High pressure injection injury
High-pressure injection injuries cause severe internal damage despite minor initial wounds.
A high pressure injection injury is an injury caused by the accidental or deliberate injection of substances such as oil, grease, diesel fuel, gasoline, solvents, water, liquified plastic, or air into the body under high pressure. These injuries most commonly occur from accidents with grease guns, paint sprayers, and pressure washers, as well as from working on diesel and gasoline engine fuel injection systems or pinhole leaks in pressurized hydraulic lines. Although the initial wound often appears minor, the unseen internal damage can be severe, and delay in surgical treatment frequently leads to amputation or death.
- Causes
- Accidents with grease guns, paint sprayers, pressure washers, fuel injection systems, hydraulic line leaks, and deliberate self-injection
- Typical pressure
- 2000 to 12000 psi (ejection pressure of 100 psi sufficient to penetrate skin)
- Most injected substances
- Paints, paint solvents, grease, fuel oils (diesel, paraffin, gasoline), also water, air, cement, animal vaccines
- Frequency
- Approximately one in 600 injuries presenting to a hospital
- Demographics
- Mostly affects young men in workplace settings
Lore & Background
High pressure injection injuries are rare but serious, with an estimated frequency of one in 600 hospital-presenting injuries. The majority of cases involve young men and are related to workplace accidents. Most injuries result from inexperience with high-pressure equipment, improper use, inadequate training, negligence, exhaustion at the end of a shift, or equipment rupture. The substances most frequently injected include paints, paint solvents, grease, and fuel oils, though reports also exist of water, air, cement, and animal vaccine injections.
Reader's Guide
The significance of high pressure injection injuries lies in their deceptive presentation: a small, often painless puncture wound can mask extensive internal damage. Because hydraulic fluids and organic solvents are highly toxic, and because even water or air can cause compartment syndrome leading to cell death, prompt surgical intervention is critical. Delay in treatment frequently results in amputation or death. Initial management includes analgesia, systemic prophylactic antibiotics, limb elevation, and tetanus prophylaxis, while avoiding digital blocks and ice. Only injections of chicken vaccine, air, or water may qualify for nonsurgical treatment; surgical decompression is required for high-pressure water injuries only if compartment syndrome develops. The injury's rarity and benign appearance often cause patients to postpone seeking care, worsening outcomes.
Did You Know?
- Ejection pressures of only 100 psi are sufficient to penetrate human skin.
- There is at least one known case of deliberate self-injection with a grease gun.
- Delay in surgical treatment often leads to amputations or death.
- In minor cases, injections of certain substances such as chicken vaccine, air, or water may be managed nonsurgically, but other substances can also be treated without surgery depending on the severity.
More in Injuries 1-24
Spotted an error? Know more?
Reader corrections go straight into our review queue. Suggest an edit · How this site is sourced