DIAG 2735 Exam 3 Review #1

DIAG 2735 Exam 3 - Test 3 Study Material Blood Chemistry Testing PH measures the blood hydrogen ion concentration PaO2-is the partial pressure of

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Unformatted text preview: Test 3 Study Material Blood Chemistry Testing: PH- measures the blood hydrogen ion concentration PaO2-is the partial pressure of Ox in blood-measures the ability of lungs to oxygenate blood-higher in arterial blood SaO2-oxygen saturation level of the blood HCO3--bicarbonate ion crucial in maintenance of blood PH-regulated by the Kidneys O2CT-actual amount of oxygen in blood Abnormal Values: 1) LOW PaO2 w/ low O2CT w/ low SaO2 & HIGH PaCO2 -indicates not getting enough O2 into the lungs-Causes: muscle weakness, airway obstruction, respiratory center inhibition 2) Normal PaCO2 w/ Decreased PaO2, O2CT, SaO2- indicates insufficient oxygenation of the blood- Causes:-Pneumothorax-Internal fibrosis-AV shunt-Ductus Arteriosus-Septal Defect 3) Normal PaO2, SaO2, PaCO2 w/ LOW O2CT-indicates severe Anemia (Decreased blood volume, reduced ability of cells to carry O2) Total Carbon Dioxide- end product of metabolism-venous blood-C02 flowing out of RBC dissolves in plasma as Carbonic Acid-Most of CO2 in plasma is in bicarbonate form Sodium-major extracellular cation-maintains osmotic pressure & acid-base balance-regulates K+ & Cl- levels ***Decrease Na+ levels = more water lost ***Increase Na+ levels = more water absorbed TOO MUCH Na+ = Hypernatremia Causes:-Dehydration-Diabetes Insipidous-Kidney failure-Vomiting or Diarrhea-primary aldosteronism TOO LOW Na+ = Hyponatremia Causes:-inadequate intake-Vomiting or Diarrhea-adrenal insufficiency-chronic kidney disease-burns Potassium -major Intracellular cation Magnesium - enzyme activation to make nucleic acids & proteins-influences PTH levels & Ca+ Phosphates-used to store & utilize energy Calcium-in blood 40% is ionized & 50% is bound Chloride-works w/ Sodium Anion Gap-tests Na+, Cl-, & bicarbonate -Na+ is 90% cation-Cl- & Phosphate are 85% anions * Normal Gap Acidosis-Happens due to loss of bicarbonate, leads to renal absorption of Na+ & Cl- * High Gap Acidosis-measured by increase in anions, sulfates, phosphates, & lactic acids-results from renal failure Proteins and Metabolites Blood Urea Nitrogen (BUN)-end product of protein metabolism-indirect test for renal function-70-80% destruction of glomerulus before BUN appears...
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This note was uploaded on 11/23/2011 for the course DIAG 2735 taught by Professor Josephr.forese during the Winter '11 term at Life Chiropractic College West.

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DIAG 2735 Exam 3 - Test 3 Study Material Blood Chemistry Testing PH measures the blood hydrogen ion concentration PaO2-is the partial pressure of

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