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Hsu MC, Mansouri M, Ahamed NNN, Larson SM, Joshi IM, Ahmed A, Borkholder DA, Abhyankar VV. A miniaturized 3D printed pressure regulator (µPR) for microfluidic cell culture applications. Sci Rep 2022; 12:10769. [PMID: 35750792 PMCID: PMC9232624 DOI: 10.1038/s41598-022-15087-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/17/2022] [Indexed: 01/17/2023] Open
Abstract
Well-defined fluid flows are the hallmark feature of microfluidic culture systems and enable precise control over biophysical and biochemical cues at the cellular scale. Microfluidic flow control is generally achieved using displacement-based (e.g., syringe or peristaltic pumps) or pressure-controlled techniques that provide numerous perfusion options, including constant, ramped, and pulsed flows. However, it can be challenging to integrate these large form-factor devices and accompanying peripherals into incubators or other confined environments. In addition, microfluidic culture studies are primarily carried out under constant perfusion conditions and more complex flow capabilities are often unused. Thus, there is a need for a simplified flow control platform that provides standard perfusion capabilities and can be easily integrated into incubated environments. To this end, we introduce a tunable, 3D printed micro pressure regulator (µPR) and show that it can provide robust flow control capabilities when combined with a battery-powered miniature air pump to support microfluidic applications. We detail the design and fabrication of the µPR and: (i) demonstrate a tunable outlet pressure range relevant for microfluidic applications (1-10 kPa), (ii) highlight dynamic control capabilities in a microfluidic network, (iii) and maintain human umbilical vein endothelial cells (HUVECs) in a multi-compartment culture device under continuous perfusion conditions. We anticipate that our 3D printed fabrication approach and open-access designs will enable customized µPRs that can support a broad range of microfluidic applications.
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Affiliation(s)
- Meng-Chun Hsu
- Department of Electrical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Mehran Mansouri
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Nuzhet N N Ahamed
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Stephen M Larson
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Indranil M Joshi
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Adeel Ahmed
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - David A Borkholder
- Department of Electrical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Vinay V Abhyankar
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA.
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Influence of Peripherally Inserted Central Catheters With Proximal Valves on Red Blood Cell Hemolysis During Transfusion. JOURNAL OF INFUSION NURSING 2022; 45:88-94. [PMID: 35272305 DOI: 10.1097/nan.0000000000000457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The aim of this study was to verify the occurrence of hemolysis after infusion of packed red blood cells (PRBCs) in 12 peripherally inserted central catheters (PICCs) with a proximal valve, according to size and infusion rate. This was an experimental in vitro study performed under laboratory-controlled conditions, and the sample was composed of 12 PICCs with proximal valves (3F and 4F catheter). Twelve type A+ aliquots from 10 PRBCs were analyzed preinfusion and postinfusion according to PICC size and infusion rate. Hemolysis markers, total hemoglobin (g/dL), hematocrit (%), free hemoglobin (g/dL), potassium (mmol/L), lactate dehydrogenase (U/L), and rate of hemolysis (%) were studied. Data were analyzed using analysis of variance and Bonferroni multiple comparison tests. After the infusions in 3F PICCs, an increase was seen in rate of hemolysis (P = .003) and free hemoglobin (P = .014), in addition to a reduction in total hemoglobin (P = .002), with significant influence of minimum and maximum flow rates on the rate of hemolysis. The study finding indicated that the smaller catheter size and the infusion rate influenced variations in some hemolysis markers, but the alterations observed in the hemolysis markers would not contraindicate the infusion of PRBCs by 3F and 4F PICCs with proximal valves.
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Hadjesfandiari N, Serrano K, Levin E, Johal P, Feenstra S, Shih AW, Devine DV. Effect of modern infusion pumps on RBC quality. Transfusion 2022; 62:797-808. [PMID: 35213738 DOI: 10.1111/trf.16833] [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: 11/03/2021] [Revised: 02/03/2022] [Accepted: 02/14/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Mechanical stress on red blood cells is associated with using infusion pumps for blood administration. Current standards in North America leave it to healthcare facilities to consult with manufacturers about infusion pump safety for transfusion; studies on various pumps and red blood cell (RBC) conditions are scarce. STUDY DESIGN AND METHODS RBC units were pumped through four infusion pumps on d22 (22 days postcollection), d40, d28 after gamma irradiation on d14 (I14d28), and d22 after irradiation on d21 (I21d22). For each experiment, three units were pooled and split among four bags. Samples were collected at gravity and after pumping at clinical nonemergency rates. Hemolysis %, microvesicles, potassium, lactate dehydrogenase, mechanical fragility index levels, and morphology evaluations were performed (n = 5-6). RESULTS Hemolysis levels of Piston and Linear Peristaltic pump samples were not different from hemolysis of corresponding gravity samples. Peristaltic samples had significantly higher hemolysis compared to gravity, and other pumps, however, maximum mean difference was limited to 0.05%. Pumping at 50 mL/h resulted in the highest hemolysis level. Change in hemolysis % due to pumping was significantly higher in d40 and I21d22 units. No combination of pumps and RBCs conditions led to hemolysis >0.8%. Besides hemolysis, lactate dehydrogenase release was the only marker that demonstrated some differences between infusions via pump versus gravity. CONCLUSION The pump design affects the degree of hemolysis. However, for all tested pumps and RBC conditions, this increase was minimal. Hemolysis measurement on d40 and I21d22 at 50 mL/h were concluded to be appropriate parameters for pump evaluation.
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Affiliation(s)
- Narges Hadjesfandiari
- Centre for Innovation, Canadian Blood Services, 4450-2350 Health Sciences Mall, Vancouver, British ColumbiaV6T 1Z3, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Katherine Serrano
- Centre for Innovation, Canadian Blood Services, 4450-2350 Health Sciences Mall, Vancouver, British ColumbiaV6T 1Z3, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Elena Levin
- Centre for Innovation, Canadian Blood Services, 4450-2350 Health Sciences Mall, Vancouver, British ColumbiaV6T 1Z3, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada
| | - Parveen Johal
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Shelley Feenstra
- Department of Pathology and Laboratory Medicine, Vancouver Coastal Health Authority, Vancouver, British Columbia, Canada
| | - Andrew W Shih
- Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, Vancouver Coastal Health Authority, Vancouver, British Columbia, Canada
| | - Dana V Devine
- Centre for Innovation, Canadian Blood Services, 4450-2350 Health Sciences Mall, Vancouver, British ColumbiaV6T 1Z3, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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Blasi-Brugué C, Sanchez IM, Ferreira RRF, de Matos AJF, Ruiz de Gopegui R. Quantitative assessment of infusion pump-mediated haemolysis in feline packed red blood cell transfusions. J Feline Med Surg 2021; 23:1149-1154. [PMID: 33719675 PMCID: PMC10812153 DOI: 10.1177/1098612x21999990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Haemolysis caused by the use of peristaltic infusion pumps (PIPs) has been described in human and canine packed red blood cells (pRBCs). The aim of this study was to evaluate the effects of two different linear PIPs on the haemolysis of feline pRBC units stored for a long time. METHODS Feline pRBC units stored with adenine, dextrose, mannitol and sodium chloride (SAGM) were manufactured. After 35-42 days of storage at 2-4°C, a line administration system with a 180 µm filter was attached to every pRBC bag, the system was drained by gravity alone (8 drops/min) and a 1.3 ml sample was collected (G). A NIKI V4 pump was then used at a flow rate of 25 ml/h, the flow was stopped when the infusion system was filled with blood coming from the infusion pump and another 1.3 ml sample was collected (NK). Finally, an Infusomat FmS pump was evaluated, collecting another 1.3 ml sample (IM). Packed cell volume (PCV) was measured in all samples by microhaematocrit centrifugation, total haemoglobin (HGB) was measured using a specific haemoglobin analyser and, after centrifugation, free HGB was determined by spectrophotometry. The percentage of haemolysis was calculated. Friedman's test was used to compare the samples. RESULTS Fifteen feline pRBC units were evaluated. The average degree of haemolysis for sample G (gravity-assisted) was 1.12%. Comparison of the degree of gravity-assisted haemolysis with haemolysis in PIP NK (1.13%) and IM (1.14%) samples revealed no significant differences, with differences of only 0.01% and 0.02%, respectively. CONCLUSIONS AND RELEVANCE The results of this study demonstrate that the use of two common PIPs in veterinary hospitals does not produce levels of haemolysis that are significantly different than that caused by gravity alone during transfusion of feline pRBCs at a rate of 25 ml/h.
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Affiliation(s)
- Carles Blasi-Brugué
- Department of Animal Medicine and Surgery, Veterinary Faculty, Autonomous University of Barcelona, Barcelona, Spain
| | - Ignacio M Sanchez
- Animal Blood Bank, Barcelona, Spain
- Department of Internal Medicine, Hospital Aúna Especialidades Veterinarias, Valencia, Spain
| | - Rui RF Ferreira
- Animal Blood Bank, Barcelona, Spain
- Animal Blood Bank, Porto, Portugal
| | - Augusto JF de Matos
- Animal Science and Study Centre, Food and Agrarian Sciences and Technologies Institute, University of Porto, Porto, Portugal
- Department of Veterinary Clinics, Institute for Biomedical Sciences of Abel Salazar, University of Porto, Porto, Portugal
| | - Rafael Ruiz de Gopegui
- Department of Animal Medicine and Surgery, Veterinary Faculty, Autonomous University of Barcelona, Barcelona, Spain
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Weeks JM, Motsinger-Reif AA, Reems MM. In vitro iatrogenic hemolysis of canine packed red blood cells during various rapid transfusion techniques. J Vet Emerg Crit Care (San Antonio) 2020; 31:25-31. [PMID: 33142048 DOI: 10.1111/vec.13020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/28/2019] [Accepted: 04/23/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To evaluate which rapid blood administration technique causes the least iatrogenic hemolysis in canine packed red blood cells (pRBCs) as determined by plasma free hemoglobin (fHb) and percent hemolysis (% hemolysis). DESIGN Prospective in vitro randomized study. SETTING Private referral center. ANIMALS None. INTERVENTIONS Thirteen units of canine pRBCs were divided equally into 5 aliquots, resulting in 65 trials. The aliquots of each unit were subjected to the following administration techniques: gravity-driven (control), an infusion pump at maximal rate, application of a pressure bag, manual compression, and syringe bolus. Plasma fHb and % hemolysis were recorded before and after each trial. Rate of administration (mL/s) was calculated for each method. MEASUREMENTS AND MAIN RESULTS Compared to the control, there were no significant increases in % hemolysis or plasma fHb noted among any of the trial methods. The manual compression and syringe bolus methods resulted in the fastest transfusion rates, whereas the infusion pump was not faster than the gravity-driven method. Despite a storage time of ≤14 days, 15% of pRBC units had unsuitable (>0.8%) hemolysis before even being subjected to the trials. CONCLUSIONS Commonly used rapid infusion techniques in small animal transfusion medicine do not cause significant iatrogenic hemolysis of canine pRBCs in vitro, although a significant risk is present in stored blood. This suggests that if an expedited transfusion is needed, any method described in this study could be considered, although stored pRBCs should be tested for unsuitable levels of hemolysis prior to transfusion.
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Affiliation(s)
- Jessica M Weeks
- Department of Small Animal Emergency and Critical Care, BluePearl Veterinary Partners, Tampa, Florida
| | - Alison A Motsinger-Reif
- The Bioinformatics Research Center, Department of Statistics, College of Sciences, North Carolina State University, Raleigh, North Carolina
| | - Miryam M Reems
- Department of Small Animal Emergency and Critical Care, BluePearl Veterinary Partners, Tampa, Florida
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Pardo LP, Peterlini MAS, Tume LN, Pedreira MLG. Impact of different syringe pumps on red cells during paediatric simulated transfusion. Nurs Crit Care 2020; 27:267-274. [PMID: 33094901 DOI: 10.1111/nicc.12561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 09/19/2020] [Accepted: 09/23/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Critically ill patients frequently need blood transfusions. For safety, blood must be delivered via syringe infusion pumps, yet this can cause red cell damage and increase the rate of haemolysis. AIMS AND OBJECTIVES To evaluate biochemical and haemolytic markers of red blood cells transfused in three different types of syringe infusion pumps at two different infusion rates (10 and 100 mL/h). DESIGN AND METHODS A lab-based study using aliquots of 16 red blood cell bags was undertaken. Haemolysis markers (total haemoglobin [g/dL], haematocrit [%], free haemoglobin [g/dL], potassium [mmol/L], lactate dehydrogenase [U/L], osmolality [mOsm/kg], pH, degree of haemolysis [%]) were measured before and after red blood cell infusion and exposure. Three different syringe infusion pumps brands (A, B, and C) were compared at two different infusion rates (10 and 100 mL/h). RESULTS Total haemoglobin fell significantly in all red blood cell units during manipulation (pre-infusion: 26.44 ± 5.74; post-exposure: 22.62 ± 4.00; P = .026). The degree of haemolysis significantly increased by 40% after manipulation of the red blood cells. Syringe infusion pump A caused a 3-fold increase in potassium levels (3.78 ± 6.10) when compared with B (-0.14 ± 1.46) and C (1.63 ± 1.98) (P = .015). This pump also produced the worst changes, with an increase in free haemoglobin (0.05 ± 0.05; P = .038) and more haemolysis (0.08 ± 0.07; P = .033). There were significant differences and an increase in the degree of haemolysis (P = .004) at the infusion rate of 100 mL/h. CONCLUSIONS Syringe infusion pumps may cause significant red blood cell damage during infusion, with increases in free haemoglobin, potassium, and the degree of haemolysis. Some pump types, with a cassette mechanism, caused more damage. RELEVANCE TO CLINICAL PRACTICE In many intensive care units, bedside nurses are able to consider infusion pump choice, and understanding the impact of different pump types on red blood cells during a transfusion provides the nurses with more information to enhance decision-making and improve the quality of the transfusion.
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Affiliation(s)
- Larissa Perez Pardo
- Department of Nursing, Paulista University, Sao Paulo, Brazil.,Paulista Nursing School, Universidade Federal de São Paulo - UNIFESP, Sao Paulo, Brazil
| | - Maria Angélica Sorgini Peterlini
- Department of Paediatric Nursing, Paulista School of Nursing, Universidade Federal de São Paulo - UNIFESP, Sao Paulo, Brazil.,Nursing Postgraduate Program, Paulista School of Nursing, UNIFESP, Sao Paulo, Brazil
| | | | - Mavilde Luz Gonçalves Pedreira
- Department of Paediatric Nursing, Paulista School of Nursing, Universidade Federal de São Paulo - UNIFESP, Sao Paulo, Brazil.,Department of Paediatric Nursing, Paulista School of Nursing, Universidade Federal de São Paulo - UNIFESP, Sao Paulo, Brazil
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Pires MPO, Peterlini MAS, Ullman AJ, Bulmer AC, Rickard CM, Pedreira MLG. Effect of warming and infusion of red blood cell concentrates on markers of haemolysis: An ex vivo simulation study. Aust Crit Care 2020; 34:235-240. [PMID: 33069589 DOI: 10.1016/j.aucc.2020.08.003] [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: 03/12/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Transfusion of red blood cell (RBC) concentrates is a common procedure to restore blood volume and tissue oxygen delivery in patients with trauma. Although RBC warmers may prevent hypothermia, some warming or infusion equipment may lead to haemolysis and patient injury. OBJECTIVES The aim of this study was to test the effect of (i) RBC warming and (ii) administration via manual vs. pump infusion on haemolysis. METHODS This experimental ex vivo study studied haemolysis markers of RBC injury. The sample consisted of 90 RBC infusions in two simulations, randomly, 45 warmed RBC infusions and 45 nonwarmed RBC infusions, in two or three stages: before the intervention (baseline-warming, N= 45; nonwarming, N= 45), after water bath warming at 42 °C (warmed, N= 45), and then after the warmed or nonwarmed RBCs were infused by manual or pump infusion at a rate of 100 mL/h (infusion-warming, N= 45; nonwarming, N= 45). RESULTS Warmed RBCs showed significantly lower total haemoglobin (Hb) and haematocrit levels and increase in free Hb levels, haemolysis levels, and lactate dehydrogenase (LDH) activity (all p<0.05) than baseline RBCs. Pump infusion RBCs were associated with reduced total Hb and increased free Hb, haemolysis, and potassium (K) levels (all p<0.05) compared with warmed RBCs. In contrast, manual infusion of warmed RBCs resulted in significantly reduced total Hb levels and increased LDH activity (both <0.05). After infusion, total Hb, free Hb, haematocrit, haemolysis, and LDH values were significantly different for warmed vs. nonwarmed RBCs (p<0.05). CONCLUSIONS Haemolysis biomarkers increase with RBC warming and infusion, especially when using infusion pumps. Critically ill patients should be carefully monitored for possible complications during and after RBC infusion.
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Affiliation(s)
- Maria Paula Oliveira Pires
- Safety, Technology and Care Research Group, Department of Paediatric Nursing, Universidade Federal de São Paulo (Federal University of Sao Paulo), R. Napoleão de Barros, 754 - Vila Clementino, Sao Paulo, SP, 04024-002, Brazil; Alliance for Vascular Access Teaching and Research Group, School of Nursing and Midwifery, Menzies Health Institute Queensland, Griffith University, 170 Kessels Road Nathan, Qld, 4111, Brisbane, Queensland, Australia; Paulista University, Health Sciences Institution, R. Vergueiro, 1211 - Aclimação, Sao Paulo, SP, 01533-000, Brazil.
| | - Maria Angélica Sorgini Peterlini
- Safety, Technology and Care Research Group, Department of Paediatric Nursing, Universidade Federal de São Paulo (Federal University of Sao Paulo), R. Napoleão de Barros, 754 - Vila Clementino, Sao Paulo, SP, 04024-002, Brazil.
| | - Amanda J Ullman
- Alliance for Vascular Access Teaching and Research Group, School of Nursing and Midwifery, Menzies Health Institute Queensland, Griffith University, 170 Kessels Road Nathan, Qld, 4111, Brisbane, Queensland, Australia.
| | - Andrew C Bulmer
- Alliance for Vascular Access Teaching and Research Group, School of Medical Science, Menzies Health Institute Queensland, Griffith University, Parklands Dr Southport, Qld, 4215, Gold Coast, Queensland, Australia.
| | - Claire M Rickard
- Alliance for Vascular Access Teaching and Research Group, School of Nursing and Midwifery, Menzies Health Institute Queensland, Griffith University, 170 Kessels Road Nathan, Qld, 4111, Brisbane, Queensland, Australia.
| | - Mavilde Luz Gonçalves Pedreira
- Safety, Technology and Care Research Group, Department of Paediatric Nursing, Universidade Federal de São Paulo (Federal University of Sao Paulo), R. Napoleão de Barros, 754 - Vila Clementino, Sao Paulo, SP, 04024-002, Brazil; Alliance for Vascular Access Teaching and Research Group, School of Nursing and Midwifery, Menzies Health Institute Queensland, Griffith University, 170 Kessels Road Nathan, Qld, 4111, Brisbane, Queensland, Australia.
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Smith EA, Gray G. Developing a Smart Infusion Pump Dedicated to Infusion Safety. ERGONOMICS IN DESIGN 2020. [DOI: 10.1177/1064804620944760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A large-volume infusion pump is a medical device with a big job: infuse patients with life-sustaining fluids and medications at a known and controlled rate. And, do it safely. Because infusions are frequently administered therapies, the opportunity for use error–induced adverse events is amplified. To develop a safer infusion pump, Ivenix, Inc., committed to a comprehensive usability engineering effort that included over 400 hours of usability testing. As a result, the pump’s design includes risk controls for mitigating potential use errors not available on today’s pumps. The resulting product was the winner of the 2019 Stanley Caplan User-Centered Design Award.
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Ong JW, Chung DCK, Lin ES, Abid HA, Liew OW, Ng TW. Syringe infusion pump with absolute piston displacement control. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:076108. [PMID: 31370467 DOI: 10.1063/1.5099271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 06/27/2019] [Indexed: 06/10/2023]
Abstract
A vast majority of syringe pumps operate on stepper motors, which limits their effectiveness for precision fluid delivery using estimation algorithms. Such a system also hampers the ability to ascertain if the infusion or aspiration instruction has been correctly carried out in the event of power interruptions. To address this issue, a linear servo based actuator system is described to provide absolute indications of the plunger position. System performance in terms of linearity and reliability of plunger translation were verified using a camera tracking system with syringe capacities ranging from 3 to 50 ml and at syringe plunger speeds ranging from 1 to 6.6 mm/s when distilled water was used as the medium. In investigations involving more viscous liquids, the system revealed similarly linear characteristics with 50% glycerol-water (v/v), but cyclical stick-slip behavior with Freund's adjuvant.
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Affiliation(s)
- Jian Wern Ong
- Laboratory for Optics and Applied Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton VIC3800, Australia
| | - Dwayne Chung Kim Chung
- Laboratory for Optics and Applied Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton VIC3800, Australia
| | - Eric Shen Lin
- Laboratory for Optics and Applied Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton VIC3800, Australia
| | - Hassan Ali Abid
- Laboratory for Optics and Applied Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton VIC3800, Australia
| | - Oi Wah Liew
- Cardiovascular Research Institute, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Centre for Translational Medicine, 14 Medical Drive, Singapore
| | - Tuck Wah Ng
- Laboratory for Optics and Applied Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton VIC3800, Australia
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Levels of Hemolysis Markers in Erythrocyte Concentrates Administered Using a Syringe Infusion Pump. JOURNAL OF INFUSION NURSING 2018; 41:180-188. [PMID: 29659466 DOI: 10.1097/nan.0000000000000280] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Syringe infusion pumps (SIPs) led to major advances in infusion therapy and were gradually applied to the transfusion of packed red blood cells (RBCs), raising questions about possible cell damage. The objectives of this study were to determine levels of hematocrit (%), total hemoglobin (g/dL), free hemoglobin (g/dL), lactate dehydrogenase (units/L), potassium (mmol/L), the degree of hemolysis (%) of RBCs infused by an SIP, and to investigate the influence of the infusion rate. The experimental study comprised 14 RBCs, 3 SIPs, and infusion rates of 5, 10, and 20 mL/h. The results showed total hemoglobin reduction (P = .003), and increased free hemoglobin and hemolysis (P <.001) were identified. The conclusion reached was that RBCs presented changes in free hemoglobin and degree of hemolysis.
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