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Dx Studies of Resp. SystemMedical Surgical Nursing

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Question Answer
A _________ is done by injecting radioopaque dye into the pulmonary artery. It is used to diagnose PE, congenital or acquired lesions lesions of pulmonary vessels.
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Pulmonary Angiography
_______ are used to distinguish benign and malignant solitary modules.
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Positron Emission Tomography (PET) Scans
What is the normal level of hemoglobin?
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Men: 13.5-18 g/dL Women: 12-16 g/dL
For a hemoglobin level, is a venous or arterial site used?
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Venous
What does a hemoglobin test show?
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The amount of hemoglobin available for combination with oxygen
What does a hematocrit test show?
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The ratio of RBCs to plasma. If it is high, this is indicative of polycythemia
What are the normal levels for a hematocrit?
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Men: 40-54% Women: 38-47%
Is a hematocrit level drawn from a venous or an arterial site?
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Venous
What arteries are typically used for an ABG?
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Through the radial or femoral arteries.
When obtaining an arterial blood gas from a patient, how long should you wait after an intervention (whether it's suctioning or a position change, etc.) to obtain the sample?
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20 minutes
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After collecting an ABG, how long should you apply pressure to the collection site and why?
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For five minutes to prevent a hematoma from developing
Blood for ABG should be drawn using a ________ syringe.
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Heparinized
What should happen to a blood sample drawn for ABG once its been collected?
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If the sample won't be analyzed within one minute, it should be placed in ice to ensure accuracy
T/F Oximetry is used to measure arterial or venous oxygen saturation.
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True
Where are oximetry probes placed to measure SpO2?
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SpO2 is a venous measurement, so the probes are placed on the earlobe, finger, or nose. Note: SPO2 as best as I can tell, means Saturated Pulse Oxygen
Where are pulse oximetry probes placed when measuring SvO2?
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SvO2 is an arterial measurement, it is obtained from a pulmonary artery catheter Note: SvO2 as far as I can tell, means Saturated venous oxygen
What factors can alter the accuracy of oximetry?
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The patient moving around, having cold extremities, low perfusion, bright lights, intravascular dyes, acrylic nails, dark skin color, carbon monoxide, various types of anemia.
When should a provider be notified about SpO2 values?
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If there is a 4% change from a patient's baseline, or if the SpO2 is below 90%.
When should a provider be notified about SvO2 values?
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If there is a 10% change from baseline or if it decreases to less than 60%.
How long does it take for a culture & sensitivity to yield results?
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24-72 hours
When is the best time to collect a sputum sample?
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In the early morning, after mouth care
  
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