PhlebotomyCâu 60 / 100
To avoid hemoconcentration and inaccurate results, a tourniquet should not remain in place longer than:
a.5 minutes
b.4 minutes
c.3 minutes
d.1 minute
Giải thích
A tourniquet should be left on for no longer than 1 minute to prevent hemoconcentration, which can falsely elevate certain results such as potassium and protein. If more time is needed to find a vein, the tourniquet is released and reapplied after two minutes. It is loosened as soon as blood flow is established.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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