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The danger triangle of the face consists of the area from the corners of the mouth to the bridge of the nose, including the nose and maxilla. [1] [2]: 345–346 Due to the special nature of the blood supply to the human nose and surrounding area, it is possible for retrograde infection from the nasal area to spread to the brain, causing cavernous sinus thrombosis, meningitis, or brain abscess.
Obstruction to the sinus ducts leading to pressure differences between the interior of the sinus and the external pressure. [33] Do not dive with conditions such as the common cold or allergies that cause nasal congestion. [33] Localised low pressure in the diving mask. Mask squeeze: Squeeze damage to blood vessels around the eyes. [34]
Sinusitis, also known as rhinosinusitis, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus, nasal congestion, facial congestion, facial pain, facial pressure, loss of smell, or fever.
Last year there were 57 unprovoked shark bites on humans and experts say these incidents may be increasing due to the impacts of global warming and habitat damage, writes Faiza Saqib
Just a single face mask, according to a study in Environmental Advances, can release as many as 173,000 microfibers per day into the seas. And a recent National Geographic report cites a far ...
The scuba mask (half-mask) is equalised during descent by periodically exhaling through the nose. During ascent it will automatically equalise by leaking excess air round the edges. A helmet or full face mask will automatically equalise as any pressure differential will either vent through the exhaust valve or open the demand valve and release ...
Marine scientists Mike Barron and Dylan Irion created Cape RADD to engage both scientists and citizens in conservation around Cape Town. Now, they’re using AI to help track and protect the ...
The pressure difference causes the mucosal lining of the sinuses to become swollen and submucosal bleeding follows with further difficulties ventilating the sinus, especially if the orifices are involved. Ultimately fluid or blood will fill the space. In most cases of sinus barotrauma, localized pain to the frontal area is the predominant symptom.