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Course Outline

Western Diamondback Rattlesnake

Signs and Symptoms of a Bite

Immediate pain or a burning sensation occurs at the site of the bite; fang marks are usually visible. Victims may experience a metallic or rubbery taste in the mouth. Significant swelling usually occurs within minutes, and symptoms may progress to weakness, sweating and/or chills, nausea and vomiting.

A small percentage of rattlesnake bites are “dry,” meaning that the snake has not injected venom. But do not count on being one of the lucky ones; seek help immediately — only a doctor can determine if you have a “dry” bite. The venom injected contains several enzymes designed to attack the tissue at the bite site that can cause severe tissue damage. The venom also contains components that cause blood thinning and other effects on the body. The Mohave rattlesnake venom may also contain a neurotoxin that results in severe muscle weakness.

Treatment

  • Seek medical attention from a hospital emergency room immediately! You will be evaluated and administered antivenin if necessary. It is important to get treatment as soon as possible. Even if you are a great distance from your vehicle or other help, move slowly if necessary to get help. You have time to reach medical care. Don’t panic: Stay as calm as possible. If bitten on the hand, remove all jewelry immediately before swelling begins.
  • Don’t apply ice to the bite site or immerse the bite in a bucket of ice.
  • Don’t use constricting band/cloth or tourniquets. Do not restrict blood flow in any manner.
  • Don’t cut the bite site or try to suck out the venom. Leave the bite site alone!
  • Don’t use electric shock or stun guns of any kind.
  • Don’t try to capture the snake to bring to the hospital. Time spent capturing the snake delays arrival at the emergency department and may result in additional bites. Physicians treat the symptoms as they occur and modify the antivenin/treatment as needed. Treatment is not snake specific.
Sign stating "Be alert. Watch for rattlesnakes."
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