Overview of Ventilators

These flashcards cover the key concepts related to ventilators, their types, functions, and settings important for respiratory therapy.

What are ventilators used for?

Ventilators assist or control breathing in patients who are unable to breathe adequately on their own.

What are invasive ventilators?

Invasive ventilators connect to the patient through an artificial airway such as an endotracheal tube or tracheostomy.

Who commonly uses invasive ventilators?

Invasive ventilators are commonly used in intensive care settings for patients with severe respiratory failure.

What is the primary function of non-invasive ventilators (NIV)?

Non-invasive ventilators use a mask or nasal prongs to deliver positive pressure without the need for an invasive airway.

What conditions are non-invasive ventilators typically used for?

They are typically used for conditions like obstructive sleep apnea or acute exacerbations of chronic obstructive pulmonary disease (COPD).

What does BiPAP stand for?

BiPAP stands for Bilevel Positive Airway Pressure.

What is the function of BiPAP?

BiPAP provides two pressure settings: inspiratory and expiratory.

What is the primary usage of CPAP?

CPAP is primarily used to keep airways open during sleep in obstructive sleep apnea patients.

What are high-frequency ventilators used for?

High-frequency ventilators deliver very rapid breaths at low tidal volumes, often used in neonatal and pediatric care.

What is tidal volume (Vt)?

Tidal volume (Vt) is the amount of air delivered to the patient with each breath.

What is the typical tidal volume range for adults?

The typical tidal volume range is 6-10 ml/kg of ideal body weight for adults.

What does respiratory rate (RR) refer to?

Respiratory rate (RR) refers to the number of breaths delivered per minute.

What is the typical range for adult respiratory rate?

The typical range is 12-20 breaths per minute for adults.

What is peak inspiratory pressure (PIP)?

PIP is the maximum pressure applied to the airways during inhalation.

What is the purpose of adjusting PIP settings?

PIP settings are adjusted to ensure safe ventilation without causing barotrauma.

What does PEEP stand for and what is its function?

PEEP stands for Positive End-Expiratory Pressure, which maintains pressure in the airways at the end of expiration to keep alveoli open.

What is the typical range for PEEP?

The typical range is 5-15 cm H2O, depending on the patient's need for oxygenation.

What does FiO2 represent?

FiO2 represents the fraction of inspired oxygen, or the percentage of oxygen in the gas being delivered to the patient.

What is the typical range for FiO2?

The typical range for FiO2 is adjusted from 21% (room air) up to 100% based on oxygen saturation levels.

What is Volume Control (VC) in ventilation modes?

Volume Control (VC) delivers a set tidal volume with each breath.

What is Pressure Control (PC) in ventilation modes?

Pressure Control (PC) delivers breaths until a set pressure is reached, regardless of the tidal volume.

What does Assist-Control (A/C) mode do?

Assist-Control (A/C) mode allows patients to initiate breaths while ensuring a minimum number of breaths per minute.

What is Synchronized Intermittent Mandatory Ventilation (SIMV)?

SIMV is a combination of mandatory and spontaneous breaths, promoting patient-initiated breathing.