Cardiovascular system mnemonic

Phases of the cardiac cycle

The mnemonic

I-E-I-R-F-A

What each word stands for

  • IIsovolumetric contraction
  • EEjection
  • I (second)Isovolumetric relaxation
  • RRapid ventricular filling
  • FReduced filling (diastasis)
  • AAtrial contraction, the final top-up

Why it matters clinically

Needed for interpreting pressure-volume loops and heart sounds.

Where it stops being reliable

The order is the point; valve timings still need to be learned separately.

Teaching aid, still awaiting independent review. Confirm facts in a standard source.

More mnemonics

Common questions

What is the Cardiovascular system mnemonic?

I-E-I-R-F-A. It helps you recall: Phases of the cardiac cycle.

What does "I" stand for?

Isovolumetric contraction

What does "E" stand for?

Ejection

What does "I (second)" stand for?

Isovolumetric relaxation

What are all the parts of the I-E-I-R-F-A mnemonic?

I: Isovolumetric contraction; E: Ejection; I (second): Isovolumetric relaxation; R: Rapid ventricular filling; F: Reduced filling (diastasis); A: Atrial contraction, the final top-up.

Which topic does this mnemonic belong to?

It belongs to Cardiovascular system in Physiology.

Where does this mnemonic stop being reliable?

The order is the point; valve timings still need to be learned separately.

How is this useful clinically?

Needed for interpreting pressure-volume loops and heart sounds.

How do I make this mnemonic stick?

Say it aloud, write it from memory tomorrow, then again in a week. Then test yourself on a Physiology question about Cardiovascular system.

Is this a standard mnemonic?

It is a teaching aid written or adapted by our team. Some resemble ones students share informally. Check any fact that matters in a standard source.