Exam 18: Analysis and Monitoring of Gas Exchange

Which of the following indicates venous admixture during arterial puncture? I.need to use syringe suction II.dark-colored blood III.small sample volumes

Pulse oximeter readings are generally unreliable at saturations below what level?

To avoid thermal injury with transcutaneous blood gas monitor sensors, what should you do? I.Carefully monitor the sensor temperature. II.Apply hydrocortisone cream under the sensor. III.Regularly rotate the sensor site.

Which of the following is FALSE about transcutaneous blood gas monitoring?

All of the following must be charted after obtaining an ABG sample through the brachial artery except:

When inspecting an internal quality-control plot for a blood gas analyzer, you notice several data points sporadically appearing outside the 2 standard deviation (SD) range. This represents what type of analytic error? I.random error II.bias III.imprecision IV.systematic error

Indications for pulse oximetry include all of the following except the need

How is the accuracy of a blood gas analyzer determined?

During a single-breath capnogram, what does the occurrence of a plateau indicate?

What is the measurement of CO₂ in respiratory gases called?

After obtaining an arterial blood sample through percutaneous puncture using a syringe that does not have a capping safety device, what should you do?

All of the following can help avoid the problem of arterial blood sample contamination with air except:

While monitoring an active infant through a transcutaneous blood gas system, you notice a rapid rise in P_tcCO₂ from 63 to 145 mm Hg. During the same time, the (P_tcCO₂) drops from 35 to 7 mm Hg. What is the most appropriate action in this case?

Possible complications of capillary blood gas sampling include all of the following except:

Indications for arterial blood sampling by percutaneous needle puncture include all of the following except the need to:

All of the following factors determine the volume needed for an arterial blood sample except:

To avoid the dilution effects caused by too much sodium heparin during ABG sampling of an adult, what should you do? I.Ensure a sample volume greater than 2 ml. II.Use dry heparin instead. III.Fill the needle dead space only.

What is the best site for capillary puncture in an infant?

Under ideal conditions, electrochemical oxygen (O₂) analyzers have approximately what degree of accuracy?

After obtaining an arterial blood sample, what should you do? I.Apply pressure to the puncture site until bleeding stops. II.Place the sample in a transport container with ice slush. III.Check to see if the patient is getting anticoagulant therapy. IV.Mix the sample by rolling and inverting the syringe.