Exam 8: Invasive Blood Gas Analysis and Cardiovascular Monitoring

A 12-hour-old infant is experiencing respiratory distress, and the neonatologist orders a heel stick to assess the infant's oxygenation status. What action should the therapist take at this time?

Which of the following will cause a right shift in the oxyhemoglobin dissociation curve?

Which of the following arteries is considered the optimal puncture site for obtaining arterial blood samples from a pediatric patients?

Which of the following is one of the most common arrhythmias observed as a complication from the insertion of a pulmonary artery catheter?

On the basis of the position of the three-way stopcock shown here, identify which of the following activities related to arterial lineblood sampling is occurring.

Which of the following pulmonary artery catheter waveforms represents the catheter's normal location?

On the basis of the following waveform, in which of the following anatomic locations is the distal tip of the pulmonary artery catheter located?

A 3-kg neonate has lost 30% of his circulating blood volume. Approximately how much fluid should be infused to compensate for this loss?

On the basis of the following waveform, in which of the following anatomic locations is the distal tip of the pulmonary artery catheter located?

With an umbilical artery catheter (UAC) in the "low position," which of the following blood vessels should be avoided?

Which of the following conditions can cause methemoglobinemia?

On the basis of the following waveform, in which of the following anatomic locations is the distal tip of the pulmonary artery catheter located?

In addition to the dorsalis pedis, which of the following arteries is involved when the modified Allen's test is performed using a foot as the potential arterial puncture site?

A patient has a systolic blood pressure of 100 mm Hg and a diastolic pressure of 75 mm Hg. What is this patient's mean arterial pressure?

Which of the following factors would adversely affect the correlation between arterial puncture measurements and those from a capillary sample?

Which of the following factors influence the central venous pressure (CVP) measurement? I. Bicuspid valve function II. Right ventricular pressure III. Intravascular volume IV. Systemic venous return

How would tricuspid stenosis be expected to influence a patient's CVP value?

A respiratory therapist has been ordered to obtain a blood gas sample from a nonintubated premature baby. After selecting the best site to obtain the sample, what should the RT suggest to ameliorate the pain associated with the procedure?

If a blood gas sample is not obtained from an arterial stick in a premature baby without central access, which of the following sites should be considered because this blood vessel is larger than the radial artery at this age?

Calculate a patient's total arterial oxygen content given the following data: $\bullet$ Arterial oxygen tension (PaO₂), 100 mm Hg $\bullet$ Arterial carbon dioxide tension (PaCO₂), 45 mm Hg $\bullet$ Arterial oxygen saturation (SaO₂), 97.5% $\bullet$ Hemoglobin concentration ([Hb]), 15 g/dL $\bullet$ Cardiac output, 4.5 L/minute $\bullet$ Stroke volume, 55 mL/beat