* Uncontrolled decompression

* Uncontrolled decompression

* Uncontrolled decompression

Uncontrolled decompression refers to an unplanned drop in the pressure of a sealed system, such as an aircraft cabin, and typically results from human error, material fatigue, engineering failure, or impact, causing a pressure vessel to vent into its lower-pressure surroundings or fail to pressurize at all.

# redirect Uncontrolled decompression

Uncontrolled life-threatening bleeding may require Uterine artery embolization ( occlusion of the blood vessels supplying the uterus ), laparotomy ( surgical opening of the abdomen ), occasionally leading to hysterectomy ( removal of the uterus ) as a last resort.

* Uncontrolled secondary usage: Those who are granted access to patient information solely for the purpose of supporting primary care can exploit that permission for reasons not listed in the contract, such as research.

* July 19 – United Airlines Flight 232, a Douglas DC-10, suffers decompression in and catastrophic failure of its tail-mounted engine, knocking out all its flight controls.

Failures range from sudden, catastrophic loss of airframe integrity ( explosive decompression ) to slow leaks or equipment malfunctions that allow cabin pressure to drop undetected to levels that can lead to unconsciousness or severe performance degradation of the aircrew.

Melting can also occur due to a reduction in pressure by a process known as decompression melting.

Sony's ATRAC codec differs from uncompressed PCM in that it is a psychoacoustic lossy audio data reduction scheme and is such that the recorded signal does not require decompression on replay.

Scalability generally refers to a quality reduction achieved by manipulation of the bitstream or file ( without decompression and re-compression ).

At altitude, atmospheric pressure is lower than at sea level, so surfacing at the end of an altitude dive leads to a greater reduction in pressure and an increased risk of decompression sickness.

As the diver needs to be neutral at the end of the dive, particularly at shallow depths for obligatory or safety decompression stops, Sufficient ballast weight must be carried to allow for this reduction in weight of gas supply.

By not needing to return to the surface they can reduce the necessity for decompression ( gradual reduction of pressure ), required to avoid problems with nitrogen bubbles releasing from the bloodstream ( the bends, also known as caisson disease ).

Only in Israel decompression is used on all luggage to check for pressure sensor detonators.

A maximum oxygen partial pressure of 1. 4 bar for the active sectors of the dive, and 1. 6 bar for decompression stops is recommended by several recreational and technical diving certification agencies for open circuit, and 1. 2 bar or 1. 3 bar as maximum for the active sectors of a dive on closed circuit rebreather.

Lower pressure allows for greater mobility, but requires the suit occupant to breathe pure oxygen for a time before going into this lower pressure, to avoid decompression sickness.

In addition, and most importantly, the Aqua-Lung could be mounted on stronger and reliable air tanks holding up to 200 atmospheres ,< ref > Cousteau quickly describes the two Aqua-Lung prototypes used to shoot the film Épaves in 1943 Check here, on minute 3 ' 55 < nowiki ></ nowiki >, when Cousteau mentions his cylinders ' highest pressure ( in French ).</ ref > allowing extension of diving duration to more than an hour at significant depths ( including the needed time for decompression stops ).

The aircraft suffered an explosive decompression from an incorrectly repaired aft pressure bulkhead, which failed in mid flight and destroyed most of its vertical stabilizer, and severed all of the hydraulic lines, making the 747 virtually uncontrollable.

As men were working under pressures of up to 4 times normal air pressure, a decompression period of almost 2 hours was needed at the end of each shift to avoid the bends.

Recent accounts report Cosmonaut Leonov violated procedure by entering the airlock head-first, then became stuck sideways when he turned to close the outer hatch, forcing him to flirt with decompression sickness ( the “ bends ”) by lowering the suit pressure so he could bend to free himself.

Barotitis, a form of barotrauma, may occur when there is a substantial difference in air or water pressure between the outer inner and the inner ear, for example in a rapid ascent while scuba diving, or a sudden decompression of an aircraft at high altitude.

This decompression will relieve the pressure on the venules and lymphatic vessels, and will increase bloodflow throughout the muscle.

* August 22 – Far Eastern Air Transport Flight 103, a Boeing 737-222, suffers explosive decompression shortly after departure from Taipei Songshan Airport in Taipei, Taiwan, after severe corrosion leads to a pressure hull rupture.

The name comes from an analogy to diving, where decompression refers to a period of time spent by deep sea divers either in decompression chambers or at various depths on their way to the surface henceforth, gradually adjust to surface pressure in order to avoid the bends.

The most common of the modifications to decompression tables at altitude are the " Cross Corrections " which use a ratio of atmospheric pressure and sea level to that of the altitude to provide a conservative equivalent sea level depth.

The fully closed circuit rebreather is able to minimise the proportion of inert gases in the breathing mix, and therefore minimise the decompression requirements of the diver, by maintaining a specific and relatively high oxygen partial pressure ( ppO < sub > 2 </ sub >) at all depths.

This can offer a dramatic advantage at the end of deeper dives, where a diver can raise the partial pressure of oxygen somewhat at shallower depth, permitting shorter decompression times.

Where a person who is not in a pressure suit moves between environments of greatly different pressures, an airlock changes the pressure slowly to help with internal air cavity equalization and to prevent decompression sickness.

Dive computers address the same problem as decompression tables, but are able to perform a continuous calculation of the partial pressure of inert gases in the body based on the actual depth and time profile of the diver.

The chamber pressure was measured by a bourdon tube, calibrated to indicate decompression status.

The computer then uses the profile and a decompression algorithm to estimate the partial pressure of inert gases that has been dissolved in the diver's tissues.

Many dive computers are able to produce a safe decompression schedule for dives that take place at altitude, which requires a slower ascent than at sea level, because the computers measure the atmospheric pressure before the dive.

* List of notable decompression accidents and incidents

* List of notable decompression accidents and incidents

Most diving accidents or illnesses are related to the effect of depth / pressure on gases in the body ; examples are decompression sickness, nitrogen narcosis, oxygen toxicity, arterial gas embolism and CO < sub > 2 </ sub > retention.

Injuries caused by rapid decompression are called barotrauma, and are well known from scuba diving accidents.

Initially, HBOT was developed as a treatment for diving disorders involving bubbles of gas in the tissues, such as decompression sickness and gas embolism.

These surgeries include rhizotomy ( where select nerve fibers are destroyed to block pain ) and Microvascular decompression ( where the surgeon moves the vessels that are compressing the nerve away from it and places a soft cushion between the nerve and the vessels ).

Frangible bullets such as the Glaser Safety Slug are designed to ricochet less and be less likely to puncture the hull of an aircraft, which lessens the danger of decompression if the officer has to fire on an attacker.

Underwater divers can use PDAs to plan breathing gas mixtures and decompression schedules using software such as " V-Planner.

In technical diving, the diver may carry different equipment for different phases of the dive ; some breathing gas mixes may only be used at depth, such as trimix and others, such as pure oxygen, which only may be used during decompression stops in shallow water.

In 2003, British and Spanish scientists suggested in Nature that the effects of sonar trigger whale beachings and to signs that such whales have experienced decompression sickness.

* Filter out gas micro-bubbles occurring in the venous blood stream such as those created during decompression after underwater diving.

A paramedic has a high level of prehospital medical training and usually involves key skills not performed by technicians, often including cannulation ( and with it the ability to use a range of drugs to relieve pain, correct cardiac problems, and to assist with endotracheal intubation ), cardiac monitoring, tracheal intubation, needle decompression and other skills such as performing a cricothyrotomy.

Dr. Jaminet himself suffered a case of decompression sickness when he ascended to the surface in four minutes after spending almost three hours at a depth of 95 feet in a caisson, and his description of his own experience was the first such recorded.

Diving at Lake Tahoe is considered advanced due to the increased risk of decompression sickness ( DCS ) while diving at such a high altitude.

They include compression and decompression of data block by block using zlib at sending and receiving ends, and support for protocols such as ssh that enables encrypted transmission of compressed and efficient differential data using rsync algorithm.

The inert gas may have effects on the diver, but these are thought to be mostly physical effects, such as tissue damage caused by bubbles in decompression sickness.

Alternatively, some trimix divers inflate their suits from a decompression cylinder containing a nitrox blend ( all such decompression blends, including pure oxygen, have essentially the same thermal conductivity as air ).

The final result of such a run-away inversion is a diver rising all the way to the surface, feet first, in an uncontrolled ascent that is too rapid for decompression safety.

This is due in part to the specialized equipment ( such as rebreathers, diver propulsion vehicles and dry suits ) and skill sets required, and in part because of the high potential risks, including decompression sickness and drowning.

With the establishment of technical diving, the usage of mixed gases — such as trimix for bottom gas, and nitrox and oxygen for decompression — reduces the margin for error.

The decompression meter was distributed directly by SOS and also by scuba diving equipment firms such as Scubapro and Cressi.

Some algorithms may not be able to account for age, previous injury, ambient temperature, body type, alcohol consumption, dehydration, and other factors such as patent foramen ovale, when determining the decompression requirements, while others may attempt to compensate for temperature and workload by having sensors that monitor ambient temperature and cylinder pressure.

Some dive computers are able to calculate decompression schedules for breathing gases other than air, such as nitrox, pure oxygen, trimix or heliox.

A diver wishing to reduce the risk of decompression sickness can take a number of precautionary measures such as:

** Use of group equipment such as diving shots and decompression trapezes

Barotrauma typically occurs to air spaces within a body when that body moves to or from a higher pressure environment, such as when a SCUBA diver, a free-diving diver or an airplane passenger ascends or descends, or during uncontrolled decompression of a pressure vessel.

For example, in some circles in Europe, a red buoy indicates normal decompression and a yellow buoy indicates a problem, such as shortage of gas, that the surface support should investigate and resolve.