25 Ağustos 2009 Salı

Golden hour (medicine)

In emergency medicine, the golden hour refers to a time period lasting from a few minutes to several hours following traumatic injury being sustained by a casualty, during which there is the highest likelihood that prompt medical treatment will prevent death.[1] It is well established that the victim's chances of survival are greatest if they receive care within a short period of time after a severe injury. Some have come to use the term to refer to the core principle of rapid intervention in trauma cases, rather than the narrow meaning of a critical one-hour time period.

General concept

In cases of severe trauma, especially internal bleeding, nothing can replace surgical intervention.[citation needed] Complications such as shock may occur if the patient is not managed appropriately and expeditiously. It therefore becomes a priority to transport patients suffering from severe trauma as fast as possible to specialists, most often found at a hospital trauma center, for definitive treatment. Because some injuries can cause a trauma patient to decompensate extremely rapidly, the lag time between injury and treatment should ideally be kept to a bare minimum; over time, this lag time has come to be specified as a now-standard time frame of no more than 60 minutes, after which time the survival rate for traumatic patients is alleged to fall off dramatically.

Origins of the term

The late Dr. R Adams Cowley is credited with promoting this concept, first in his capacity as a military surgeon and later as head of the University of Maryland Shock Trauma Center.[2][3] The concept of the "Golden Hour" may have been derived from French military World War I data.[4] The R Adams Cowley Shock Trauma Center section of the University of Maryland Medical Center's website quotes Cowley as saying, "There is a golden hour between life and death. If you are critically injured you have less than 60 minutes to survive. You might not die right then; it may be three days or two weeks later -- but something has happened in your body that is irreparable."[3]
Controversy

While most medical professionals agree that delays in definitive care are undesirable, recent peer reviewed literature casts doubt on the validity of the 'golden hour' as it appears to lack a scientific basis. Dr. Bryan Bledsoe, an outspoken critic of the golden hour and other EMS "myths" like critical incident stress management, has indicated that the peer reviewed medical literature does not demonstrate any "magical time" for saving critical patients.[5]

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