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Borgatta M, Wild P, Delobel J, Renella R, Hopf NB. Hematological variations in healthy participants exposed 2 h to propylene glycol ethers under controlled conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 879:162865. [PMID: 36933710 DOI: 10.1016/j.scitotenv.2023.162865] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/21/2023] [Accepted: 03/10/2023] [Indexed: 05/17/2023]
Abstract
Glycol ethers are solvents used in a plethora of occupational and household products exposing the users to potential toxic effects. Several glycol ethers derived from ethylene glycol induce hematological toxicity, such as anemia in workers. The exposure effects on blood cells of glycol ethers derived from propylene glycol are unknown in humans. The aim of our study was to evaluate blood parameters indicative of red blood cell (RBC) hemolysis and oxidative stress in participants exposed to propylene glycol (propylene glycol monobutyl ether (PGBE) and propylene glycol monomethyl ether (PGME)), two extensively used propylene glycol derivatives worldwide. Seventeen participants were exposed 2 h in a control inhalation exposure chamber to low PGME (35 ppm) and PGBE (15 ppm) air concentrations. Blood was regularly collected before, during (15, 30, 60, and 120 min), and 60 min after exposure for RBC and oxidative stress analyses. Urine was also collected for clinical effects related to hemolysis. Under the study conditions, our results showed that the blood parameters such as RBCs, hemoglobin concentration, and white blood cells tended to increase in response to PGME and PGBE exposures. These results raise questions about the possible effects in people regularly exposed to higher concentrations, such as workers.
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Affiliation(s)
- Myriam Borgatta
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Epalinges-Lausanne, Switzerland.
| | - Pascal Wild
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Epalinges-Lausanne, Switzerland; PW Statistical Consulting, 54520 Laxou, France.
| | - Julien Delobel
- Pediatric Hematology-Oncology Research Laboratory, Division of Pediatrics, Department "Woman-Mother-Child", Lausanne University Hospital and University of Lausanne, Switzerland.
| | - Raffaele Renella
- Pediatric Hematology-Oncology Research Laboratory, Division of Pediatrics, Department "Woman-Mother-Child", Lausanne University Hospital and University of Lausanne, Switzerland.
| | - Nancy B Hopf
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Epalinges-Lausanne, Switzerland.
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Lee H, Lee H, Kim C, Shin H, Lee I, Kim Y. Hemolysis Control in the Emergency Department by Interventional Blood Sampling. J Pers Med 2023; 13:jpm13040651. [PMID: 37109037 PMCID: PMC10143623 DOI: 10.3390/jpm13040651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/05/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
The hemolysis rate in the emergency department (ED) is higher compared to that in other departments. We propose a new blood sampling technique without repeated venipuncture to reduce hemolysis and compare the hemolysis rate between blood collected by this method and that collected with an intravenous (IV) catheter. This prospective study included a nonconsecutive sample of patients visiting the ED (aged ≥ 18 years) of a tertiary urban university hospital. The intravenous catheterization was performed by three pre-trained nurses. The new blood collection technique involved sample collection without removing the catheter needle, performed immediately before the conventional method (through an IV catheter), without additional venipuncture. Two blood samples were collected from each patient using both the new and conventional methods, and the hemolysis index was evaluated. We compared the hemolysis rate between the two methods. From the 260 patients enrolled in this study, 147 (56.5%) were male, and the mean age was 58.3 years. The hemolysis rate of the new blood collection method was 1.9% (5/260), which was significantly lower than that of the conventional method (7.3%; 19/260) (p = 0.001). The new blood collection method can reduce the hemolysis rate as compared to the conventional blood collection method.
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Affiliation(s)
- Hyeseung Lee
- Department of Emergency Medicine, Guri Hospital, Hanyang University College of Medicine, Guri 11923, Republic of Korea
| | - Heekyung Lee
- Department of Emergency Medicine, Guri Hospital, Hanyang University College of Medicine, Guri 11923, Republic of Korea
| | - Changsun Kim
- Department of Emergency Medicine, Guri Hospital, Hanyang University College of Medicine, Guri 11923, Republic of Korea
| | - Hyungoo Shin
- Department of Emergency Medicine, Guri Hospital, Hanyang University College of Medicine, Guri 11923, Republic of Korea
| | - Inhye Lee
- Department of Emergency Medicine, Yongin Severance Hospital, Yongin 16995, Republic of Korea
| | - Yihyun Kim
- Department of Philosophy, University of Nevada, Las Vegas, NV 89154, USA
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Jones AD, Sapatnekar S, Bakdash S. Drugs and Conditions That May Mimic Hemolysis. Am J Clin Pathol 2023; 159:34-42. [PMID: 36367367 DOI: 10.1093/ajcp/aqac130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 09/12/2022] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Visual inspection of posttransfusion plasma for hemolysis is a key laboratory method in the investigation of possible acute hemolytic transfusion reactions (AHTRs). Many substances and physiologic conditions can mimic hemolysis in vitro. Isolated reports describe specific cases of interference, but a comprehensive listing is lacking. METHODS Using an illustrative case, we summarize available literature on substances and conditions that may mimic hemolysis in vitro. We further describe other substances and conditions that may discolor plasma but are unlikely to be mistaken for hemolysis on visual inspection. RESULTS At least 11 substances and conditions have been reported to discolor plasma, in colors ranging from orange to red to brown, including relatively common therapies (eg, eltrombopag, hydroxocobalamin, iron dextran). Other substances are unlikely to be encountered in everyday practice but may mimic hemolysis in particular patient populations. Additional substances may cause plasma discoloration, ranging from blue to green to white, and are associated with a wide variety of therapies and conditions. CONCLUSIONS An awareness of the possible preanalytic confounding factors that may mimic hemolysis can aid in the workup of a suspected AHTR. Review of the medical record, use of ancillary testing, and consideration for nonimmune causes of hemolysis can aid in ruling out AHTR.
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Affiliation(s)
- Andrew D Jones
- From the Section of Transfusion Medicine, The Robert J. Tomsich Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Suneeti Sapatnekar
- From the Section of Transfusion Medicine, The Robert J. Tomsich Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Suzanne Bakdash
- From the Section of Transfusion Medicine, The Robert J. Tomsich Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
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Abstract
Edible flowers have been widely consumed for ages until now. The attractive colors and shapes, exotic aroma, and delightful taste make edible flowers very easy to attain. Moreover, they also provide health benefits for consumers due to the unique composition and concentration of antioxidant compounds in the matrices. Knowing the bioactive compounds and their functional properties from edible flowers is necessary to diversify the usage and reach broader consumers. Therefore, this reported review could be useful for functional product development, engaging the discussed edible flowers. We present a comprehensive review of edible flower composition and the functional properties of their antioxidant compounds, mainly phenolics.
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Quig K, Wheatley EG, O'Hara M. Perspectives On Blood-Based Point-Of-Care Diagnostics. Open Access Emerg Med 2019; 11:291-296. [PMID: 31814781 PMCID: PMC6861530 DOI: 10.2147/oaem.s223667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 11/02/2019] [Indexed: 12/14/2022] Open
Abstract
Background Point of Care (POC) diagnostics are an essential component of modern medicine and are employed in a variety of clinical disciplines to improve patient outcomes and provider efficiency. Despite these benefits, there are aspects of POC testing which may still hold room for improvement. In the present study, a group of healthcare professionals familiar with different facets of blood-based POC testing provided their perspectives on the benefits and challenges of POC testing within their respective fields. Materials and methods The study was conducted from April to June 2019, in Colorado, United States of America. Five healthcare professionals, each working in a distinct field (anesthesiology, nursing, emergency medicine, trauma surgery, and POC management) were interviewed. Results from each of the interviews were transcribed as qualitative perspectives on POC diagnostics. Discussion The general consensus among participants in this study is that POC testing is tremendously beneficial, providing rapid test results, increased access to diagnostics, and improvements in hospital efficiency. However, significant challenges remain in blood-based POC diagnostics, particularly in maintaining sample quality, due to the fact that devices used for sample acquisition and handling are not designed for POC. This raises the possibility for interferents like hemolysis to occur, which may alter diagnostic results. Errors in POC diagnostics, whether due to sample, operator, or instrument error, may cause providers to lose confidence in the test. This lack of confidence can lead to duplicate testing and delayed patient diagnoses. Conclusion The perspectives presented in this study suggest there is a significant need for improvement in the pre-analytical phase of POC testing, and that current practice employs specimen collection technology not designed for POC. Therefore, one hypothesis is that the introduction of a collection device designed specifically for POC could reduce pre-analytical errors, standardize sample quality, improve efficiency, and further benefit patient care.
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Simundic AM, Baird G, Cadamuro J, Costelloe SJ, Lippi G. Managing hemolyzed samples in clinical laboratories. Crit Rev Clin Lab Sci 2019; 57:1-21. [PMID: 31603708 DOI: 10.1080/10408363.2019.1664391] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Hemolysis is conventionally defined as membrane disruption of red blood cells and other blood cells that is accompanied by subsequent release of intracellular components into the serum or plasma. It accounts for over 60% of blood sample rejections in the laboratory and is the most common preanalytical error in laboratory medicine. Hemolysis can occur both in vivo and in vitro. Intravascular hemolysis (in vivo) is always associated with an underlying pathological condition or disease, and thus careful steps should always be taken by the laboratory to exclude in vivo hemolysis with confidence. In vitro hemolysis, on the other hand, is highly preventable. It may occur at all stages of the preanalytical phase (i.e. sample collection, transport, handling and storage), and may lead to clinically relevant, yet spurious, changes in patient results by interfering with laboratory measurements. Hemolysis interference is exerted through several mechanisms: (1) spectrophotometric interference, (2) release of intracellular components, (3) sample dilution and (4) chemical interference. The degree of interference observed depends on the level of hemolysis and also on the assay methodology. Recent evidence shows that preanalytical practices related to detection and management of hemolyzed samples are highly heterogeneous and need to be standardized. The Working Group for Preanalytical Phase (WG-PRE) of the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM) has published many recommendations for facilitating standardization and improvement of this important preanalytical issue. Some key EFLM WG-PRE publications related to hemolysis involve: (i) a call for more transparency and some practical recommendations for improving the harmonization of the automatic assessment of serum indices and their clinical usefulness, specifically the hemolysis index (H-index), (ii) recommendations on how to manage local quality assurance of serum or plasma hemolysis/icterus/lipemia-indices (HIL-indices) and (iii) recommendations on how to detect and manage hemolyzed samples in clinical chemistry testing. In this review we provide a comprehensive overview of hemolysis, including its causes and effects on clinical laboratory assays. Furthermore, we list and discuss the most recent recommendations aimed at managing hemolyzed samples in everyday practice. Given the high prevalence of hemolyzed blood samples, the associated costs, the great heterogeneity in how hemolysis is handled across healthcare settings, countries and continents, and increasing patient cross-border mobility, standardization and quality improvement processes aimed at combatting this important preanalytical problem are clearly warranted.
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Affiliation(s)
- Ana-Maria Simundic
- Department of Medical Laboratory Diagnostics, University Hospital "Sveti Duh", University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Geoffrey Baird
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Janne Cadamuro
- Department of Laboratory Medicine, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Seán J Costelloe
- Department of Clinical Biochemistry, Cork University Hospital, Cork, Republic of Ireland
| | - Giuseppe Lippi
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
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Polymeric micelles of pluronic F127 reduce hemolytic potential of amphiphilic drugs. Colloids Surf B Biointerfaces 2019; 180:177-185. [DOI: 10.1016/j.colsurfb.2019.04.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 04/13/2019] [Accepted: 04/20/2019] [Indexed: 01/26/2023]
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Li L, Vecellio E, Gay S, Lake R, Mackay M, Burnett L, Chesher D, Braye S, Badrick T, Westbrook JI, Georgiou A. Making sense of a haemolysis monitoring and reporting system: a nationwide longitudinal multimethod study of 68 Australian laboratory participant organisations. ACTA ACUST UNITED AC 2017; 56:565-573. [DOI: 10.1515/cclm-2017-0056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 08/09/2017] [Indexed: 11/15/2022]
Abstract
Abstract
Background:
The key incident monitoring and management systems (KIMMS) quality assurance program monitors incidents in the pre- and postanalytical phases of testing in medical laboratories. Haemolysed specimens have been found to be the most frequent preanalytical error and have major implications for patient care. The aims of this study were to assess the suitability of KIMMS for quality reporting of haemolysis and to devise a meaningful method for reporting and monitoring haemolysis.
Methods:
A structured survey of 68 Australian KIMMS laboratory participant organisations was undertaken. Quarterly haemolysis reports (2011–2014) were analysed.
Results:
Among 110 million accessions reported, haemolysis rates varied according to the reporting methods that participants used for assigning accessions (16% of participants reported haemolysis by specimen and 83% reported by episode) and counting haemolysis rejections (61% by specimen, 35% by episode and 3% by test). More than half of the participants (56%) assigned accessions by episode and counted rejections by specimen. For this group, the average haemolysis rate per 100,000 episodes was 177 rejected specimens with the average rate varying from 100 to 233 over time. The majority of participants (91%) determined rejections using the haemolysis index. Two thirds of participants (66%) recorded the haemolysis manually in laboratory information systems.
Conclusions:
KIMMS maintains the largest longitudinal haemolysis database in the world. However, as a means of advancing improvements in the quality of the preanalytical laboratory process, there is a need to standardise reporting methods to enable robust comparison of haemolysis rejection rates across participant laboratories.
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Affiliation(s)
- Ling Li
- Centre for Health Systems and Safety Research , Australian Institute of Health Innovation , Macquarie University , Sydney, NSW , Australia
| | - Elia Vecellio
- Centre for Health Systems and Safety Research , Australian Institute of Health Innovation , Macquarie University , Sydney, NSW , Australia
- South Eastern Area Laboratory Services, NSW Health Pathology , Sydney, NSW , Australia
| | - Stephanie Gay
- Royal College of Pathologists Australasia Quality Assurance Programs , St. Leonards, NSW , Australia
| | - Rebecca Lake
- Centre for Health Systems and Safety Research , Australian Institute of Health Innovation , Macquarie University , Sydney, NSW , Australia
| | - Mark Mackay
- Royal College of Pathologists Australasia Quality Assurance Programs , St. Leonards, NSW , Australia
| | - Leslie Burnett
- Genome.One, Garvan Institute of Medical Research , Darlinghurst, NSW , Australia
- Northern Clinical School, Sydney Medical School , University of Sydney , NSW , Australia
| | - Douglas Chesher
- Northern Clinical School, Sydney Medical School , University of Sydney , NSW , Australia
- Pathology North, NSW Health Pathology, Royal North Shore Hospital , St. Leonards, NSW , Australia
| | - Stephen Braye
- Pathology North, NSW Health Pathology, Royal North Shore Hospital , St. Leonards, NSW , Australia
- Pathology North, NSW Health Pathology , Newcastle, NSW , Australia
| | - Tony Badrick
- Royal College of Pathologists Australasia Quality Assurance Programs , St. Leonards, NSW , Australia
| | - Johanna I. Westbrook
- Centre for Health Systems and Safety Research , Australian Institute of Health Innovation , Macquarie University , Sydney, NSW , Australia
| | - Andrew Georgiou
- Centre for Health Systems and Safety Research , Australian Institute of Health Innovation , Macquarie University , Sydney, NSW , Australia
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9
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Nickerson V, Deering J, Alazmei S. Supporting Change in Oncology Nursing Practice in Kuwait. Oncol Nurs Forum 2017. [DOI: 10.1188/17.onf.280-283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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McCaughey EJ, Vecellio E, Lake R, Li L, Burnett L, Chesher D, Braye S, Mackay M, Gay S, Badrick TC, Westbrook JI, Georgiou A. Current Methods of Haemolysis Detection and Reporting as a Source of Risk to Patient Safety: a Narrative Review. Clin Biochem Rev 2016; 37:143-151. [PMID: 28167844 PMCID: PMC5242478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
AIM Haemolysis has a major impact on patient safety as the need for a replacement specimen increases the risk of injury and infection, delays test results and extends the duration of hospital stays. Consistency of haemolysis detection and reporting can facilitate the generation of benchmark data used to develop quality practices to monitor and reduce this leading cause of pre-analytical laboratory error. This review aims to investigate current methods of haemolysis detection and reporting. METHOD Due to known heterogeneity and immaturity of the research field, a scoping search was conducted using PUBMED, Embase, Medline and CINAHL. Articles published between 2000 and 2014 that reported haemolysis rates in specimens from the general population were included. RESULTS Of the 50 studies that met the inclusion criteria, 20 detected haemolysis using the Haemolysis Index (HI), 19 by visual inspection and 13 by undefined methods. There was large intra-study variation in the plasma free haemoglobin level used to establish haemolysis (HI: mean±SD 846±795 mg/L, range 150-3000 mg/L; Visual: 850±436 mg/L, 500-3000 mg/L). Sixteen studies reported the analyte of interest, with only three studies reporting a haemoglobin level at which the specimen would be rejected. CONCLUSION Despite haemolysis being a frequent and costly problem with a negative impact on patient care, there is poor consistency in haemolysis detection and reporting between studies. Improved consistency would facilitate the generation of benchmark data used to create quality practices to monitor and reduce this leading cause of pre-analytical laboratory error.
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Affiliation(s)
- Euan J McCaughey
- Centre for Health Systems and Safety Research, Australian Institute of Health Innovation, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Elia Vecellio
- Centre for Health Systems and Safety Research, Australian Institute of Health Innovation, Macquarie University, North Ryde, NSW, 2109, Australia
- South Eastern Area Laboratory Services, NSW Health Pathology, Prince of Wales Hospital, Randwick, NSW, 2031, Australia
| | - Rebecca Lake
- Centre for Health Systems and Safety Research, Australian Institute of Health Innovation, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Ling Li
- Centre for Health Systems and Safety Research, Australian Institute of Health Innovation, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Leslie Burnett
- South Eastern Area Laboratory Services, NSW Health Pathology, Prince of Wales Hospital, Randwick, NSW, 2031, Australia
- Pathology North, NSW Health Pathology, Royal North Shore Hospital, St Leonards, NSW, 2065, Australia
- Northern Clinical School, Sydney Medical School, University of Sydney, NSW, 2006, Australia
| | - Douglas Chesher
- Pathology North, NSW Health Pathology, Royal North Shore Hospital, St Leonards, NSW, 2065, Australia
- Northern Clinical School, Sydney Medical School, University of Sydney, NSW, 2006, Australia
| | - Stephen Braye
- Pathology North, NSW Health Pathology, Royal North Shore Hospital, St Leonards, NSW, 2065, Australia
- Pathology North, NSW Health Pathology, Newcastle, NSW, 2300, Australia
| | - Mark Mackay
- Pathology North, NSW Health Pathology, Royal North Shore Hospital, St Leonards, NSW, 2065, Australia
- Royal College of Pathologists Australasia Quality Assurance Program, St Leonards, NSW, 2065, Australia
| | - Stephanie Gay
- Royal College of Pathologists Australasia Quality Assurance Program, St Leonards, NSW, 2065, Australia
| | - Tony C Badrick
- Royal College of Pathologists Australasia Quality Assurance Program, St Leonards, NSW, 2065, Australia
| | - Johanna I Westbrook
- Centre for Health Systems and Safety Research, Australian Institute of Health Innovation, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Andrew Georgiou
- Centre for Health Systems and Safety Research, Australian Institute of Health Innovation, Macquarie University, North Ryde, NSW, 2109, Australia
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Farrell CJL, Carter AC. Serum indices: managing assay interference. Ann Clin Biochem 2016; 53:527-38. [DOI: 10.1177/0004563216643557] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2016] [Indexed: 11/17/2022]
Abstract
Clinical laboratories frequently encounter samples showing significant haemolysis, icterus or lipaemia. Technical advances, utilizing spectrophotometric measurements on automated chemistry analysers, allow rapid and accurate identification of such samples. However, accurate quantification of haemolysis, icterus and lipaemia interference is of limited value if laboratories do not set rational alert limits, based on sound interference testing experiments. Furthermore, in the context of increasing consolidation of laboratories and the formation of laboratory networks, there is an increasing requirement for harmonization of the handling of haemolysis, icterus and lipaemia-affected samples across different analytical platforms. Harmonization may be best achieved by considering both the analytical aspects of index measurement and the possible variations in the effects of haemolysis, icterus and lipaemia interferences on assays from different manufacturers. Initial verification studies, followed up with ongoing quality control testing, can help a laboratory ensure the accuracy of haemolysis, icterus and lipaemia index results, as well as assist in managing any biases in index results from analysers from different manufacturers. Similarities, and variations, in the effect of haemolysis, icterus and lipaemia interference in assays from different manufacturers can often be predicted from the mechanism of interference. Nevertheless, interference testing is required to confirm expected similarities or to quantify differences. It is important that laboratories are familiar with a number of interference testing protocols and the particular strengths and weaknesses of each. A rigorous approach to all aspects of haemolysis, icterus and lipaemia interference testing allows the analytical progress in index measurement to be translated into improved patient care.
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Vatankhah E, Prabhakaran MP, Semnani D, Razavi S, Morshed M, Ramakrishna S. Electrospun tecophilic/gelatin nanofibers with potential for small diameter blood vessel tissue engineering. Biopolymers 2016; 101:1165-80. [PMID: 25042000 DOI: 10.1002/bip.22524] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 06/03/2014] [Accepted: 06/26/2014] [Indexed: 01/06/2023]
Abstract
Tissue engineering techniques particularly using electrospun scaffolds have been intensively used in recent years for the development of small diameter vascular grafts. However, the development of a completely successful scaffold that fulfills multiple requirements to guarantee complete vascular regeneration remains challenging. In this study, a hydrophilic and compliant polyurethane namely Tecophilic (TP) blended with gelatin (gel) at a weight ratio of 70:30 (TP(70)/gel(30)) was electrospun to fabricate a tubular composite scaffold with biomechanical properties closely simulating those of native blood vessels. Hydrophilic properties of the composite scaffold induced non-thrombogenicity while the incorporation of gelatin molecules within the scaffold greatly improved the capacity of the scaffold to serve as an adhesive substrate for vascular smooth muscle cells (SMCs), in comparison to pure TP. Preservation of the contractile phenotype of SMCs seeded on electrospun TP(70)/gel(30) was yet another promising feature of this scaffold. The nanostructured TP(70)/gel(30) demonstrated potential feasibility toward functioning as a vascular graft.
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Affiliation(s)
- Elham Vatankhah
- Department of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran; Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, 2 Engineering Drive 3, Singapore 117576, Singapore
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Monneret D. Potassium as a potential predictive biomarker of brain hypoxia in avalanche victims: preanalytical recommendations. Am J Emerg Med 2016; 34:1315-6. [PMID: 27198903 DOI: 10.1016/j.ajem.2016.04.049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 04/28/2016] [Indexed: 10/21/2022] Open
Affiliation(s)
- Denis Monneret
- Department of Metabolic Biochemistry, La Pitié Salpêtrière-Charles Foix University Hospital (AP-HP), Paris, France.
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