Anesthetic Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Anesthetic and links to relevant pages within the course.
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| Collection of the Aspirate The marrow aspiration is usually performed before a biopsy is done. A syringe is attached to the needle, the plunger is pulled and 1.0-1.5 ml. of marrow particles and blood from marrow sinuses is withdrawn. If additional bone marrow samples are needed, a separate syringe must be used each time. If more than 2 cc. per syringe is taken out, the blood to marrow ratio will be too high and the preparations will not accurately reflect the marrow contents. As the marrow is aspirated into the syringe the patient will feel some pain and pressure even though local anesthetic has been administered. | View Page |
| Prepare the Patient The physician ordering the bone marrow is responsible for providing information about the procedure to the patient or parent or guardian, if the patient is a child. In order to reduce the patient's anxiety about the procedure, the physician may prescribe a mild sedative to be administered about an hour before the bone marrow is scheduled. The site is aseptically prepared by shaving, if necessary, washing with soap and water, applying antiseptic and draping the area with sterile towels. A local anesthetic, such as 2% xylocaine, is injected into the bone, penetrating the covering of the bone called the periosteum. Since a number of nerve endings are located near the surface of the bone, it is important to be sure that this area is anesthetized.
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