Obstetric emergencies mnemonic

Causes of postpartum haemorrhage

The mnemonic

The 4 Ts

What each word stands for

  • ToneUterine atony, the commonest cause
  • TraumaGenital tract tears, uterine rupture or inversion
  • TissueRetained placenta or products
  • ThrombinCoagulopathy

Why it matters clinically

Gives a systematic search for the cause while resuscitating and calling for help.

Where it stops being reliable

It is a list of causes, not a treatment plan. Management starts with resuscitation and uterine massage at the same time.

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

More mnemonics

Common questions

What is the Obstetric emergencies mnemonic?

The 4 Ts. It helps you recall: Causes of postpartum haemorrhage.

What does "Tone" stand for?

Uterine atony, the commonest cause

What does "Trauma" stand for?

Genital tract tears, uterine rupture or inversion

What does "Tissue" stand for?

Retained placenta or products

What are all the parts of the The 4 Ts mnemonic?

Tone: Uterine atony, the commonest cause; Trauma: Genital tract tears, uterine rupture or inversion; Tissue: Retained placenta or products; Thrombin: Coagulopathy.

Which topic does this mnemonic belong to?

It belongs to Obstetric emergencies in OBG.

Where does this mnemonic stop being reliable?

It is a list of causes, not a treatment plan. Management starts with resuscitation and uterine massage at the same time.

How is this useful clinically?

Gives a systematic search for the cause while resuscitating and calling for help.

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 OBG question about Obstetric emergencies.

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.