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Phlebotomy is the process of making a puncture in a vein, usually in the arm, with a cannula for the purpose of drawing blood. [1] The procedure itself is known as a venipuncture , which is also used for intravenous therapy .
The original test proposed by Allen is performed as follows: [1] The patient is asked to clench both fists tightly for 1 minute at the same time. Pressure is applied over the radial and ulnar arteries simultaneously so as to occlude them. The patient then opens the fingers of both hands rapidly, and the examiner compares the colour of both.
In medicine, venipuncture or venepuncture is the process of obtaining intravenous access for the purpose of venous blood sampling (also called phlebotomy) or intravenous therapy. In healthcare, this procedure is performed by medical laboratory scientists , medical practitioners , some EMTs , paramedics , phlebotomists , dialysis technicians ...
ISBN 978-1-4128-0467-7. Carter, K. Codell (2012). The Decline of Therapeutic Bloodletting and the Collapse of Traditional Medicine. New Brunswick & London: Transaction Publishers. ISBN 978-1-4128-4604-2. Kang, Lydia; Nate Pederson (2017). Quackery: A Brief History of the Worst Ways to Cure Everything. Workman Publishing Company. [ISBN missing]
International relations China–United States relations Donald Trump, the President of the United States, agrees to continue the One China Policy after a discussion with Chinese President Xi Jinping. (Washington Post) Russia–United States relations When Russian President Vladimir Putin, during the January telephone conversation with President Donald Trump, raised the possibility of extending ...
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Bleeding time may be affected by platelet function, certain vascular disorders and von Willebrand Disease—not by other coagulation factors such as haemophilia.Diseases that may cause prolonged bleeding time include thrombocytopenia, disseminated intravascular coagulation (DIC), Bernard-Soulier disease, and Glanzmann's thrombasthenia.
Venography (also called phlebography or ascending phlebography) is a procedure in which an X-ray of the veins, a venogram, is taken after a special dye is injected into the bone marrow or veins.