Intrapulmonary Shunts: Another Cause for a Right-Left Shunt

Many of us are familiar with the concept of PFO’s and how they may be responsible for allowing bubbles to cross from the venous (pulmonary) to the arterial side. When this occurs, we are talking about a Right-Left Shunt, RLS and a potentially increased risk for developing Type II DCS. There are other sources that,

Many of us are familiar with the concept of PFO’s and how they may be responsible for allowing bubbles to cross from the venous (pulmonary) to the arterial side. When this occurs, we are talking about a Right-Left Shunt, RLS and a potentially increased risk for developing Type II DCS. There are ot...

August 26, 2015   Category: Business, Rebreather Diving

Because rocket fuel is too expensive

“Because rocket fu​​el is too expensive.” This was one of the reasons that Add Helium Staff Instructor Robert Johnson cited for his interest in rebreathers. He wanted to go where few people had gone and see something amazing. Talking about space, he said, “Look how far you would have to go before you get to,

“Because rocket fu​​el is too expensive.” This was one of the reasons that Add Helium Staff Instructor Robert Johnson cited for his interest in rebreathers. He wanted to go where few people had gone and see something amazing. Talking about space, he said, “Look how far you woul...

July 21, 2015   Category: Business, Rebreather Diving

Oxygen Toxicity: Potential New Method of Prevention

The possibility of developing oxygen toxicity remains a concern for us deco and Nitrox divers. Although the exact mechanism is still under debate, the primary theory is that too much  oxygen over too much time can induces seizures.   Research in neuroscience might provide us with new insights to reduce the risk of oxygen toxicity.,

The possibility of developing oxygen toxicity remains a concern for us deco and Nitrox divers. Although the exact mechanism is still under debate, the primary theory is that too much  oxygen over too much time can induces seizures.   Research in neuroscience might provide us with new insights ...

July 21, 2015   Category: Uncategorized

Does Pre-breathing your rebreather matter?

Training agencies and rebreather manufacturers have advocated pre-breathing the rebreather prior to diving. The rationale has been that CO2 bypass and scrubber faults can be detected prior to jumping into the water. As one instructor told me: “Better to pass out on the boat deck than underwater”. This practice appears to have common sense but,

Training agencies and rebreather manufacturers have advocated pre-breathing the rebreather prior to diving. The rationale has been that CO2 bypass and scrubber faults can be detected prior to jumping into the water. As one instructor told me: “Better to pass out on the boat deck than underwater”...

July 16, 2015   Category: Uncategorized

Coming Full Circle: Diving the O2ptima…again.

By October of 2007, I had become an Optima diver. Trading in my doubles for a rebreather was a careful decision; one involving research and asking questions. I certainly did not want to buy a “garage made” rebreather and Dive Rite, a major manufacturer of technical diving equipment, was presenting a “factory made” rebreather. Eventually,,

By October of 2007, I had become an Optima diver. Trading in my doubles for a rebreather was a careful decision; one involving research and asking questions. I certainly did not want to buy a “garage made” rebreather and Dive Rite, a major manufacturer of technical diving equipment, was presenti...

June 15, 2015   Category: Business, Rebreather Diving

Migraines and DCS

Getting into diving with a history of migraines? Have you been diving but are developing migraines? Is this something a diver needs to why worry about? This article explains the relationship between migraines and the presence of a right-to-left shunt. We know that the presence of PFO’s (patent foramen ovale) increases the risk of type,

Getting into diving with a history of migraines? Have you been diving but are developing migraines? Is this something a diver needs to why worry about? This article explains the relationship between migraines and the presence of a right-to-left shunt. We know that the presence of PFO’s (patent for...

May 15, 2015   Category: Uncategorized

Rebreather Myths

In today’s world, navigating available rebreather information can be confusing, frustrating, and misleading. Consumers enquiring about rebreathers are often surprised by how disconnected the industry is. Over the years the Add Helium staff has had the pleasure of speaking with many people that wish to purchase a rebreather. Usually, we are not the first rebreather,

In today’s world, navigating available rebreather information can be confusing, frustrating, and misleading. Consumers enquiring about rebreathers are often surprised by how disconnected the industry is. Over the years the Add Helium staff has had the pleasure of speaking with many people that wis...

March 19, 2015   Category: Business, Rebreather Diving

Obesity, Fitness and Diving

It is not a secret that obesity is a growing problem in the United States. Obesity is getting daily exposure on the TV networks, radio stations, newspapers, and magazines. While standing in the supermarket checkout line, one is tempted to read magazine headlines promising wonder-diets and exercise routines to transform the overweight in only a,

It is not a secret that obesity is a growing problem in the United States. Obesity is getting daily exposure on the TV networks, radio stations, newspapers, and magazines. While standing in the supermarket checkout line, one is tempted to read magazine headlines promising wonder-diets and exercise r...

January 13, 2015   Category: Business, Rebreather Diving