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Phleb Ch. 12-15
| Question | Answer |
|---|---|
| What pH value indicates alkalosis? | anything above 7.45 |
| What pH value indicates acidosis? | anything below 7.35 |
| Which artery is most commonly used for arterial blood gas collection? | radial |
| What is the normal pH of blood? | between 7.35 and 7.45 |
| What parameter is a measure of the percent of oxygen bound to hemoglobin? | O2 saturation |
| What blood parameter measures the amount of oxygen in the blood? | PO2 |
| What blood parameter is a measure of carbon dioxide levels in the blood? | PCO2 |
| Which blood parameter measures the acidity or alkalinity of the blood? | pH |
| What artery has the best collateral circulation? | radial |
| Where is the radial artery located? | Thumb side of the wrist. |
| What anticoagulant is used for arterial blood gas collection? | Heparin |
| What test measures the level of bicarbonate blood? | HCO3- |
| Where is the tourniquet placed for arterial blood gas collection? | a tourniquet is not used |
| A blood gas specimen that is not iced must be transported to the laboratory with what time frame? | 5-10 minutes |
| What test is commonly used to assess the collateral circulation of the radial artery? | Modified Allen test |
| What arterial sampling errors lowers pH value? | Too much heparin |
| What possible complication of the arterial puncture can close the artery, thereby preventing oxygen from reaching tissues? | Arteriospasm |
| What is the approximate blood volume of an average 150 pound adult? | 5 liters |
| What Is the maximum amount of a child's blood volume that may be removed over a 1 month period? | 10% |
| Removal of greater than what percentage of a child's blood volume can cause cardiac arrest? | 10% |
| How much blood can safely be withdrawn from the infant? | 1% of the infant's total blood volume |
| Infants should not have greater than what percentage of their blood volume removed in a 24- hour period? | 5% |
| What special precaution must be taken with neonatal bilirubin samples? | The specimen should be protected from light |
| What is the most commonly used anesthetic cream for venipuncture in pediatric patients? | EMLA |
| Adhesive bandages are not used on children younger than what age due to the danger of choking? | 2 years |
| What is the primary reason that blood collection for a child should be kept as calm and comfortable as possible? | Prolonged crying can affect white blood cell counts and pH levels |
| What is an inappropriate way to collect blood from a child? | Tell the child the procedure will not hurt |
| Define the term Jaundice | Yellowing of the skin caused by accumulation of bile |
| What organ processes bilirubin to keep its level from becoming too high in the blood? | Liver |
| Bilirubin is produced from the breakdown of what? | Red blood cells |
| How is identification of a newborn established before collecting a specimen? | By checking the infant's ID band |
| How are neonatal screening samples usually collected? | By dermal puncture absorbed onto filter paper |
| U.S. law requires states to test for a minimum of two inherited conditions. What are the two conditions? | Hypothyroidism and PKU |
| What effect does hemolysis of the specimen have on bilirubin tests? | It decreases the bilirubin level |
| Why must neonatal PUK testing be performed by heel stick rather than venipuncture? | Phenylalanine levels are different between veins and capillaries |
| Define Hyperglycemia- | High level of blood sugar |
| Time specimens are most likely to be requested for what? | digoxin |
| If a venipuncture is required on a child younger than 2, what is the preferred site for a phlebotomist using a butterfly needle to collect the sample? | Dorsal hand vein |
| After 12 hours of fasting and abstention from strenuous exercise, the body is said to be in what state? | postabsorptive state |
| A test requisition lists the glucose specimen to be collected as a 2 hour postprandial. When should it be collected? | 2 hours after the patients eats |
| What is the test that is used to diagnose hypoglycemia? | 5 hour oral GTT |
| When does the timing of an oral glucose tolerance test begin? | After the patient has finished drinking the glucose solution |
| What test is used to diagnose gestational diabetes? | 1 hour oral GTT |
| What is 2:30 in military time? | 14:30 |
| What specimen sample is used to check the success of vasectomy procedures? | semen |
| Which organ of the body creates urine? | Kidney |
| O&P requires a sample of what? | feces |
| During an oral GTT what is the patient allowed to consume? | only water |
| What type of fecal testing is used to detect the amoeba Giardia? | O&P |
| What is an acceptable specimen for semen analysis? | A sample collected in a sterile container at home and immediately delivered to the laboratory. |
Created by:
ward.Rayshawn