The role of PFA‐100® testing in the investigation and management of haemostatic defects in children and adults

@article{Harrison2005TheRO,
  title={The role of PFA‐100{\textregistered} testing in the investigation and management of haemostatic defects in children and adults},
  author={Paul J. Harrison},
  journal={British Journal of Haematology},
  year={2005},
  volume={130}
}
The PFA‐100® provides a simple global measure of high shear‐dependent platelet function, and as such is not diagnostic or specific to any disorder. Prolonged closure times must be interpreted in conjunction with a full blood count, von Willebrand factor (VWF) screen and other platelet tests. The PFA‐100® may also give false negative results with relatively common platelet defects. If clinical suspicion is high, further detailed platelet function testing and VWF screening are required to exclude… 
Platelet function analyzer (PFA)‐100® closure time in the evaluation of platelet disorders and platelet function
TLDR
The PFA‐100 closure time should be considered optional in the evaluation of platelet disorders and function, and its use in therapeutic monitoring of Platelet function is currently best restricted to research studies and prospective clinical trials.
Utility of the PFA-100 as a screening test of platelet function: an audit of haemostasis laboratories in Australia and New Zealand
TLDR
An audit of usage among participants of the Royal College of Pathologists of Australasia Quality Assurance Program reports a wide variety of laboratory usage among these users, including numbers of tests performed, sources of requests, testing criteria and follow-up action.
Comparison Between Bleeding Time and PFA-200 to Evaluate Platelet Function Disorder in Children.
TLDR
The performance of the PFA-200 is compared with the BT for the detection of combined platelet and vWF abnormalities and there are practical advantages of P FA-200 over BT.
Current status and future prospects for platelet function testing in the diagnosis of inherited bleeding disorders
  • N. Dovlatova
  • Medicine, Biology
    British journal of haematology
  • 2015
TLDR
The established platelet function tests used for diagnosing inherited platelet abnormalities in adults and children are summarized, the newly developed methodologies as well as unmet challenges and potential areas for further improvement in this field are discussed.
Evaluation of platelet function in horses undergoing colic surgery using the PFA-100 platelet function analyser.
TLDR
The aim of the present study was to investigate platelet function in a group of horses suffering ascending colon displacement and who underwent surgery and to conclude that the PFA-100 ® can be used to detect platelets function defects in horses.
Evaluation of platelet function using PFA-100® in patients treated with Acetylsalicylic acid and qualified for Trauma and Orthopedic surgery procedures
TLDR
Normal PLT function assessed using PFA-100® is a common phenomenon in patients with long-term ASA treatment and who are qualified for trauma and orthopedic surgery procedures, although in many cases, it seems that inadequate response to ASA is only a laboratory phenomenon.
Platelet function assays in diagnosis: an update
TLDR
The goals of platelet function testing are to provide a rapid and precise diagnosis to every patient bleeding due to a platelet disorder, to assess the individual bleeding risk and potentially to monitor the efficacy of prohemostatic interventions.
Tests of platelet function
  • U. Shah, A. Ma
  • Medicine, Biology
    Current opinion in hematology
  • 2007
TLDR
Platelet function is complex and may be disrupted at any of a number of steps, including adhesion, aggregation, shape change and secretion, as well as the clinical scenarios in which they are likely to be useful.
The Platelet Function Analyzer (PFA-100) as a Screening Tool in Neurosurgery
TLDR
Preoperative screening with the PFA-100 did result in a significant increase in the administration of desmopressin, which could not reduce perioperative bleeding complications or transfusions.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 73 REFERENCES
Utility of the PFA‐100® for assessing bleeding disorders and monitoring therapy: a review of analytical variables, benefits and limitations
  • E. Favaloro
  • Medicine
    Haemophilia : the official journal of the World Federation of Hemophilia
  • 2001
TLDR
The PFA‐100® can be considered a worthwhile addition to any haemostasis laboratory involved in the diagnosis or therapeutic‐monitoring of bleeding disorders including vWD and platelet‐dysfunctions, as well as reviewing analytical variables that may complicate the interpretation of results.
The PFA-100: a potential rapid screening tool for the assessment of platelet dysfunction.
TLDR
The PFA-100 proved to be sensitive in detecting classical defects by giving prolonged closure times in samples from patients with major platelet function defects (e.g. von Willebrand's disease, Glanzmann's thrombasthenia and Bernard Soulier syndrome).
The Platelet Function Analyzer (PFA‐100®): a novel in‐vitro system for evaluation of primary haemostasis in children
TLDR
The PFA‐100 system was found to be potentially useful in screening for von Willebrand disease in children and normal ranges for CTs in healthy children, adults and neonates were established.
Use of the PFA-100 in the assessment of primary, platelet-related hemostasis in a pediatric setting.
TLDR
Preliminary results indicate that the PFA-100 will be useful in the evaluation of primary hemostasis in children, as well as in adults, and reproducibility between duplicate samples is excellent.
Comparison of PFA-100 and Bleeding Time Testing in Pediatric Patients With Suspected Hemorrhagic Problems
TLDR
The PFA-100 is a more efficient test; it can replace the bleeding time test as a component of the laboratory evaluation of children with a potential bleeding problem.
Are the bleeding time and PFA‐100® useful in the initial screening of patients with mucocutaneous bleedings of hereditary nature?
  • M. Cattaneo
  • Medicine
    Journal of thrombosis and haemostasis : JTH
  • 2004
TLDR
PT and APTT are indeed very effective in helping the diagnosis of patients with abnormalities of the coagulation system, but BT is questionable, not only because its sensitivity seems unacceptably low, but also because it is of no help in differentiating among the various types of defects of primary hemostasis.
Standardization of the PFA‐100® platelet function test in 105 mmol/l buffered citrate: effect of gender, smoking, and oral contraceptives
TLDR
The PFA‐100® (PFA) diagnostic system for the detection of platelet dysfunction was evaluated to determine reference ranges in a normal population and the effect of gender, smoking, and use of oral contraceptives on reference ranges was assessed.
Can the Platelet Function Analyzer (PFA)-100 test substitute for the template bleeding time in routine clinical practice?
TLDR
The PFA-100 was more sensitive to aspirin-induced platelet dysfunction and was more rapidly and cheaply performed than the BT, and it is concluded that this test could replace the BT as a first-line screening test for platelets dysfunction in clinical practice.
Template bleeding time and PFA‐100® have low sensitivity to screen patients with hereditary mucocutaneous hemorrhages: comparative study in 148 patients
TLDR
Both tests were relatively insensitive and not significantly different in detecting incoming patients with mucocutaneous hemorrhages and in patients with VWD‐1, the PFA‐100® performed slightly better, whereas the opposite occurred in those patients with platelet secretion defects.
Performance of the platelet function analyser PFA-100 in testing abnormalities of primary haemostasis.
  • P. Harrison, M. Robinson, +6 authors S. Machin
  • Medicine, Biology
    Blood coagulation & fibrinolysis : an international journal in haemostasis and thrombosis
  • 1999
TLDR
There was no evidence of enhanced platelet function in patients with antiphospholipid syndrome, in sickle-cell disease or thalassemia, and ingestion of aspirin resulted in a near consistent and significant prolongation of the closure time for the epinephrine cartridge but not for the ADP cartridge in both normal subjects and patients.
...
1
2
3
4
5
...