Medical & Fitness

Larger spleen enables Bajau to remain underwater longer

The Bajau are an indigenous people in parts of Indonesia renowned for their breath-holding ability when diving for food. They have been known to dive up to 70 metres using nothing more than a set of weights and a pair of wooden goggles.

Previously, scientists have speculated on whether dive capacity is related to spleen size, though no formal studies have been done on humans on a genetic level.

A peek inside a decompression chamber at a hospital (file photo)
A peek inside a decompression chamber at a hospital (file photo)

Lack of deco chamber in Pensacola concern dive ops and tourism

Although Visit Pensacola promotes the Oriskany dive site and Florida Panhandle Shipwreck Trail, it has not been made aware of the safety concerns rover the region's lack of hyperbaric chambers to treat decompression sickness Nicole Stacey, spokeswoman for Visit Pensacola, told Pensacola News Journal on Thursday.

She said Visit Pensacola was not involved in any effort to try to improve emergency treatment options for divers and would rely on the diving industry and those professionals in the area to remedy the situation.

Researchers use squid ink to diagnose gum disease

To diagnose gum disease, dentists insert a thin metal probe between the tooth and gum to measure the amount of gum that has shrunk back from the tooth. The depth to which the tool can be inserted indicates the severity of the gum disease.

Apart from being invasive and uncomfortable, this method of diagnosis is sometimes painful for the patient. In addition, the measurements are viable, as the probe can measure only one portion of the tooth at a time.

Enter Jesse Jokerst.

DDRC launches diving ear survey

Ear health problems are one of the most commonly reported issues by divers. Problems can range from a relatively simple condition, for example, “swimmers ear,” to a more serious condition such as barotrauma, which can result in lasting damage to the ear.

Currently, anonymous field data is sparse, therefore Devon-based DDRC is hoping to find out what type of ear problems are most frequently encountered whilst diving if any medical advice was obtained; and if not, what was the outcome.

Management of decompression stress

World-renowned diving medicine expert Dr Neal Pollock gave everyone a lot to think about with his talk on the thoughtful management of decompression stress.

Neal looked at the many factors that can alter decompression stress and the practical strategies all divers can use to optimise decompression safety.

“It is increasingly common for divers to rely on dive computers for their decompression safety. Dive computers do not yet measure or integrate a multitude of factors that can alter decompression stress.”- Dr Neal Pollock.

A high proportion of recreational divers may experience dental symptoms during a dive.

Diving could be bad for your teeth

The lead of the pilot study, Vinisha Ranna, who is also a keen scuba diver, became interested in the problem after she experienced it herself. In her case it manifested as a squeezing sensation in the teeth, known as barodontalgia

In order to see just how common and severe this problem is, she distributed a questionnaire through social media platforms dedicated to scuba diving and collected data from 100 scuba diving enthusiasts. A substantial number replied they experienced symptoms that range from tooth, jaw and gum pain to loosened crowns and broken dental fillings.

Lead author Vinisha Ranna, BDS, swims near underwater wreckage in Sri Lanka.

Nearly half of divers experience dental problems

Due to the constant jaw clenching and fluctuations in the atmospheric pressure underwater, divers may experience symptoms ranging from tooth, jaw and gum pain to loosened crowns and broken dental fillings. Recreational divers should consult their dentist before diving if they recently received dental care, said lead author Vinisha Ranna, BDS, a student in the UB School of Dental Medicine.

Heat the best option for treating jellyfish stings

Jellyfish stings: Hot water better than ice

After combing through more than 2,000 articles and conducting a systematic review of the evidence for the use of heat or ice in the treatment of cnidarian envenomations, the team concluded that the majority of studies to date support the use of hot-water immersion for pain relief and improved health outcomes.