BUN {Ans: Blood urea nitrogen Urea produced in the liver as a by product of protein metabolism BUN levels are elevated with increased protein intake, GI bleeding, dehydration BUN-creatinine ratio is abnormal in liver disease. Elevated BUN is a sign of dehydration and kidney disease.}Romberg test {Ans: test for inability to maintain body balance when eyes are closed and feet are together, indication of spinal cord disease}Leukemia {Ans: malignant disease characterized by excessive increase in abnormal white blood cells formed in the bone marrow}intravenous pyelogram {Ans: diagnostic radiographic study of the kidneys and ureters with the use of a contrast medium that is administered intravenously}Aplastic anemia {Ans: severe type, occurs when bone marrow fails to produce not only erythrocytes but leukocytes and thrombrocytes as well}myasthenia gravis {Ans: autoimmune disorder that affects the neuromuscular junction, causing a progressive decrease in muscle strength; activity resumes and strength returns after a period of rest. Affects the acetylcholine receptors that primarily affects the face and throat, at risk for aspiration.}Normal ranges for ABG {Ans: PH: 7.35-7.45 PaO2:80-100 mm Hg PaCO2: 35-45 mm Hg HCO3: 22-26 mEq/L SaO2: 95-100%}pneumonia {Ans: respiratory disease characterized by inflammation of the