Blood is extremely dangerous when carried to the blood via the lungs by inhalation, because carbon monoxide irreversibly binds to hemoglobin to form carboxyhemoglobin, so that less hemoglobin is free to bind oxygen, and fewer oxygen molecules can be transported throughout the blood. This can cause suffocation insidiously. A fire burning in an enclosed room with poor ventilation presents a very dangerous hazard, since it can create a build-up of carbon monoxide in the air. Some carbon monoxide binds to hemoglobin when smoking tobacco. Blood for transfusion is obtained from human donors by blood donation and stored in a blood bank.
Hemoglobin D-Punjab have increased risk of having Hemoglobin D Disease, Hemoglobin SD disease or Beta-thalassemia Disease. Even homozygous Hemoglobin D disease does not typically cause clinically significant symptoms. Occasionally it can cause mild haemolytic anaemia and mild splenomegaly. The anemia usually occurs in the first few months of life, as fetal hemoglobin decreases and hemoglobin D increases. Hb D-Punjab becomes significant when it is co-inherited with Hb S or B thalassemia. 1. Tyagi S, Marwaha N, Parmar V, Basu S. Sickle cell hemoglobin-D Punjab disease (Compound Heterozygous state). Ind J Hematol Blood Transf 2000;18:31-2. 2. 3. http://www.idph.state.il.us/HealthWellness/fs/hemoglobin_d.htm 4. http://health.utah.gov/newbornscreening/Disorders/HB/Hb_D_Disease_DD/FactSheet_Provider_HbDD_En.pdf 5. www.chime.ucl.ac.uk/APoGI/data/rtf/hb/carriers/b/dp/carbook.rtf Hemoglobin