Author: Jerry Jones

Reciprocal Changes in Acute Myocardial Ischemia: From Myth to Mastery

Reciprocal Changes in Acute Myocardial Ischemia: From Myth to Mastery Jerry W. Jones, MD FACEP FAAEM   Abstract Reciprocal ST-segment change — defined as ST-segment depression occurring in any electrocardiographic lead whose axis forms an angle greater than 90° with the injury current vector — are among the most clinically important phenomena in acute coronary […]

Jones’s Rule: Rethinking ST‑Segment Depression as Reciprocal Change in Acute Coronary Syndromes

For decades, clinicians have been taught to interpret ST‑segment depression as a marker of subendocardial ischemia. While that framework is sometimes correct, it is also responsible for one of the most persistent diagnostic blind spots in acute coronary syndromes: the failure to recognize reciprocal ST‑segment changes as evidence of an evolving transmural ischemia, or STEMI. […]

Reciprocal Changes in Acute Myocardial Ischemia: From Myth to Mastery

Reciprocal Changes in Acute Myocardial Ischemia: From Myth to Mastery Jerry W. Jones, MD FACEP FAAEM   Abstract Reciprocal ST-segment changes — defined as ST-segment depression occurring in any electrocardiographic lead whose axis forms an angle greater than 90° with the injury current vector — are among the most clinically important phenomena in acute coronary […]

Anterior Fascicular Blocks – What You Probably Don’t Know!

What ELSE Could It Be? Alternative Diagnoses for Exams

Bundle Branch Block With Primary and Secondary Repolarization Abnormalities

What is YOUR Diagnosis of This ECG – Discussion

Ectopic Beats and How to Approach Them

What Is the Cause of This AV Dissociation?

Let’s Talk About Reciprocity in the Limb Leads