Poor R Wave Progression

Poor R wave progression (PRWP) is often a sign of prior MI, though there are numerous possible etiologies. Normally, the R wave should progressively become more positive/taller throughout the chest leads from V1-V6. In anterior MI, this poor progression is similar to Q wave formation. The actual definition is by R wave being 3mm or less in V3. It is important to ensure that the leads were placed appropriately on the patient, however.

Examples:

Further Reading:

https://litfl.com/poor-r-wave-progression-prwp-ecg-library/

https://hqmeded-ecg.blogspot.com/search?q=poor+r+wave+progression