Final answer:
The time limit for a pneumatic tourniquet for upper extremity in adults varies depending on the specific procedure, but it is generally recommended to limit the inflation time to 120 minutes or less.
Step-by-step explanation:
The time limit for a pneumatic tourniquet for upper extremity in adults varies depending on the specific procedure being performed. However, the general guideline is to limit the inflation time to 120 minutes or less. Prolonged inflation time can lead to ischemia, or lack of blood flow, which can cause tissue damage and increase the risk of complications.
For example, during a simple hand surgery, the pneumatic tourniquet may be inflated for around 30 minutes. On the other hand, during a more complex shoulder surgery, the tourniquet may be used for up to 90 minutes.
It's important for healthcare professionals to closely monitor the inflation time and pressure to ensure patient safety and minimize the risk of complications.