Pulse Dose Delivery vs. Continuous Flow

Pulse Dose Delivery vs. Continuous Flow

What is the difference between pulse dose delivery and continuous flow in portable oxygen concentrators?

Both pulse-flow and continuous-flow portable oxygen concentrators (POC) provide supplemental oxygen to users who require it, but they differ in their delivery methods and suitability for different needs.

Pulse flow, also known as on-demand or intermittent flow (IF), delivers oxygen in short bursts or pulses when you inhale. It is designed to match your breathing pattern and conserve oxygen, making it more efficient for portable use and for individuals with lower oxygen requirements or active lifestyles. Pulse flow is generally used for portability exclusively because it conserves oxygen to extend battery life or activity time.

Continuous flow (CF), on the other hand, delivers a constant and steady flow of oxygen regardless of your breathing pattern. It is typically used for individuals with higher oxygen requirements or those who need a continuous supply of oxygen, such as during sleep or rest at home.

differences between pulse and continuous flow in portable oxygen concentrator

Here's a breakdown of the key differences:

Pulse Dose POC:

  • Delivery: 

Deliver oxygen in bursts, triggered by your inhalation detected through a nasal cannula sensor.

  • Flow Rate: 

Oxygen is delivered in milliliters per breath (ml/breath), with settings typically ranging from 15ml/breath to 67ml/breath.

  • Benefits: 

  1. Lighter and more portable: Due to smaller size and lower battery consumption.
  2. Quieter operation: Less noisy compared to continuous flow models.
  3. More energy-efficient: Saves battery life, allowing for longer use on a single charge.

  • Drawbacks: 

  1. May not be suitable for all users: Individuals with severe respiratory conditions or specific oxygen delivery requirements might need continuous flow.
  2. Sensitivity to breathing patterns: Erratic or shallow breathing can affect oxygen delivery accuracy.

Pulse Dose POC delivers oxygen in short bursts or pulses when you inhale and stores oxygen when you exhale. This reduces oxygen waste and enhances its efficiency for portable use.

Continuous-flow POC:

  • Delivery: 

Deliver oxygen continuously, regardless of your breathing pattern, at a set flow rate.

  • Flow Rate: 

Oxygen is delivered in liters per minute (LPM), 5 LPM for example.

  • Benefits: 

  1. Precise and consistent oxygen delivery: Suitable for users with critical oxygen needs or specific flow requirements.
  2. Unaffected by breathing patterns: Ensures consistent oxygen delivery even with shallow or irregular breathing.

  • Drawbacks: 

  1. Bulkier and heavier: Larger size and higher battery consumption limit portability.
  2. Louder operation: Can be noisier than pulse-flow models.
  3. Less energy-efficient: Requires more frequent battery charging.

Comparing Pulse Flow with Continuous Flow

Pulse Dose Oxygen Delivery

Continuous Flow

Oxygen Delivery Type

Pulses, or segment

Uninterrupted, steady stream

Flow Rate

Milliliters per breath (ml/breath)

Liters per minute (LPM)

Sensitivity to Breathing Patterns

Synchronize with user's breathing

Consistent regardless of breathing patterns

Timing of Oxygen Delivery

Only when the user is inhaling

Continuously

Energy Efficiency

Energy-efficient

Energy-intensive

Portability

Lightweight, with long-lasting battery and a carry bag, easy to carry

Larger models with wheels, less portable

Usage Suitability

Active/daytime use, outdoor use

High-flow needs, sleep

Suitable Group

  • Chronic respiratory patients
  • Breathless elderly individuals
  • Sleep apnea sufferers
  • End-of-life care patients
  • Severe asthma/COPD patients

Situation

Outdoor

Home, hospitals, nursing home

Application

  • While walking, hiking, driving in the car
  • For plateau travel
  • During social outings
  • When attending events like concerts, sports games, etc.
  • During mild to moderate exercise routines

  • While sleeping
  • While performing sedentary activities (reading, watching TV)
  • During meals
  • While doing seatting exercises

Choose the Right POC

The best type of POC for you depends on your individual needs and medical condition. Consulting your doctor is crucial to determine the most suitable option based on factors like:

  • Severity of your respiratory condition
  • Oxygen flow rate requirements
  • Breathing patterns
  • Activity level and lifestyle
  • Portability needs
  • Budget

By understanding the differences between pulse-flow and continuous-flow POCs and consulting your doctor, you can make an informed decision that optimizes your oxygen therapy and improves your quality of life.

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Wellue's Product Recommendation

Pulse Dose Portable Oxygen Conentartor with 5 Settings

$1,699.00

5L Home Stationary Continuous-flow Oxygen Concentrator

$545.00

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