Bone marrow sampling
Bone marrow sampling is often essential in diagnosing haematological
conditions. There are two sampling techniques available:
·
Bone marrow aspiration: Sampling
normally occurs from the iliac crest. Following skin preparation local
anaesthetic is infiltrated into the skin and down to the periosteum. The
aspiration needle is inserted through the skin and advanced rotating clockwise
and counterclockwise until the marrow cavity is entered. The stylet is then
removed and 2–3 mL of marrow is aspirated using a syringe. The sample is spread
onto glass slides and stained as required.
·
Bone marrow trephine: Following
skin preparation, anaesthetic and incision the biopsy needle (e.g. Jamshidi
needle) is inserted and advanced until it makes contact with the bone. The
stylet is then removed and the needle advanced using alternating
clockwise-counterclockwise motion into the bone marrow cavity. The sample is
removed from the needle, fixed, decalcified and stained as required.
Related Topics
Privacy Policy, Terms and Conditions, DMCA Policy and Compliant
Copyright © 2018-2026 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.