023-02295-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 09/26/2023] [Indexed: 10/14/2023]
Affiliation(s)
- Cengiz Beyan
- , Cigdem Mahallesi, 1551. Cadde, Iskent sitesi, No: 7/7, Cankaya, 06530, Ankara, Turkey.
- Faculty of Medicine, Ufuk University, Ankara, Turkey.
| | - Esin Beyan
- Ankara Ataturk Sanatorium Training and Research Hospital, Department of Internal Medicine, University of Health Sciences, Ankara, Turkey
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Frater JL. Preanalytical and analytical factors in the mean platelet volume: a potential cause of heterogeneity in studies of erectile dysfunction. Int J Impot Res 2023; 35:492-493. [PMID: 35523859 DOI: 10.1038/s41443-022-00577-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/09/2022]
Affiliation(s)
- John L Frater
- Department of Pathology and Immunology, Washington University, St Louis, MO, USA.
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Meng X, Sun H, Tu X, Li W. The Predictive Role of Hematological Parameters in Hypertension. Angiology 2023:33197231190423. [PMID: 37459606 DOI: 10.1177/00033197231190423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Hypertension (HT) is a common chronic disease that often causes target-organ damage and severe complications, contributing to cardiovascular morbidity and mortality worldwide. Accumulating evidence suggests that inflammation plays a prominent role in the initiation and progression of HT. Multiple inflammatory biomarkers have been proposed to predict HT. Several new hematological parameters can reflect the inflammatory response and platelet activation. The major advantage of hematological parameters over conventional inflammatory markers is that they are relatively inexpensive and easily obtained from routine blood tests. Numerous studies have investigated several hematological parameters for their utility as predictive biomarkers for the diagnosis and prognosis of HT. Among them, the neutrophil to lymphocyte ratio (NLR), monocyte to high density lipoprotein cholesterol ratio (MHR), red cell distribution width (RDW), platelet to lymphocyte ratio (PLR), mean platelet volume (MPV), platelet distribution width (PDW), and systemic immune-inflammation index (SII) have recently received attention. We searched PubMed and Embase databases (up to September 18, 2022) to assess the relationships between hematological parameters and HT. This review discusses the diagnostic and prognostic value of these hematological parameters in HT, providing an important basis for early screening, risk stratification, and optimal management of hypertensive patients.
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Affiliation(s)
- Xiangzhu Meng
- Department of Cardiology, Jiangxi Province Hospital of Integrated Chinese and Western Medicine, Nanchang, Jiangxi, China
| | - Hong Sun
- Department of Intensive Care Unit, Ganzhou People's Hospital, Ganzhou, Jiangxi, China
| | - Xiaowen Tu
- Department of Cardiology, Jiangxi Province Hospital of Integrated Chinese and Western Medicine, Nanchang, Jiangxi, China
| | - Wei Li
- Department of Intensive Care Unit, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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Frater JL, Shirai CL. Role of mean platelet volume in differential diagnosis of adult-onset Still's disease and sepsis. REVISTA DA ASSOCIAÇÃO MÉDICA BRASILEIRA 2022; 68:736-738. [PMID: 35584437 PMCID: PMC9575883 DOI: 10.1590/1806-9282.20220190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 02/27/2022] [Indexed: 12/02/2022]
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Mean platelet volume may not have a predictive value for renal involvement in Henoch-Schönlein purpura secondary to Mycoplasma pneumoniae infection. Clin Rheumatol 2022; 41:959-960. [DOI: 10.1007/s10067-022-06076-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 01/16/2022] [Accepted: 01/18/2022] [Indexed: 11/03/2022]
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7
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Frater JL. Comments on: "Is mean platelet volume related to disease activity in systemic lupus erythematosus?" Int J Clin Pract. 2021 Jul 29:e14676. Int J Clin Pract 2021; 75:e14954. [PMID: 34965653 DOI: 10.1111/ijcp.14954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- John L Frater
- Department of Pathology and Immunology, Washington University, St Louis, Missouri, USA
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Unalli OS, Ozarda Y. Stability of hematological analytes during 48 hours storage at three temperatures using Cell-Dyn hematology analyzer. J Med Biochem 2021; 40:252-260. [PMID: 34177369 DOI: 10.5937/jomb0-27945] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 10/08/2020] [Indexed: 11/02/2022] Open
Abstract
Background The complete blood count (CBC) with differential leukocyte count (DLC) is one of the most common tests requested by physicians. The results of this test are affected by storage temperature and time of incubation. This study was designed to evaluate the stability of hematologic parameters in blood specimens stored for 48 h at three temperatures. Methods K2-EDTA - blood was collected from 22 healthy adults. The CBC was performed using a hematology analyser immediately; 0 time point and at 4, 8, 12, 16, 20, 24, and 48 h after storage at 4 °C, 10 °C or 23 °C. Changes in values of CBC parameters from the 0 time point were determined and reported as % of the initial value. Results Red blood cells, platelet, hemoglobin, and mean corpuscular hemoglobin were found stable during 48 h storage at 4 °C, 10 °C or 23 °C. Hematocrite and mean corpuscular volume increased, while white blood cells decreased at 48 h when stored at 23 °C. Lymphocytes, neutrophils, eosinophils, and basophils showed significant differences after 12 h of storage at 23 °C. Conclusions Red blood cells, platelet, hemoglobin, and mean corpuscular hemoglobin are the only suitable parameters without refrigeration during 24 h storage. When CBC and DLC are performed, 4 °C can be recommended as the most suitable storage temperature for 12 h storage.
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Affiliation(s)
| | - Yesim Ozarda
- Uludag University, Faculty of Medicine, Department of Medical Biochemistry, Bursa, Turkey
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Park S, Huh J, Jeong TD. False-positive flag of WBC and change of mean platelet volume (MPV) caused by K3-EDTA on the DxH 900 hematology analyzer. Scandinavian Journal of Clinical and Laboratory Investigation 2020; 80:644-648. [PMID: 32975447 DOI: 10.1080/00365513.2020.1824298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
During the evaluation of the DxH 900 hematology analyzer (Beckman Coulter, Miami, FL), we noted that some patient samples produced a false positive white blood cell (WBC) flag, neutrophil blasts (NE-blast), despite the absence of abnormal cells. We investigated whether storage time or anticoagulants such as K2- or K3-ethylenediaminetetraacetic acid (EDTA) would affect complete blood count (CBC) tests on the DxH 900. Sixty-four whole blood samples were collected in K3-EDTA tubes, and 44 were simultaneously drawn in K2-EDTA tubes. Samples were tested at the following two intervals: within 30 min of collection (0 min) and after an additional 30 min of roller-mixing at room temperature (30 min). WBC differential dataplots in 0-min K3-EDTA tubes showed a mixed cell population between lymphocytes and neutrophils in 22 patients presenting the NE-blast flag. All 22 samples revealed normal WBC differential dataplots after 30 min of roller-mixing. The significantly lower mean neutrophil volume in specimens of 0-min K3-EDTA tubes than those of 0-min K2-EDTA, 30-min K2-EDTA and 30-min K3-EDTA tubes appear to be the cause of the false flag. Unlike blood cell counts, mean platelet volume (MPV) was significantly higher at 30 min using both EDTA tubes than that at 0 min. In conclusion, K3-EDTA can produce a false positive flag, NE-blast, on the DxH 900. MPV increases over time irrespective of EDTA salt type.
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Affiliation(s)
- Sholhui Park
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Jungwon Huh
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Tae-Dong Jeong
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
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Kim H, Hur M, Kim SW, Moon HW, Yun YM. Reference intervals for clinically reportable platelet parameters on the Mindray BC-6800Plus hematology analyzer. Clin Chem Lab Med 2020; 58:e213-e215. [DOI: 10.1515/cclm-2020-0020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 01/22/2020] [Indexed: 01/29/2023]
Affiliation(s)
- Hanah Kim
- Department of Laboratory Medicine , Konkuk University School of Medicine, Konkuk University Medical Center , Seoul , Korea
| | - Mina Hur
- Department of Laboratory Medicine , Konkuk University School of Medicine, Konkuk University Medical Center , Seoul , Korea
| | - Seung-Wan Kim
- Department of Laboratory Medicine , Konkuk University School of Medicine, Konkuk University Medical Center , Seoul , Korea
| | - Hee-Won Moon
- Department of Laboratory Medicine , Konkuk University School of Medicine, Konkuk University Medical Center , Seoul , Korea
| | - Yeo-Min Yun
- Department of Laboratory Medicine , Konkuk University School of Medicine, Konkuk University Medical Center , Seoul , Korea
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Effects of Time-Interval since Blood Draw and of Anticoagulation on Platelet Testing (Count, Indices and Impedance Aggregometry): A Systematic Study with Blood from Healthy Volunteers. J Clin Med 2020; 9:jcm9082515. [PMID: 32759828 PMCID: PMC7465339 DOI: 10.3390/jcm9082515] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/28/2020] [Accepted: 07/31/2020] [Indexed: 11/17/2022] Open
Abstract
Platelet count, indices (mean volume, young-immature platelet fraction) and aggregation are widely used laboratory parameters to investigate primary hemostasis. We performed a systematic, thorough evaluation of the influence of the time-interval since blood draw from 20 healthy individuals and of the anticoagulation of collected blood on such parameters. Blood was anticoagulated with citrate, K2-ethylenediaminetetraacetic acid (EDTA) and hirudin and analyzed 5, 30, 60, 120 and 180 min after blood draw. Multiple electrode aggregometry (MEA) was performed with either hirudin (half-diluted with NaCl) or citrate samples (half-diluted with NaCl or CaCl2 3 mM). Platelet count and indices (Sysmex XN-20) were rather stable over time with EDTA blood. MEA results were lower with citrate blood than with hirudin blood; supplementation with calcium was partially compensatory. MEA results were also lower when performed less than 30 or more than 120 min after blood draw. Platelet clumping, quantitatively estimated with microscope examination of blood smears, was more important in hirudin blood than citrate or EDTA blood and could explain some of the differences observed between preanalytical variables. The results stress once more the importance of preanalytical variables in hemostasis laboratory testing. Decision thresholds based on those tests are only applicable within specific preanalytical conditions.
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Lippi G, Sanchis-Gomar F, Favaloro EJ. Mean platelet volume in arterial and venous thrombotic disorders. J LAB MED 2020. [DOI: 10.1515/labmed-2019-0201] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Abstract
The mean platelet volume (MPV) is an easy, rapid and inexpensive laboratory parameter which basically mirrors platelet size. Due to the essential role of platelets in hemostasis, many studies have assessed the MPV value in patients with arterial and venous thrombotic disorders. These have then been summarized in some interesting meta-analyses and recent studies that will be discussed in this narrative review. Taken together, the currently available evidence suggests that the MPV may be substantially increased in concomitance with acute episodes of coronary artery disease, venous thromboembolism, portal vein thrombosis, stroke, erectile dysfunction and preeclampsia. In many of these conditions, an increased MPV value may also be associated with unfavorable outcomes. Despite these convincing findings, some important technical issues should be considered for improving the clinical usefulness of this measure. These essentially include anticoagulant, timing of sample collection, the sample storage conditions, the influence of the analytical techniques, the approaches used for its calculation, the accurate definition of reference ranges and diagnostic cut-offs, as well as the current lack of standardization, which makes data obtained with different techniques/analyzers poorly comparable. Provided that the impact of these variables can be abated or minimized, the MPV can gain a valuable role in the laboratory workout of many arterial and venous thrombotic disorders.
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Affiliation(s)
- Giuseppe Lippi
- Section of Clinical Biochemistry , University Hospital of Verona , Piazzale LA Scuro , 37134 Verona , Italy
| | - Fabian Sanchis-Gomar
- Department of Physiology, Faculty of Medicine , University of Valencia and INCLIVA Biomedical Research Institute , Valencia , Spain
| | - Emmanuel J. Favaloro
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), Sydney Centers for Thrombosis and Haemostasis, NSW Health Pathology, Westmead Hospital , Westmead, NSW , Australia
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