What is rigor in pathology?

Rigor in pathology refers to the strict adherence to established protocols, guidelines, and standards in the practice of pathology. It involves thorough and meticulous examination of specimens, accurate interpretation of results, and precise documentation of findings. Rigor in pathology is essential to ensure the accuracy and reliability of diagnostic tests and to provide high-quality patient care.

Rigor mortis is a temporary condition that occurs after death, when the muscles stiffen and become rigid. This process usually begins within a few hours after death and peaks within 24 hours. Rigor mortis is caused by the breakdown of adenosine triphosphate (ATP), which is the energy source for muscle contraction. As ATP levels decrease, the muscles become unable to relax and remain in a contracted state.

Rigor mortis affects all muscles in the body, but it is most noticeable in the larger muscles, such as the muscles of the limbs, trunk, and neck. The stiffness of rigor mortis can make it difficult to move the body or perform tasks that require muscle movement.

Rigor mortis usually lasts for several days, but it can vary depending on the temperature and humidity of the environment. In warm, humid conditions, rigor mortis may only last for a few hours, while in cold, dry conditions it may last for several days or even weeks.