| MRBC | monkey red blood cell; mouse red blood cell |
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| PaO2 | partial oxygen tension in arterial blood; partial pressure of oxygen in arterial blood |
| PBF | peripheral blod flow; placental blood flow; pulmonary blood flow |
| PBL | peripheral blood leukocyte; peripheral blood lymphocyte; problem-based learning |
| PBV | predicted blood volume; pulmonary blood volume |
| blood motes | Small refractive particles in the circulating blood, probably lipid material associated with fragmented stroma from red blood cells. Synonym: blood dust, blood motes, dust corpuscles. Origin: haemo-+ G. Konis, dust (05 Mar 2000) |
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| blood patch, epidural | The injection of autologous blood into the epidural space either as a prophylactic treatment immediately following an epidural puncture or for treatment of headache as a result of an epidural puncture. (12 Dec 1998) |
| blood pH | PH of arterial blood; normal is 7.4 (normal range 7.36-7.44). (05 Mar 2000) |
| blood physiology | Observable characteristics of blood activities and functions, such as blood groups, coagulation processes, etc. (12 Dec 1998) |
| blood plastid | Any basic, morphologic unit in the biologic composition of blood, e.g., an erythrocyte. (05 Mar 2000) |
| blood platelets | Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation. (12 Dec 1998) |
| blood poisoning | See: septicaemia, pyaemia. (05 Mar 2000) |
| blood pool imaging | Nuclear medicine study using a radionuclide that is confined to the vascular compartment. (05 Mar 2000) |
| blood porphyrin level | A test which is used to measure red blood cell porphyrin levels. Porphyrins are pigments found in both animal and plant life. This test is useful in evaluating any number of porphyrin disorders (involving the various porphyrins) of red blood cells. Increased levels of coproporphyrins can indicate congenital erythropoietic porphyria or sideroblastic anaemia. Increased protoporphyrins may be seen in infection, thalassaemia, sideroblastic anaemia, iron deficient anaemia, increased erythropoiesis and lead poisoning. Increased uroporphyrins may indicate congenital erythropoietic porphyria or erythropoietic protoporphyria. (27 Sep 1997) |
| blood pressure | <cardiology, physiology> The force that the circulating blood exerts on the walls of the arteries. This measurement is divided into systolic (pressure during contraction of the heart) and diastolic (pressure during relaxation phase). Blood pressure varies with age and sex of the individual. A rough rule of thumb for normal systolic pressure is 100 + Age of individual. In children 2 x (age) + 80 = systolic BP The diastolic pressure should be roughly 2/3 the systolic pressure. (27 Sep 1997) |
| blood pressure determination | Techniques for measuring blood pressure. (12 Dec 1998) |
| blood pressure, high | High blood pressure (hypertension) is a repeatedly elevated blood pressure exceeding 140 over 90 mmHg. High blood pressure is also called the silent killer. Chronically high blood pressure can cause blood vessel changes in the back of the eye (retina), thickening of the heart muscle, kidney failure, and brain damage. No specific cause for high blood pressure is found in 95% of patients. High blood pressure is treated with salt restriction, regular aerobic exercise, and medications. (12 Dec 1998) |
| blood pressure monitoring, ambulatory | Method in which prolonged blood pressure readings are made while the patient undergoes normal daily activities. It allows quantitative analysis of the high blood pressure load over time, can help distinguish between types of hypertension, and can assess the effectiveness of antihypertensive therapy. (12 Dec 1998) |
| blood pressure monitors | Devices for continuously measuring and displaying the arterial blood pressure. (12 Dec 1998) |
| blood products | Biopharmaceutical products purified from human blood, such as the blood clotting factor VIII used to treat haemophiliacs. (Recombinant factor VIII is also on the market.) The term also refers to biopharmaceuticals that act on blood or the cells that make blood. These products are often produced by the cells themselves, but in such tiny amounts that extracting them from blood is impractical, and so they are genetically engineered. (14 Nov 1997) |