452 results match your criteria pneumatic tube

Impact of centrifugation time and pneumatic tube transport on plasma concentrations of direct oral anticoagulants.

Int J Lab Hematol 2021 Oct 12. Epub 2021 Oct 12.

Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark.

Introduction: Rapid results are needed when plasma concentrations of direct oral anticoagulants (DOACs) are required in acute clinical settings. We evaluated the impact of centrifugation time and pneumatic tube transport on DOAC plasma concentrations with the overall aim of reducing turnaround time.

Methods: Blood samples were spiked with rivaroxaban, apixaban or dabigatran in a low and a high concentration prior to centrifugation for 25 minutes (3163 g) or 5 minutes (3000 g) (n = 20 for each DOAC). Read More

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October 2021

International Council for Standardization in Haematology (ICSH) recommendations for processing of blood samples for coagulation testing.

Int J Lab Hematol 2021 Sep 27. Epub 2021 Sep 27.

Christian Medical College, Vellore, India.

This guidance document has been prepared on behalf of the International Council for Standardization in Haematology (ICSH). The aim of the document is to provide guidance and recommendations for the processing of citrated blood samples for coagulation tests in clinical laboratories in all regions of the world. The following areas are included in this document: Sample transport including use of pneumatic tubes systems; clots in citrated samples; centrifugation; primary tube storage and stability; interfering substances including haemolysis, icterus and lipaemia; secondary aliquots-transport, storage and processing; preanalytical variables for platelet function testing. Read More

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September 2021

Exploring Tourniquet Conversion in Simulation to Develop Concepts and Hypotheses.

J Spec Oper Med 2021 ;21(3):23-29

Background: Compared with those of tourniquet application, tourniquet conversion concepts are underdeveloped. The purpose of this project was to develop tourniquet conversion concepts and generate hypotheses.

Methods: One person performed 100 tests of tourniquet application and conversion. Read More

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September 2021

The effects of transport by pneumatic tube system on urine analysis.

Scand J Clin Lab Invest 2021 Sep 4;81(5):361-364. Epub 2021 Aug 4.

Biochemistry Department, Ministry of Health Ankara City Hospital, Ankara, Turkey.

The pneumatic tube transport system (PTS) is used frequently for the transport of samples in hospitals. Effects of PTS on urine components are unknown. In our study, we aim to examine the influence of PTS on the quality of routine urine microscopic parameters. Read More

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September 2021

Current Trends in Percutaneous Nephrolithotomy in China: A Spot Survey.

Risk Manag Healthc Policy 2021 16;14:2507-2515. Epub 2021 Jun 16.

Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, The People's Republic of China.

Objective: To describe trends in the procedure of percutaneous nephrolithotomy (PCNL) in China to identify training needs.

Methods: A spot survey with 36 questions, which revealed demographic data, patterns of PCNL practice, and opinions regarding specific clinical cases, was administered to Chinese urologists during the 17 National Urological Urolithiasis Symposium held in Dandong in 2018.

Results: Out of 400 participants, 221 responses to the survey were received. Read More

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Effects of a pneumatic tube system on the hemolysis of blood samples: a PRISMA-compliant meta-analysis.

Scand J Clin Lab Invest 2021 Sep 10;81(5):343-352. Epub 2021 Jun 10.

Nursing Department, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.

Many studies have explored how using a pneumatic tube system (PTS) is related to the hemolysis of blood samples, but their conclusions have been inconsistent. This meta-analysis was to clarify whether using a PTS induces the hemolysis of blood samples. The PubMed, Embase, Scopus, CNKI, CqVip, SinoMed and WanFang databases were searched for studies published between January 1970 and August 2019. Read More

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September 2021

Comparison of standard- and mini-percutaneous nephrolithotomy for staghorn stones.

Arab J Urol 2021 Jan 21;19(2):147-151. Epub 2021 Jan 21.

Urology Unit, Al-Amiri Hospital, Kuwait City, Kuwait.

: To compare the outcomes of standard- and mini-percutaneous nephrolithotomy (PCNL) for the treatment of staghorn stones. : The data of consecutive adult patients who underwent PCNL for the treatment of staghorn stones, between July 2015 and December 2019 from three hospitals, were retrospectively reviewed. All cases were performed in a prone position under fluoroscopic guidance. Read More

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January 2021

Role of POC INR in the early stage of diagnosis of coagulopathy.

Pract Lab Med 2021 Aug 23;26:e00238. Epub 2021 May 23.

Department of Anaesthesiology, Intensive Care Medicine and Emergency Medicine, Asklepios Clinics Hamburg, AK Wandsbek, Alphonsstraße 14, 22043, Hamburg, Germany.

Background: Acute bleeding requires fast and targeted therapy. Therefore, knowledge of the patient's potential to form a clot is crucial. Point-of-care testing (POCT) provides fast and reliable information on coagulation. Read More

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Cavatappi artificial muscles from drawing, twisting, and coiling polymer tubes.

Sci Robot 2021 Apr;6(53)

Department of Mechanical Engineering, Northern Arizona University, 2112 S. Huffer Lane., Flagstaff, AZ 86011, USA.

Compliant, biomimetic actuation technologies that are both efficient and powerful are necessary for robotic systems that may one day interact, augment, and potentially integrate with humans. To this end, we introduce a fluid-driven muscle-like actuator fabricated from inexpensive polymer tubes. The actuation results from a specific processing of the tubes. Read More

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Prediction of velocity profile of water based copper nanofluid in a heated porous tube using CFD and genetic algorithm.

Sci Rep 2021 05 19;11(1):10623. Epub 2021 May 19.

Department of Chemistry, Islamic Azad University, Arak, Iran.

The heat transfer improvements by simultaneous usage of the nanofluids and metallic porous foams are still an attractive research area. The Computational fluid dynamics (CFD) methods are widely used for thermal and hydrodynamic investigations of the nanofluids flow inside the porous media. Almost all studies dedicated to the accurate prediction of the CFD approach. Read More

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Transportation of a commercial premixed intravenous insulin product through a pneumatic tube system.

Am J Health Syst Pharm 2021 Sep;78(18):1720-1723

Michigan Medicine Department of Pharmacy Services, Ann Arbor, MI, USA.

Purpose: Delivery of insulin products via pneumatic tubes is often avoided in health systems, as agitation may cause insulin proteins to destabilize, resulting in loss of function through denaturation, aggregation, or other processes. The actual loss of potency due to delivery via pneumatic tubes has not been reported for new, ready-to-use insulin products.

Methods: Samples were drawn from 7 commercial intravenous (IV) bags containing a 100 units/100 mL premixed solution of regular insulin in sodium chloride injection (Myxredlin, Baxter). Read More

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September 2021

Trends of percutaneous nephrolithotomy in Saudi Arabia.

Urol Ann 2020 Oct-Dec;12(4):352-359. Epub 2020 Oct 15.

Department of Urology, King Fahd Hospital, Jeddah, Saudi Arabia.

Objective: The objective of the study was to present the current practice patterns on percutaneous nephrolithotomy (PCNL) in Saudi Arabia and to compare it with the international patterns and to observe the adherence to the guidelines.

Materials And Methods: A survey consisting of 28 questions was sent to urologists working in Saudi Arabia using a Google Forms questionnaire. The questioner covered most aspects of performing PCNL starting from preparing the patient till discharging him. Read More

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October 2020

Continuous Pneumatic Regulation of Tracheal Cuff Pressure to Decrease Ventilator-associated Pneumonia in Trauma Patients Who Were Mechanically Ventilated: The AGATE Multicenter Randomized Controlled Study.

Chest 2021 Aug 13;160(2):499-508. Epub 2021 Mar 13.

Service des Urgences et SAMU 86 Centre 15, CHU de Poitiers, France; Université de Poitiers, Faculté de Médecine, Poitiers, France; INSERM U1070, Pharmacologie des Agents anti-infectieux, France. Electronic address:

Background: Ventilator-associated pneumonia (VAP) is the most frequent health care-associated infection in severely ill patients, and aspiration of contaminated oropharyngeal content around the cuff of the tracheal tube is the main route of contamination.

Research Question: Is continuous regulation of tracheal cuff pressure using a pneumatic device superior to manual assessment three times daily using a portable manometer (routine care) in preventing VAP in patients with severe trauma?

Study Design And Methods: In this open-label, randomized controlled superiority trial conducted in 13 French ICUs, adults (age ≥ 18 years) with severe trauma (Injury Severity Score > 15) and requiring invasive mechanical ventilation for ≥ 48 h were enrolled. Patients were randomly assigned (1:1) via a secure Web-based random number generator in permuted blocks of variable sizes to one of two groups according to the method of tracheal cuff pressure control. Read More

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Watch Where You Point That: Pneumomediastinum From Pneumatic Nail Gun Injury to the Hand.

J Spec Oper Med 2021 ;21(1):106-108

Pneumatic nail guns are hand-held tools used in industrial and construction settings. Nail guns cause the most trauma with hospitalization among construction workers. To our knowledge, we report for the first time a case of pneumomediastinum from a nail gun injury to the hand. Read More

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Effects of Pneumatic Tube Transport on Blood Gas and Supplemental Analytes.

Respir Care 2021 Oct 9;66(10):1567-1571. Epub 2021 Mar 9.

Department of Internal Medicine, Section of Respiratory, Critical Care, Occupation (Pulmonary) Medicine, University of Utah Health Sciences, Salt Lake City, Utah.

Background: Pneumatic tube transport of blood gas samples is a common method of delivery within a facility. The effects of pneumatic tube transport on blood gas analysis has been studied. However, other analytes that are often assessed in blood gas analysis (eg, electrolytes, metabolites, and oximetry) are not typically included in these studies. Read More

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October 2021

Pneumatic tube transportation of urine samples.

Clin Chem Lab Med 2021 04 23;59(5):905-911. Epub 2020 Nov 23.

Department of Biochemistry and Immunology, Lillebaelt Hospital, University Hospital of Southern Denmark, Vejle, Denmark.

Objectives: Pneumatic tube transportation of samples is an effective way of reducing turn-around-time, but evidence of the effect of pneumatic tube transportation on urine samples is lacking. We thus wished to investigate the effect of pneumatic tube transportation on various components in urine, in order to determine if pneumatic tube transportation of these samples is feasible.

Methods: One-hundred fresh urine samples were collected in outpatient clinics and partitioned with one partition being carried by courier to the laboratory, while the other was sent by pneumatic tube system (Tempus600). Read More

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Pneumatic tube transport of blood samples affects global hemostasis and platelet function assays.

Int J Lab Hematol 2021 Oct 3;43(5):1207-1215. Epub 2021 Feb 3.

Faculty of Health, University College Copenhagen, Copenhagen, Denmark.

Introduction: Pneumatic tube systems (PTS) are frequently used for rapid and cost-effective transportation of blood samples to the clinical laboratory. The impact of PTS transport on platelet function measured by the Multiplate system and global hemostasis measured by the TEG 5000 was evaluated.

Methods: Paired samples from healthy adult individuals were obtained at two study sites: Rigshospitalet (RH) and Nordsjaellands Hospital (NOH). Read More

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October 2021

Evaluation of Newly Developed Easy-Open Assistive Devices for Pneumatic Tube System Carriers for the Reduction of Work-Related Musculoskeletal Disorders.

Biomed Res Int 2021 8;2021:8853602. Epub 2021 Jan 8.

Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan.

Musculoskeletal disorders may affect labor efficiency, cause disability, impair one's work ability, and lower one's quality of life. This consequently leads to a larger expenditure of medical resources. We aimed to design easy-to-open assistive devices for pneumatic tube systems to improve ergonomics and reduce musculoskeletal complaints of workers. Read More

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3D-printed tablets using a single-step hot-melt pneumatic process for poorly soluble drugs.

Int J Pharm 2021 Feb 22;595:120257. Epub 2021 Jan 22.

BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea. Electronic address:

Main purpose was to evaluate the applicability of a 3D-printer equipped with a hot-melt pneumatic dispenser as a single-step process to prepare tablet dosage forms. Dutasteride, a poorly water-soluble drug, was selected as a model drug. Soluplus®, Kollidon® VA 64, Eudragit® E PO, and hydroxypropyl cellulose (HPC) were premixed as bulking agents prior to printing. Read More

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February 2021

Pneumatic tube validation: Reducing the need for donor samples by integrating a vial-embedded data logger.

Ann Clin Biochem 2021 07 15;58(4):280-288. Epub 2021 Feb 15.

Department of Clinical Biochemistry, Bispebjerg, Frederiksberg University Hospital, Copenhagen, Denmark.

Background: The most common way to validate a pneumatic tube system is to compare pneumatic tube system-transported blood samples to blood samples carried by hand. The importance of measuring the forces inside the pneumatic tube system has also been emphasized. The aim of this study was to define a validation protocol using a mini data logger (VitalVial, Motryx Inc. Read More

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The effect of the interruption of agitation, temporary cooling, and pneumatic tube transportation on platelet quality during storage for transfusion.

Transfusion 2020 Dec 17. Epub 2020 Dec 17.

Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University, Frankfurt, Germany.

Background: Conditions during blood product storage and transportation should maintain quality. The aim of this in vitro study was to investigate the effect of interruption of agitation, temporary cooling (TC), and pneumatic tube system transportation (PTST) on the aggregation ability (AA) and mitochondrial function (MF) of platelet concentrates (PC).

Study Design And Methods: A PC was divided equally into four subunits and then allocated to four test groups. Read More

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December 2020

Preanalytical errors in emergency department samples: Investigating error sources.

J Med Biochem 2020 Oct;39(4):474-480

University of Málaga, Health Sciences School, Nursing and Podiatry Department, Málaga, Spain.

Background: The presence of preanalytical errors is a recurring fact in all areas of healthcare that send samples to laboratories. Increasing the knowledge of possible sources of error in the preanalytical phase has been the objective of this group during the last 10 years.

Methods: In this study, descriptive research has been carried out using professionals' opinions obtained by means of the Strengths, Weaknesses, Opportunities, and Threats method in a focus group. Read More

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October 2020

Speech Performance after Anterolateral Thigh Phonatory Tube Reconstruction for Total Laryngectomy.

Laryngoscope 2021 06 10;131(6):1349-1357. Epub 2020 Sep 10.

Department of Otolaryngology Head and Neck Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.

Objective: Traditionally, after total laryngopharyngectomy (TLP), patients cannot speak without a prosthesis or an artificial larynx. In Taiwan, most patients use a commercialized pneumatic laryngeal device (PLD). Phonatory tube reconstruction with the anterolateral thigh (ALT) flap is a novel, modified version of synchronous digestive and phonatory reconstruction involving a free muscular cutaneous flap. Read More

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Effect of Pneumatic Tube System Transport on Cell-Free DNA.

Clin Chem 2021 01;67(2):434-435

Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands.

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January 2021

Repetitive Blast Promotes Chronic Aversion to Neutral Cues Encountered in the Peri-Blast Environment.

J Neurotrauma 2021 04 16;38(7):940-948. Epub 2020 Dec 16.

Graduate Program in Neuroscience, University of Washington, Seattle, Washington, USA.

Repetitive mild traumatic brain injury (mTBI) has been called the "signature injury" of military service members in the Iraq and Afghanistan wars and is highly comorbid with post-traumatic stress disorder (PTSD). Correct attribution of adverse blast-induced mTBI and/or PTSD remains challenging. Pre-clinical research using animal models can provide important insight into the mechanisms by which blast produces injury and dysfunction-but only to the degree by which such models reflect the human experience. Read More

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Falsely decreased FVIII activity following pneumatic tube transport.

Int J Lab Hematol 2021 Apr 15;43(2):305-310. Epub 2020 Oct 15.

Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.

Introduction: The pneumatic tube system (PTS) is widely used for sample delivery. We aimed to investigate the impacts of PTS on hemostasis assays.

Methods: Triplicate samples from 30 healthy volunteers were delivered to the core laboratory manually by human courier or via the 500 m long-distance PTS or via the 1000 m long-distance PTS. Read More

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Microfluidic platform for integrated compartmentalization of single zoospores, germination and measurement of protrusive force generated by germ tubes.

Lab Chip 2020 11;20(22):4141-4151

Biomolecular Interaction Centre, Department of Electrical and Computer Engineering, University of Canterbury, New Zealand. and The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand.

This paper describes the design, fabrication and characterisation of a novel monolithic lab-on-a-chip (LOC) platform combining the trapping and germination of individual zoospores of the oomycete Achlya bisexualis with elastomeric micropillar-based protrusive force sensing. The oomycetes are of significant interest due to their pathogenic capabilities, which can have profound ecological and economic impacts. Zoospore encystment and germination via a germ tube play a key role in their pathogenicity. Read More

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November 2020

Suction-fixing surgical device for assisting liver manipulation with laparoscopic forceps.

Int J Comput Assist Radiol Surg 2020 Oct 30;15(10):1653-1664. Epub 2020 Jul 30.

Department of Advanced Surgical Technology, Tokyo Medical and Dental University, Tokyo, Japan.

Purpose: Noninvasiveness and stability are significant issues in laparoscopic liver resection. Inappropriate grasping force can cause damage or serious bleeding to the liver. In addition, instability of grasping can result unsafe operations or wavered cutting. Read More

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October 2020

The Modern Pneumatic Tube System Transports with Reduced Speed Does Not Affect Special Coagulation Tests.

J Med Syst 2020 Jul 21;44(9):142. Epub 2020 Jul 21.

Department of Blood Transfusion, University Hospital Olomouc, Olomouc, Czech Republic.

Pneumatic tube transport systems (PTS) for delivery of patient samples to a hemostasis laboratory are often used to reduce turnaround time for vital analyses. PTS in our hospital has the ability to regulate the transport speed in the range of 3-6 m/s with acceleration control technology. We evaluated the effects of PTS transport for routine coagulation tests, platelet function tests and special global coagulation tests. Read More

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