Mechanical Vent Test 1 Practice

These questions are part of the practice quiz. Start practicing

• Which cycling ends inspiration when preset inspiratory time (Ti) is reached?
• What plateau pressure target is recommended in the ARDSnet strategy to minimize barotrauma?
• In SIMV mode, what does the ventilator provide?
• Which pressure is the pressure required to inflate the lungs during positive pressure ventilation?
• How does low lung compliance affect the relationship between tidal volume and airway pressures?
• Which pressure difference produces airflow in the conducting airways?
• What is a T-piece trial in mechanical ventilation and how is it used in weaning?
• In a pressure-controlled breath, how do volume and flow vary with compliance and resistance?
• Which ventilation mechanism mimics natural breathing by transmitting negative pressure from the chest surface to the pleural and alveolar spaces?
• Which process describes the exchange of CO2 and O2 between the lungs and the blood?
• What is a common hemodynamic downside of excessive PEEP?
• Ptp equals Palv minus Ppl. This defines which pressure?
• What is double triggering and how can it be prevented?
• In a volume-controlled breath, what happens to the volume waveform?
• Which practice is specifically aimed at reducing the duration of mechanical ventilation by assessing readiness for spontaneous awakening?
• Which fluidics principle allows gas to exit through only one output port?
• What term describes the ease with which the lungs expand and accept a gas?
• Touch panels or dials on a ventilator control panel are collectively referred to as the?
• What is a key component of a structured weaning protocol to reduce extubation failure?
• Trigger, limit, cycle, and baseline describe which aspect of ventilator operation?
• Intrapleural pressure at end expiration during passive breathing is which value?
• What outcome is associated with implementing a VAP prevention bundle?
• Which of the following are common signs of ventilator-associated pneumonia (VAP)?
• Two types of resistance are what?
• Define driving pressure and explain why it matters in mechanical ventilation.
• What is plateau pressure, how is it measured, and what is the recommended target to reduce volutrauma risk?
• Which strategy recruits alveoli and maintains recruitment during ventilation?
• In a volume-controlled breath, which statement is true about volume and pressure?
• Why is tidal volume commonly set to approximately 6 ml/kg PBW?
• In PSV mode, when is ventilator assistance provided?
• Time constant in the respiratory system is the product of which two factors?
• Which term represents the three categories of breaths described as spontaneous, mandatory, and assisted?
• How many ventilator variables are there?
• What is the target MAP in ARDS management?
• Which statement best describes AC/VCV mode?
• During mechanical ventilation, what is the recommended immediate response to a circuit disconnection or leak?
• In mech ventilation, what triggers the transition from exhalation to inspiration for time-based triggering?
• Which property describes the lungs' tendency to return to their original shape after expansion?
• Two primary characteristics of the lungs?
• During positive pressure ventilation, which phase has positive pleural pressure?
• If a low-pressure alarm indicates a circuit leak or disconnection, what is the appropriate response?
• Which statement describes a component of standard extubation readiness criteria?
• What is the role of recruitment maneuvers in ARDS, and when should they be used with caution?
• Which control parameter caps the maximum pressure delivered to the airways during inspiration?
• After two time constants, approximately what percentage of lung unit filling is achieved?
• Which statement best describes management before extubation when edema is suspected?
• Which ventilator graphics findings indicate patient-ventilator asynchrony?
• Which pressure helps maintain alveolar inflation?
• How is the rapid shallow breathing index calculated, and what value suggests readiness for weaning?
• What is the difference between a pressure trigger and a flow trigger, and which is more sensitive?
• Which term encompasses the concepts of initiating inspiration through time-based or patient effort signals?
• Intraalveolar pressure at end inspiration and end expiration during passive breathing is what value?
• In breath trigger sensitivity, increasing sensitivity makes triggering occur more easily. Which statement is accurate?
• The equation of motion in ventilator mechanics creates which pressure gradient?
• Which device is used for noninvasive ventilation?
• When is neuromuscular blockade indicated during mechanical ventilation, and how is blockade monitored?
• Which pressure equals Paw minus Palv?
• What is the primary purpose of PEEP in mechanical ventilation?
• Which method is used to assess diaphragm function relevant to weaning?
• Which type of resistance usually doesn't change?
• How should tidal volume be set to minimize ventilator-induced lung injury, and what is the standard target in adults?
• In a volume-targeted and pressure-limited mode, what is the primary breath parameter being controlled?
• Which criterion indicates readiness to perform a spontaneous breathing trial (SBT)?
• During weaning, what is the typical target for the RASS and why?
• What is one purpose of bilevel (BiPAP) mode?
• How do you calculate alveolar ventilation and why is it clinically important?
• What are the two forces that oppose inflation of the lungs?
• The variable that terminates inspiration in a ventilator is called what?
• A flow-based trigger is typically configured relative to which reference?
• Which cycling terminates breath when the pressure limit is reached and acts as a safety mechanism?
• What is the immediate action plan for a patient with sudden desaturation while on a ventilator?
• Breath triggers can be driven by time or by patient effort; which option describes patient effort changes during triggering?
• What variable signals the end of an inspiration by closing the inspiratory valve?
• Which term best describes a breath where the system maintains a stable pressure waveform across breaths?
• Which ventilation approach uses flow control to measure flow and calculate volume, with flow and volume waveforms constant?
• Which statement distinguishes invasive mechanical ventilation from noninvasive ventilation, and what is a typical NIV scenario?
• What is a general contraindication to prone positioning?
• What is the difference between using a heated humidifier and a heat-and-moisture exchanger (HME) in the ventilator circuit?
• Which test identifies diaphragmatic weakness prior to weaning?
• In a pressure-controlled breath, how does the pressure waveform respond to changes in patient lung characteristics?
• Ptt equals Palv minus Pbs. This is which pressure?
• Which variable is defined as the trigger that begins inspiration?
• The expression (PIP minus PLAT) divided by Flow equals which ventilator parameter?
• Which statement best describes CPAP in contrast to PEEP?
• Which term refers to the variables that define the initiation of an inspiratory phase (trigger, limit, cycle)?
• Which ventilator graphics pattern suggests increased airway resistance such as bronchospasm or mucus plugging?
• Lung compliance is defined as the ratio of change in volume to change in pressure, written as which expression?
• BiPAP is an abbreviation for which term?
• When should you escalate for a ventilator malfunction?
• What is a first-line set of actions to address a sudden high peak inspiratory pressure on a ventilator?
• Which ventilation mode measures flow and calculates volume, with flow and volume waveforms remaining constant while pressure waveform varies with compliance and resistance?
• What term is also known as PEEP and is usually zero unless set, increasing functional residual capacity when applied?
• Palv minus Pbs corresponds to which pressure?
• Which fluidics principle allows gas to exit two output ports with unequal flow depending on which control is activated?
• What term is used to label the set of variables that define the start, limit, and end of the inspiration phase?
• In PRVC, if the exhaled volume is higher than the target, what happens to inspiratory pressure on the next breath?
• What are the main differences among AC/VCV, SIMV, and PSV modes, and when might each be used?
• Which circuit type is most ICU ventilators classified as?
• What is the period between end of one inspiration and the beginning of the next inspiration?
• How many time constants are used in mechanical ventilation?
• Which unit is used to express airway or intrapulmonary pressures in respiratory mechanics (often seen as cmH2O)?
• What mode delivers spontaneous breathing support with two CPAP levels, IPAP and EPAP?
• In breath triggering, what pressure threshold is commonly used to trigger inspiration?
• Which variable ends expiration and is typically associated with pressure?
• Which feature describes how two-level CPAP (IPAP/EPAP) supports ventilation?
• Which statement about PEEP and derecruitment is true in the context of mechanical ventilation?
• Noninvasive ventilation (NIV) is typically indicated for which scenarios, and what are common contraindications?
• Regarding cuff leak testing and post-extubation edema, which statement is correct?
• What term denotes the period between end of inspiration and start of the next inspiration?
• Which process describes the exchange of CO2 for O2 between blood and tissues?
• In this ventilator mode, the breath cycle is defined by which variable?
• Time Constants help determine inspiratory/expiratory time settings (Ti and TE) to ensure adequate volume delivery.
• Which statement correctly distinguishes a high-pressure alarm from a low-pressure alarm on a ventilator and how you should respond?
• What is auto-PEEP, and which ventilator adjustments help reduce it?
• Pta equals Paw minus Palv. This describes which type of pressure?
• Which pair represents atmospheric pressure in both mmHg and cm H2O?
• Why is daily sedation interruption and delirium monitoring important in the ventilated patient?
• Which control system does not compare output with input for control and often requires human intervention?
• Increases in airway resistance (Raw) or compliance (CL) affect time constants how?
• Name four components of a ventilator-associated pneumonia (VAP) prevention bundle.
• Intrapleural pressure at end inspiration during passive breathing is which value?
• Which statement best describes airway pressure release ventilation (APRV) and identifies one advantage and one risk?
• What are recruitment maneuvers, and what patient risks require caution when applying them?
• Under what condition is plateau pressure measured?
• Atmospheric pressure is commonly expressed as which value?
• Which cycling ends a breath when flow drops to a specific percentage of peak flow?
• What is the first step in addressing sudden desaturation on a ventilator?
• What term describes the power sources for a ventilator that can be electrical, pneumatic, or a combination, generating both negative and positive pressures?
• Which component regulates the flow rate of air delivered to the patient?
• What is one reason proning may be used in ARDS?
• Coanda Effect refers to which phenomenon?
• Why is prolonged high FiO2 exposure harmful, and how can you mitigate risk in ventilation management?
• What does PEEP do in mechanical ventilation, and what are the potential downsides of excessive PEEP?
• What limit variable controls volume and flow during inspiration?
• Which breath type maintains the volume waveform in a specific pattern, delivering a fixed volume?
• What term describes the signal or target that ends inspiration and begins expiration?
• How should PEEP be titrated in ARDS management?
• In obstructive lung disease, how should the I:E ratio be adjusted to minimize air trapping?
• Which are the key elements of the ARDSnet lung-protective ventilation strategy?
• How should FiO2 be titrated in an acutely hypoxemic patient to balance oxygen delivery and toxicity risk?
• In high peak pressure scenarios, why is plateau pressure measurement important?
• How does obesity influence ventilator management?
• What term describes a control system that adjusts its behavior based on measuring its output?
• Which term describes ventilation where air is delivered into the lungs via an endotracheal tube or a positive pressure mask?
• Which device uses gas principles to control flow with no moving parts, involving wall attachment and beam deflection?
• How do you calculate predicted body weight (PBW) for males and females?
• What term describes the length of time required for lung units to fill and empty?
• IPAP stands for which phrase?
• Sensitivity in mechanical ventilation is typically set by triggering either a pressure or a flow change. Which option describes this?
• Which term is commonly used to describe two-level airway pressure modes often referred to as BiPAP?
• Which mechanism ends inspiration when a pressure limit is reached and commonly serves as a safety feature?
• What is the recommended cuff pressure for an endotracheal tube and why is monitoring important?
• In PRVC, if the exhaled tidal volume matches the target, what happens to the inspiratory pressure on the next breath?
• In ARDSnet guidelines, what tidal volume per kilogram of predicted body weight is commonly used for protection?
• What effect does applying PEEP have on functional residual capacity?
• In volume-controlled breaths, how does pressure behave with changes in compliance and resistance?
• Which cycling terminates breath when a preset inspiratory time (Ti) is reached?
• What is the primary physiological benefit of prone positioning in ARDS?
• Which cycling terminates breath when flow drops to a specific percentage of its peak?
• Compare square-flow and decelerating-flow inspiratory patterns in terms of patient comfort and work of breathing.
• Which cycling mode terminates breath when the target tidal volume is reached?
• Decreased lung compliance (CL) results in what change to the lung mechanics time constant?
• Which of the following is NOT a typical sign of ventilator-associated pneumonia?
• What are the two methods used to deliver inspiration?
• Which parameter prevents the ventilator from delivering more than a set amount of air during a breath?
• Which mechanism terminates a breath when the target tidal volume is reached?
• Why is prone positioning used in moderate-to-severe ARDS, and what are key considerations?
• In COPD patients, what ventilation adjustments help avoid dynamic hyperinflation?
• If plateau pressure is normal while peak inspiratory pressure is elevated, what does this pattern suggest?
• Which statement about a VAP prevention bundle is NOT typical?
• During extubation readiness, which condition describes adequate oxygenation?
• Which of the following is a risk factor for extubation failure?
• In mech ventilation, what triggers the transition from exhalation to inspiration for flow, pressure, or volume?
• What is a typical PEEP range used in lung-protective ventilation, and how is it individualized?
• List two sedative strategies for a patient on mechanical ventilation and a monitoring measure to titrate depth.
• What is the primary goal of lung-protective ventilation in ARDSnet using a low tidal volume?
• Which describes the dual ventilator mode?
• Which three breaths types are commonly described as Spontaneous, Mandatory, and Assisted?
• Which target set best guides ARDS management during mechanical ventilation?
• What ventilator mode delivers breaths that are pressure-controlled but targeted to achieve a specific tidal volume by adjusting pressure?