Related Experiment Video
Updated: Jun 18, 2026

04:41
Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
Published on: June 6, 2025
"Rigor mortis" in a live patient.
1Department of Anesthesiology, Critical Care and Pain Relief, Wockhardt Heart Institute, Bangalore, Karnataka 560076, USA. mailchakravarthy@gmail.com
The American Journal of Forensic Medicine and Pathology
|November 26, 2009
Summary
Rigor mortis, typically a postmortem sign, was observed in a live patient after cardiac surgery. This premortem muscle stiffening may complicate death determination and requires careful clinical evaluation.
Area of Science:
- Medical Science
- Physiology
- Pathology
Background:
- Rigor mortis is a well-established postmortem indicator of death, signifying muscle stiffening occurring hours after cessation of life.
- Conventional understanding dictates that rigor mortis is exclusively a phenomenon observed after death.
Observation:
- A rare case of "Rigor Mortis" was documented in a live patient following cardiac surgery.
- This premortem muscle stiffening occurred despite the patient being alive.
Findings:
- Intense low cardiac output, high doses of inotropic and vasopressor agents, and potential sepsis were identified as likely predisposing factors.
- These physiological stressors may induce muscle stiffening before death.
Implications:
- The occurrence of premortem muscle stiffening challenges the definitive use of rigor mortis in determining time of death.
- Healthcare professionals must exercise caution and conduct thorough examinations to differentiate premortem stiffening from true rigor mortis, avoiding premature declaration of death.

