Liter Flows

  • Smallest Continuous Flow Portable Oxygen Concentrator

    In the world of portable oxygen concentrators, smaller is always better. The smallest continuous flow portable oxygen concentrator is the SeQual eQuinox. It has all the same settings and features as the Sequal Eclipse, but weighs 3 pounds less and is 5 inches shorter.

    Its small size, but still having the capacity to put out up to 3 LPM (liters per minute) of continuous flow oxygen, makes it remarkable. It's the smallest continuous flow portable oxygen concentrator currently on the market. It's also proof of the swift advancements of medical technology, that can be enjoyed by patients outside of a clinical setting.

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  • High Flow Stationary Oxygen Concentrators

    Sometimes an oxygen concentrator with a high flow is necessary to meet a patient's oxygen requirements. A higher setting is often needed for more severe cases of low oxygen in the blood stream. When someone with healthy lungs takes a breath, they are really only breathing in 21% oxygen in the air. For someone with moderate to severe COPD, that percent will be much lower.

    "High flow" Units have settings that go as high as 10 LPM (liters per minute) of continuous flow. Some can only go up to 5 LPM, while the highest settings that POCs have are 3 LPM and 196 ml/min of pulse dose oxygen.

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  • Summary of Oxygen Concentrator Liter Flows

    The oxygen provided by home and portable concentrators is measured in LPM (liters per minute) for continuous flow or the equivalent thereof in ml/min (milliliters per minute) in pulse dose oxygen. If you require oxygen therapy, your doctor will prescribe you a given oxygen flow rate such as 2 liters per minute. An oxygen flow rate of 2 LPM means the patient will have 2 liters of oxygen flowing into their nostrils over a period of 1 minute. Oxygen prescriptions generally run from 1 liter per minute to 10 liters per minute with 70% of those patients being prescribed 2 liters or less.

    Continuous flow oxygen always flows from the cannula and never stops until the unit is turned off. Pulse dose oxygen is released in puffs of air, often referred to as a "bollus". Many portable models only have pulse dose settings, while some also offer continuous flow in lower settings.

    Below is a summary of various liter flows for home and portable oxygen machines.

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