scholarly journals Pneumatic tube system transport does not alter platelet function in optical and whole blood aggregometry, prothrombin time, activated partial thromboplastin time, platelet count and fibrinogen in patients on anti-platelet drug therapy

2017 ◽  
pp. 217-224 ◽  
Author(s):  
Dietmar Enko ◽  
Harald Mangge ◽  
Andreas Münch ◽  
Tobias Niedrist ◽  
Elisabeth Mahla ◽  
...  
Keyword(s):  
Platelet Count ◽  
Drug Therapy ◽  
Prothrombin Time ◽  
Whole Blood ◽  
Partial Thromboplastin Time ◽  
Activated Partial Thromboplastin Time ◽  
Tube System ◽  
Anti Platelet Drug ◽  
Whole Blood Aggregometry ◽  
Pneumatic Tube System

Effects of a Pneumatic Tube System on Routine and Novel Hematology and Coagulation Parameters in Healthy Volunteers

2007 ◽  
Vol 131 (2) ◽  
pp. 293-296
Author(s):  
Alexander Kratz ◽  
Raneem O. Salem ◽  
Elizabeth M. Van Cott
Keyword(s):  
Healthy Volunteers ◽  
Prothrombin Time ◽  
Partial Thromboplastin Time ◽  
Activated Partial Thromboplastin Time ◽  
Tube System ◽  
Blood Samples ◽  
Pneumatic Tube ◽  
The Mean ◽  
Clinically Significant ◽  
Pneumatic Tube System

Abstract Context.—Technologic advances affecting analyzers used in clinical laboratories have changed the methods used to obtain many laboratory measurements, and many novel parameters are now available. The effects of specimen transport through a pneumatic tube system on laboratory results obtained with such modern instruments are unclear. Objective.—To determine the effects of sample transport through a pneumatic tube system on routine and novel hematology and coagulation parameters obtained on state-of-the-art analyzers. Design.—Paired blood samples from 33 healthy volunteers were either hand delivered to the clinical laboratory or transported through a pneumatic tube system. Results.—No statistically significant differences were observed for routine complete blood cell count and white cell differential parameters or markers of platelet activation, such as the mean platelet component, or of red cell fragmentation. When 2 donors who reported aspirin intake were excluded from the analysis, there was a statistically, but not clinically, significant impact of transport through the pneumatic tube system on the mean platelet component. There were no statistically significant differences for prothrombin time, activated partial thromboplastin time, waveform slopes for prothrombin time or activated partial thromboplastin time, fibrinogen, or fibrin monomers. Conclusions.—Although further study regarding the mean platelet component may be required, transport through a pneumatic tube system has no clinically significant effect on hematology and coagulation results obtained with certain modern instruments in blood samples from healthy volunteers.

Can RoTEM®analysis be applied for haemostatic monitoring in paediatric congenital heart surgery?

2011 ◽  
Vol 21 (6) ◽  
pp. 684-691 ◽  
Author(s):  
Jo Bønding Andreasen ◽  
Anne-Mette Hvas ◽  
Kirsten Christiansen ◽  
Hanne Berg Ravn
Keyword(s):  
Cardiac Surgery ◽  
Platelet Count ◽  
Prothrombin Time ◽  
Partial Thromboplastin Time ◽  
Congenital Heart ◽  
Heart Surgery ◽  
Congenital Heart Surgery ◽  
Activated Partial Thromboplastin Time ◽  
Clotting Time ◽  
Coagulation Tests

AbstractBackgroundSuccessful management of bleeding disorders after congenital heart surgery requires detection of specific coagulation disturbances. Whole-blood rotation thromboelastometry (RoTEM®) provides continuous qualitative haemostatic profiles, and the technique has shown promising results in adult cardiac surgery.SettingTo compare the performance of RoTEM®with that of conventional coagulation tests in children, we conducted a descriptive study in children undergoing congenital cardiac surgery. For that purpose, 60 children were enrolled and had blood samples taken before, immediately after, and 1 day after surgery. Conventional coagulation tests included: activated partial thromboplastin time, prothrombin time, fibrinogen, fibrin D-dimer, thrombin clotting time, factor XIII, and platelet count.ResultsPost-surgical haemostatic impairment was present to some degree in all children, as seen by pronounced changes in activated partial thromboplastin time, prothrombin time, thrombin clotting time, and platelet count, as well as RoTEM®analysis. RoTEM®showed marked changes in clotting time – prolonged by 7–18% – clot formation time – prolonged by 46–71% – maximum clot firmness – reduced by 10–19%, and maximum velocity – reduced by 29–39%. Comparison of the two techniques showed that conventional coagulation tests and RoTEM®performed equally well with regard to negative predictive values for excessive post-operative drain production – more than 20 millilitres per kilogram per 24 hours after surgery – with an area under the curve of approximately 0.65.ConclusionRoTEM®can detect haemostatic impairments in children undergoing cardiac surgery and the method should be considered as a supplement in the perioperative care of the children where targeted transfusion therapy is necessary to avoid volume overload.

Thromboelastography - Viscoelastic Haemostatic Assay (VHA) Versus Routine Plasma Based Coagulation Parameters in Trauma Patients to Detect Coagulopathy within 24 Hrs After Injury

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 5248-5248
Author(s):  
Bhaumik Arvindkumar Shah ◽  
Arulselvi Subramanium ◽  
Subhadra Sharma ◽  
Deepak Agrawal ◽  
Gaurav Chhabra ◽  
...  
Keyword(s):  
Head Injury ◽  
Prothrombin Time ◽  
Whole Blood ◽  
Partial Thromboplastin Time ◽  
Activated Partial Thromboplastin Time ◽  
Trauma Patients ◽  
Thrombin Time ◽  
Coagulation Parameters ◽  
Conventional Methods ◽  
D Dimer

Abstract Abstract 5248 In India trauma related deaths occur every 1.9 minutes. Mortality in severe traumatic injury (ISS>16) is six times higher in developing country like India. Coagulopathy is observed in almost 25– 30% of trauma patients which itself is an independent risk factor for haemorrhage. Coagulopathy detected early after injury is indicative of injury severity and itself is a prognostic factor for mortality. Aim To find out the usefulness of thromboelastography (TEG) in detecting coagulopathy in contrast to conventional methods of plasma based standard coagulation parameters (PT, aPTT, TT, fibrinogen, D-dimer) Objective To detect coagulopathy early by TEG in trauma patients within 24 hrs after injury which can be useful to guide haemostatic therapies to reduce mortality. Materials and methods Patients admitted to trauma casualty were studied within 24 hrs after injury. Native whole blood was withdrawn through venepuncture appropriately in syringe using 21G needle and TEG was performed within 2 mins. Blood was also collected in citrated tube to assess standard coagulation parameters (prothrombin time, activated partial thromboplastin time, thrombin time, fibrinogen, D-dimer) and also by means of thromboelastography. Results Patients (n=87,New ISS-24.78(mean)) admitted to J.P.N Apex trauma centre casualty from 1st April,2011 to 31st July,2011 were studied. The cases included in the study were isolated head injury (n=40, NISS-25.87(mean)), multiple trauma with head injury (n=13,NISS – 30.69 (mean)) and trauma other than head injury (n=34, NISS-21.24 (mean)).Thromboelastography was performed using whole blood (n=69) and citrated blood (n=18). Coagulation tests were performed on all 87 patients using both TEG and conventional coagulation parameters. Total 52 patients showed coagulopathy by TEG and only 14 patients showed coagulopathy by standard coagulation parameters (prothrombin time, activated partial thromboplastin time). Only in 10 cases coagulopathy was detected by both methods. 4 patients showed coagulopathy only by conventional methods while 42 patients showed coagulopathy by only Thromboelastography (TEG). To find out whether there is any stastistical significance in the observed apparently better result by TEG, McNemar Test was carried out and P value was <0.0001. Conclusion Thromboelastography could be a better technique as compared to conventional measurements of PT, aPTT, TT, Fibrinogen, D-dimer in early detection of coagulopathy in trauma patients. Disclosures: No relevant conflicts of interest to declare.

Evaluation of bone marrow with particular consideration of the megakaryocyte lineage and coagulation profile in the pregnant fallow deer (Dama dama)

2016 ◽  
Vol 19 (2) ◽  
pp. 359-364
Author(s):  
A. Snarska ◽  
P. Sobiech
Keyword(s):  
Bone Marrow ◽  
Platelet Count ◽  
Prothrombin Time ◽  
Partial Thromboplastin Time ◽  
Fallow Deer ◽  
Activated Partial Thromboplastin Time ◽  
Control Group ◽  
Slight Reduction ◽  
Thrombin Time ◽  
Coagulation Parameters

Abstract The aim of the study was to evaluate the megakaryocyte lineage of bone marrow and coagulation parameters in fallow deer during the last month of pregnancy. The animals were managed in the barn-feeding system. Twenty female fallow deer, aged 2-3 years, divided into 2 groups were used in the study. Group 1 comprised the females in the last month of pregnancy, and the non-pregnant females were used as the control. All the animals were clinically healthy. Coagulation parameters were measured in all the deer: thrombin time (TT), prothrombin time (PT), activated partial thromboplastin time (APTT), and plasma concentrations of fibrinogen, D-dimer, and antithrombin III. A quantitative assessment of bone marrow was carried out for the erythroblastic, myeloid, lymphoid, monocyte-macrophage, and megakaryopoietic cell lines. A detailed analysis of megakaryocyte lineage was performed after whole blood and platelet count. There were no significant differences in the erythroblast, granulocyte, monocyte-macrophage and lymphoid systems between the animal groups. Thrombocyte count in the pregnant deer was lower than that found in the control group. Bone marrow smears revealed a slightly decreased megakaryocyte count, while the megakaryoblast and promegakaryocyte counts were unchanged. The analysis of coagulation parameters showed increased levels of fibrinogen, thrombin time, prothrombin time and activated partial thromboplastin time in the pregnant animals. The study suggested a hyperactivation of the coagulation system with a slight reduction in the megakaryocyte count in bone marrow, and a reduction in platelet count in peripheral blood at the end of pregnancy.

Value of Preoperative Hemostasis Testing in Patients with Liver Disease for Perioperative Hemostatic Management

2017 ◽  
Vol 126 (2) ◽  
pp. 338-344 ◽  
Author(s):  
Ton Lisman ◽  
Robert J. Porte
Keyword(s):  
Platelet Count ◽  
Liver Disease ◽  
Prothrombin Time ◽  
Partial Thromboplastin Time ◽  
Blood Product ◽  
Fibrinogen Level ◽  
Activated Partial Thromboplastin Time

Preoperative hemostasis testing may have limited use in patients with liver disease, and an abnormal platelet count, prothrombin time, activated partial thromboplastin time, and fibrinogen level should not trigger prophylactic transfusion of blood product components.

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