Risk
While needlestick injuries have the potential of transferring bacteria, protozoa, viruses and prions, from a practical point the transmission of the hepatitis B and hepatitis C viruses and the human immunodeficiency virus (HIV) is important. It is estimated that annually as a consequence there are 66,000 infections with HBV, 16,000 with HCV, and 1,000 with HIV worldwide. In addition, a needlestick injury may lead to significant stress and anxiety for the affected injured person. Taking care of a needlestick injury is costly, estimated to be about $2,500 in the short term in the US.
Hepatitis B carries the greatest risk of transmission, with 37 to 62% of exposed workers eventually showing seroconversion and 22 to 31% showing clinical Hepatitis B infection. The hepatitis C transmission rate has been reported at 1.8%, but newer, larger surveys have shown only a 0.5% transmission rate. The overall risk of HIV infection after percutaneous exposure to HIV-infected material in the health care setting is 0.3%.
The specific risk of a single injury depends on a number of factors when the patients harbor the virus of concern. Injuries with a hollow-bore needle, deep penetration, visible blood on the needle, a needle that was located in a deep artery or vein, or with blood from terminally ill patients are known to increase the risk for HIV infection.
Estimates of the risk of a single injury indicate a risk of 300 HBV infections (30% risk), 30 HCV infection (3% risk) and 3 HIV infections (0.3% risk) per 1,000 respective exposures.
While the vast majority of needlestick injuries occur when the source-person does not carry the HBV, HCV, and HIV and thus do not carry a risk of infection, these events nevertheless cause stress and anxiety and signal a breakdown in protocol and prevention.
Read more about this topic: Needlestick Injury
Famous quotes containing the word risk:
“Anyone who takes himself too seriously always runs the risk of looking ridiculous; anyone who can consistently laugh at himself does not.”
—Václav Havel (b. 1936)
“If you love the good thing vitally, enough to give up for it all that one must give up, then you must hate the cheap thing just as hard. I tell you, there is such a thing as creative hate! A contempt that drives you through fire, makes you risk everything and lose everything, makes you a long sight better than you ever knew you could be.”
—Willa Cather (1873–1947)
“A monarch must sometimes rule even himself: he who wants everything must risk very little.”
—Pierre Corneille (1606–1684)