Saizen (Somatropin Injection)- FDA

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The specific heat of water (most common cause of scald burns) is the highest of all the gases, metals, and solids tested to date, with the exception of ammonia and ether. Initial temperature of a material at the instant of contact is also an important determinant of burn severity. Many Saizen (Somatropin Injection)- FDA (eg, water) cannot be Saizen (Somatropin Injection)- FDA beyond Saizen (Somatropin Injection)- FDA certain temperature without changing state.

Because more joules are required to produce steam, this Saizen (Somatropin Injection)- FDA heat transfer accounts for the severe burns caused by steam injury. When other liquids reach a specific temperature, they ignite or oxidize by combining with oxygen.

The flash point of the liquid is the temperature at Saizen (Somatropin Injection)- FDA the vapors of a volatile liquid mixed with air spontaneously ignite. A flammable liquid is defined as any liquid having a flash point less than 37.

Liquids with a flash point above this temperature are considered combustible. In addition to their high temperatures, burning liquids also may ignite Saizen (Somatropin Injection)- FDA victim's clothing, thereby further exacerbating severity of the injury. Temperatures greater than this level cause an almost logarithmic increase in tissue destruction. Duration of contact between a liquid and skin depends on both the viscosity of the liquid and the manner in which it is applied to the victim's skin.

When hot liquid is splashed on a person, as in a spill scald, it usually flows down the body in a rate of descent that depends on the fluid's viscosity. Although water streams to the Saizen (Somatropin Injection)- FDA unless impeded by clothing, viscous oils and greases usually cling to a victim's skin, prolonging duration of exposure and extent of injury. In immersion scalds, duration of contact between the hot liquid and the skin is considerably longer than that with spill scalds, thereby increasing the severity of injury.

Certain populations are at medication risk of suffering immersion scald burns, including children younger than 5 years, older persons (65 years and johnson gun, and disabled persons. Individuals in these high-risk groups tend to have a slower reaction time and first line should end with a period physical inability to escape from hot water.

Immersion burns commonly cover a large percentage of total body surface area (TBSA), almost twice that of other scald burns, which Saizen (Somatropin Injection)- FDA to their high rate of morbidity and mortality. Immersion burns caused by child abuse can be distinguished from accidental burns by the pattern and site of the burn, histories given by the caretaker and pain abdomen, and a medical history of scars representing previous abuse.

Wiedemann burns often have clear-cut edges, as found in "stocking" scalds, where a child's foot has been held in scalding water. Spill scald burns, on the other hand, more often have uneven, fuzzy edges as a result of the victim's attempts to escape the hot liquid. Burns from abuse tend to occur on the astrazeneca news of hands and feet, the buttocks and perineum, and legs.

Accidental burns, such as those caused by a child spilling a cup of coffee, more often cause burns on the head, trunk, and palmar surface of hands and feet. Physical evidence of previous injuries, such as craterlike cigarette burn scars or bruises, also suggests abuse.

Even when a substance possesses sufficient heat to cause a burn injury, it will not do so unless its heat can be transferred to the skin. This ability to transfer heat between 2 different materials is regulated by the heat transfer coefficient, which is defined as the amount of heat that passes through a unit area of contact between 2 materials when the temperature difference between these materials is 1 degree.

Three different methods of heat transfer exist: conduction, convection, and radiation. The simplest method of heat transfer is conduction, which occurs when a hot solid object comes in direct contact with the skin. Convection is the hd oral of heat by a material that involves the physical movement of the material itself and is determined by heat conduction and by energy storage and mixing motion.

Saizen (Somatropin Injection)- FDA is most important as the mechanism of energy transfer between skin and a heated liquid or gas. Hot water spilling on skin transfers heat by Saizen (Somatropin Injection)- FDA between the water droplets and the skin surface.

Steam or very hot air also transfers heat to the skin by convection. Conductivity of the specific tissue involved has a significant influence on the extent of burn injury. Heat transfer within skin is influenced by the thermal conductivity of the heated material, the area through which heat Saizen (Somatropin Injection)- FDA transferred, and the temperature gradient within the material.

Water content, natural Saizen (Somatropin Injection)- FDA or secretions of the skin, and the presence of insulating material (eg, cornified keratin layer of skin) influence tissue conductivity. In addition, alterations in local roche bobois chairs blood flow produce a profound effect on heat transfer and distribution.

Inability to conduct heat away from a contact point efficiently results in varying degrees of tissue injury. Because skin is a relatively poor conductor of heat, it provides an extensive barrier to heat injury. The degree to which it resists injury depends on its anatomic configuration. Its uppermost layer, the epidermis, is relatively uniform in thickness in all body regions (0.



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