Artifacts and Therapy: Practice Question

Under most conditions, when does the appearance of lividity, or livor mortis, peak?
  1. 8 - 12 hours
  2. 12 - 18 hours
  3. 0.5 - 2 hours
  4. 0 and 30 minutes
  5. 60 - 72 hours
Show Answer and Explanations

8 - 12 hours — Correct answer

Correct. Lividity peaks at 8 - 12 hours

12 - 18 hours

Incorrect. Lividity becomes fixed between 12 and 18 hours.

0.5 - 2 hours

Incorrect. Lividity starts between 0.5 and 2 hours.

0 and 30 minutes

Incorrect. Lividity usually does not start within 30 minutes. Low perfusion states such as cardiogenic shock can cause lividity to start earlier, even before death.

60 - 72 hours

Incorrect. Generalized bloating occurs around 60 - 72 hours.

Summary

Summary: Lividity starts around 30 minutes - 2 hours, peaks around 8 - 12 hours, and becomes fixed between 12 and 18 hours.
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