Mechanical Vent Test 4 Practice

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• To measure plateau pressure, inspiration should be held for how many seconds?
• In some configurations, CPAP corresponds to which mode as the equivalent pressure-targeted continuous ventilation?
• Which factor is most associated with inadequate inspiratory flow during mechanical ventilation?
• An inadequate flow setting during volume ventilation will cause which of the following to occur?
• Which measurement provides the best index of alveolar ventilation efficiency during a single-breath CO2 test?
• What is the goal of lung-protective ventilation in ARDS?
• Which test is commonly used to assess weaning readiness?
• What is the recommended FiO2 titration strategy during mechanical ventilation?
• An energy expenditure of 60 kcal/hr/m2 for an adult is indicative of which condition?
• Which mode maintains a continuous baseline pressure and adds pressure support only when the patient initiates a breath?
• If plateau pressure exceeds 30 cm H2O, what is the recommended initial ventilation adjustment?
• Which pairing correctly associates the transcutaneous measurement with its electrode type?
• What is driving pressure and why is it important?
• Which measurement best assesses diaphragm function during inspiration?
• In ARDS, what SpO2 target range is commonly aimed for?
• Ventilator graphics assist daily patient assessment by detecting which combination?
• Which action is indicated when a disparity exists between SpO2, SaO2, and the clinical presentation of a patient?
• With Vt 600 mL, Pplat 20 cmH2O, PEEP 5 cmH2O, PIP 26 cmH2O, static compliance Cs is closest to which value?
• Which term is used for breaths that are initiated by the patient without mandatory ventilator breaths?
• Driving pressure is defined as which of the following?
• Dynamic compliance calculation: tidal volume 500 mL, PIP 35 cm H2O, PEEP 5 cm H2O, what is Cd?
• What is the difference between pressure-controlled ventilation (PCV) and volume-controlled ventilation (VCV) modes?
• What are typical ABG findings in a patient with ventilator-associated pneumonia (VAP) vs ARDS?
• Explain the interpretation of a leak in the ventilator circuit and what actions to take.
• On a ventilator, FiO2 sets which value?
• Which mode combines SIMV with pressure support and PEEP in a pressure-controlled framework?
• What do ventilator graphics help detect during daily assessment?
• An increase in airway resistance during pressure ventilation will result in which of the following?
• Which statement best contrasts CMV and A/C in terms of triggering and tidal volume delivery?
• What are common ventilator alarms and typical troubleshooting steps for high peak airway pressure?
• When noninvasive oxygen-saturation readings are inconsistent with the clinical picture, the most appropriate method to determine arterial oxygen saturation is:
• Mean airway pressure calculation: Given PIP 25 cm H2O, PEEP 5 cm H2O, Pplat 20 cm H2O, inspiratory time 0.8 s, and RR 20/min, what is Paw?
• Which mode includes SIMV-VC with pressure support and PEEP?
• Airway resistance calculation: flow 50 L/min, PIP 40 cm H2O, Pplat 20 cm H2O, PEEP 8 cm H2O. What is Raw?
• How does chest wall compliance affect ventilator settings in obesity or edema?
• Which instrument should be used to assess oxygenation status in a patient with suspected carbon monoxide exposure?
• The newest types of mechanical ventilators use which devices to measure airway pressures?
• What is the role of alveolar recruitment with sedation and analgesia in ARDS?
• Which statement best describes a protective strategy in ARDS?
• Explain the significance of plateau pressure measured with an inspiratory hold, and how to perform it.
• In transcutaneous oxygen monitoring, which type of electrode is used for PtcO2 measurement?
• An energy expenditure of 60 kcal/hr/m2 is most strongly associated with which condition?
• Which breath type is delivered with patient effort and ventilatory augmentation, not a pure spontaneous breath?
• What are common causes of hypotension during mechanical ventilation and how to manage?
• The volume-time curve on a volume-time scalar is consistently dropping below the baseline during exhalation. The first action to take is which of the following?
• Define spontaneous breathing trial (SBT) and describe typical criteria for initiating and conducting an SBT.
• The respiratory therapist has stopped postural drainage for a 24-year-old with cystic fibrosis who shows shortness of breath and mild cyanosis in the head-down position. The recommended adjustment is which of the following?
• A patient showing signs of increased airway resistance while ventilated is most likely to be in which mode?
• What is the significance of dead space and how does it affect ventilator settings?
• What is the formula for Airway Resistance (Raw) in terms of transairway pressure and inspiratory flow rate?
• Which of the following would increase the SBCO2 curve?
• A pulse oximeter differentiates oxyhemoglobin from deoxygenated hemoglobin by which method?
• During a spontaneous breath, at which part of the pressure-time curve is transdiaphragmatic pressure greatest?
• Which mode delivers breaths with the tidal volume set by a target while maintaining patient-triggered breaths?
• What term denotes loss of delivered tidal volume due to a breach in the ventilator circuit?
• In protective lung ventilation for ARDS, what tidal volume range is typically used per predicted body weight?
• Which mode combines SIMV with pressure control and includes pressure support and PEEP?
• PetCO2 monitoring provides information about which of the following?
• How is dynamic compliance Cd defined?
• Which formula correctly defines Mean Airway Pressure (Paw) in terms of PIP, PEEP, Ti, and TCT?
• An energy expenditure of 20 kcal/hr/m2 for an adult is indicative of which condition?
• Which term describes a condition characterized by air remaining in the lungs due to incomplete exhalation?
• What is the role of PEEP in alveolar recruitment and oxygenation?
• In capnography, the initial portion of exhaled gas from the conducting airways represents which type of gas?
• What is driving pressure, and why is it important?
• In volume-controlled continuous mandatory ventilation (VC-CMV), which condition typically causes the pressure-volume loop to extend farther to the right and flatten?
• In which scenario are neuromuscular blocking agents (NMBAs) typically indicated?
• A COPD patient being weaned from mechanical ventilation, a diet containing which will be most beneficial?
• The mode SIMV-PC is best described as synchronized intermittent ventilation with which feature?
• In energy-metabolism assessment, starvation is suggested by which dietary pattern?
• Which factor is the primary determinant of airway resistance?
• When interpreting an arterial blood gas (ABG) in a patient on mechanical ventilation, what should you look for?
• Which mode includes an added pressure support in addition to intermittent mandatory ventilation?
• Delayed termination during pressure support ventilation (PSV) can be avoided with COPD by doing which of the following?
• A flow-loop display reveals an air leak characteristic of which ventilation type?
• What is PRVC and how does it adapt tidal volume?
• Explain the concept of patient-ventilator asynchrony and common strategies to improve synchrony.
• Exhaled nitric oxide monitoring in asthma is used to assess the effectiveness of which drug class?
• During application of PEEP, monitoring which pressure will alert the respiratory therapist specifically to alveolar overdistention?
• Improvement after bronchodilator treatment is most consistent with which ventilation mode?
• What defines a successful spontaneous breathing trial (SBT)?
• Which term indicates reduced lung compliance (stiffer lungs)?
• What is the most protective practice to minimize ventilator-induced lung injury?
• What flowmeter will read accurately when used with heliox?
• In pressure ventilation, a decrease in compliance leads to which outcome when ventilator settings are unchanged?
• Which finding would suggest auto-PEEP in a COPD patient on ventilation?
• What is the purpose of humidification, and what can occur with inadequate humidification?
• Which temperature range is correct for the PtcO2 electrode?
• Which two waveforms are common for pressure scalars?
• During calibration, which action is recommended to address signal drift?
• Which mode would be used when bronchodilator response is expected?
• Driving pressure in ARDS studies is associated with what outcome?
• Capnography primarily provides information about ventilation by measuring which parameter?
• Explain the concept of PEEP titration strategies such as "PEEP/FiO2 tables" and "driving pressure guided PEEP".
• Bidirectional flow can be measured by which device?
• In capnography interpretation, which option best defines alveolar dead space?
• An increase in intrinsic work of breathing due to a decrease in static compliance is caused by which condition?
• Which capnography phase corresponds to the inhalation of air into the lungs?
• CPAP is best described as providing continuous positive airway pressure without mandatory breaths.
• The type of flow curve produced by volume ventilation with constant flow is which of the following?
• Which ventilation mode provides synchronized intermittent mandatory breaths with pressure support?
• Transcutaneous oxygen tension monitoring measures which parameter?
• Which factor would raise PetCO2 if minute ventilation remains unchanged?
• How do you manage ventilator settings in a patient with COPD to avoid dynamic hyperinflation?
• Which sedation strategy is associated with improved extubation readiness?
• Which term refers to a breath that is delivered with patient effort but is augmented by the ventilator?
• Which statement best defines a breath delivered with ventilator assistance that augments patient effort?
• In the mean airway pressure formula Paw = 1/2 [(PIP - PEEP) × (Ti/TCT)] + PEEP, what does the ratio Ti/TCT represent?
• The term describing an inspiratory flow or pressure waveform that increases with an exponential pattern is called:
• Which mode uses synchronization with volume control in intermittent mandatory ventilation?
• An increase in the gradient between PaCO2 and PetCO2 is most consistent with which condition?
• An air leak detected on the ventilator's scalar display is most commonly associated with which ventilation mode?
• End-tidal CO2 reading is most closely related to which of the following?
• Which formula correctly relates minute ventilation and tidal volume?
• What is the main purpose of an SBT in the weaning process?
• Plateau pressure significance: what is the target in ARDS?
• Which factor increases the pressure required to deliver a given tidal volume on inspiration?
• What is the correct formula to convert liters per minute (L/min) to liters per second (L/sec)?
• Which term corresponds to a scalar measure used to describe decreased lung compliance?
• Explain the impact of sedation depth on weaning and how daily sedation holds influence extubation success.
• What is the primary goal of volume-targeted ventilation in protecting the lungs?
• Which statement best describes trigger sensitivity in ventilators?
• Which index is used to assess readiness to wean from mechanical ventilation?
• What is the required temperature range for the PtcO2 electrode during operation?
• Which term denotes a breach in the airway circuit around an endotracheal tube leading to loss of delivered tidal volume?
• Alveolar dead space is best defined as which of the following?
• Which device measures carboxyhemoglobin and methemoglobin in addition to oxygen saturation?
• Which statement best describes breaths seen in spontaneous non-assisted modes?
• Which term denotes lung overdistension due to large tidal volumes?
• Explain the role of tidal volume in protective lung ventilation for ARDS and the typical target range.
• Plateau pressure is measured during an inspiratory hold and reflects which of the following?
• What is the role of recruitment maneuvers and their risks (e.g., barotrauma, hemodynamic compromise)?
• What is a key consideration when adjusting PEEP to balance recruitment and overdistension?
• An arterial blood gas should be done to confirm pulse oximetry findings less than a minimum of _______.
• If a transcutaneous monitor indicates calibration signal drift, which action should be taken?
• Which ventilator complication results from excessive tidal volumes causing alveolar overdistension?
• In APRV, how are the two pressure levels used and what is the goal?
• Interpreting a pressure-volume loop: signs of overdistension include?
• A sudden drop in SpO2 in an intubated patient on mechanical ventilation should prompt which initial action?
• Which factor tends to increase mean airway pressure?
• How do obesity or chest wall restrictions affect ventilator settings and weaning?
• What is a typical sedation target strategy during mechanical ventilation?
• Define peak inspiratory pressure (PIP) and plateau pressure, and explain why plateau pressure is more relevant for lung protection.
• Which of the following is a component of an indirect calorimeter?
• The area under the SBCO2 curve represents which of the following?
• During which phase of a capnograph does alveolar gas containing carbon dioxide (CO2) mix with gas from the anatomical airways and the CO2 concentration rises?
• Which waveform shape is characterized by a rapid rise at the beginning of inspiration that slows later?
• What hemodynamic consequence can occur with excessive PEEP?
• During a patient-ventilator system check, the pressure-volume loop begins at zero on the x-axis but does not return to zero during expiration. The cause of this is which of the following?
• Which data elements should be recorded when making transcutaneous measurements?
• Which mode combines synchronization with volume control and intermittent mandatory breaths?
• What is the concept of alveolar recruitment and the goal of PEEP in ARDS management?
• PC-CMV is a mode characterized by which feature?
• A patient arrives in the emergency department after rescue from a house fire. The instrument most appropriate to assess this patient’s oxygenation status is which of the following?
• What should be included in a daily ventilator check to ensure safety and readiness?
• A patient on mechanical ventilation has been monitored for SpO2 for 48 hours. When SpO2 falls from 95% to 90% with an appropriately placed probe and normal capillary refill, the most appropriate immediate action is to:
• The RQ value of 0.8 is associated with which substrate utilization pattern in normal individuals?
• Which ventilation strategy uses breaths with a set tidal volume rather than variable pressure?
• In a freshly postoperative patient who is fully supported on a ventilator and has not awakened from anesthesia, the most appropriate action when stability is observed on capnography is to:
• While using a finger probe, the pulse rate and ECG heart rate are inconsistent and SpO2 is blank. The first action the respiratory therapist should take is which of the following?
• Which ventilator mode combines CPAP with an additional pressure support breath?
• PetCO2 is typically measured at which point on a capnography trace?
• Transairway pressure is the difference between which two pressures?
• What is a recruitment maneuver and when might it be used?
• A pulse oximeter reading will be most accurate when used with a patient in which scenario?
• Which mode delivers volume-controlled breaths in synchronization with the patient and can include pressure support and PEEP?
• Peak inspiratory pressure (PIP) reflects which of the following factors?
• What is the role of PEEP in preventing alveolar collapse, and what are risks of excessive PEEP?
• How does increasing PEEP affect oxygenation and driving pressure, and what is the potential downside?
• In ARDS, what tidal volume is commonly used for lung-protective ventilation based on predicted body weight?
• What is the driving pressure and how is it calculated?
• A patient on mechanical ventilation with PaCO2 41 mmHg and PetCO2 36 mmHg experiences a sudden drop in PetCO2 to 18 mmHg. The most likely cause is which?
• Which term refers to a numerical scalar used to track changes in lung compliance?
• A transcutaneous PtcO2 reading is most reliable in which patient condition?
• Mean airway pressure calculation: Given PIP 34 cm H2O, PEEP 10 cm H2O, TI 1 s, RR 14/min, and Pplat 24 cm H2O, what is Paw?
• A pressure-volume loop that begins at zero on the x-axis and does not return to zero during expiration may indicate which issue?
• What is the recommended interval for repositioning the transcutaneous sensor?
• A patient whose CO2 production is 390 mL/min and O2 consumption is 375 mL/min is most likely experiencing which?
• Which condition is associated with a reduction in exhaled nitric oxide?
• Which mode is most associated with increased airway resistance leading to a noticeable change in flow pattern?
• What is the correct relationship for Total Cycle Time (TCT) in relation to inspiratory time and respiratory rate?
• What is the most important factor affecting the degree of resistance in the airways?
• Which step is appropriate when high airway peak pressure occurs with a fully closed filter or secretions?
• The change in the SBCO2 curve from point A to point B may be a result of which of the following?
• In patients without ARDS but with other lung injuries or obesity, what approach can implement lung-protective strategies?
• The normal arterial-to-end-tidal CO2 difference is which range?
• Which mode describes synchronized intermittent ventilation with pressure control?
• How is static compliance Cs defined?
• Which electrode type is used for transcutaneous carbon dioxide (PtcCO2) monitoring?
• Which statement correctly describes static and dynamic compliance definitions?
• During which phase of a capnogram does inhalation occur?
• Given Raw = Pta / flow, what is the effect on Raw if inspiratory flow increases while Pta stays the same?
• Which parameter does a pulse oximeter measure?
• In noninvasive ventilation (NIV), what are common indications and contraindications?
• Dynamic compliance is defined as tidal volume divided by which of the following differences?
• In volume ventilation with a constant flow, which statement best describes the expected flow pattern?
• How often should the transcutaneous O2 sensor be repositioned?
• Pulse oximetry estimates arterial oxygen saturation by measuring the absorption of light at how many wavelengths?
• A commonly recommended maximum plateau pressure to minimize risk of alveolar overdistention is which value?
• Pulse oximetry is most useful in which of the following situations?
• The respiratory quotient (RQ) value associated with substrate utilization patterns in normal, healthy individuals is which value?
• An air leak observed on the ventilator flow loop is most likely to occur during which type of ventilation?
• In ARDS management, what is a typical PaO2 target range?
• How is Transairway Pressure (Pta) defined?
• How can volume-targeted ventilation strategies help reduce ventilator-induced lung injury?
• What is the difference between passive and spontaneous ventilator modes?
• Which component is essential to effective lung protection in volume-limited ventilation?
• Which device is a component of an indirect calorimeter?
• Transcutaneous CO2 monitoring provides an estimate of which arterial parameter?
• In the context of ventilation for obesity or chest wall restrictions, what monitoring is important when applying low tidal volumes?
• What is the definition of driving pressure in ventilator management?
• What does a large A-a gradient indicate in ARDS?
• The term used to specify the flow, pressure, and volume waveforms graphed relative to time is called:
• Static compliance calculation: tidal volume 500 mL, PIP 38 cm H2O, Pplat 26 cm H2O, PEEP 12 cm H2O, what is Cs?
• In COPD patients undergoing PSV, which adjustment helps avoid delayed termination?
• What is the difference between CPAP mode and a spontaneous breathing trial (SBT) on a ventilator?
• How should clinicians monitor for ventilator-induced lung injury risk and protective strategies?
• A condition that increases alveolar dead space, leading to a larger PaCO2-PetCO2 gradient, is most likely which?
• In which scenario are breaths spontaneously initiated by the patient without mandatory breaths from the ventilator?
• Which term describes air remaining in the lungs after exhalation, often increasing work of breathing?
• After making changes to tidal volume or PEEP, what should be done to ensure patient protection and gas exchange remains adequate?
• The energy required to move gas through the airways and expand the thorax is known as which of the following?
• Increasing PEEP while keeping tidal volume constant generally has what effect on mean airway pressure?
• What are FiO2 settings and PEEP's role in oxygenation management, and how should FiO2 be titrated?
• A reduction in compliance during pressure ventilation will cause which of the following?