Pulse Flow vs. Continuous Flow

Oxygen therapy is an essential treatment for individuals with respiratory conditions such as Chronic Obstructive Pulmonary Disease (COPD), pulmonary fibrosis, or severe asthma. Oxygen concentrators are the devices used to deliver this life-saving oxygen, and they come in two main types: pulse flow and continuous flow. Choosing between these depends on the user’s oxygen needs and lifestyle. Here’s a closer look at both systems:

Pulse Flow Oxygen Delivery

- How It Works: Pulse flow delivers oxygen in small bursts, also called boluses, which are synchronized with the user's inhalation. It does not deliver oxygen during exhalation, making it more efficient in conserving oxygen.

- Device Detection: These devices are equipped with sensors that detect when the user begins to inhale and then deliver the oxygen pulse.

- Oxygen Conservation: This system reduces wasted oxygen during exhalation and in between breaths, which is especially useful for portable oxygen concentrators (POCs) where conserving battery life and oxygen supply is crucial.

- Portability Advantage: Pulse flow concentrators are smaller, lighter, and easier to carry around, making them ideal for active users who are often on the go. Most portable oxygen concentrators rely on pulse flow because it allows for smaller battery sizes and lighter designs.

- Suitability: Pulse flow is ideal for patients who need oxygen primarily during exertion, like walking, exercising, or daily activities. However, some individuals may not tolerate pulse flow as well during sleep, where regular and deeper breaths are necessary.

Pulse Flow Machines by RAAROXY

MAF052-RAAROXY 5L Pulse Flow Portable Oxygen Concentrator

Continuous Flow Oxygen Delivery

- How It Works: Continuous flow provides a steady and uninterrupted flow of oxygen at a pre-set rate, regardless of whether the user is inhaling or exhaling. This ensures that oxygen is always available in the airway for immediate use.

- Constant Oxygen Supply: Continuous flow is essential for users who have higher oxygen needs or those who have conditions that require a stable oxygen supply throughout the day and night.

- Less Portable: Continuous flow concentrators tend to be larger, heavier, and usually require more power. Most home oxygen concentrators and some heavier portable devices offer this type of delivery.

- Suitability: Continuous flow is often necessary for individuals who require oxygen during sleep (nocturnal oxygen therapy), as it can provide a constant level of oxygen regardless of breathing patterns. It’s also suitable for those who need higher oxygen levels.

Continuous Flow Machines by RAAROXY

RS01-RAAROXY 3L/min Portable Oxygen Concentrator

Which is Right for You?

The decision between pulse and continuous flow depends largely on how much oxygen you require and your lifestyle. If you are active, travel frequently, and need oxygen intermittently, a pulse flow device may be ideal. On the other hand, if your oxygen needs are more consistent or if you need oxygen while sleeping, a continuous flow concentrator may be more appropriate.