Wilderness and Survival Medicine by Chris Breen Ellis & Dr Craig

Author:Chris Breen Ellis & Dr Craig [Ellis, Chris Breen]
Language: eng
Format: azw3, mobi
Publisher: null
Published: 2011-12-07T00:00:00+00:00

The blood is examined by making a thin film on a microscope slide. The goal is to take one drop of blood and have a film so thin that there is only one layer of cells in which to observe. The thin blood film is then stained to enhance the visibility of the components.

1. Take blood from the third of forth finger. Do no use the ear, an infected finger, the index finger or thumb. Strike with a sterile lancet and then let the blood flow freely. Collect a drop of blood 4 mm in diameter by touching it lightly to one side of the perfectly clean microscope slide. Take first samples for erythocyte and leukocyte analysis. You must make the film within 1-2 hours of collection. If not you need to preserve the blood in 10% solution of EDTA dipotassium salt. Do not use other anticoagulants (e.g.

heparin) or it will alter how the leukocytes and thrombocytes look under the microscope.

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