What is a nasal cannula? A nasal cannula is a device that gives you additional oxygen (supplemental oxygen or oxygen therapy) through your nose. It’s a thin, flexible tube that goes around your head and into your nose. There are two prongs that go inside your nostrils that deliver the oxygen.

Most cannulae can only provide oxygen at low flow rates—up to 5 litres per minute (L/min)—delivering an oxygen concentration of 28–44%. Rates above 5 L/min can result in discomfort to the patient, drying of the nasal passages, and possibly nose bleeds (epistaxis).

Oct 17, 2020 · Most people breathe through the nose, and it’s a common route for administering supplementary oxygen. This OnePager reviews nasal oxygen delivery devices, including conventional nasal cannula (NC), reservoir nasal cannula, and heated high-flow nasal cannula (HFNC). It also covers apneic oxygenation. Current version 1.0 (2020-10-17).

Nov 11, 2021 · What Is a Nasal Cannula? A nasal cannula is a medical device to provide supplemental oxygen therapy to people who have lower oxygen levels. There are two types of nasal cannulas: low flow...

Nov 13, 2023 · A nasal cannula is used to supply oxygen to a person who cannot get enough oxygen to sustain normal body functioning. It is commonly used for people with lung diseases like COPD or acute illness. The cannula connects to an oxygen source, such as an oxygen tank.

HFNC是指一种通过高流量鼻塞持续为患者提供可以调控并相对恒定吸氧浓度（21%~100%）、温度（31~37 ℃）和湿度的高流量（8~80 L/min）吸入气体的治疗方式。 该治疗设备主要包括空氧混合装置、湿化治疗仪、高流量鼻塞以及连接呼吸管路 [3]。 结合国内和国际通用命名习惯，本共识统一采用"经鼻高流量湿化氧疗"进行表述，英文简称为HFNC（图1）。 人类开始氧气治疗的历史可回溯到18世纪后叶，20世纪初即开始应用橡胶制作的鼻导管进行氧疗 [4]。 1987年美国研发了 …

Sep 1, 2021 · 经鼻高流量氧疗（high-flow nasal cannula oxygen therapy, HFNC）是一种通过无需密封的导管经鼻输入经过加温湿化的高流量混合气体的呼吸治疗方法。 大量研究表明HFNC可有效缓解呼吸困难，对轻中度呼吸衰竭患者有良好的临床疗效，且操作简便，具有良好的患者耐受性，临床应用越来越广泛。 目前，HFNC已与传统氧疗（conventional oxygen therapy, COT）、无创正压通气（noninvasive ventilation, NIV）及有创机械通气（invasive mechanical …

High-flow nasal cannula (HFNC) oxygen therapy comprises an air/oxygen blender, an active humidifier, a single heated circuit, and a nasal cannula. It delivers adequately heated and humidified medical gas at up to 60 L/min of flow and is considered ...

Unlike a facemask, also used to deliver oxygen, nasal cannulas let you eat and speak freely. They can be used in a hospital, at home, or during travel. A nasal cannula is a thin, flexible tube that hooks over your ears.

High-flow nasal oxygen (HFNO) is commonly used in acute respiratory failure. Acute hypoxemic respiratory failure is defined as an oxygen saturation below 88% or a baseline partial pressure of...