Exam 10: Assessment of Respiratory Function

For a given minute ventilation,partial pressure of end-tidal carbon dioxide (PₑₜCO₂)is a function of which of the following? 1.Metabolic rate 2)Cardiac output 3)Alveolar dead space 4)Physiologic shunt

While trying to use a finger probe to assess a patient's oxygenation status,the respiratory therapist finds that the pulse rate and the ECG monitor heart rate are not consistent and the oxygen saturation measured by pulse oximeter (SₚO₂)reading is blank.The patient is awake,alert,and in no obvious respiratory distress.The respiratory therapist should first take which of the following actions? 1)Change the probe site. 2)Draw an arterial blood gas. 3)Adjust the probe position on the finger. 4)Remove the probe,and perform a capillary refill test.

Which of the following situations will cause an increase in the single-breath carbon dioxide (SBCO₂)curve?

A pulse oximeter differentiates oxyhemoglobin from deoxygenated hemoglobin by which of the following methods?

A patient is receiving mechanical ventilation with a fractional inspired oxygen (FɪO₂)of 0.85 and a positive end-expiratory pressure (PEEP)of 5 cm H₂O.His arterial partial pressure of oxygen (PₐO₂)is 68 mm Hg,arterial oxygen saturation (SₐO₂)is 88%,and partial pressure of end-tidal carbon dioxide (PₑₜCO₂)is 32 mm Hg.Over the next few minutes his PEEP is titrated resulting in the following data: Time ( (\%) () 0600 0.85 5 88 30 0630 0.85 8 88 30 0650 0.85 10 90 32 0720 0.80 12 93 34 0740 0.80 15 90 25 At 0740 the single-breath carbon dioxide (SBCO₂)curve shifted to the right.What action should the respiratory therapist take at this time?

At which point in the pressure-time curve of a spontaneous breath should the transdiaphragmatic pressure be greatest?

The energy required to move gas through the airways and expand the thorax is known as which of the following?

The area under the curve of a single-breath carbon dioxide (SBCO₂)curve represents which of the following?

The area represented by the letter "Y" in the figure is which of the following?

A transcutaneous partial pressure of oxygen (PₜᴄO₂)reading is reliable in which of the following situations?

How often should the respiratory therapist reposition the sensor of a transcutaneous monitor?

An arterial blood gas should be done to confirm pulse oximetry findings less than a minimum of _____________.

A patient whose carbon dioxide (CO₂)production is 390 mL/min and oxygen (O₂)consumption is 375 mL/min is most likely experiencing which of the following?

Calculate the static compliance given the following clinical data: tidal volume 600 mL,peak inspiratory pressure (PIP)40 cm H₂O,plateau pressure (Pₚₗₐₜₑₐᵤ)30 cm H₂O,positive end-expiratory pressure (PEEP)15 cm H₂O,and tubing compliance Cᴛ2 mL/cm H₂O.

The capnogram in the figure is indicative of which of the following conditions?

Pulse oximetry is most useful in which of the following situations?

During which phase of a capnogram does inhalation occur?

The normal range for arterial-to-end-tidal partial pressure of carbon dioxide [P₍ₐ₋ₑₜ₎CO₂] is which of the following?

Calculate the airway resistance given the following clinical data: flow rate 60 L/min,peak inspiratory pressure (PIP)42 cm H₂O,plateau pressure (Pₚₗₐₜₑₐᵤ)15 cm H₂O,and positive end-expiratory pressure (PEEP)5 cm H₂O.

The clinical data that should be recorded when making transcutaneous measurements include which of the following?1.Electrode temperature 2)Skin temperature 3)Probe placement 4)Fractional inspired oxygen (FɪO₂)