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Henriksson HB, Hellström A, Nilsson AK, Sjöbom U, Jönsson B, Frändberg S. Bacterial species in cord blood and their significance in the context of clinical use. Transfus Apher Sci 2024; 63:103961. [PMID: 38981148 DOI: 10.1016/j.transci.2024.103961] [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: 01/10/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 07/11/2024]
Abstract
Approximately 90 % of infants born before 28 full weeks(extremely-preterm-infants) receive erythrocyte transfusions in early life. Umbilical cord blood(UCB) has been investigated as an alternative source for erythrocyte transfusions to preterm neonates. This retrospective study aimed to compile/evaluate spectrum of bacteria groups/species intermittently detected in processed UCB at National-Swedish-Cord blood bank, (NS-CBB) during the years 2008-2020. Consecutive data from the years 2008-2020 were investigated. UCB from healthy newborns born after 37 full weeks of gestation was collected following clamping of cord (1 min) through cannulation of umbilical vein(vaginal-and C-section-deliveries). In total, 5194 cord blood units (UCBUs) that met NS-CBB-guidelines for total nucleated-cell-content(TNC) were manufactured from 8875 collections. Of 5194 UCBUs,77,6 % were from vaginal-and 22,4 % from C-section deliveries.Samples(10 mL) were collected from surplus eryhtrocyte fraction post-processing(n = 5194), transferred into BACT/ALERT® aerobic/anaerobic culture flasks and monitored 10 days using BACT/ALERT®-3D-Microbial-Detection-Systems. Positive samples were subcultured and typed for bacterial groups and/or species. Out of 5194 processed sampled UCB units,186 (3,6 %) were discarded due to positive sterility tests, 92 % were detected in samples from vaginal-deliveries and 8 % from C-section-deliveries. In all,16 different groups of bacteria and 27 species were identified. Common bacterial/groups and species were anaerobe gram-negative rods(n = 28),coagulase-negative-staphylococci(n = 21),gram-positive rods(n = 21),anaerobe-gram-positive cocci(n = 20) and viridans-streptococci(n = 13). Extracted from these results,in positive samples(n = 13) from C-section deliveries, bacteria were found:viridans-streptococci(n = 7),Aerococcus-urinae(n = 1), Staphylococcus lugdunensis(n = 1),other coagulase-negative staphylococci(n = 1) or a mix of aerobic/anaerobic bacteria(n = 3). Our results are in alignment with previously published contamination rates in processed UCBUs. Still, results point towards importance of strict microbial monitoring when manufacturing UCBUs to achieve patient-safe- products for stem-cell transplantation/transfusion.
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Affiliation(s)
- Helena Barreto Henriksson
- Department of Laboratory Medicine, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Research, Development, Education and Innovation, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Ann Hellström
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anders K Nilsson
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Ulrika Sjöbom
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Learning and Leadership for Health Care Professionals at the Institute of Health and Care Science at Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Bodil Jönsson
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden; Department of Clinical Immunology and Transfusion Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Sofia Frändberg
- Department of Laboratory Medicine, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Clinical Immunology and Transfusion Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden.
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Tajalli S, Vafaee A, Safi H, Moghaddam AN, Fallahi M. Acquired Cytomegalovirus Retinitis in Preterm Infant Hospitalized in the NICU: A Noteworthy Case Report. Adv Neonatal Care 2024:00149525-990000000-00130. [PMID: 38949554 DOI: 10.1097/anc.0000000000001174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
BACKGROUND Acquired human cytomegalovirus (CMV) is a noteworthy disease in infants. This case study will highlight the influence of early diagnosis of CMV retinitis (CMVR) on avoid visual impairment. CLINICAL FINDINGS We describe a preterm female infant with a birth weight of 2060 gr that was admitted for tracheostomy placement due to hypoxic-ischemic encephalopathy. There were no signs of CMV infection or sepsis in laboratory results upon admission such as serology (IgG, IgM antibodies), Toxoplasma gondii, Rubella virus, Herpes simplex virus, CMVR and urine polymerase chain reaction (PCR). PRIMARY DIAGNOSIS Incidentally, upon screening for retinopathy of prematurity, diffuse occlusive vasculitis was detected in the retinal image on the 112th day of life. INTERVENTION Intravenous and intraocular ganciclovir were administered for 4 weeks. OUTCOMES In the follow-up visit 6 weeks after discharge from the hospital, visual impairment was detected on both sides. PRACTICE RECOMMENDATIONS This is a report of a case of acquired CMVR, a silent finding, as an uncommon complication in preterm neonates during the hospital stay. This diagnosis should be taken into consideration in preterm infants, since early diagnosis and treatment are crucial to avoid visual impairment.
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Affiliation(s)
- Saleheh Tajalli
- Author Affiliations: School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran (Dr Tajalli and Mr Vafaee); and Neonatal Health Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran (Drs Safi, Navidi Moghaddam, and Fallahi)
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Gonzalez-Suarez AM, Long A, Huang X, Revzin A. A Compact Control System to Enable Automated Operation of Microfluidic Bioanalytical Assays. BIOSENSORS 2022; 12:1160. [PMID: 36551127 PMCID: PMC9775492 DOI: 10.3390/bios12121160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 06/17/2023]
Abstract
We describe a control system for operating valve-enabled microfluidic devices and leverage this control system to carry out a complex workflow of plasma separation from 8 μL of whole blood followed by on-chip mixing of plasma with assay reagents for biomarker detection. The control system incorporates pumps, digital pressure sensors, a microcontroller, solenoid valves and off-the-shelf components to deliver high and low air pressure in the desired temporal sequence to meter fluid flow and actuate microvalves. Importantly, our control system is portable, which is suitable for operating the microvalve-enabled microfluidic devices in the point-of-care setting.
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Affiliation(s)
| | - Alexander Long
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
- Department of Biology, St. Olaf College, Northfield, MN 55057, USA
| | - XuHai Huang
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Alexander Revzin
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
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Haghpanah S, Miladi S, Zamani A, Abadi AMKH, Gholami M, Gholami M. A cost-analysis study of using adult red cell packs and Pedi-Packs in newborn intensive care units in Southern Iran. COST EFFECTIVENESS AND RESOURCE ALLOCATION 2021; 19:15. [PMID: 33676529 PMCID: PMC7937218 DOI: 10.1186/s12962-021-00267-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 02/23/2021] [Indexed: 11/12/2022] Open
Abstract
Background and objective Saving blood products is an important public health issue especially in developing countries with limited financial resources. We aimed to suggest a new hypothetical model to make a change in the current blood transfusion policy in the newborn intensive care unit (NICU) to reduce wastage of blood supplies as well as the risk of exposure to multiple donors. Methods In this cross-sectional study, all transfused neonates (n = 70) who were admitted to NICU of Nemazee Hospital, a tertiary referral hospital in Southern Iran, were evaluated between March and June 2019. Based on the information of neonates’ transfusion during this study period and determined transfusion indices, a specific pediatric pack was suggested and the related total costs per transfusion, as well as the donor-exposure rate of the hypothetical and the current transfusion method, were compared. Results Considering the mean number of transfusions per neonate: 4 and mean volume of transfused packed red cells: 20 ml per transfusion, the cost-analysis of pediatric and the adult pack was presented. Arithmetically, we proved a higher total cost per transfusion for using adult pack comparing to pediatric pack. Additionally, using a pediatric pack set leads to a 24% reduction in RBCs wastage per transfusion and a 68.13% reduction in donor-exposure rate. Conclusions The assignment of a dedicated pediatric pack for neonates will be able to improve the cost-effectiveness by a substantial reduction in donor-exposure rate and blood wastage. This finding should be taken into consideration to generate economic growth and make improvements in child health status.
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Affiliation(s)
- Sezaneh Haghpanah
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shima Miladi
- Clinical Research Development Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Zamani
- Blood Bank, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Marjan Gholami
- Clinical Research Development Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Gholami
- Clinical Research Development Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.
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Ohto H. Extension of Homo Sapiens Adapting to Every Environment with Divertgent Phenotypes: Blood Type Incompatible in Pregnancy as an Abaxial Phenomenon. Transfus Apher Sci 2020; 59:102943. [PMID: 33059996 PMCID: PMC7521375 DOI: 10.1016/j.transci.2020.102943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Hitoshi Ohto
- Fukushima Medical University, Fukushima City, Fukushima 960-1295, Japan.
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