High-frequency ventilation
High-frequency ventilation (HFV) is a type of mechanical ventilation that utilizes a rapid rate of ventilation to assist in the respiratory process.
Pronunciation
High-frequency ventilation is pronounced as /haɪ ˈfriːkwənsi ˌvɛntɪˈleɪʃən/.
Etymology
The term "high-frequency ventilation" is derived from the English language. "High-frequency" refers to the rapid rate of ventilation, while "ventilation" refers to the process of moving air in and out of the lungs.
Definition
High-frequency ventilation is a type of mechanical ventilation that uses a respiratory rate greater than four times the normal value. It is typically used in critically ill patients with acute respiratory distress syndrome (ARDS), neonates, and during certain surgical procedures.
Types of High-frequency ventilation
There are three types of high-frequency ventilation:
1. High-frequency oscillatory ventilation (HFOV): This type of HFV uses a constant distending pressure with superimposed oscillations at high frequencies.
2. High-frequency jet ventilation (HFJV): This type of HFV uses small rapid bursts of gas into the airway.
3. High-frequency flow interruption (HFFI): This type of HFV uses a high flow rate of gas that is intermittently interrupted.
Indications
High-frequency ventilation is used in the following conditions:
- Acute respiratory distress syndrome (ARDS)
- Neonatal respiratory distress syndrome
- During certain surgical procedures
Contraindications
High-frequency ventilation is contraindicated in the following conditions:
- Severe air leak syndrome
- Uncontrolled pneumothorax
Related Terms
- Mechanical ventilation
- Acute respiratory distress syndrome
- Neonatal respiratory distress syndrome
- High-frequency oscillatory ventilation
- High-frequency jet ventilation
- High-frequency flow interruption
External links
- Medical encyclopedia article on High-frequency ventilation
- Wikipedia's article - High-frequency ventilation
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