wavy fibers
Characteristic microscopic appearance of myofibers at the border of acute myocardial infarcts, appearing undulated due to passive stretching.
Full Definition
Wavy fibers are a distinctive histological finding seen in acute myocardial infarction, appearing as undulated or serpentine myofibers at the periphery of the infarct zone. This morphology results from passive stretching of non-contracting dead myofibers by the surrounding viable, contracting myocardium. Wavy fibers are among the earliest microscopic changes visible in acute myocardial infarction, often appearing within hours of the ischemic event. They represent an important diagnostic feature when evaluating suspected cardiac ischemia.
Usage
Usage note: Should be distinguished from processing artifacts that can also create undulated appearances.
In Context
- "Microscopic examination revealed wavy fibers at the infarct border zone." — Pathology report
- "The presence of wavy fibers supported the diagnosis of acute myocardial infarction." — Forensic autopsy report