The purpose of this study was to investigate whether nocturnal hypoxia causes daytime blood pressure (BP) elevation. We hypothesized that overnight exposure to hypoxia leads the next morning to elevation in BP that outlasts the hypoxia stimulus. We studied the effect on BP of two consecutive night exposures to hypobaric hypoxia in 10 healthy normotensive subjects. During the hypoxia nights, sub...

Molar diffusion mechanism is generally considered to be the main physical process of gas transport at soil–atmosphere interface. However, advection in porous medium can considerably affect soil transport. Barometric pressure fluctuations caused by pumps one factors that affects mechanism. Most existing studies are overly focused on construction complex mathematical models and cannot exclude oth...

It has been suggested that the risk of rupture of intracranial aneurysms may be fostered by climatic drops in barometric pressure, as also occurs to passengers subjected to the air pressure settings inside aircraft cabins. We present two cases of flight-related aneurysmal SAH followed by intracerebral rebleeding in the cabin (case 1) and carotid dissection after landing (case 2). Management and...

Cosmic rays (CRs) have been studied extensively in the last century to understand processes universe as well solar system. In today's satellite era, although many observations are made from space, CR ground still viewed an important tool. These observations, however, mostly detect secondary cosmic (SCRs) such neutron, muon, and gamma. It is known that atmospheric pressure plays role SCR flux ob...

Higher levels of tourniquet pressure and higher pressure gradients beneath tourniquet cuffs are associated with a higher risk of nerve-related injury. Measurement of limb occlusion pressure can help to minimize tourniquet pressure levels and pressure gradients for individual patients and individual surgical procedures. Selective use of pneumatic, wider, and contoured tourniquet cuffs reduces to...