Joseph D. McCracken, MD
- internal medicine
Location and Office HoursCancer Care Center of Texas
1200 Brooklyn Ave Ste 200
San Antonio, TX 78212
- BlueCross BlueShield
- BlueCross BlueShield of Texas
- Community First Health Plans
- First Health
- Great-West Healthcare Cigna
- United Healthcare
- Baptist Medical Center
- Christus Santa Rosa City Centre & Children's Hospital
- Metropolitan Methodist Hospital
- Nix Medical Center
- Nix Specialty Health Center
- South Texas Regional Medical Center
- Southwest General Hospital
- St Luke's Baptist Hospital
Why do I need an MRI scan if I have an AVM in the brain?
A magnetic resonance imaging (MRI) scan is a typical diagnostic test done for an arteriovenous malformation (AVM) in the brain. This is almost like a 3D x-ray picture of the brain. It allows doctors to plan very precisely where they need to enter the brain, how they need to deal with the blood vessels and how the AVM can be removed completely.
What tests are administered to ensure safe blood is given to patients?
American Red Cross answeredAfter blood is donated, it is tested in a laboratory to ensure it is safe for transfusions. Tests currently performed (as of July 2010 ) include:
- Each unit of blood is tested for the following: ABO and Rh blood groups.
- Unexpected red blood cell antibodies that are a result of prior transfusion, pregnancy or other factors.
- Hepatitis B surface antigen, indicating a current infection (hepatitis) or carrier state for hepatitis B virus.
- Antibody to hepatitis B core antigen, indicator of a present or past infection with the hepatitis B virus.
- Antibody to hepatitis C virus, indicating a current or past infection with hepatitis C virus (most common cause of non-A/non-B hepatitis).
- Antibody to HTLV-I/II, indicator of infection with a virus that may cause adult T-cell leukemia or neurological disease.
- Antibody to HIV-1/2, indicator of infection with human immunodeficiency virus (HIV).
- Nucleic Acid Test (NAT) for hepatitis C (HCV) and HIV.
- Screening test for antibodies to syphilis.
- NAT for West Nile Virus (WNV).
- Enzyme-linked immunoassay (ELISA) test for Trypanosoma cruzi (Chagas Disease).
How is sickle-hemoglobin C (Hb S-C) disease like other illnesses?
Piedmont Heart Institute answered
Because the child inherits a defective gene designating sickle cell anemia and another designating hemoglobin C disease from each parent, sickle-hemoglobin C (Hb S-C) disease is very similar to sickle cell anemia. The symptoms and treatments of the disorders are the same. However, sickle-hemoglobin C symptoms are usually less severe than sickle cell anemia symptoms. This means that treatments, which are designed to neutralize symptoms and prevent complications, are also different, depending on the sufferer's symptoms.
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