2-3 minutes
According to CLSI the tourniquet should not be left on for more than a minute. If a suitable vein has not been found, remove the tourniquet, leave it off for two minutes, then reapply the tourniquet to look for suitable veins and/or perform the venipuncture.
I most cases a tourniquet should not be taken off once applied until the patient is in a surgical setting with a trauma physician.
Because if its left longer, it can cause hemoconcentration
An occasional patient with hepatitis A will remain jaundiced for a month, two months or even longer, but eventually the jaundice will pass.
what is the maximum amount of time a tourniquet should left on
how long should a tourniquet stay on a patients arm:There is no clearcut rule as to how long a tourniquet may be inflated safely, although various investigators have addressed effects of ischemia on muscle and nerve to define a relatively "safe" period of tourniquet hemostasis. In practice, safe tourniquet inflation time depends greatly on the patient's anatomy, age, physical status, and the vascular supply to the extremity. Unless instructed otherwise, report to the surgeon when 60 minutes of tourniquet time has elapsed. There is general agreement that for reasonably healthy adults, 90 minutes should not be exceeded without releasing the tourniquet for a short time.
what is the maximum amount of time a tourniquet should left on
Once you apply a tourniquet, you should never loosen it until you are ready to remove it.
no longer than a minute and a half to two minutes once you get the needle into the vein you should tell the person to relax the fist first then remove the tourniquet if left on too long you can obliterate the blood supply and cause tissue damage
never
The sun is expect to remain stable for another three billion years.
The sun is expect to remain stable for another three billion years.