Bone Marrow Aspiration and Biopsy Technique | 合法醫療器材資訊網

2021年6月8日—A10-mLsyringewitha25-gaugeneedleisusedtoinjectaninitial0.5mLdirectlyundertheskin,raisingawheal.A22-gaugeneedleisusedto ...

Aspiration sampling is generally performed before marrow biopsy of the posterior or anterior iliac crest. The reason is that the biopsy technique induces elevated thromboplastic substances, and this leads to a reduction in the effectiveness of an aspiration sampling. [3, 18, 19]

With the patient positioned as previously described (see Patient Preparation[1]), the iliac crest is palpated and the preferred sampling site marked with a pen. If the patient is obese, it is helpful to ask him or her to place a hand on the hip so as to facilitate identification of the pelvic rim. It is not uncommon for the lateral sacral crest to be mistaken for the posterior superior iliac crest, an error that will lead to a painful procedure and a dry tap.

Aseptic technique is employed, including sterile gloves. The site is prepared with an antiseptic (eg, povidone-iodine or chlorhe...